more data

.gitea/workflows/build.yaml

@@ -1,30 +0,0 @@
-name: Build and Publish
-run-name: ${{ gitea.actor }} is building 🚀
-on: [push]
-
-jobs:
-  BuildAndDeployAmd64:
-    runs-on: amd64
-    steps:
-      - name: Check out repository code
-        uses: actions/checkout@v4
-      - name: Build docker image
-        run: docker build --progress=plain -t registry.knatofs.se/go-cart-actor-amd64:latest .
-      - name: Push to registry
-        run: docker push registry.knatofs.se/go-cart-actor-amd64:latest
-      - name: Deploy to Kubernetes
-        run: kubectl apply -f deployment/deployment.yaml -n cart
-      - name: Rollout amd64 deployment
-        run: kubectl rollout restart deployment/cart-actor-x86 -n cart
-  
-  BuildAndDeploy:
-    runs-on: arm64
-    steps:
-      - name: Check out repository code
-        uses: actions/checkout@v4
-      - name: Build docker image
-        run: docker build --progress=plain -t registry.knatofs.se/go-cart-actor .
-      - name: Push to registry
-        run: docker push registry.knatofs.se/go-cart-actor
-      - name: Rollout arm64 deployment
-        run: kubectl rollout restart deployment/cart-actor-arm64 -n cart

.gitignore

@@ -1,4 +1 @@
-__debug*
-go-cart-actor
-data/*.prot
-data/*.go*
+__debug*

Dockerfile

@@ -1,17 +0,0 @@
-# syntax=docker/dockerfile:1
-
-FROM golang:alpine AS build-stage
-WORKDIR /app
-COPY go.mod go.sum ./
-RUN go mod download
-
-COPY proto ./proto
-COPY *.go ./
-
-RUN CGO_ENABLED=0 GOOS=linux go build -o /go-cart-actor
-
-FROM gcr.io/distroless/base-debian11
-WORKDIR /
-
-COPY --from=build-stage /go-cart-actor /go-cart-actor
-ENTRYPOINT ["/go-cart-actor"]

GRPC-MIGRATION-PLAN.md

@@ -1,396 +0,0 @@
-# gRPC Migration Plan
-
-File: GRPC-MIGRATION-PLAN.md  
-Author: (Generated plan)  
-Status: Draft for review  
-Target Release: Next major version (breaking change – no mixed compatibility)
-
----
-
-## 1. Overview
-
-This document describes the full migration of the current custom TCP frame-based protocol (both the cart mutation/state channel on port `1337` and the control plane on port `1338`) to gRPC. We will remove all legacy packet framing (`FrameWithPayload`, `RemoteGrain`, `GenericListener` handlers for these two ports) and replace them with two gRPC services:
-
-1. Cart Actor Service (mutations + state retrieval)
-2. Control Plane Service (cluster membership, negotiation, ownership change, lifecycle)
-
-We intentionally keep:
-- Internal `CartGrain` logic, message storage format, disk persistence, and JSON cart serialization.
-- Existing message type numeric mapping for backward compatibility with persisted event logs.
-- HTTP/REST API layer unchanged (it still consumes JSON state from the local/remote grain pipeline).
-
-We do NOT implement mixed-version compatibility; migration occurs atomically (cluster restart with new image).
-
----
-
-## 2. Goals
-
-- Remove custom binary frame protocol & simplify maintenance.
-- Provide clearer, strongly defined interfaces via `.proto` schemas.
-- Improve observability via gRPC interceptors (metrics & tracing hooks).
-- Reduce per-call overhead compared with the current manual connection pooling + handwritten framing (HTTP/2 multiplexing + connection reuse).
-- Prepare groundwork for future enhancements (streaming, typed state, event streaming) without rewriting again.
-
----
-
-## 3. Non-Goals (Phase 1)
-
-- Converting the cart state payload from JSON to a strongly typed proto.
-- Introducing authentication / mTLS (may be added later).
-- Changing persistence or replay format.
-- Changing the HTTP API contract.
-- Implementing streaming watchers or push updates.
-
----
-
-## 4. Architecture After Migration
-
-Ports:  
-- `:1337` → gRPC CartActor service.  
-- `:1338` → gRPC ControlPlane service.
-
-Each node:
-- Runs one gRPC server with both services (can use a single listener bound to two services or keep two separate listeners; we will keep two ports initially to minimize operational surprise, but they could be merged later).
-- Maintains a connection pool of `*grpc.ClientConn` objects keyed by remote hostname (one per remote host, reused for both services).
-
-Call Flow (Mutation):
-1. HTTP request hits `PoolServer`.
-2. `SyncedPool.getGrain(cartId)`:
-   - Local: direct invocation.
-   - Remote: uses `RemoteGrainGRPC` (new) which invokes `CartActor.Mutate`.
-3. Response JSON returned unchanged.
-
-Control Plane Flow:
-- Discovery (K8s watch) still triggers `AddRemote(host)`.
-- Instead of custom `Ping`, `Negotiate`, etc. via frames, call gRPC methods on `ControlPlane` service.
-- Ownership changes use `ConfirmOwner` RPC.
-
----
-
-## 5. Proto Design
-
-### 5.1 Cart Actor Proto (Envelope Pattern)
-
-We keep an envelope with `bytes payload` holding the serialized underlying cart mutation proto (existing types in `messages.proto`). This minimizes churn.
-
-Indented code block (proto sketch):
-
-    syntax = "proto3";
-    package cart;
-    option go_package = "git.tornberg.me/go-cart-actor/proto;proto";
-
-    enum MutationType {
-      MUTATION_TYPE_UNSPECIFIED = 0;
-      MUTATION_ADD_REQUEST = 1;
-      MUTATION_ADD_ITEM = 2;
-      MUTATION_REMOVE_ITEM = 4;
-      MUTATION_REMOVE_DELIVERY = 5;
-      MUTATION_CHANGE_QUANTITY = 6;
-      MUTATION_SET_DELIVERY = 7;
-      MUTATION_SET_PICKUP_POINT = 8;
-      MUTATION_CREATE_CHECKOUT_ORDER = 9;
-      MUTATION_SET_CART_ITEMS = 10;
-      MUTATION_ORDER_COMPLETED = 11;
-    }
-
-    message MutationRequest {
-      string cart_id = 1;
-      MutationType type = 2;
-      bytes payload = 3;          // Serialized specific mutation proto
-      int64 client_timestamp = 4; // Optional; server fills if zero
-    }
-
-    message MutationReply {
-      int32 status_code = 1;
-      bytes payload = 2; // JSON cart state or error string
-    }
-
-    message StateRequest {
-      string cart_id = 1;
-    }
-
-    message StateReply {
-      int32 status_code = 1;
-      bytes payload = 2; // JSON cart state
-    }
-
-    service CartActor {
-      rpc Mutate(MutationRequest) returns (MutationReply);
-      rpc GetState(StateRequest) returns (StateReply);
-    }
-
-### 5.2 Control Plane Proto
-
-    syntax = "proto3";
-    package control;
-    option go_package = "git.tornberg.me/go-cart-actor/proto;proto";
-
-    message Empty {}
-
-    message PingReply {
-      string host = 1;
-      int64 unix_time = 2;
-    }
-
-    message NegotiateRequest {
-      repeated string known_hosts = 1;
-    }
-    message NegotiateReply {
-      repeated string hosts = 1; // Healthy hosts returned
-    }
-
-    message CartIdsReply {
-      repeated string cart_ids = 1;
-    }
-
-    message OwnerChangeRequest {
-      string cart_id = 1;
-      string new_host = 2;
-    }
-    message OwnerChangeAck {
-      bool accepted = 1;
-      string message = 2;
-    }
-
-    message ClosingNotice {
-      string host = 1;
-    }
-
-    service ControlPlane {
-      rpc Ping(Empty) returns (PingReply);
-      rpc Negotiate(NegotiateRequest) returns (NegotiateReply);
-      rpc GetCartIds(Empty) returns (CartIdsReply);
-      rpc ConfirmOwner(OwnerChangeRequest) returns (OwnerChangeAck);
-      rpc Closing(ClosingNotice) returns (OwnerChangeAck);
-    }
-
----
-
-## 6. Message Type Mapping
-
-| Legacy Constant | Numeric | New Enum Value              |
-|-----------------|---------|-----------------------------|
-| AddRequestType  | 1       | MUTATION_ADD_REQUEST        |
-| AddItemType     | 2       | MUTATION_ADD_ITEM           |
-| RemoveItemType  | 4       | MUTATION_REMOVE_ITEM        |
-| RemoveDeliveryType | 5    | MUTATION_REMOVE_DELIVERY    |
-| ChangeQuantityType | 6    | MUTATION_CHANGE_QUANTITY    |
-| SetDeliveryType | 7       | MUTATION_SET_DELIVERY       |
-| SetPickupPointType | 8    | MUTATION_SET_PICKUP_POINT   |
-| CreateCheckoutOrderType | 9 | MUTATION_CREATE_CHECKOUT_ORDER |
-| SetCartItemsType | 10     | MUTATION_SET_CART_ITEMS     |
-| OrderCompletedType | 11   | MUTATION_ORDER_COMPLETED    |
-
-Persisted events keep original numeric codes; reconstruction simply casts to `MutationType`.
-
----
-
-## 7. Components To Remove / Replace
-
-Remove (after migration complete):
-- `remote-grain.go`
-- `rpc-server.go`
-- Any packet/frame-specific types solely used by the above (search: `FrameWithPayload`, `RemoteHandleMutation`, `RemoteGetState` where not reused by disk or internal logic).
-- The constants representing network frame types in `synced-pool.go` (RemoteNegotiate, AckChange, etc.) replaced by gRPC calls.
-- netpool usage for remote cart channel (control plane also no longer needs `Connection` abstraction).
-
-Retain (until reworked or optionally cleaned later):
-- `message.go` (for persistence)
-- `message-handler.go`
-- `cart-grain.go`
-- `messages.proto` (underlying mutation messages)
-- HTTP API server and REST handlers.
-
----
-
-## 8. New / Modified Components
-
-New files (planned):
-- `proto/cart_actor.proto`
-- `proto/control_plane.proto`
-- `grpc/cart_actor_server.go` (server impl)
-- `grpc/cart_actor_client.go` (client adapter implementing `Grain`)
-- `grpc/control_plane_server.go`
-- `grpc/control_plane_client.go`
-- `grpc/interceptors.go` (metrics, logging, optional tracing hooks)
-- `remote_grain_grpc.go` (adapter bridging existing interfaces)
-- `control_plane_adapter.go` (replaces frame handlers in `SyncedPool`)
-
-Modified:
-- `synced-pool.go` (remote host management now uses gRPC clients; negotiation logic updated)
-- `main.go` (initialize both gRPC services on startup)
-- `go.mod` (add `google.golang.org/grpc`)
-
----
-
-## 9. Step-by-Step Migration Plan
-
-1. Add proto files and generate Go code (`protoc --go_out --go-grpc_out`).
-2. Implement `CartActorServer`:
-   - Translate `MutationRequest` to `Message`.
-   - Use existing handler registry for payload encode/decode.
-   - Return JSON cart state.
-3. Implement `CartActorClient` wrapper (`RemoteGrainGRPC`) implementing:
-   - `HandleMessage`: Build envelope, call `Mutate`.
-   - `GetCurrentState`: Call `GetState`.
-4. Implement `ControlPlaneServer` with methods:
-   - `Ping`: returns host + time.
-   - `Negotiate`: merge host lists; emulate old logic.
-   - `GetCartIds`: iterate local grains.
-   - `ConfirmOwner`: replicate quorum flow (accept always; error path for future).
-   - `Closing`: schedule remote removal.
-5. Implement `ControlPlaneClient` used inside `SyncedPool.AddRemote`.
-6. Refactor `SyncedPool`:
-   - Replace frame handlers registration with gRPC client calls.
-   - Replace `Server.AddHandler(...)` start-up with launching gRPC server.
-   - Implement periodic health checks using `Ping`.
-7. Remove old connection constructs for 1337/1338.
-8. Metrics:
-   - Add unary interceptor capturing duration and status.
-   - Replace packet counters with `cart_grpc_mutate_calls_total`, `cart_grpc_control_calls_total`, histograms for latency.
-9. Update `main.go` to start:
-   - gRPC server(s).
-   - HTTP server as before.
-10. Delete legacy files & update README build instructions.
-11. Load testing & profiling on Raspberry Pi hardware (or ARM emulation).
-12. Final cleanup & dead code removal (search for now-unused constants & structs).
-13. Tag release.
-
----
-
-## 10. Performance Considerations (Raspberry Pi Focus)
-
-- Single `*grpc.ClientConn` per remote host (HTTP/2 multiplexing) to reduce file descriptor and handshake overhead.
-- Use small keepalive pings (optional) only if connections drop; default may suffice.
-- Avoid reflection / dynamic dispatch in hot path: pre-build a mapping from `MutationType` to handler function.
-- Reuse byte buffers:
-  - Implement a `sync.Pool` for mutation serialization to reduce GC pressure.
-- Enforce per-RPC deadlines (e.g. 300–400ms) to avoid pile-ups.
-- Backpressure:
-  - Before dispatch: if local grain pool at capacity and target grain is remote, abort early with 503 to caller (optional).
-- Disable gRPC compression for small payloads (mutation messages are small). Condition compression if payload > threshold (e.g. 8KB).
-- Compile with `-ldflags="-s -w"` in production to reduce binary size (optional).
-- Enable `GOMAXPROCS` tuned to CPU cores; Pi often benefits from leaving default but monitor.
-- Use histograms with limited buckets to reduce Prometheus cardinality.
-
----
-
-## 11. Testing Strategy
-
-Unit:
-- Message type mapping tests (legacy -> enum).
-- Envelope roundtrip: Original proto -> payload -> gRPC -> server decode -> internal Message.
-
-Integration:
-- Two-node cluster simulation:
-  - Mutate cart on Node A, ownership moves, verify remote access from Node B.
-  - Quorum failure simulation (temporarily reject `ConfirmOwner`).
-- Control plane negotiation: start nodes in staggered order, assert final membership.
-
-Load/Perf:
-- Benchmark local mutation vs remote mutation latency.
-- High concurrency test (N goroutines each performing X mutations).
-- Memory profiling (ensure no large buffer retention).
-
-Failure Injection:
-- Kill a node mid-mutation; client call should timeout and not corrupt local state.
-- Simulated network partition: drop `Ping` replies; ensure host removal path triggers.
-
----
-
-## 12. Rollback Strategy
-
-Because no mixed-version compatibility is provided, rollback = redeploy previous version containing legacy protocol:
-1. Stop all new-version pods.
-2. Deploy old version cluster-wide.
-3. No data migration needed (event persistence unaffected).
-
-Note: Avoid partial upgrades; perform full rolling restart quickly to prevent split-brain (new nodes won’t talk to old nodes).
-
----
-
-## 13. Risks & Mitigations
-
-| Risk | Description | Mitigation |
-|------|-------------|------------|
-| Full-cluster restart required | No mixed compatibility | Schedule maintenance window |
-| gRPC adds CPU overhead | Envelope + marshaling cost | Buffer reuse, keep small messages uncompressed |
-| Ownership race | Timing differences after refactor | Add explicit logs + tests around `RequestOwnership` path |
-| Hidden dependency on frame-level status codes | Some code may assume `FrameWithPayload` fields | Wrap gRPC responses into minimal compatibility structs until fully removed |
-| Memory growth | Connection reuse & pooled buffers not implemented initially | Add `sync.Pool` & track memory via pprof early |
-
----
-
-## 14. Logging & Observability
-
-- Structured log entries for:
-  - Ownership changes
-  - Negotiation rounds
-  - Remote spawn events
-  - Mutation failures (with cart id, mutation type)
-- Metrics:
-  - `cart_grpc_mutate_duration_seconds` (histogram)
-  - `cart_grpc_mutate_errors_total`
-  - `cart_grpc_control_duration_seconds`
-  - `cart_remote_hosts` (gauge)
-  - Retain existing grain counts.
-- Optional future: OpenTelemetry tracing (span per remote mutation).
-
----
-
-## 15. Future Enhancements (Post-Migration)
-
-- Replace JSON state with `CartState` proto and provide streaming watch API.
-- mTLS between nodes (certificate rotation via K8s Secret or SPIRE).
-- Distributed tracing integration.
-- Ownership leasing with TTL and optimistic renewal.
-- Delta replication or CRDT-based conflict resolution for experimentation.
-
----
-
-## 16. Task Breakdown & Estimates
-
-| Task | Estimate |
-|------|----------|
-| Proto definitions & generation | 0.5d |
-| CartActor server/client | 1.0d |
-| ControlPlane server/client | 1.0d |
-| SyncedPool refactor | 1.0d |
-| Metrics & interceptors | 0.5d |
-| Remove legacy code & cleanup | 0.5d |
-| Tests (unit + integration) | 1.5d |
-| Benchmark & tuning | 0.5–1.0d |
-| Total | ~6–7d |
-
----
-
-## 17. Open Questions (Confirm Before Implementation)
-
-1. Combine both services on a single port (simplify ops) or keep dual-port first? (Default here: keep dual, but easy to merge.)
-2. Minimum Go version remains 1.24.x—acceptable to add `google.golang.org/grpc` latest?
-3. Accept adding `sync.Pool` micro-optimizations in first pass or postpone?
-
----
-
-## 18. Acceptance Criteria
-
-- All previous integration tests (adjusted to gRPC) pass.
-- Cart operations (add, remove, delivery, checkout) function across at least a 2‑node cluster.
-- Control plane negotiation forms consistent host list.
-- Latency for a remote mutation does not degrade beyond an acceptable threshold (define baseline before merge).
-- Legacy networking code fully removed.
-
----
-
-## 19. Next Steps (If Approved)
-
-1. Implement proto files and commit.
-2. Scaffold server & client code.
-3. Refactor `SyncedPool` and `main.go`.
-4. Add metrics and tests.
-5. Run benchmark on target Pi hardware.
-6. Review & merge.
-
----
-
-End of Plan.

README.md

@@ -1,178 +0,0 @@
-# Go Cart Actor
-
-A distributed cart management system using the actor model pattern.
-
-## Prerequisites
-
-- Go 1.24.2+
-- Protocol Buffers compiler (`protoc`)
-- protoc-gen-go and protoc-gen-go-grpc plugins
-
-### Installing Protocol Buffers
-
-On Windows:
-```powershell
-winget install protobuf
-```
-
-On macOS:
-```bash
-brew install protobuf
-```
-
-On Linux:
-```bash
-# Ubuntu/Debian
-sudo apt install protobuf-compiler
-
-# Or download from: https://github.com/protocolbuffers/protobuf/releases
-```
-
-### Installing Go protobuf plugin
-
-```bash
-go install google.golang.org/protobuf/cmd/protoc-gen-go@latest
-go install google.golang.org/grpc/cmd/protoc-gen-go-grpc@latest
-```
-
-## Working with Protocol Buffers
-
-### Generating Go code from proto files
-
-After modifying any proto (`proto/messages.proto`, `proto/cart_actor.proto`, `proto/control_plane.proto`), regenerate the Go code (all three share the unified `messages` package):
-
-```bash
-cd proto
-protoc --go_out=. --go_opt=paths=source_relative \
-       --go-grpc_out=. --go-grpc_opt=paths=source_relative \
-       messages.proto cart_actor.proto control_plane.proto
-```
-
-### Protocol Buffer Messages
-
-The `proto/messages.proto` file defines the following message types:
-
-- `AddRequest` - Add items to cart (includes quantity, sku, country, optional storeId)
-- `SetCartRequest` - Set entire cart contents
-- `AddItem` - Complete item information for cart
-- `RemoveItem` - Remove item from cart
-- `ChangeQuantity` - Update item quantity
-- `SetDelivery` - Configure delivery options
-- `SetPickupPoint` - Set pickup location
-- `PickupPoint` - Pickup point details
-- `RemoveDelivery` - Remove delivery option
-- `CreateCheckoutOrder` - Initiate checkout
-- `OrderCreated` - Order creation response
-
-### Building the project
-
-```bash
-go build .
-```
-
-### Running tests
-
-```bash
-go test ./...
-```
-
-## HTTP API Quick Start (curl Examples)
-
-Assuming the service is reachable at http://localhost:8080 and the cart API is mounted at /cart.
-Most endpoints use an HTTP cookie named `cartid` to track the cart. The first request will set it.
-
-### 1. Get (or create) a cart
-```bash
-curl -i http://localhost:8080/cart/
-```
-Response sets a `cartid` cookie and returns the current (possibly empty) cart JSON.
-
-### 2. Add an item by SKU (implicit quantity = 1)
-```bash
-curl -i --cookie-jar cookies.txt http://localhost:8080/cart/add/TEST-SKU-123
-```
-Stores cookie in `cookies.txt` for subsequent calls.
-
-### 3. Add an item with explicit payload (country, quantity)
-```bash
-curl -i --cookie cookies.txt \
-  -H "Content-Type: application/json" \
-  -d '{"sku":"TEST-SKU-456","quantity":2,"country":"se"}' \
-  http://localhost:8080/cart/
-```
-
-### 4. Change quantity of an existing line
-(First list the cart to find `id` of the line; here we use id=1 as an example)
-```bash
-curl -i --cookie cookies.txt \
-  -X PUT -H "Content-Type: application/json" \
-  -d '{"id":1,"quantity":3}' \
-  http://localhost:8080/cart/
-```
-
-### 5. Remove an item
-```bash
-curl -i --cookie cookies.txt -X DELETE http://localhost:8080/cart/1
-```
-
-### 6. Set entire cart contents (overwrites items)
-```bash
-curl -i --cookie cookies.txt \
-  -X POST -H "Content-Type: application/json" \
-  -d '{"items":[{"sku":"TEST-SKU-AAA","quantity":1,"country":"se"},{"sku":"TEST-SKU-BBB","quantity":2,"country":"se"}]}' \
-  http://localhost:8080/cart/set
-```
-
-### 7. Add a delivery (provider + optional items)
-If `items` is empty or omitted, all items without a delivery get this one.
-```bash
-curl -i --cookie cookies.txt \
-  -X POST -H "Content-Type: application/json" \
-  -d '{"provider":"standard","items":[1,2]}' \
-  http://localhost:8080/cart/delivery
-```
-
-### 8. Remove a delivery by deliveryId
-```bash
-curl -i --cookie cookies.txt -X DELETE http://localhost:8080/cart/delivery/1
-```
-
-### 9. Set a pickup point for a delivery
-```bash
-curl -i --cookie cookies.txt \
-  -X PUT -H "Content-Type: application/json" \
-  -d '{"id":"PUP123","name":"Locker 5","address":"Main St 1","city":"Stockholm","zip":"11122","country":"SE"}' \
-  http://localhost:8080/cart/delivery/1/pickupPoint
-```
-
-### 10. Checkout (returns HTML snippet from Klarna)
-```bash
-curl -i --cookie cookies.txt http://localhost:8080/cart/checkout
-```
-
-### 11. Using a known cart id directly (bypassing cookie)
-If you already have a cart id (e.g. 1720000000000000):
-```bash
-CART_ID=1720000000000000
-curl -i http://localhost:8080/cart/byid/$CART_ID
-curl -i -X POST -H "Content-Type: application/json" \
-  -d '{"sku":"TEST-SKU-XYZ","quantity":1,"country":"se"}' \
-  http://localhost:8080/cart/byid/$CART_ID
-```
-
-### 12. Clear cart cookie (forces a new cart on next request)
-```bash
-curl -i --cookie cookies.txt -X DELETE http://localhost:8080/cart/
-```
-
-Tip: Use `--cookie-jar` and `--cookie` to persist the session across multiple commands:
-```bash
-curl --cookie-jar cookies.txt http://localhost:8080/cart/
-curl --cookie cookies.txt http://localhost:8080/cart/add/TEST-SKU-123
-```
-
-## Important Notes
-
-- Always regenerate protobuf Go code after modifying any `.proto` files (messages/cart_actor/control_plane)
-- The generated `messages.pb.go` file should not be edited manually
-- Make sure your PATH includes the protoc-gen-go binary location (usually `$GOPATH/bin`)

amqp-order-handler.go

@@ -1,83 +0,0 @@
-package main
-
-import (
-	"log"
-
-	amqp "github.com/rabbitmq/amqp091-go"
-)
-
-type AmqpOrderHandler struct {
-	Url        string
-	connection *amqp.Connection
-	//channel    *amqp.Channel
-}
-
-const (
-	topic = "order-placed"
-)
-
-func (t *AmqpOrderHandler) Connect() error {
-
-	conn, err := amqp.DialConfig(t.Url, amqp.Config{
-		//Vhost:      "/",
-		Properties: amqp.NewConnectionProperties(),
-	})
-
-	if err != nil {
-		return err
-	}
-	t.connection = conn
-	ch, err := conn.Channel()
-	if err != nil {
-		return err
-	}
-	defer ch.Close()
-	if err := ch.ExchangeDeclare(
-		topic,   // name
-		"topic", // type
-		true,    // durable
-		false,   // auto-delete
-		false,   // internal
-		false,   // noWait
-		nil,     // arguments
-	); err != nil {
-		return err
-	}
-
-	if _, err = ch.QueueDeclare(
-		topic, // name of the queue
-		true,  // durable
-		false, // delete when unused
-		false, // exclusive
-		false, // noWait
-		nil,   // arguments
-	); err != nil {
-		return err
-	}
-
-	return nil
-}
-
-func (t *AmqpOrderHandler) Close() error {
-	log.Println("Closing master channel")
-	return t.connection.Close()
-	//return t.channel.Close()
-}
-
-func (t *AmqpOrderHandler) OrderCompleted(data []byte) error {
-	ch, err := t.connection.Channel()
-	if err != nil {
-		return err
-	}
-	defer ch.Close()
-	return ch.Publish(
-		topic,
-		topic,
-		true,
-		false,
-		amqp.Publishing{
-			ContentType: "application/json",
-			Body:        data,
-		},
-	)
-}

api-tests/cart.http

@@ -1,42 +0,0 @@
-
-### Add item to cart
-POST https://cart.tornberg.me/api/12345
-Content-Type: application/json
-
-{
-	"sku": "763281",
-	"quantity": 1
-}
-
-### Update quanity of item in cart
-PUT https://cart.tornberg.me/api/12345
-Content-Type: application/json
-
-{
-	"id": 1,
-	"quantity": 1
-}
-
-### Delete item from cart
-DELETE https://cart.tornberg.me/api/1002/1
-
-
-### Set delivery
-
-POST https://cart.tornberg.me/api/1002/delivery
-Content-Type: application/json
-
-{
-	"provider": "postnord",
-	"items": []
-}
-
-
-### Get cart
-GET https://cart.tornberg.me/api/12345
-
-
-### Remove delivery method
-DELETE https://cart.tornberg.me/api/12345/delivery/2
-
-

cart-grain.go

@@ -1,35 +1,18 @@
 package main
 
 import (
-	"bytes"
 	"encoding/json"
 	"fmt"
 	"log"
-	"slices"
-	"sync"
+	"net/http"
 	"time"
 
 	messages "git.tornberg.me/go-cart-actor/proto"
+	"github.com/matst80/slask-finder/pkg/index"
 )
 
 type CartId [16]byte
 
-// String returns the cart id as a trimmed UTF-8 string (trailing zero bytes removed).
-func (id CartId) String() string {
-	n := 0
-	for n < len(id) && id[n] != 0 {
-		n++
-	}
-	return string(id[:n])
-}
-
-// ToCartId converts an arbitrary string to a fixed-size CartId (truncating or padding with zeros).
-func ToCartId(s string) CartId {
-	var id CartId
-	copy(id[:], []byte(s))
-	return id
-}
-
 func (id CartId) MarshalJSON() ([]byte, error) {
 	return json.Marshal(id.String())
 }
@@ -44,72 +27,23 @@ func (id *CartId) UnmarshalJSON(data []byte) error {
 	return nil
 }
 
-type StockStatus int
-
-const (
-	OutOfStock StockStatus = 0
-	LowStock   StockStatus = 1
-	InStock    StockStatus = 2
-)
-
 type CartItem struct {
-	Id          int         `json:"id"`
-	ItemId      int         `json:"itemId,omitempty"`
-	ParentId    int         `json:"parentId,omitempty"`
-	Sku         string      `json:"sku"`
-	Name        string      `json:"name"`
-	Price       int64       `json:"price"`
-	TotalPrice  int64       `json:"totalPrice"`
-	TotalTax    int64       `json:"totalTax"`
-	OrgPrice    int64       `json:"orgPrice"`
-	Stock       StockStatus `json:"stock"`
-	Quantity    int         `json:"qty"`
-	Tax         int         `json:"tax"`
-	TaxRate     int         `json:"taxRate"`
-	Brand       string      `json:"brand,omitempty"`
-	Category    string      `json:"category,omitempty"`
-	Category2   string      `json:"category2,omitempty"`
-	Category3   string      `json:"category3,omitempty"`
-	Category4   string      `json:"category4,omitempty"`
-	Category5   string      `json:"category5,omitempty"`
-	Disclaimer  string      `json:"disclaimer,omitempty"`
-	SellerId    string      `json:"sellerId,omitempty"`
-	SellerName  string      `json:"sellerName,omitempty"`
-	ArticleType string      `json:"type,omitempty"`
-	Image       string      `json:"image,omitempty"`
-	Outlet      *string     `json:"outlet,omitempty"`
-	StoreId     *string     `json:"storeId,omitempty"`
-}
-
-type CartDelivery struct {
-	Id          int                   `json:"id"`
-	Provider    string                `json:"provider"`
-	Price       int64                 `json:"price"`
-	Items       []int                 `json:"items"`
-	PickupPoint *messages.PickupPoint `json:"pickupPoint,omitempty"`
+	Sku   string `json:"sku"`
+	Name  string `json:"name"`
+	Price int64  `json:"price"`
+	Image string `json:"image"`
 }
 
 type CartGrain struct {
-	mu                sync.RWMutex
-	lastItemId        int
-	lastDeliveryId    int
-	storageMessages   []Message
-	Id                CartId          `json:"id"`
-	Items             []*CartItem     `json:"items"`
-	TotalPrice        int64           `json:"totalPrice"`
-	TotalTax          int64           `json:"totalTax"`
-	TotalDiscount     int64           `json:"totalDiscount"`
-	Deliveries        []*CartDelivery `json:"deliveries,omitempty"`
-	Processing        bool            `json:"processing"`
-	PaymentInProgress bool            `json:"paymentInProgress"`
-	OrderReference    string          `json:"orderReference,omitempty"`
-	PaymentStatus     string          `json:"paymentStatus,omitempty"`
+	storageMessages []Message
+	Id              CartId     `json:"id"`
+	Items           []CartItem `json:"items"`
+	TotalPrice      int64      `json:"totalPrice"`
 }
 
 type Grain interface {
 	GetId() CartId
-	HandleMessage(message *Message, isReplay bool) (*FrameWithPayload, error)
-	GetCurrentState() (*FrameWithPayload, error)
+	HandleMessage(message *Message, isReplay bool) ([]byte, error)
 }
 
 func (c *CartGrain) GetId() CartId {
@@ -123,90 +57,47 @@ func (c *CartGrain) GetLastChange() int64 {
 	return *c.storageMessages[len(c.storageMessages)-1].TimeStamp
 }
 
-func (c *CartGrain) GetCurrentState() (*FrameWithPayload, error) {
-	result, err := json.Marshal(c)
-	if err != nil {
-		ret := MakeFrameWithPayload(0, 400, []byte(err.Error()))
-		return &ret, nil
-	}
-	ret := MakeFrameWithPayload(0, 200, result)
-	return &ret, nil
-}
-
-func getInt(data float64, ok bool) (int, error) {
-	if !ok {
-		return 0, fmt.Errorf("invalid type")
-	}
-	return int(data), nil
-}
-
-func getItemData(sku string, qty int, country string) (*messages.AddItem, error) {
-	item, err := FetchItem(sku, country)
+func getItemData(sku string) (*messages.AddItem, error) {
+	res, err := http.Get("https://slask-finder.tornberg.me/api/get/" + sku)
 	if err != nil {
 		return nil, err
 	}
-	orgPrice, _ := getInt(item.GetNumberFieldValue(5)) // getInt(item.Fields[5])
-
-	price, priceErr := getInt(item.GetNumberFieldValue(4)) //Fields[4]
-
-	if priceErr != nil {
-		return nil, fmt.Errorf("invalid price")
+	defer res.Body.Close()
+	var item index.DataItem
+	err = json.NewDecoder(res.Body).Decode(&item)
+	if err != nil {
+		return nil, err
 	}
+	price := item.GetPrice()
+	if price == 0 {
+		priceField, ok := item.GetFields()[4]
+		if ok {
 
-	stock := InStock
-	/*item.t
-	if item.StockLevel == "0" || item.StockLevel == "" {
-		stock = OutOfStock
-	} else if item.StockLevel == "5+" {
-		stock = LowStock
-		}*/
-	articleType, _ := item.GetStringFieldValue(1)   //.Fields[1].(string)
-	outletGrade, ok := item.GetStringFieldValue(20) //.Fields[20].(string)
-	var outlet *string
-	if ok {
-		outlet = &outletGrade
+			priceFloat, ok := priceField.(float64)
+			if !ok {
+				price, ok = priceField.(int)
+				if !ok {
+					return nil, fmt.Errorf("invalid price type")
+				}
+			} else {
+				price = int(priceFloat)
+			}
+		}
 	}
-	sellerId, _ := item.GetStringFieldValue(24)  // .Fields[24].(string)
-	sellerName, _ := item.GetStringFieldValue(9) // .Fields[9].(string)
-
-	brand, _ := item.GetStringFieldValue(2)      //.Fields[2].(string)
-	category, _ := item.GetStringFieldValue(10)  //.Fields[10].(string)
-	category2, _ := item.GetStringFieldValue(11) //.Fields[11].(string)
-	category3, _ := item.GetStringFieldValue(12) //.Fields[12].(string)
-	category4, _ := item.GetStringFieldValue(13) //Fields[13].(string)
-	category5, _ := item.GetStringFieldValue(14) //.Fields[14].(string)
-
 	return &messages.AddItem{
-		ItemId:      int64(item.Id),
-		Quantity:    int32(qty),
-		Price:       int64(price),
-		OrgPrice:    int64(orgPrice),
-		Sku:         sku,
-		Name:        item.Title,
-		Image:       item.Img,
-		Stock:       int32(stock),
-		Brand:       brand,
-		Category:    category,
-		Category2:   category2,
-		Category3:   category3,
-		Category4:   category4,
-		Category5:   category5,
-		Tax:         2500,
-		SellerId:    sellerId,
-		SellerName:  sellerName,
-		ArticleType: articleType,
-		Disclaimer:  item.Disclaimer,
-		Country:     country,
-		Outlet:      outlet,
+		Quantity: 1,
+		Price:    int64(price),
+		Sku:      sku,
+		Name:     item.Title,
+		Image:    item.Img,
 	}, nil
 }
 
-func (c *CartGrain) AddItem(sku string, qty int, country string, storeId *string) (*FrameWithPayload, error) {
-	cartItem, err := getItemData(sku, qty, country)
+func (c *CartGrain) AddItem(sku string) ([]byte, error) {
+	cartItem, err := getItemData(sku)
 	if err != nil {
 		return nil, err
 	}
-	cartItem.StoreId = storeId
 	return c.HandleMessage(&Message{
 		Type:    2,
 		Content: cartItem,
@@ -214,10 +105,8 @@ func (c *CartGrain) AddItem(sku string, qty int, country string, storeId *string
 }
 
 func (c *CartGrain) GetStorageMessage(since int64) []StorableMessage {
-	c.mu.RLock()
-	defer c.mu.RUnlock()
-	ret := make([]StorableMessage, 0)
 
+	ret := make([]StorableMessage, 0)
 	for _, message := range c.storageMessages {
 		if *message.TimeStamp > since {
 			ret = append(ret, message)
@@ -226,396 +115,42 @@ func (c *CartGrain) GetStorageMessage(since int64) []StorableMessage {
 	return ret
 }
 
-func (c *CartGrain) GetState() ([]byte, error) {
-	return json.Marshal(c)
-}
-
-func (c *CartGrain) ItemsWithDelivery() []int {
-	ret := make([]int, 0, len(c.Items))
-	for _, item := range c.Items {
-		for _, delivery := range c.Deliveries {
-			for _, id := range delivery.Items {
-				if item.Id == id {
-					ret = append(ret, id)
-				}
-			}
-		}
-	}
-	return ret
-}
-
-func (c *CartGrain) ItemsWithoutDelivery() []int {
-	ret := make([]int, 0, len(c.Items))
-	hasDelivery := c.ItemsWithDelivery()
-	for _, item := range c.Items {
-		found := false
-		for _, id := range hasDelivery {
-			if item.Id == id {
-				found = true
-				break
-			}
-		}
-
-		if !found {
-			ret = append(ret, item.Id)
-		}
-	}
-	return ret
-}
-
-func (c *CartGrain) FindItemWithSku(sku string) (*CartItem, bool) {
-	c.mu.RLock()
-	defer c.mu.RUnlock()
-	for _, item := range c.Items {
-		if item.Sku == sku {
-			return item, true
-		}
-	}
-	return nil, false
-}
-
-func GetTaxAmount(total int64, tax int) int64 {
-	taxD := 10000 / float64(tax)
-	return int64(float64(total) / float64((1 + taxD)))
-}
-
-func (c *CartGrain) HandleMessage(message *Message, isReplay bool) (*FrameWithPayload, error) {
+func (c *CartGrain) HandleMessage(message *Message, isReplay bool) ([]byte, error) {
+	log.Printf("Handling message %d", message.Type)
 	if message.TimeStamp == nil {
 		now := time.Now().Unix()
 		message.TimeStamp = &now
 	}
-	grainMutations.Inc()
 	var err error
 	switch message.Type {
-	case SetCartItemsType:
-		msg, ok := message.Content.(*messages.SetCartRequest)
-		if !ok {
-			err = fmt.Errorf("expected SetCartItems")
-		} else {
-
-			c.mu.Lock()
-			c.Items = make([]*CartItem, 0, len(msg.Items))
-			c.mu.Unlock()
-			for _, item := range msg.Items {
-				c.AddItem(item.Sku, int(item.Quantity), item.Country, item.StoreId)
-			}
-
-		}
 	case AddRequestType:
 		msg, ok := message.Content.(*messages.AddRequest)
 		if !ok {
-			err = fmt.Errorf("expected AddRequest")
+			err = fmt.Errorf("invalid content type")
 		} else {
-
-			existingItem, found := c.FindItemWithSku(msg.Sku)
-			if found {
-				existingItem.Quantity += int(msg.Quantity)
-				c.UpdateTotals()
-			} else {
-				return c.AddItem(msg.Sku, int(msg.Quantity), msg.Country, msg.StoreId)
-			}
-
+			return c.AddItem(msg.Sku)
 		}
 	case AddItemType:
 		msg, ok := message.Content.(*messages.AddItem)
 		if !ok {
-			err = fmt.Errorf("expected AddItem")
+			err = fmt.Errorf("invalid content type")
 		} else {
-
-			if msg.Quantity < 1 {
-				return nil, fmt.Errorf("invalid quantity")
-			}
-			existingItem, found := c.FindItemWithSku(msg.Sku)
-			if found {
-				existingItem.Quantity += int(msg.Quantity)
-				c.UpdateTotals()
-			} else {
-				c.mu.Lock()
-				c.lastItemId++
-				tax := 2500
-				if msg.Tax > 0 {
-					tax = int(msg.Tax)
-				}
-
-				taxAmount := GetTaxAmount(msg.Price, tax)
-
-				c.Items = append(c.Items, &CartItem{
-					Id:          c.lastItemId,
-					ItemId:      int(msg.ItemId),
-					Quantity:    int(msg.Quantity),
-					Sku:         msg.Sku,
-					Name:        msg.Name,
-					Price:       msg.Price,
-					TotalPrice:  msg.Price * int64(msg.Quantity),
-					TotalTax:    int64(taxAmount * int64(msg.Quantity)),
-					Image:       msg.Image,
-					Stock:       StockStatus(msg.Stock),
-					Disclaimer:  msg.Disclaimer,
-					Brand:       msg.Brand,
-					Category:    msg.Category,
-					Category2:   msg.Category2,
-					Category3:   msg.Category3,
-					Category4:   msg.Category4,
-					Category5:   msg.Category5,
-					OrgPrice:    msg.OrgPrice,
-					ArticleType: msg.ArticleType,
-					Outlet:      msg.Outlet,
-					SellerId:    msg.SellerId,
-					SellerName:  msg.SellerName,
-					Tax:         int(taxAmount),
-					TaxRate:     tax,
-					StoreId:     msg.StoreId,
-				})
-				c.UpdateTotals()
-				c.mu.Unlock()
-			}
-
-		}
-	case ChangeQuantityType:
-		msg, ok := message.Content.(*messages.ChangeQuantity)
-		if !ok {
-			err = fmt.Errorf("expected ChangeQuantity")
-		} else {
-
-			for i, item := range c.Items {
-				if item.Id == int(msg.Id) {
-					if msg.Quantity <= 0 {
-						//c.TotalPrice -= item.Price * int64(item.Quantity)
-						c.Items = append(c.Items[:i], c.Items[i+1:]...)
-					} else {
-						//diff := int(msg.Quantity) - item.Quantity
-						item.Quantity = int(msg.Quantity)
-						//c.TotalPrice += item.Price * int64(diff)
-					}
-
-					break
-				}
-			}
-			c.UpdateTotals()
-
-		}
-	case RemoveItemType:
-		msg, ok := message.Content.(*messages.RemoveItem)
-		if !ok {
-			err = fmt.Errorf("expected RemoveItem")
-		} else {
-
-			items := make([]*CartItem, 0, len(c.Items))
-			for _, item := range c.Items {
-				if item.Id == int(msg.Id) {
-					//c.TotalPrice -= item.Price * int64(item.Quantity)
-				} else {
-					items = append(items, item)
-				}
-			}
-			c.Items = items
-			c.UpdateTotals()
-		}
-	case SetDeliveryType:
-		msg, ok := message.Content.(*messages.SetDelivery)
-		if !ok {
-			err = fmt.Errorf("expected SetDelivery")
-		} else {
-
-			c.lastDeliveryId++
-			items := make([]int, 0)
-			withDelivery := c.ItemsWithDelivery()
-			if len(msg.Items) == 0 {
-				items = append(items, c.ItemsWithoutDelivery()...)
-			} else {
-				for _, id := range msg.Items {
-					for _, item := range c.Items {
-						if item.Id == int(id) {
-							if slices.Contains(withDelivery, item.Id) {
-								return nil, fmt.Errorf("item already has delivery")
-							}
-							items = append(items, int(item.Id))
-							break
-						}
-					}
-				}
-			}
-			if len(items) > 0 {
-				c.Deliveries = append(c.Deliveries, &CartDelivery{
-					Id:          c.lastDeliveryId,
-					Provider:    msg.Provider,
-					PickupPoint: msg.PickupPoint,
-					Price:       4900,
-					Items:       items,
-				})
-
-				c.UpdateTotals()
-
-			}
-
-		}
-	case RemoveDeliveryType:
-		msg, ok := message.Content.(*messages.RemoveDelivery)
-		if !ok {
-			err = fmt.Errorf("expected RemoveDelivery")
-		} else {
-
-			deliveries := make([]*CartDelivery, 0, len(c.Deliveries))
-			for _, delivery := range c.Deliveries {
-				if delivery.Id == int(msg.Id) {
-					c.TotalPrice -= delivery.Price
-				} else {
-					deliveries = append(deliveries, delivery)
-				}
-			}
-			c.Deliveries = deliveries
-			c.UpdateTotals()
-		}
-	case SetPickupPointType:
-		msg, ok := message.Content.(*messages.SetPickupPoint)
-		if !ok {
-			err = fmt.Errorf("expected SetPickupPoint")
-		} else {
-
-			for _, delivery := range c.Deliveries {
-				if delivery.Id == int(msg.DeliveryId) {
-					delivery.PickupPoint = &messages.PickupPoint{
-						Id:      msg.Id,
-						Address: msg.Address,
-						City:    msg.City,
-						Zip:     msg.Zip,
-						Country: msg.Country,
-						Name:    msg.Name,
-					}
-					break
-				}
-			}
-
-		}
-	case CreateCheckoutOrderType:
-		msg, ok := message.Content.(*messages.CreateCheckoutOrder)
-		if !ok {
-			err = fmt.Errorf("expected CreateCheckoutOrder")
-		} else {
-
-			orderLines := make([]*Line, 0, len(c.Items))
-
-			c.PaymentInProgress = true
-			c.Processing = true
-			for _, item := range c.Items {
-
-				orderLines = append(orderLines, &Line{
-					Type:           "physical",
-					Reference:      item.Sku,
-					Name:           item.Name,
-					Quantity:       item.Quantity,
-					UnitPrice:      int(item.Price),
-					TaxRate:        2500, // item.TaxRate,
-					QuantityUnit:   "st",
-					TotalAmount:    int(item.TotalPrice),
-					TotalTaxAmount: int(item.TotalTax),
-					ImageURL:       fmt.Sprintf("https://www.elgiganten.se%s", item.Image),
-				})
-			}
-			for _, line := range c.Deliveries {
-				if line.Price > 0 {
-					orderLines = append(orderLines, &Line{
-						Type:           "shipping_fee",
-						Reference:      line.Provider,
-						Name:           "Delivery",
-						Quantity:       1,
-						UnitPrice:      int(line.Price),
-						TaxRate:        2500, // item.TaxRate,
-						QuantityUnit:   "st",
-						TotalAmount:    int(line.Price),
-						TotalTaxAmount: int(GetTaxAmount(line.Price, 2500)),
-					})
-				}
-			}
-			order := CheckoutOrder{
-				PurchaseCountry:    "SE",
-				PurchaseCurrency:   "SEK",
-				Locale:             "sv-se",
-				OrderAmount:        int(c.TotalPrice),
-				OrderTaxAmount:     int(c.TotalTax),
-				OrderLines:         orderLines,
-				MerchantReference1: c.Id.String(),
-				MerchantURLS: &CheckoutMerchantURLS{
-					Terms:        msg.Terms,
-					Checkout:     msg.Checkout,
-					Confirmation: msg.Confirmation,
-					Validation:   msg.Validation,
-					Push:         msg.Push,
-				},
-			}
-			orderPayload, err := json.Marshal(order)
-			if err != nil {
-				return nil, err
-			}
-			var klarnaOrder *CheckoutOrder
-			if c.OrderReference != "" {
-				log.Printf("Updating order id %s", c.OrderReference)
-				klarnaOrder, err = KlarnaInstance.UpdateOrder(c.OrderReference, bytes.NewReader(orderPayload))
-			} else {
-				klarnaOrder, err = KlarnaInstance.CreateOrder(bytes.NewReader(orderPayload))
-			}
-			// log.Printf("Order result: %+v", klarnaOrder)
-			if nil != err {
-				log.Printf("error from klarna: %v", err)
-				return nil, err
-			}
-			if c.OrderReference == "" {
-				c.OrderReference = klarnaOrder.ID
-				c.PaymentStatus = klarnaOrder.Status
-			}
-
-			orderData, err := json.Marshal(klarnaOrder)
-			if nil != err {
-				return nil, err
-			}
-
-			result := MakeFrameWithPayload(RemoteCreateOrderReply, 200, orderData)
-			return &result, nil
-		}
-	case OrderCompletedType:
-		msg, ok := message.Content.(*messages.OrderCreated)
-		if !ok {
-			log.Printf("expected OrderCompleted, got %T", message.Content)
-			err = fmt.Errorf("expected OrderCompleted")
-		} else {
-			c.OrderReference = msg.OrderId
-			c.PaymentStatus = msg.Status
-			c.PaymentInProgress = false
+			c.Items = append(c.Items, CartItem{
+				Sku:   msg.Sku,
+				Name:  msg.Name,
+				Price: msg.Price,
+				Image: msg.Image,
+			})
+			c.TotalPrice += msg.Price
 		}
 	default:
-		err = fmt.Errorf("unknown message type %d", message.Type)
+		err = fmt.Errorf("unknown message type")
 	}
 	if err != nil {
 		return nil, err
 	}
-
 	if !isReplay {
-		c.mu.Lock()
 		c.storageMessages = append(c.storageMessages, *message)
-		c.mu.Unlock()
 	}
-	result, err := json.Marshal(c)
-	msg := MakeFrameWithPayload(RemoteHandleMutationReply, 200, result)
-	return &msg, err
-}
-
-func (c *CartGrain) UpdateTotals() {
-	c.TotalPrice = 0
-	c.TotalTax = 0
-	c.TotalDiscount = 0
-	for _, item := range c.Items {
-		rowTotal := item.Price * int64(item.Quantity)
-		rowTax := int64(item.Tax) * int64(item.Quantity)
-		item.TotalPrice = rowTotal
-		item.TotalTax = rowTax
-		c.TotalPrice += rowTotal
-		c.TotalTax += rowTax
-		itemDiff := max(0, item.OrgPrice-item.Price)
-		c.TotalDiscount += itemDiff * int64(item.Quantity)
-	}
-	for _, delivery := range c.Deliveries {
-		c.TotalPrice += delivery.Price
-		c.TotalTax += GetTaxAmount(delivery.Price, 2500)
-	}
-
+	return json.Marshal(c)
 }

deployment/deployment-no.yaml

@@ -1,276 +0,0 @@
-apiVersion: v1
-kind: Secret
-metadata:
-  name:  klarna-api-credentials
-data:
-  username: ZjQzZDY3YjEtNzA2Yy00NTk2LTliNTgtYjg1YjU2NDEwZTUw
-  password: a2xhcm5hX3Rlc3RfYXBpX0trUWhWVE5yYVZsV2FsTnhTRVp3Y1ZSSFF5UkVNRmxyY25Kd1AxSndQMGdzWmpRelpEWTNZakV0TnpBMll5MDBOVGsyTFRsaU5UZ3RZamcxWWpVMk5ERXdaVFV3TERFc2JUUkNjRFpWU1RsTllsSk1aMlEyVEc4MmRVODNZMkozUlRaaFdEZDViV3AwYkhGV1JqTjVNQzlaYXow
-type: Opaque
----
-apiVersion: apps/v1
-kind: Deployment
-metadata:
-  labels:
-    app: cart-actor
-    arch: amd64
-  name: cart-actor-x86
-spec:
-  replicas: 0
-  selector:
-    matchLabels:
-      app: cart-actor
-      arch: amd64
-  template:
-    metadata:
-      labels:
-        app: cart-actor
-        actor-pool: cart
-        arch: amd64
-    spec:
-      affinity:
-        nodeAffinity:
-          requiredDuringSchedulingIgnoredDuringExecution:
-            nodeSelectorTerms:
-              - matchExpressions:
-                - key: kubernetes.io/arch
-                  operator: NotIn
-                  values:
-                    - arm64
-      volumes:
-        - name: data
-          nfs:
-            path: /i-data/7a8af061/nfs/cart-actor-no
-            server: 10.10.1.10
-      imagePullSecrets:
-        - name: regcred
-      serviceAccountName: default
-      containers:
-        - image: registry.knatofs.se/go-cart-actor-amd64:latest
-          name: cart-actor-amd64
-          imagePullPolicy: Always
-          lifecycle:
-            preStop:
-              exec:
-                command: ["sleep", "15"]
-          ports:
-            - containerPort: 8080
-              name: web
-            - containerPort: 1234
-              name: echo
-            - containerPort: 1337
-              name: rpc
-            - containerPort: 1338
-              name: quorum
-          livenessProbe:
-            httpGet:
-              path: /livez
-              port: web
-            failureThreshold: 1
-            periodSeconds: 10
-          readinessProbe:
-            httpGet:
-              path: /readyz
-              port: web
-            failureThreshold: 2
-            initialDelaySeconds: 2
-            periodSeconds: 10
-          volumeMounts:
-            - mountPath: "/data"
-              name: data
-          resources:
-            limits:
-              memory: "768Mi"
-            requests:
-              memory: "70Mi"
-              cpu: "1200m"
-          env:
-            - name: TZ
-              value: "Europe/Stockholm"
-            - name: KLARNA_API_USERNAME
-              valueFrom:
-                secretKeyRef:
-                  name: klarna-api-credentials
-                  key: username
-            - name: KLARNA_API_PASSWORD
-              valueFrom:
-                secretKeyRef:
-                  name: klarna-api-credentials
-                  key: password
-            - name: POD_IP
-              valueFrom:
-                fieldRef:
-                  fieldPath: status.podIP
-            - name: AMQP_URL
-              value: "amqp://admin:12bananer@rabbitmq.dev:5672/"
-            - name: BASE_URL
-              value: "https://s10n-no.tornberg.me"
-            - name: CART_BASE_URL
-              value: "https://cart-no.tornberg.me"
-            - name: POD_NAME
-              valueFrom:
-                fieldRef:
-                  fieldPath: metadata.name
----
-apiVersion: apps/v1
-kind: Deployment
-metadata:
-  labels:
-    app: cart-actor
-    arch: arm64
-  name: cart-actor-arm64
-spec:
-  replicas: 3
-  selector:
-    matchLabels:
-      app: cart-actor
-      arch: arm64
-  template:
-    metadata:
-      labels:
-        app: cart-actor
-        actor-pool: cart
-        arch: arm64
-    spec:
-      affinity:
-        nodeAffinity:
-          requiredDuringSchedulingIgnoredDuringExecution:
-            nodeSelectorTerms:
-              - matchExpressions:
-                - key: kubernetes.io/hostname
-                  operator: NotIn
-                  values:
-                    - masterpi
-                - key: kubernetes.io/arch
-                  operator: In
-                  values:
-                    - arm64
-      volumes:
-        - name: data
-          nfs:
-            path: /i-data/7a8af061/nfs/cart-actor-no
-            server: 10.10.1.10
-      imagePullSecrets:
-        - name: regcred
-      serviceAccountName: default
-      containers:
-        - image: registry.knatofs.se/go-cart-actor:latest
-          name: cart-actor-arm64
-          imagePullPolicy: Always
-          lifecycle:
-            preStop:
-              exec:
-                command: ["sleep", "15"]
-          ports:
-            - containerPort: 8080
-              name: web
-            - containerPort: 1234
-              name: echo
-            - containerPort: 1337
-              name: rpc
-            - containerPort: 1338
-              name: quorum
-          livenessProbe:
-            httpGet:
-              path: /livez
-              port: web
-            failureThreshold: 1
-            periodSeconds: 10
-          readinessProbe:
-            httpGet:
-              path: /readyz
-              port: web
-            failureThreshold: 2
-            initialDelaySeconds: 2
-            periodSeconds: 10
-          volumeMounts:
-            - mountPath: "/data"
-              name: data
-          resources:
-            limits:
-              memory: "768Mi"
-            requests:
-              memory: "70Mi"
-              cpu: "1200m"
-          env:
-            - name: TZ
-              value: "Europe/Stockholm"
-            - name: KLARNA_API_USERNAME
-              valueFrom:
-                secretKeyRef:
-                  name: klarna-api-credentials
-                  key: username
-            - name: KLARNA_API_PASSWORD
-              valueFrom:
-                secretKeyRef:
-                  name: klarna-api-credentials
-                  key: password
-            - name: POD_IP
-              valueFrom:
-                fieldRef:
-                  fieldPath: status.podIP
-            - name: AMQP_URL
-              value: "amqp://admin:12bananer@rabbitmq.dev:5672/"
-            - name: BASE_URL
-              value: "https://s10n-no.tornberg.me"
-            - name: CART_BASE_URL
-              value: "https://cart-no.tornberg.me"
-            - name: POD_NAME
-              valueFrom:
-                fieldRef:
-                  fieldPath: metadata.name
----
-kind: Service
-apiVersion: v1
-metadata:
-  name: cart-echo
-spec:
-  selector:
-    app: cart-actor
-  type: LoadBalancer
-  ports:
-    - name: echo
-      port: 1234
----
-kind: Service
-apiVersion: v1
-metadata:
-  name: cart-actor
-  annotations:
-    prometheus.io/port: "8080"
-    prometheus.io/scrape: "true"
-    prometheus.io/path: "/metrics"
-spec:
-  selector:
-    app: cart-actor
-  ports:
-    - name: web
-      port: 8080
----
-apiVersion: networking.k8s.io/v1
-kind: Ingress
-metadata:
-  name: cart-ingress
-  annotations:
-    cert-manager.io/cluster-issuer: letsencrypt-prod
-    # nginx.ingress.kubernetes.io/affinity: "cookie"
-    # nginx.ingress.kubernetes.io/session-cookie-name: "cart-affinity"
-    # nginx.ingress.kubernetes.io/session-cookie-expires: "172800"
-    # nginx.ingress.kubernetes.io/session-cookie-max-age: "172800"
-    nginx.ingress.kubernetes.io/proxy-body-size: 4m
-spec:
-  ingressClassName: nginx
-  tls:
-    - hosts:
-        - cart-no.tornberg.me
-      secretName: cart-actor-no-tls-secret
-  rules:
-    - host: cart-no.tornberg.me
-      http:
-        paths:
-          - path: /
-            pathType: Prefix
-            backend:
-              service:
-                name: cart-actor
-                port:
-                  number: 8080

deployment/deployment.yaml

@@ -1,272 +0,0 @@
-apiVersion: v1
-kind: Secret
-metadata:
-  name:  klarna-api-credentials
-data:
-  username: ZjQzZDY3YjEtNzA2Yy00NTk2LTliNTgtYjg1YjU2NDEwZTUw
-  password: a2xhcm5hX3Rlc3RfYXBpX0trUWhWVE5yYVZsV2FsTnhTRVp3Y1ZSSFF5UkVNRmxyY25Kd1AxSndQMGdzWmpRelpEWTNZakV0TnpBMll5MDBOVGsyTFRsaU5UZ3RZamcxWWpVMk5ERXdaVFV3TERFc2JUUkNjRFpWU1RsTllsSk1aMlEyVEc4MmRVODNZMkozUlRaaFdEZDViV3AwYkhGV1JqTjVNQzlaYXow
-type: Opaque
----
-apiVersion: apps/v1
-kind: Deployment
-metadata:
-  labels:
-    app: cart-actor
-    arch: amd64
-  name: cart-actor-x86
-spec:
-  replicas: 0
-  selector:
-    matchLabels:
-      app: cart-actor
-      arch: amd64
-  template:
-    metadata:
-      labels:
-        app: cart-actor
-        actor-pool: cart
-        arch: amd64
-    spec:
-      affinity:
-        nodeAffinity:
-          requiredDuringSchedulingIgnoredDuringExecution:
-            nodeSelectorTerms:
-              - matchExpressions:
-                - key: kubernetes.io/arch
-                  operator: NotIn
-                  values:
-                    - arm64
-      volumes:
-        - name: data
-          nfs:
-            path: /i-data/7a8af061/nfs/cart-actor
-            server: 10.10.1.10
-      imagePullSecrets:
-        - name: regcred
-      serviceAccountName: default
-      containers:
-        - image: registry.knatofs.se/go-cart-actor-amd64:latest
-          name: cart-actor-amd64
-          imagePullPolicy: Always
-          lifecycle:
-            preStop:
-              exec:
-                command: ["sleep", "15"]
-          ports:
-            - containerPort: 8080
-              name: web
-            - containerPort: 1234
-              name: echo
-            - containerPort: 1337
-              name: rpc
-            - containerPort: 1338
-              name: quorum
-          livenessProbe:
-            httpGet:
-              path: /livez
-              port: web
-            failureThreshold: 1
-            periodSeconds: 10
-          readinessProbe:
-            httpGet:
-              path: /readyz
-              port: web
-            failureThreshold: 2
-            initialDelaySeconds: 2
-            periodSeconds: 10
-          volumeMounts:
-            - mountPath: "/data"
-              name: data
-          resources:
-            limits:
-              memory: "768Mi"
-            requests:
-              memory: "70Mi"
-              cpu: "1200m"
-          env:
-            - name: TZ
-              value: "Europe/Stockholm"
-            - name: KLARNA_API_USERNAME
-              valueFrom:
-                secretKeyRef:
-                  name: klarna-api-credentials
-                  key: username
-            - name: KLARNA_API_PASSWORD
-              valueFrom:
-                secretKeyRef:
-                  name: klarna-api-credentials
-                  key: password
-            - name: POD_IP
-              valueFrom:
-                fieldRef:
-                  fieldPath: status.podIP
-            - name: AMQP_URL
-              value: "amqp://admin:12bananer@rabbitmq.dev:5672/"
-            # - name: BASE_URL
-            #   value: "https://s10n-no.tornberg.me"
-            - name: POD_NAME
-              valueFrom:
-                fieldRef:
-                  fieldPath: metadata.name
----
-apiVersion: apps/v1
-kind: Deployment
-metadata:
-  labels:
-    app: cart-actor
-    arch: arm64
-  name: cart-actor-arm64
-spec:
-  replicas: 0
-  selector:
-    matchLabels:
-      app: cart-actor
-      arch: arm64
-  template:
-    metadata:
-      labels:
-        app: cart-actor
-        actor-pool: cart
-        arch: arm64
-    spec:
-      affinity:
-        nodeAffinity:
-          requiredDuringSchedulingIgnoredDuringExecution:
-            nodeSelectorTerms:
-              - matchExpressions:
-                - key: kubernetes.io/hostname
-                  operator: NotIn
-                  values:
-                    - masterpi
-                - key: kubernetes.io/arch
-                  operator: In
-                  values:
-                    - arm64
-      volumes:
-        - name: data
-          nfs:
-            path: /i-data/7a8af061/nfs/cart-actor
-            server: 10.10.1.10
-      imagePullSecrets:
-        - name: regcred
-      serviceAccountName: default
-      containers:
-        - image: registry.knatofs.se/go-cart-actor:latest
-          name: cart-actor-arm64
-          imagePullPolicy: Always
-          lifecycle:
-            preStop:
-              exec:
-                command: ["sleep", "15"]
-          ports:
-            - containerPort: 8080
-              name: web
-            - containerPort: 1234
-              name: echo
-            - containerPort: 1337
-              name: rpc
-            - containerPort: 1338
-              name: quorum
-          livenessProbe:
-            httpGet:
-              path: /livez
-              port: web
-            failureThreshold: 1
-            periodSeconds: 10
-          readinessProbe:
-            httpGet:
-              path: /readyz
-              port: web
-            failureThreshold: 2
-            initialDelaySeconds: 2
-            periodSeconds: 10
-          volumeMounts:
-            - mountPath: "/data"
-              name: data
-          resources:
-            limits:
-              memory: "768Mi"
-            requests:
-              memory: "70Mi"
-              cpu: "1200m"
-          env:
-            - name: TZ
-              value: "Europe/Stockholm"
-            - name: KLARNA_API_USERNAME
-              valueFrom:
-                secretKeyRef:
-                  name: klarna-api-credentials
-                  key: username
-            - name: KLARNA_API_PASSWORD
-              valueFrom:
-                secretKeyRef:
-                  name: klarna-api-credentials
-                  key: password
-            - name: POD_IP
-              valueFrom:
-                fieldRef:
-                  fieldPath: status.podIP
-            - name: AMQP_URL
-              value: "amqp://admin:12bananer@rabbitmq.dev:5672/"
-            # - name: BASE_URL
-            #   value: "https://s10n-no.tornberg.me"
-            - name: POD_NAME
-              valueFrom:
-                fieldRef:
-                  fieldPath: metadata.name
----
-kind: Service
-apiVersion: v1
-metadata:
-  name: cart-echo
-spec:
-  selector:
-    app: cart-actor
-  type: LoadBalancer
-  ports:
-    - name: echo
-      port: 1234
----
-kind: Service
-apiVersion: v1
-metadata:
-  name: cart-actor
-  annotations:
-    prometheus.io/port: "8080"
-    prometheus.io/scrape: "true"
-    prometheus.io/path: "/metrics"
-spec:
-  selector:
-    app: cart-actor
-  ports:
-    - name: web
-      port: 8080
----
-apiVersion: networking.k8s.io/v1
-kind: Ingress
-metadata:
-  name: cart-ingress
-  annotations:
-    cert-manager.io/cluster-issuer: letsencrypt-prod
-    # nginx.ingress.kubernetes.io/affinity: "cookie"
-    # nginx.ingress.kubernetes.io/session-cookie-name: "cart-affinity"
-    # nginx.ingress.kubernetes.io/session-cookie-expires: "172800"
-    # nginx.ingress.kubernetes.io/session-cookie-max-age: "172800"
-    nginx.ingress.kubernetes.io/proxy-body-size: 4m
-spec:
-  ingressClassName: nginx
-  tls:
-    - hosts:
-        - cart.tornberg.me
-      secretName: cart-actor-tls-secret
-  rules:
-    - host: cart.tornberg.me
-      http:
-        paths:
-          - path: /
-            pathType: Prefix
-            backend:
-              service:
-                name: cart-actor
-                port:
-                  number: 8080

deployment/roles.yaml

@@ -1,22 +0,0 @@
-apiVersion: rbac.authorization.k8s.io/v1
-kind: ClusterRole
-metadata:
-  name: cart-discovery
-rules:
-  - apiGroups: [""] # "" indicates the core API group
-    resources: ["pods","services", "deployments"]
-    verbs: ["get", "watch", "list"]
----
-apiVersion: rbac.authorization.k8s.io/v1
-kind: ClusterRoleBinding
-metadata:
-  name: cart-discovery-binding
-subjects:
-- kind: ServiceAccount
-  name: default
-  namespace: cart
-  apiGroup: ""
-roleRef:
-  kind: ClusterRole
-  name: cart-discovery
-  apiGroup: ""

deployment/scaling.yaml

@@ -1,25 +0,0 @@
-apiVersion: autoscaling/v1
-kind: HorizontalPodAutoscaler
-metadata:
-  name: cart-scaler-amd
-spec:
-  scaleTargetRef:
-    apiVersion: apps/v1
-    kind: Deployment
-    name: cart-actor-x86
-  minReplicas: 3
-  maxReplicas: 9
-  targetCPUUtilizationPercentage: 30
----
-apiVersion: autoscaling/v1
-kind: HorizontalPodAutoscaler
-metadata:
-  name: cart-scaler-arm
-spec:
-  scaleTargetRef:
-    apiVersion: apps/v1
-    kind: Deployment
-    name: cart-actor-arm64
-  minReplicas: 3
-  maxReplicas: 9
-  targetCPUUtilizationPercentage: 30

discarded-host.go

@@ -1,84 +0,0 @@
-package main
-
-import (
-	"fmt"
-	"log"
-	"net"
-	"sync"
-	"time"
-)
-
-type DiscardedHost struct {
-	Host  string
-	Tries int
-}
-
-type DiscardedHostHandler struct {
-	mu           sync.RWMutex
-	port         int
-	hosts        []*DiscardedHost
-	onConnection *func(string)
-}
-
-func (d *DiscardedHostHandler) run() {
-	for range time.Tick(time.Second) {
-		d.mu.RLock()
-		lst := make([]*DiscardedHost, 0, len(d.hosts))
-		for _, host := range d.hosts {
-			if host.Tries >= 0 && host.Tries < 5 {
-				go d.testConnection(host)
-				lst = append(lst, host)
-			} else {
-				if host.Tries > 0 {
-					log.Printf("Host %s discarded after %d tries", host.Host, host.Tries)
-				}
-			}
-		}
-		d.mu.RUnlock()
-		d.mu.Lock()
-		d.hosts = lst
-		d.mu.Unlock()
-	}
-
-}
-
-func (d *DiscardedHostHandler) testConnection(host *DiscardedHost) {
-	addr := fmt.Sprintf("%s:%d", host.Host, d.port)
-	conn, err := net.Dial("tcp", addr)
-
-	if err != nil {
-		host.Tries++
-		if host.Tries >= 5 {
-			// Exceeded retry threshold; will be dropped by run loop.
-		}
-	} else {
-		conn.Close()
-		if d.onConnection != nil {
-			fn := *d.onConnection
-			fn(host.Host)
-		}
-	}
-}
-
-func NewDiscardedHostHandler(port int) *DiscardedHostHandler {
-	ret := &DiscardedHostHandler{
-		hosts: make([]*DiscardedHost, 0),
-		port:  port,
-	}
-	go ret.run()
-	return ret
-}
-
-func (d *DiscardedHostHandler) SetReconnectHandler(fn func(string)) {
-	d.onConnection = &fn
-}
-
-func (d *DiscardedHostHandler) AppendHost(host string) {
-	d.mu.Lock()
-	defer d.mu.Unlock()
-	log.Printf("Adding host %s to retry list", host)
-	d.hosts = append(d.hosts, &DiscardedHost{
-		Host:  host,
-		Tries: 0,
-	})
-}

discovery.go

@@ -1,77 +0,0 @@
-package main
-
-import (
-	"context"
-
-	v1 "k8s.io/api/core/v1"
-	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
-	"k8s.io/apimachinery/pkg/watch"
-	"k8s.io/client-go/kubernetes"
-	"k8s.io/client-go/tools/cache"
-	toolsWatch "k8s.io/client-go/tools/watch"
-)
-
-type Discovery interface {
-	Discover() ([]string, error)
-	Watch() (<-chan HostChange, error)
-}
-
-type K8sDiscovery struct {
-	ctx    context.Context
-	client *kubernetes.Clientset
-}
-
-func (k *K8sDiscovery) Discover() ([]string, error) {
-	return k.DiscoverInNamespace("")
-}
-func (k *K8sDiscovery) DiscoverInNamespace(namespace string) ([]string, error) {
-	pods, err := k.client.CoreV1().Pods(namespace).List(k.ctx, metav1.ListOptions{
-		LabelSelector: "actor-pool=cart",
-	})
-	if err != nil {
-		return nil, err
-	}
-	hosts := make([]string, 0, len(pods.Items))
-	for _, pod := range pods.Items {
-		hosts = append(hosts, pod.Status.PodIP)
-	}
-	return hosts, nil
-}
-
-type HostChange struct {
-	Host string
-	Type watch.EventType
-}
-
-func (k *K8sDiscovery) Watch() (<-chan HostChange, error) {
-	timeout := int64(30)
-	watcherFn := func(options metav1.ListOptions) (watch.Interface, error) {
-		return k.client.CoreV1().Pods("").Watch(k.ctx, metav1.ListOptions{
-			LabelSelector:  "actor-pool=cart",
-			TimeoutSeconds: &timeout,
-		})
-	}
-	watcher, err := toolsWatch.NewRetryWatcher("1", &cache.ListWatch{WatchFunc: watcherFn})
-	if err != nil {
-		return nil, err
-	}
-	ch := make(chan HostChange)
-	go func() {
-		for event := range watcher.ResultChan() {
-
-			pod := event.Object.(*v1.Pod)
-			ch <- HostChange{
-				Host: pod.Status.PodIP,
-				Type: event.Type,
-			}
-		}
-	}()
-	return ch, nil
-}
-
-func NewK8sDiscovery(client *kubernetes.Clientset) *K8sDiscovery {
-	return &K8sDiscovery{
-		ctx:    context.Background(),
-		client: client,
-	}
-}

discovery_test.go

@@ -1,51 +0,0 @@
-package main
-
-import (
-	"testing"
-	"time"
-
-	"k8s.io/client-go/kubernetes"
-	"k8s.io/client-go/tools/clientcmd"
-)
-
-func TestDiscovery(t *testing.T) {
-	config, err := clientcmd.BuildConfigFromFlags("", "/home/mats/.kube/config")
-	if err != nil {
-		t.Errorf("Error building config: %v", err)
-	}
-	client, err := kubernetes.NewForConfig(config)
-	if err != nil {
-		t.Errorf("Error creating client: %v", err)
-	}
-	d := NewK8sDiscovery(client)
-	res, err := d.DiscoverInNamespace("")
-	if err != nil {
-		t.Errorf("Error discovering: %v", err)
-	}
-	if len(res) == 0 {
-		t.Errorf("Expected at least one host, got none")
-	}
-}
-
-func TestWatch(t *testing.T) {
-	config, err := clientcmd.BuildConfigFromFlags("", "/home/mats/.kube/config")
-	if err != nil {
-		t.Errorf("Error building config: %v", err)
-	}
-	client, err := kubernetes.NewForConfig(config)
-	if err != nil {
-		t.Errorf("Error creating client: %v", err)
-	}
-	d := NewK8sDiscovery(client)
-	ch, err := d.Watch()
-	if err != nil {
-		t.Errorf("Error watching: %v", err)
-	}
-
-	select {
-	case m := <-ch:
-		t.Logf("Received watch %v", m)
-	case <-time.After(5 * time.Second):
-		t.Errorf("Timeout waiting for watch")
-	}
-}

disk-storage.go

@@ -2,6 +2,7 @@ package main
 
 import (
 	"encoding/gob"
+	"errors"
 	"fmt"
 	"log"
 	"os"
@@ -24,11 +25,10 @@ func NewDiskStorage(stateFile string) (*DiskStorage, error) {
 }
 
 func saveMessages(messages []StorableMessage, id CartId) error {
-
+	log.Printf("%d messages to save for %s", len(messages), id)
 	if len(messages) == 0 {
 		return nil
 	}
-	log.Printf("%d messages to save for grain id %s", len(messages), id)
 	var file *os.File
 	var err error
 	path := getCartPath(id.String())
@@ -54,19 +54,18 @@ func getCartPath(id string) string {
 func loadMessages(grain Grain, id CartId) error {
 	var err error
 	path := getCartPath(id.String())
-
+	if _, err = os.Stat(path); errors.Is(err, os.ErrNotExist) {
+		return err
+	}
 	file, err := os.Open(path)
 	if err != nil {
-		if os.IsNotExist(err) {
-			return nil
-		}
 		return err
 	}
 	defer file.Close()
 
 	for err == nil {
 		var msg Message
-		err = ReadMessage(file, &msg)
+		err = MessageFromReader(file, &msg)
 		if err == nil {
 			grain.HandleMessage(&msg, true)
 		}

frames.go

@@ -1,102 +0,0 @@
-package main
-
-// Minimal frame abstractions retained after removal of the legacy TCP/frame
-// networking layer. These types remain only to avoid a wide cascading refactor
-// across existing grain / pool logic that still constructs and passes
-// FrameWithPayload objects internally.
-//
-// The original responsibilities this replaces:
-//   - Binary framing, checksums, network IO
-//   - Distinction between request / reply frame types
-//
-// What remains:
-//   - A light weight container (FrameWithPayload) used as an in‑process
-//     envelope for status code + typed marker + payload bytes (JSON or proto).
-//   - Message / status constants referenced in existing code paths.
-//
-// Recommended future cleanup (post‑migration):
-//   - Remove FrameType entirely and replace with enumerated semantic results
-//     or error values.
-//   - Replace FrameWithPayload with a struct { Status int; Data []byte }.
-//   - Remove remote_* reply type branching once all callers rely on gRPC
-//     status + strongly typed responses.
-//
-// For now we keep this minimal surface to keep the gRPC migration focused.
-
-type (
-	// FrameType is a symbolic identifier carried through existing code paths.
-	// No ordering or bit semantics are required anymore.
-	FrameType  uint32
-	StatusCode uint32
-)
-
-type Frame struct {
-	Type       FrameType
-	StatusCode StatusCode
-	Length     uint32
-	// Checksum retained for compatibility; no longer validated.
-	Checksum uint32
-}
-
-// FrameWithPayload wraps a Frame with an opaque payload.
-// Payload usually contains JSON encoded cart state or an error message.
-type FrameWithPayload struct {
-	Frame
-	Payload []byte
-}
-
-// -----------------------------------------------------------------------------
-// Legacy Frame Type Constants (minimal subset still referenced)
-// -----------------------------------------------------------------------------
-const (
-	RemoteGetState            = FrameType(0x01)
-	RemoteHandleMutation      = FrameType(0x02)
-	ResponseBody              = FrameType(0x03) // (rarely used; kept for completeness)
-	RemoteGetStateReply       = FrameType(0x04)
-	RemoteHandleMutationReply = FrameType(0x05)
-	RemoteCreateOrderReply    = FrameType(0x06)
-)
-
-// MakeFrameWithPayload constructs an in‑process frame wrapper.
-// Length & Checksum are filled for backward compatibility (no validation logic
-// depends on the checksum anymore).
-func MakeFrameWithPayload(msg FrameType, statusCode StatusCode, payload []byte) FrameWithPayload {
-	length := uint32(len(payload))
-	return FrameWithPayload{
-		Frame: Frame{
-			Type:       msg,
-			StatusCode: statusCode,
-			Length:     length,
-			Checksum:   (uint32(msg) + uint32(statusCode) + length) / 8, // simple legacy formula
-		},
-		Payload: payload,
-	}
-}
-
-// Clone creates a shallow copy of the frame, duplicating the payload slice.
-func (f *FrameWithPayload) Clone() *FrameWithPayload {
-	if f == nil {
-		return nil
-	}
-	cp := make([]byte, len(f.Payload))
-	copy(cp, f.Payload)
-	return &FrameWithPayload{
-		Frame:   f.Frame,
-		Payload: cp,
-	}
-}
-
-// NewErrorFrame helper for creating an error frame with a textual payload.
-func NewErrorFrame(msg FrameType, code StatusCode, err error) FrameWithPayload {
-	var b []byte
-	if err != nil {
-		b = []byte(err.Error())
-	}
-	return MakeFrameWithPayload(msg, code, b)
-}
-
-// IsSuccess returns true if the status code indicates success in the
-// conventional HTTP style range (200–299). This mirrors previous usage patterns.
-func (f *FrameWithPayload) IsSuccess() bool {
-	return f != nil && f.StatusCode >= 200 && f.StatusCode < 300
-}

go.mod

@@ -1,73 +1,26 @@
 module git.tornberg.me/go-cart-actor
 
-go 1.25.1
+go 1.23.0
+
+toolchain go1.23.2
 
 require (
-	github.com/google/uuid v1.6.0
-	github.com/matst80/slask-finder v0.0.0-20251009175145-ce05aff5a548
-	github.com/prometheus/client_golang v1.23.2
-	github.com/rabbitmq/amqp091-go v1.10.0
-	google.golang.org/grpc v1.76.0
-	google.golang.org/protobuf v1.36.10
-	k8s.io/api v0.34.1
-	k8s.io/apimachinery v0.34.1
-	k8s.io/client-go v0.34.1
-)
-
-require (
-	github.com/RoaringBitmap/roaring/v2 v2.10.0 // indirect
+	cloud.google.com/go/compute/metadata v0.3.0 // indirect
 	github.com/beorn7/perks v1.0.1 // indirect
-	github.com/bits-and-blooms/bitset v1.24.0 // indirect
 	github.com/cespare/xxhash/v2 v2.3.0 // indirect
-	github.com/davecgh/go-spew v1.1.2-0.20180830191138-d8f796af33cc // indirect
-	github.com/emicklei/go-restful/v3 v3.13.0 // indirect
-	github.com/fxamacker/cbor/v2 v2.9.0 // indirect
-	github.com/go-logr/logr v1.4.3 // indirect
-	github.com/go-openapi/jsonpointer v0.22.1 // indirect
-	github.com/go-openapi/jsonreference v0.21.2 // indirect
-	github.com/go-openapi/swag v0.25.1 // indirect
-	github.com/go-openapi/swag/cmdutils v0.25.1 // indirect
-	github.com/go-openapi/swag/conv v0.25.1 // indirect
-	github.com/go-openapi/swag/fileutils v0.25.1 // indirect
-	github.com/go-openapi/swag/jsonname v0.25.1 // indirect
-	github.com/go-openapi/swag/jsonutils v0.25.1 // indirect
-	github.com/go-openapi/swag/loading v0.25.1 // indirect
-	github.com/go-openapi/swag/mangling v0.25.1 // indirect
-	github.com/go-openapi/swag/netutils v0.25.1 // indirect
-	github.com/go-openapi/swag/stringutils v0.25.1 // indirect
-	github.com/go-openapi/swag/typeutils v0.25.1 // indirect
-	github.com/go-openapi/swag/yamlutils v0.25.1 // indirect
-	github.com/gogo/protobuf v1.3.2 // indirect
-	github.com/google/gnostic-models v0.7.0 // indirect
-	github.com/google/go-cmp v0.7.0 // indirect
+	github.com/dgryski/go-rendezvous v0.0.0-20200823014737-9f7001d12a5f // indirect
+	github.com/golang-jwt/jwt v3.2.2+incompatible // indirect
 	github.com/gorilla/schema v1.4.1 // indirect
-	github.com/json-iterator/go v1.1.12 // indirect
-	github.com/modern-go/concurrent v0.0.0-20180306012644-bacd9c7ef1dd // indirect
-	github.com/modern-go/reflect2 v1.0.3-0.20250322232337-35a7c28c31ee // indirect
-	github.com/mschoch/smat v0.2.0 // indirect
+	github.com/klauspost/compress v1.17.9 // indirect
+	github.com/matst80/slask-finder v0.0.0-20241104074525-3365cb1531ac // indirect
 	github.com/munnerz/goautoneg v0.0.0-20191010083416-a7dc8b61c822 // indirect
-	github.com/pmezard/go-difflib v1.0.0 // indirect
-	github.com/prometheus/client_model v0.6.2 // indirect
-	github.com/prometheus/common v0.67.1 // indirect
-	github.com/prometheus/procfs v0.17.0 // indirect
-	github.com/spf13/pflag v1.0.6 // indirect
-	github.com/x448/float16 v0.8.4 // indirect
-	go.yaml.in/yaml/v2 v2.4.3 // indirect
-	go.yaml.in/yaml/v3 v3.0.4 // indirect
-	golang.org/x/net v0.46.0 // indirect
-	golang.org/x/oauth2 v0.32.0 // indirect
-	golang.org/x/sys v0.37.0 // indirect
-	golang.org/x/term v0.36.0 // indirect
-	golang.org/x/text v0.30.0 // indirect
-	golang.org/x/time v0.14.0 // indirect
-	google.golang.org/genproto/googleapis/rpc v0.0.0-20251007200510-49b9836ed3ff // indirect
-	gopkg.in/evanphx/json-patch.v4 v4.13.0 // indirect
-	gopkg.in/inf.v0 v0.9.1 // indirect
-	k8s.io/klog/v2 v2.130.1 // indirect
-	k8s.io/kube-openapi v0.0.0-20250910181357-589584f1c912 // indirect
-	k8s.io/utils v0.0.0-20251002143259-bc988d571ff4 // indirect
-	sigs.k8s.io/json v0.0.0-20250730193827-2d320260d730 // indirect
-	sigs.k8s.io/randfill v1.0.0 // indirect
-	sigs.k8s.io/structured-merge-diff/v6 v6.3.0 // indirect
-	sigs.k8s.io/yaml v1.6.0 // indirect
+	github.com/prometheus/client_golang v1.20.4 // indirect
+	github.com/prometheus/client_model v0.6.1 // indirect
+	github.com/prometheus/common v0.55.0 // indirect
+	github.com/prometheus/procfs v0.15.1 // indirect
+	github.com/rabbitmq/amqp091-go v1.10.0 // indirect
+	github.com/redis/go-redis/v9 v9.5.3 // indirect
+	golang.org/x/oauth2 v0.23.0 // indirect
+	golang.org/x/sys v0.22.0 // indirect
+	google.golang.org/protobuf v1.34.2 // indirect
 )

go.sum

@@ -1,219 +1,36 @@
-github.com/RoaringBitmap/roaring/v2 v2.10.0 h1:HbJ8Cs71lfCJyvmSptxeMX2PtvOC8yonlU0GQcy2Ak0=
-github.com/RoaringBitmap/roaring/v2 v2.10.0/go.mod h1:FiJcsfkGje/nZBZgCu0ZxCPOKD/hVXDS2dXi7/eUFE0=
+cloud.google.com/go/compute/metadata v0.3.0 h1:Tz+eQXMEqDIKRsmY3cHTL6FVaynIjX2QxYC4trgAKZc=
+cloud.google.com/go/compute/metadata v0.3.0/go.mod h1:zFmK7XCadkQkj6TtorcaGlCW1hT1fIilQDwofLpJ20k=
 github.com/beorn7/perks v1.0.1 h1:VlbKKnNfV8bJzeqoa4cOKqO6bYr3WgKZxO8Z16+hsOM=
 github.com/beorn7/perks v1.0.1/go.mod h1:G2ZrVWU2WbWT9wwq4/hrbKbnv/1ERSJQ0ibhJ6rlkpw=
-github.com/bits-and-blooms/bitset v1.12.0/go.mod h1:7hO7Gc7Pp1vODcmWvKMRA9BNmbv6a/7QIWpPxHddWR8=
-github.com/bits-and-blooms/bitset v1.24.0 h1:H4x4TuulnokZKvHLfzVRTHJfFfnHEeSYJizujEZvmAM=
-github.com/bits-and-blooms/bitset v1.24.0/go.mod h1:7hO7Gc7Pp1vODcmWvKMRA9BNmbv6a/7QIWpPxHddWR8=
 github.com/cespare/xxhash/v2 v2.3.0 h1:UL815xU9SqsFlibzuggzjXhog7bL6oX9BbNZnL2UFvs=
 github.com/cespare/xxhash/v2 v2.3.0/go.mod h1:VGX0DQ3Q6kWi7AoAeZDth3/j3BFtOZR5XLFGgcrjCOs=
-github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
-github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
-github.com/davecgh/go-spew v1.1.2-0.20180830191138-d8f796af33cc h1:U9qPSI2PIWSS1VwoXQT9A3Wy9MM3WgvqSxFWenqJduM=
-github.com/davecgh/go-spew v1.1.2-0.20180830191138-d8f796af33cc/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
-github.com/emicklei/go-restful/v3 v3.13.0 h1:C4Bl2xDndpU6nJ4bc1jXd+uTmYPVUwkD6bFY/oTyCes=
-github.com/emicklei/go-restful/v3 v3.13.0/go.mod h1:6n3XBCmQQb25CM2LCACGz8ukIrRry+4bhvbpWn3mrbc=
-github.com/fxamacker/cbor/v2 v2.9.0 h1:NpKPmjDBgUfBms6tr6JZkTHtfFGcMKsw3eGcmD/sapM=
-github.com/fxamacker/cbor/v2 v2.9.0/go.mod h1:vM4b+DJCtHn+zz7h3FFp/hDAI9WNWCsZj23V5ytsSxQ=
-github.com/go-logr/logr v1.4.3 h1:CjnDlHq8ikf6E492q6eKboGOC0T8CDaOvkHCIg8idEI=
-github.com/go-logr/logr v1.4.3/go.mod h1:9T104GzyrTigFIr8wt5mBrctHMim0Nb2HLGrmQ40KvY=
-github.com/go-logr/stdr v1.2.2 h1:hSWxHoqTgW2S2qGc0LTAI563KZ5YKYRhT3MFKZMbjag=
-github.com/go-logr/stdr v1.2.2/go.mod h1:mMo/vtBO5dYbehREoey6XUKy/eSumjCCveDpRre4VKE=
-github.com/go-openapi/jsonpointer v0.22.1 h1:sHYI1He3b9NqJ4wXLoJDKmUmHkWy/L7rtEo92JUxBNk=
-github.com/go-openapi/jsonpointer v0.22.1/go.mod h1:pQT9OsLkfz1yWoMgYFy4x3U5GY5nUlsOn1qSBH5MkCM=
-github.com/go-openapi/jsonreference v0.21.2 h1:Wxjda4M/BBQllegefXrY/9aq1fxBA8sI5M/lFU6tSWU=
-github.com/go-openapi/jsonreference v0.21.2/go.mod h1:pp3PEjIsJ9CZDGCNOyXIQxsNuroxm8FAJ/+quA0yKzQ=
-github.com/go-openapi/swag v0.25.1 h1:6uwVsx+/OuvFVPqfQmOOPsqTcm5/GkBhNwLqIR916n8=
-github.com/go-openapi/swag v0.25.1/go.mod h1:bzONdGlT0fkStgGPd3bhZf1MnuPkf2YAys6h+jZipOo=
-github.com/go-openapi/swag/cmdutils v0.25.1 h1:nDke3nAFDArAa631aitksFGj2omusks88GF1VwdYqPY=
-github.com/go-openapi/swag/cmdutils v0.25.1/go.mod h1:pdae/AFo6WxLl5L0rq87eRzVPm/XRHM3MoYgRMvG4A0=
-github.com/go-openapi/swag/conv v0.25.1 h1:+9o8YUg6QuqqBM5X6rYL/p1dpWeZRhoIt9x7CCP+he0=
-github.com/go-openapi/swag/conv v0.25.1/go.mod h1:Z1mFEGPfyIKPu0806khI3zF+/EUXde+fdeksUl2NiDs=
-github.com/go-openapi/swag/fileutils v0.25.1 h1:rSRXapjQequt7kqalKXdcpIegIShhTPXx7yw0kek2uU=
-github.com/go-openapi/swag/fileutils v0.25.1/go.mod h1:+NXtt5xNZZqmpIpjqcujqojGFek9/w55b3ecmOdtg8M=
-github.com/go-openapi/swag/jsonname v0.25.1 h1:Sgx+qbwa4ej6AomWC6pEfXrA6uP2RkaNjA9BR8a1RJU=
-github.com/go-openapi/swag/jsonname v0.25.1/go.mod h1:71Tekow6UOLBD3wS7XhdT98g5J5GR13NOTQ9/6Q11Zo=
-github.com/go-openapi/swag/jsonutils v0.25.1 h1:AihLHaD0brrkJoMqEZOBNzTLnk81Kg9cWr+SPtxtgl8=
-github.com/go-openapi/swag/jsonutils v0.25.1/go.mod h1:JpEkAjxQXpiaHmRO04N1zE4qbUEg3b7Udll7AMGTNOo=
-github.com/go-openapi/swag/jsonutils/fixtures_test v0.25.1 h1:DSQGcdB6G0N9c/KhtpYc71PzzGEIc/fZ1no35x4/XBY=
-github.com/go-openapi/swag/jsonutils/fixtures_test v0.25.1/go.mod h1:kjmweouyPwRUEYMSrbAidoLMGeJ5p6zdHi9BgZiqmsg=
-github.com/go-openapi/swag/loading v0.25.1 h1:6OruqzjWoJyanZOim58iG2vj934TysYVptyaoXS24kw=
-github.com/go-openapi/swag/loading v0.25.1/go.mod h1:xoIe2EG32NOYYbqxvXgPzne989bWvSNoWoyQVWEZicc=
-github.com/go-openapi/swag/mangling v0.25.1 h1:XzILnLzhZPZNtmxKaz/2xIGPQsBsvmCjrJOWGNz/ync=
-github.com/go-openapi/swag/mangling v0.25.1/go.mod h1:CdiMQ6pnfAgyQGSOIYnZkXvqhnnwOn997uXZMAd/7mQ=
-github.com/go-openapi/swag/netutils v0.25.1 h1:2wFLYahe40tDUHfKT1GRC4rfa5T1B4GWZ+msEFA4Fl4=
-github.com/go-openapi/swag/netutils v0.25.1/go.mod h1:CAkkvqnUJX8NV96tNhEQvKz8SQo2KF0f7LleiJwIeRE=
-github.com/go-openapi/swag/stringutils v0.25.1 h1:Xasqgjvk30eUe8VKdmyzKtjkVjeiXx1Iz0zDfMNpPbw=
-github.com/go-openapi/swag/stringutils v0.25.1/go.mod h1:JLdSAq5169HaiDUbTvArA2yQxmgn4D6h4A+4HqVvAYg=
-github.com/go-openapi/swag/typeutils v0.25.1 h1:rD/9HsEQieewNt6/k+JBwkxuAHktFtH3I3ysiFZqukA=
-github.com/go-openapi/swag/typeutils v0.25.1/go.mod h1:9McMC/oCdS4BKwk2shEB7x17P6HmMmA6dQRtAkSnNb8=
-github.com/go-openapi/swag/yamlutils v0.25.1 h1:mry5ez8joJwzvMbaTGLhw8pXUnhDK91oSJLDPF1bmGk=
-github.com/go-openapi/swag/yamlutils v0.25.1/go.mod h1:cm9ywbzncy3y6uPm/97ysW8+wZ09qsks+9RS8fLWKqg=
-github.com/go-task/slim-sprig/v3 v3.0.0 h1:sUs3vkvUymDpBKi3qH1YSqBQk9+9D/8M2mN1vB6EwHI=
-github.com/go-task/slim-sprig/v3 v3.0.0/go.mod h1:W848ghGpv3Qj3dhTPRyJypKRiqCdHZiAzKg9hl15HA8=
-github.com/gogo/protobuf v1.3.2 h1:Ov1cvc58UF3b5XjBnZv7+opcTcQFZebYjWzi34vdm4Q=
-github.com/gogo/protobuf v1.3.2/go.mod h1:P1XiOD3dCwIKUDQYPy72D8LYyHL2YPYrpS2s69NZV8Q=
-github.com/golang/protobuf v1.5.4 h1:i7eJL8qZTpSEXOPTxNKhASYpMn+8e5Q6AdndVa1dWek=
-github.com/golang/protobuf v1.5.4/go.mod h1:lnTiLA8Wa4RWRcIUkrtSVa5nRhsEGBg48fD6rSs7xps=
-github.com/google/gnostic-models v0.7.0 h1:qwTtogB15McXDaNqTZdzPJRHvaVJlAl+HVQnLmJEJxo=
-github.com/google/gnostic-models v0.7.0/go.mod h1:whL5G0m6dmc5cPxKc5bdKdEN3UjI7OUGxBlw57miDrQ=
-github.com/google/go-cmp v0.7.0 h1:wk8382ETsv4JYUZwIsn6YpYiWiBsYLSJiTsyBybVuN8=
-github.com/google/go-cmp v0.7.0/go.mod h1:pXiqmnSA92OHEEa9HXL2W4E7lf9JzCmGVUdgjX3N/iU=
-github.com/google/gofuzz v1.0.0/go.mod h1:dBl0BpW6vV/+mYPU4Po3pmUjxk6FQPldtuIdl/M65Eg=
-github.com/google/pprof v0.0.0-20241029153458-d1b30febd7db h1:097atOisP2aRj7vFgYQBbFN4U4JNXUNYpxael3UzMyo=
-github.com/google/pprof v0.0.0-20241029153458-d1b30febd7db/go.mod h1:vavhavw2zAxS5dIdcRluK6cSGGPlZynqzFM8NdvU144=
-github.com/google/uuid v1.6.0 h1:NIvaJDMOsjHA8n1jAhLSgzrAzy1Hgr+hNrb57e+94F0=
-github.com/google/uuid v1.6.0/go.mod h1:TIyPZe4MgqvfeYDBFedMoGGpEw/LqOeaOT+nhxU+yHo=
+github.com/dgryski/go-rendezvous v0.0.0-20200823014737-9f7001d12a5f h1:lO4WD4F/rVNCu3HqELle0jiPLLBs70cWOduZpkS1E78=
+github.com/dgryski/go-rendezvous v0.0.0-20200823014737-9f7001d12a5f/go.mod h1:cuUVRXasLTGF7a8hSLbxyZXjz+1KgoB3wDUb6vlszIc=
+github.com/golang-jwt/jwt v3.2.2+incompatible h1:IfV12K8xAKAnZqdXVzCZ+TOjboZ2keLg81eXfW3O+oY=
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-gopkg.in/evanphx/json-patch.v4 v4.13.0 h1:czT3CmqEaQ1aanPc5SdlgQrrEIb8w/wwCvWWnfEbYzo=
-gopkg.in/evanphx/json-patch.v4 v4.13.0/go.mod h1:p8EYWUEYMpynmqDbY58zCKCFZw8pRWMG4EsWvDvM72M=
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-gopkg.in/inf.v0 v0.9.1/go.mod h1:cWUDdTG/fYaXco+Dcufb5Vnc6Gp2YChqWtbxRZE0mXw=
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-gopkg.in/yaml.v3 v3.0.0/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
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-k8s.io/utils v0.0.0-20251002143259-bc988d571ff4/go.mod h1:OLgZIPagt7ERELqWJFomSt595RzquPNLL48iOWgYOg0=
-sigs.k8s.io/json v0.0.0-20250730193827-2d320260d730 h1:IpInykpT6ceI+QxKBbEflcR5EXP7sU1kvOlxwZh5txg=
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-sigs.k8s.io/randfill v1.0.0 h1:JfjMILfT8A6RbawdsK2JXGBR5AQVfd+9TbzrlneTyrU=
-sigs.k8s.io/randfill v1.0.0/go.mod h1:XeLlZ/jmk4i1HRopwe7/aU3H5n1zNUcX6TM94b3QxOY=
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+google.golang.org/protobuf v1.34.2/go.mod h1:qYOHts0dSfpeUzUFpOMr/WGzszTmLH+DiWniOlNbLDw=

grain-pool.go

@@ -1,43 +1,22 @@
 package main
 
 import (
-	"encoding/json"
 	"fmt"
 	"log"
-	"sync"
 	"time"
-
-	"github.com/prometheus/client_golang/prometheus"
-	"github.com/prometheus/client_golang/prometheus/promauto"
-)
-
-var (
-	poolGrains = promauto.NewGauge(prometheus.GaugeOpts{
-		Name: "cart_grains_in_pool",
-		Help: "The total number of grains in the pool",
-	})
-	poolSize = promauto.NewGauge(prometheus.GaugeOpts{
-		Name: "cart_pool_size",
-		Help: "The total number of mutations",
-	})
-	poolUsage = promauto.NewGauge(prometheus.GaugeOpts{
-		Name: "cart_grain_pool_usage",
-		Help: "The current usage of the grain pool",
-	})
 )
 
 type GrainPool interface {
-	Process(id CartId, messages ...Message) (*FrameWithPayload, error)
-	Get(id CartId) (*FrameWithPayload, error)
+	Process(id CartId, messages ...Message) (interface{}, error)
+	Get(id CartId) (Grain, error)
 }
 
 type Ttl struct {
 	Expires time.Time
-	Grain   *CartGrain
+	Item    *CartGrain
 }
 
 type GrainLocalPool struct {
-	mu       sync.RWMutex
 	grains   map[CartId]*CartGrain
 	expiry   []Ttl
 	spawn    func(id CartId) (*CartGrain, error)
@@ -46,7 +25,6 @@ type GrainLocalPool struct {
 }
 
 func NewGrainLocalPool(size int, ttl time.Duration, spawn func(id CartId) (*CartGrain, error)) *GrainLocalPool {
-
 	ret := &GrainLocalPool{
 		spawn:    spawn,
 		grains:   make(map[CartId]*CartGrain),
@@ -54,7 +32,6 @@ func NewGrainLocalPool(size int, ttl time.Duration, spawn func(id CartId) (*Cart
 		Ttl:      ttl,
 		PoolSize: size,
 	}
-
 	cartPurge := time.NewTicker(time.Minute)
 	go func() {
 		<-cartPurge.C
@@ -63,45 +40,20 @@ func NewGrainLocalPool(size int, ttl time.Duration, spawn func(id CartId) (*Cart
 	return ret
 }
 
-func (p *GrainLocalPool) SetAvailable(availableWithLastChangeUnix map[CartId]int64) {
-	p.mu.Lock()
-	defer p.mu.Unlock()
-	for id := range availableWithLastChangeUnix {
-		if _, ok := p.grains[id]; !ok {
-			p.grains[id] = nil
-			p.expiry = append(p.expiry, Ttl{
-				Expires: time.Now().Add(p.Ttl),
-				Grain:   nil,
-			})
-		}
-	}
-}
-
 func (p *GrainLocalPool) Purge() {
 	lastChangeTime := time.Now().Add(-p.Ttl)
 	keepChanged := lastChangeTime.Unix()
-	p.mu.Lock()
-	defer p.mu.Unlock()
 	for i := 0; i < len(p.expiry); i++ {
 		item := p.expiry[i]
 		if item.Expires.Before(time.Now()) {
-			if item.Grain.GetLastChange() > keepChanged {
-				log.Printf("Expired item %s changed, keeping", item.Grain.GetId())
-				if i < len(p.expiry)-1 {
-					p.expiry = append(p.expiry[:i], p.expiry[i+1:]...)
-					p.expiry = append(p.expiry, item)
-				} else {
-					p.expiry = append(p.expiry[:i], item)
-				}
-
+			if item.Item.GetLastChange() > keepChanged {
+				log.Printf("Changed item %s expired, keeping", item.Item.GetId())
+				p.expiry = append(p.expiry[:i], p.expiry[i+1:]...)
+				p.expiry = append(p.expiry, item)
 			} else {
-				log.Printf("Item %s expired", item.Grain.GetId())
-				delete(p.grains, item.Grain.GetId())
-				if i < len(p.expiry)-1 {
-					p.expiry = append(p.expiry[:i], p.expiry[i+1:]...)
-				} else {
-					p.expiry = p.expiry[:i]
-				}
+				log.Printf("Item %s expired", item.Item.GetId())
+				delete(p.grains, item.Item.GetId())
+				p.expiry = append(p.expiry[:i], p.expiry[i+1:]...)
 			}
 		} else {
 			break
@@ -115,54 +67,33 @@ func (p *GrainLocalPool) GetGrains() map[CartId]*CartGrain {
 
 func (p *GrainLocalPool) GetGrain(id CartId) (*CartGrain, error) {
 	var err error
-	// p.mu.RLock()
-	// defer p.mu.RUnlock()
 	grain, ok := p.grains[id]
-	grainLookups.Inc()
-	if grain == nil || !ok {
+	if !ok {
 		if len(p.grains) >= p.PoolSize {
 			if p.expiry[0].Expires.Before(time.Now()) {
-				delete(p.grains, p.expiry[0].Grain.GetId())
+				delete(p.grains, p.expiry[0].Item.GetId())
 				p.expiry = p.expiry[1:]
 			} else {
 				return nil, fmt.Errorf("pool is full")
 			}
 		}
 		grain, err = p.spawn(id)
-		p.mu.Lock()
+
 		p.grains[id] = grain
-		p.mu.Unlock()
 	}
-	go func() {
-		l := float64(len(p.grains))
-		ps := float64(p.PoolSize)
-		poolUsage.Set(l / ps)
-		poolGrains.Set(l)
-		poolSize.Set(ps)
-	}()
 	return grain, err
 }
 
-func (p *GrainLocalPool) Process(id CartId, messages ...Message) (*FrameWithPayload, error) {
+func (p *GrainLocalPool) Process(id CartId, messages ...Message) (interface{}, error) {
 	grain, err := p.GetGrain(id)
-	var result *FrameWithPayload
 	if err == nil && grain != nil {
 		for _, message := range messages {
-			result, err = grain.HandleMessage(&message, false)
+			_, err = grain.HandleMessage(&message, false)
 		}
 	}
-	return result, err
+	return grain, err
 }
 
-func (p *GrainLocalPool) Get(id CartId) (*FrameWithPayload, error) {
-	grain, err := p.GetGrain(id)
-	if err != nil {
-		return nil, err
-	}
-	data, err := json.Marshal(grain)
-	if err != nil {
-		return nil, err
-	}
-	ret := MakeFrameWithPayload(0, 200, data)
-	return &ret, nil
+func (p *GrainLocalPool) Get(id CartId) (Grain, error) {
+	return p.GetGrain(id)
 }

grain-server.go

@@ -0,0 +1,23 @@
+package main
+
+import (
+	"fmt"
+	"net"
+	"net/rpc"
+)
+
+type GrainServer struct {
+	Host string
+}
+
+func NewServer(hostname string) *GrainServer {
+	return &GrainServer{
+		Host: hostname,
+	}
+}
+
+func (s *GrainServer) Start(port int, instance Grain) (net.Listener, error) {
+	rpc.Register(instance)
+	rpc.HandleHTTP()
+	return net.Listen("tcp", fmt.Sprintf(":%d", port))
+}

grpc_integration_test.go

@@ -1,135 +0,0 @@
-package main
-
-import (
-	"bytes"
-	"context"
-	"encoding/json"
-	"fmt"
-	"testing"
-	"time"
-
-	messages "git.tornberg.me/go-cart-actor/proto"
-	"google.golang.org/grpc"
-)
-
-// TestCartActorMutationAndState validates end-to-end gRPC mutation + state retrieval
-// against a locally started gRPC server (single-node scenario).
-// This test uses AddItemType directly to avoid hitting external product
-// fetching logic (FetchItem) which would require network I/O.
-func TestCartActorMutationAndState(t *testing.T) {
-	// Setup local grain pool + synced pool (no discovery, single host)
-	pool := NewGrainLocalPool(1024, time.Minute, spawn)
-	synced, err := NewSyncedPool(pool, "127.0.0.1", nil)
-	if err != nil {
-		t.Fatalf("NewSyncedPool error: %v", err)
-	}
-
-	// Start gRPC server (CartActor + ControlPlane) on :1337
-	grpcSrv, err := StartGRPCServer(":1337", pool, synced)
-	if err != nil {
-		t.Fatalf("StartGRPCServer error: %v", err)
-	}
-	defer grpcSrv.GracefulStop()
-
-	// Dial the local server
-	ctx, cancel := context.WithTimeout(context.Background(), 3*time.Second)
-	defer cancel()
-	conn, err := grpc.DialContext(ctx, "127.0.0.1:1337",
-		grpc.WithInsecure(),
-		grpc.WithBlock(),
-	)
-	if err != nil {
-		t.Fatalf("grpc.Dial error: %v", err)
-	}
-	defer conn.Close()
-
-	cartClient := messages.NewCartActorClient(conn)
-
-	// Create a short cart id (<=16 chars so it fits into the fixed CartId 16-byte array cleanly)
-	cartID := fmt.Sprintf("cart-%d", time.Now().UnixNano())
-
-	// Build an AddItem payload (bypasses FetchItem to keep test deterministic)
-	addItem := &messages.AddItem{
-		ItemId:   1,
-		Quantity: 1,
-		Price:    1000,
-		OrgPrice: 1000,
-		Sku:      "test-sku",
-		Name:     "Test SKU",
-		Image:    "/img.png",
-		Stock:    2, // InStock
-		Tax:      2500,
-		Country:  "se",
-	}
-
-	// Marshal underlying mutation payload using the existing handler code path
-	handler, ok := Handlers[AddItemType]
-	if !ok {
-		t.Fatalf("Handler for AddItemType missing")
-	}
-	payloadData, err := getSerializedPayload(handler, AddItemType, addItem)
-	if err != nil {
-		t.Fatalf("serialize add item: %v", err)
-	}
-
-	// Issue Mutate RPC
-	mutResp, err := cartClient.Mutate(context.Background(), &messages.MutationRequest{
-		CartId:          cartID,
-		Type:            messages.MutationType(AddItemType),
-		Payload:         payloadData,
-		ClientTimestamp: time.Now().Unix(),
-	})
-	if err != nil {
-		t.Fatalf("Mutate RPC error: %v", err)
-	}
-	if mutResp.StatusCode != 200 {
-		t.Fatalf("Mutate returned non-200 status: %d payload=%s", mutResp.StatusCode, string(mutResp.Payload))
-	}
-
-	// Decode cart state JSON and validate
-	state := &CartGrain{}
-	if err := json.Unmarshal(mutResp.Payload, state); err != nil {
-		t.Fatalf("Unmarshal mutate cart state: %v\nPayload: %s", err, string(mutResp.Payload))
-	}
-	if len(state.Items) != 1 {
-		t.Fatalf("Expected 1 item after mutation, got %d", len(state.Items))
-	}
-	if state.Items[0].Sku != "test-sku" {
-		t.Fatalf("Unexpected item SKU: %s", state.Items[0].Sku)
-	}
-
-	// Issue GetState RPC
-	getResp, err := cartClient.GetState(context.Background(), &messages.StateRequest{
-		CartId: cartID,
-	})
-	if err != nil {
-		t.Fatalf("GetState RPC error: %v", err)
-	}
-	if getResp.StatusCode != 200 {
-		t.Fatalf("GetState returned non-200 status: %d payload=%s", getResp.StatusCode, string(getResp.Payload))
-	}
-
-	state2 := &CartGrain{}
-	if err := json.Unmarshal(getResp.Payload, state2); err != nil {
-		t.Fatalf("Unmarshal get state: %v", err)
-	}
-	if len(state2.Items) != 1 {
-		t.Fatalf("Expected 1 item in GetState, got %d", len(state2.Items))
-	}
-	if state2.Items[0].Sku != "test-sku" {
-		t.Fatalf("Unexpected SKU in GetState: %s", state2.Items[0].Sku)
-	}
-}
-
-// getSerializedPayload serializes a mutation proto using the registered handler.
-func getSerializedPayload(handler MessageHandler, msgType uint16, content interface{}) ([]byte, error) {
-	msg := &Message{
-		Type:    msgType,
-		Content: content,
-	}
-	var buf bytes.Buffer
-	if err := handler.Write(msg, &buf); err != nil {
-		return nil, err
-	}
-	return buf.Bytes(), nil
-}

grpc_server.go

@@ -1,379 +0,0 @@
-package main
-
-import (
-	"context"
-	"errors"
-	"fmt"
-	"log"
-	"net"
-	"time"
-
-	proto "git.tornberg.me/go-cart-actor/proto" // underlying generated package name is 'messages'
-	"github.com/prometheus/client_golang/prometheus"
-	"github.com/prometheus/client_golang/prometheus/promauto"
-	"google.golang.org/grpc"
-	"google.golang.org/grpc/codes"
-	"google.golang.org/grpc/status"
-)
-
-// -----------------------------------------------------------------------------
-// Metrics
-// -----------------------------------------------------------------------------
-
-var (
-	grpcMutateDuration = promauto.NewHistogram(prometheus.HistogramOpts{
-		Name:    "cart_grpc_mutate_duration_seconds",
-		Help:    "Duration of CartActor.Mutate RPCs",
-		Buckets: prometheus.DefBuckets,
-	})
-	grpcMutateErrors = promauto.NewCounter(prometheus.CounterOpts{
-		Name: "cart_grpc_mutate_errors_total",
-		Help: "Total number of failed CartActor.Mutate RPCs",
-	})
-	grpcStateDuration = promauto.NewHistogram(prometheus.HistogramOpts{
-		Name:    "cart_grpc_get_state_duration_seconds",
-		Help:    "Duration of CartActor.GetState RPCs",
-		Buckets: prometheus.DefBuckets,
-	})
-	grpcControlDuration = promauto.NewHistogram(prometheus.HistogramOpts{
-		Name:    "cart_grpc_control_duration_seconds",
-		Help:    "Duration of ControlPlane RPCs",
-		Buckets: prometheus.DefBuckets,
-	})
-	grpcControlErrors = promauto.NewCounter(prometheus.CounterOpts{
-		Name: "cart_grpc_control_errors_total",
-		Help: "Total number of failed ControlPlane RPCs",
-	})
-)
-
-// timeTrack wraps a closure and records duration into the supplied histogram.
-func timeTrack(hist prometheus.Observer, fn func() error) (err error) {
-	start := time.Now()
-	defer func() {
-		hist.Observe(time.Since(start).Seconds())
-	}()
-	return fn()
-}
-
-// -----------------------------------------------------------------------------
-// CartActor Service Implementation
-// -----------------------------------------------------------------------------
-
-type cartActorService struct {
-	proto.UnimplementedCartActorServer
-	pool GrainPool
-}
-
-func newCartActorService(pool GrainPool) *cartActorService {
-	return &cartActorService{pool: pool}
-}
-
-func (s *cartActorService) Mutate(ctx context.Context, req *proto.MutationRequest) (*proto.MutationReply, error) {
-	var reply *proto.MutationReply
-	err := timeTrack(grpcMutateDuration, func() error {
-		if req == nil {
-			return status.Error(codes.InvalidArgument, "request is nil")
-		}
-		if req.CartId == "" {
-			return status.Error(codes.InvalidArgument, "cart_id is empty")
-		}
-		mt := uint16(req.Type.Number())
-		handler, ok := Handlers[mt]
-		if !ok {
-			return status.Errorf(codes.InvalidArgument, "unknown mutation type %d", mt)
-		}
-		content, err := handler.Read(req.Payload)
-		if err != nil {
-			return status.Errorf(codes.InvalidArgument, "decode payload: %v", err)
-		}
-
-		ts := req.ClientTimestamp
-		if ts == 0 {
-			ts = time.Now().Unix()
-		}
-		msg := Message{
-			Type:      mt,
-			TimeStamp: &ts,
-			Content:   content,
-		}
-
-		frame, err := s.pool.Process(ToCartId(req.CartId), msg)
-		if err != nil {
-			return err
-		}
-		reply = &proto.MutationReply{
-			StatusCode: int32(frame.StatusCode),
-			Payload:    frame.Payload,
-		}
-		return nil
-	})
-	if err != nil {
-		grpcMutateErrors.Inc()
-		return nil, err
-	}
-	return reply, nil
-}
-
-func (s *cartActorService) GetState(ctx context.Context, req *proto.StateRequest) (*proto.StateReply, error) {
-	var reply *proto.StateReply
-	err := timeTrack(grpcStateDuration, func() error {
-		if req == nil || req.CartId == "" {
-			return status.Error(codes.InvalidArgument, "cart_id is empty")
-		}
-		frame, err := s.pool.Get(ToCartId(req.CartId))
-		if err != nil {
-			return err
-		}
-		reply = &proto.StateReply{
-			StatusCode: int32(frame.StatusCode),
-			Payload:    frame.Payload,
-		}
-		return nil
-	})
-	if err != nil {
-		return nil, err
-	}
-	return reply, nil
-}
-
-// -----------------------------------------------------------------------------
-// ControlPlane Service Implementation
-// -----------------------------------------------------------------------------
-
-// controlPlaneService directly leverages SyncedPool internals (same package).
-// NOTE: This is a transitional adapter; once the legacy frame-based code is
-// removed, related fields/methods in SyncedPool can be slimmed.
-type controlPlaneService struct {
-	proto.UnimplementedControlPlaneServer
-	pool *SyncedPool
-}
-
-func newControlPlaneService(pool *SyncedPool) *controlPlaneService {
-	return &controlPlaneService{pool: pool}
-}
-
-func (s *controlPlaneService) Ping(ctx context.Context, _ *proto.Empty) (*proto.PingReply, error) {
-	var reply *proto.PingReply
-	err := timeTrack(grpcControlDuration, func() error {
-		reply = &proto.PingReply{
-			Host:     s.pool.Hostname,
-			UnixTime: time.Now().Unix(),
-		}
-		return nil
-	})
-	if err != nil {
-		grpcControlErrors.Inc()
-		return nil, err
-	}
-	return reply, nil
-}
-
-func (s *controlPlaneService) Negotiate(ctx context.Context, req *proto.NegotiateRequest) (*proto.NegotiateReply, error) {
-	var reply *proto.NegotiateReply
-	err := timeTrack(grpcControlDuration, func() error {
-		if req == nil {
-			return status.Error(codes.InvalidArgument, "request is nil")
-		}
-		// Add unknown hosts
-		for _, host := range req.KnownHosts {
-			if host == "" || host == s.pool.Hostname {
-				continue
-			}
-			if !s.pool.IsKnown(host) {
-				go s.pool.AddRemote(host)
-			}
-		}
-		// Build healthy host list
-		hosts := make([]string, 0)
-		for _, r := range s.pool.GetHealthyRemotes() {
-			hosts = append(hosts, r.Host)
-		}
-		hosts = append(hosts, s.pool.Hostname)
-		reply = &proto.NegotiateReply{
-			Hosts: hosts,
-		}
-		return nil
-	})
-	if err != nil {
-		grpcControlErrors.Inc()
-		return nil, err
-	}
-	return reply, nil
-}
-
-func (s *controlPlaneService) GetCartIds(ctx context.Context, _ *proto.Empty) (*proto.CartIdsReply, error) {
-	var reply *proto.CartIdsReply
-	err := timeTrack(grpcControlDuration, func() error {
-		s.pool.mu.RLock()
-		defer s.pool.mu.RUnlock()
-		ids := make([]string, 0, len(s.pool.local.grains))
-		for id, g := range s.pool.local.grains {
-			if g == nil {
-				continue
-			}
-			if id.String() == "" {
-				continue
-			}
-			ids = append(ids, id.String())
-		}
-		reply = &proto.CartIdsReply{
-			CartIds: ids,
-		}
-		return nil
-	})
-	if err != nil {
-		grpcControlErrors.Inc()
-		return nil, err
-	}
-	return reply, nil
-}
-
-func (s *controlPlaneService) ConfirmOwner(ctx context.Context, req *proto.OwnerChangeRequest) (*proto.OwnerChangeAck, error) {
-	var reply *proto.OwnerChangeAck
-	err := timeTrack(grpcControlDuration, func() error {
-		if req == nil || req.CartId == "" || req.NewHost == "" {
-			return status.Error(codes.InvalidArgument, "cart_id or new_host missing")
-		}
-		id := ToCartId(req.CartId)
-		newHost := req.NewHost
-
-		// Mirror GrainOwnerChangeHandler semantics
-		log.Printf("gRPC ConfirmOwner: cart %s newHost=%s", id, newHost)
-		for _, r := range s.pool.remoteHosts {
-			if r.Host == newHost && r.IsHealthy() {
-				go s.pool.SpawnRemoteGrain(id, newHost)
-				break
-			}
-		}
-		go s.pool.AddRemote(newHost)
-
-		reply = &proto.OwnerChangeAck{
-			Accepted: true,
-			Message:  "ok",
-		}
-		return nil
-	})
-	if err != nil {
-		grpcControlErrors.Inc()
-		return nil, err
-	}
-	return reply, nil
-}
-
-func (s *controlPlaneService) Closing(ctx context.Context, notice *proto.ClosingNotice) (*proto.OwnerChangeAck, error) {
-	var reply *proto.OwnerChangeAck
-	err := timeTrack(grpcControlDuration, func() error {
-		if notice == nil || notice.Host == "" {
-			return status.Error(codes.InvalidArgument, "host missing")
-		}
-		host := notice.Host
-		s.pool.mu.RLock()
-		_, exists := s.pool.remoteHosts[host]
-		s.pool.mu.RUnlock()
-		if exists {
-			go s.pool.RemoveHost(host)
-		}
-		reply = &proto.OwnerChangeAck{
-			Accepted: true,
-			Message:  "removed",
-		}
-		return nil
-	})
-	if err != nil {
-		grpcControlErrors.Inc()
-		return nil, err
-	}
-	return reply, nil
-}
-
-// -----------------------------------------------------------------------------
-// Server Bootstrap
-// -----------------------------------------------------------------------------
-
-type GRPCServer struct {
-	server *grpc.Server
-	lis    net.Listener
-	addr   string
-}
-
-// StartGRPCServer sets up a gRPC server hosting both CartActor and ControlPlane services.
-// addr example: ":1337" (for combined) OR run two servers if you want separate ports.
-// For the migration we can host both on the same listener to reduce open ports.
-func StartGRPCServer(addr string, pool GrainPool, synced *SyncedPool, opts ...grpc.ServerOption) (*GRPCServer, error) {
-	if pool == nil {
-		return nil, errors.New("nil grain pool")
-	}
-	if synced == nil {
-		return nil, errors.New("nil synced pool")
-	}
-
-	lis, err := net.Listen("tcp", addr)
-	if err != nil {
-		return nil, fmt.Errorf("listen %s: %w", addr, err)
-	}
-
-	grpcServer := grpc.NewServer(opts...)
-	proto.RegisterCartActorServer(grpcServer, newCartActorService(pool))
-	proto.RegisterControlPlaneServer(grpcServer, newControlPlaneService(synced))
-
-	go func() {
-		log.Printf("gRPC server listening on %s", addr)
-		if serveErr := grpcServer.Serve(lis); serveErr != nil {
-			log.Printf("gRPC server stopped: %v", serveErr)
-		}
-	}()
-
-	return &GRPCServer{
-		server: grpcServer,
-		lis:    lis,
-		addr:   addr,
-	}, nil
-}
-
-// GracefulStop stops the server gracefully.
-func (s *GRPCServer) GracefulStop() {
-	if s == nil || s.server == nil {
-		return
-	}
-	s.server.GracefulStop()
-}
-
-// Addr returns the bound address.
-func (s *GRPCServer) Addr() string {
-	if s == nil {
-		return ""
-	}
-	return s.addr
-}
-
-// -----------------------------------------------------------------------------
-// Client Dial Helpers (used later by refactored remote grain + control plane)
-// -----------------------------------------------------------------------------
-
-// DialRemote establishes (or reuses externally) a gRPC client connection.
-func DialRemote(ctx context.Context, target string, opts ...grpc.DialOption) (*grpc.ClientConn, error) {
-	dialOpts := []grpc.DialOption{
-		grpc.WithInsecure(), // NOTE: Intentional for initial migration; replace with TLS / mTLS later.
-		grpc.WithBlock(),
-	}
-	dialOpts = append(dialOpts, opts...)
-	ctxDial, cancel := context.WithTimeout(ctx, 5*time.Second)
-	defer cancel()
-	conn, err := grpc.DialContext(ctxDial, target, dialOpts...)
-	if err != nil {
-		return nil, err
-	}
-	return conn, nil
-}
-
-// -----------------------------------------------------------------------------
-// Utility for converting internal errors to gRPC status (if needed later).
-// -----------------------------------------------------------------------------
-
-func grpcError(err error) error {
-	if err == nil {
-		return nil
-	}
-	// Extend mapping if we add richer error types.
-	return status.Error(codes.Internal, err.Error())
-}

klarna-client.go

@@ -1,128 +0,0 @@
-package main
-
-import (
-	"encoding/json"
-	"fmt"
-	"io"
-	"log"
-	"net/http"
-
-	"github.com/google/uuid"
-)
-
-type KlarnaClient struct {
-	Url      string
-	UserName string
-	Password string
-	client   *http.Client
-}
-
-func NewKlarnaClient(url, userName, password string) *KlarnaClient {
-	return &KlarnaClient{
-		Url:      url,
-		UserName: userName,
-		Password: password,
-		client:   &http.Client{},
-	}
-}
-
-const (
-	KlarnaPlaygroundUrl = "https://api.playground.klarna.com"
-)
-
-func (k *KlarnaClient) GetOrder(orderId string) (*CheckoutOrder, error) {
-	req, err := http.NewRequest("GET", k.Url+"/checkout/v3/orders/"+orderId, nil)
-	if err != nil {
-		return nil, err
-	}
-	req.Header.Add("Content-Type", "application/json")
-	req.SetBasicAuth(k.UserName, k.Password)
-
-	res, err := k.client.Do(req)
-	if err != nil {
-		return nil, err
-	}
-	defer res.Body.Close()
-	return k.getOrderResponse(res)
-}
-
-func (k *KlarnaClient) getOrderResponse(res *http.Response) (*CheckoutOrder, error) {
-	var err error
-	var klarnaOrderResponse CheckoutOrder
-	if res.StatusCode >= 200 && res.StatusCode <= 299 {
-		err = json.NewDecoder(res.Body).Decode(&klarnaOrderResponse)
-		if err != nil {
-			return nil, err
-		}
-		return &klarnaOrderResponse, nil
-	}
-	body, err := io.ReadAll(res.Body)
-	if err == nil {
-		log.Println(string(body))
-	}
-
-	return nil, fmt.Errorf("%s", res.Status)
-}
-
-func (k *KlarnaClient) CreateOrder(reader io.Reader) (*CheckoutOrder, error) {
-	//bytes.NewReader(reply.Payload)
-	req, err := http.NewRequest("POST", k.Url+"/checkout/v3/orders", reader)
-	if err != nil {
-		return nil, err
-	}
-
-	req.Header.Add("Content-Type", "application/json")
-	req.SetBasicAuth(k.UserName, k.Password)
-
-	res, err := http.DefaultClient.Do(req)
-	if nil != err {
-		return nil, err
-	}
-	defer res.Body.Close()
-	return k.getOrderResponse(res)
-}
-
-func (k *KlarnaClient) UpdateOrder(orderId string, reader io.Reader) (*CheckoutOrder, error) {
-	//bytes.NewReader(reply.Payload)
-	req, err := http.NewRequest("POST", fmt.Sprintf("%s/checkout/v3/orders/%s", k.Url, orderId), reader)
-	if err != nil {
-		return nil, err
-	}
-
-	req.Header.Add("Content-Type", "application/json")
-	req.SetBasicAuth(k.UserName, k.Password)
-
-	res, err := http.DefaultClient.Do(req)
-	if nil != err {
-		return nil, err
-	}
-	defer res.Body.Close()
-	return k.getOrderResponse(res)
-}
-
-func (k *KlarnaClient) AbortOrder(orderId string) error {
-	req, err := http.NewRequest("POST", fmt.Sprintf("%s/checkout/v3/orders/%s/abort", k.Url, orderId), nil)
-	if err != nil {
-		return err
-	}
-
-	req.SetBasicAuth(k.UserName, k.Password)
-
-	_, err = http.DefaultClient.Do(req)
-	return err
-}
-
-// ordermanagement/v1/orders/{order_id}/acknowledge
-func (k *KlarnaClient) AcknowledgeOrder(orderId string) error {
-	req, err := http.NewRequest("POST", fmt.Sprintf("%s/ordermanagement/v1/orders/%s/acknowledge", k.Url, orderId), nil)
-	if err != nil {
-		return err
-	}
-	id := uuid.New()
-
-	req.SetBasicAuth(k.UserName, k.Password)
-	req.Header.Add("Klarna-Idempotency-Key", id.String())
-
-	_, err = http.DefaultClient.Do(req)
-	return err
-}

klarna-types.go

@@ -1,169 +0,0 @@
-package main
-
-type (
-	LineType string
-
-	// CheckoutOrder type is the request structure to create a new order from the Checkout API
-	CheckoutOrder struct {
-		ID                     string                `json:"order_id,omitempty"`
-		PurchaseCountry        string                `json:"purchase_country"`
-		PurchaseCurrency       string                `json:"purchase_currency"`
-		Locale                 string                `json:"locale"`
-		Status                 string                `json:"status,omitempty"`
-		BillingAddress         *Address              `json:"billing_address,omitempty"`
-		ShippingAddress        *Address              `json:"shipping_address,omitempty"`
-		OrderAmount            int                   `json:"order_amount"`
-		OrderTaxAmount         int                   `json:"order_tax_amount"`
-		OrderLines             []*Line               `json:"order_lines"`
-		Customer               *CheckoutCustomer     `json:"customer,omitempty"`
-		MerchantURLS           *CheckoutMerchantURLS `json:"merchant_urls"`
-		HTMLSnippet            string                `json:"html_snippet,omitempty"`
-		MerchantReference1     string                `json:"merchant_reference1,omitempty"`
-		MerchantReference2     string                `json:"merchant_reference2,omitempty"`
-		StartedAt              string                `json:"started_at,omitempty"`
-		CompletedAt            string                `json:"completed_at,omitempty"`
-		LastModifiedAt         string                `json:"last_modified_at,omitempty"`
-		Options                *CheckoutOptions      `json:"options,omitempty"`
-		Attachment             *Attachment           `json:"attachment,omitempty"`
-		ExternalPaymentMethods []*PaymentProvider    `json:"external_payment_methods,omitempty"`
-		ExternalCheckouts      []*PaymentProvider    `json:"external_checkouts,omitempty"`
-		ShippingCountries      []string              `json:"shipping_countries,omitempty"`
-		ShippingOptions        []*ShippingOption     `json:"shipping_options,omitempty"`
-		MerchantData           string                `json:"merchant_data,omitempty"`
-		GUI                    *GUI                  `json:"gui,omitempty"`
-		MerchantRequested      *AdditionalCheckBox   `json:"merchant_requested,omitempty"`
-		SelectedShippingOption *ShippingOption       `json:"selected_shipping_option,omitempty"`
-		ErrorCode              string                `json:"error_code,omitempty"`
-		ErrorMessages          []string              `json:"error_messages,omitempty"`
-	}
-
-	// GUI type wraps the GUI options
-	GUI struct {
-		Options []string `json:"options,omitempty"`
-	}
-
-	// ShippingOption type is part of the CheckoutOrder structure, represent the shipping options field
-	ShippingOption struct {
-		ID             string `json:"id"`
-		Name           string `json:"name"`
-		Description    string `json:"description,omitempty"`
-		Promo          string `json:"promo,omitempty"`
-		Price          int    `json:"price"`
-		TaxAmount      int    `json:"tax_amount"`
-		TaxRate        int    `json:"tax_rate"`
-		Preselected    bool   `json:"preselected,omitempty"`
-		ShippingMethod string `json:"shipping_method,omitempty"`
-	}
-
-	// PaymentProvider type is part of the CheckoutOrder structure, represent the ExternalPaymentMethods and
-	// ExternalCheckouts field
-	PaymentProvider struct {
-		Name        string   `json:"name"`
-		RedirectURL string   `json:"redirect_url"`
-		ImageURL    string   `json:"image_url,omitempty"`
-		Fee         int      `json:"fee,omitempty"`
-		Description string   `json:"description,omitempty"`
-		Countries   []string `json:"countries,omitempty"`
-	}
-
-	Attachment struct {
-		ContentType string `json:"content_type"`
-		Body        string `json:"body"`
-	}
-
-	CheckoutOptions struct {
-		AcquiringChannel               string              `json:"acquiring_channel,omitempty"`
-		AllowSeparateShippingAddress   bool                `json:"allow_separate_shipping_address,omitempty"`
-		ColorButton                    string              `json:"color_button,omitempty"`
-		ColorButtonText                string              `json:"color_button_text,omitempty"`
-		ColorCheckbox                  string              `json:"color_checkbox,omitempty"`
-		ColorCheckboxCheckmark         string              `json:"color_checkbox_checkmark,omitempty"`
-		ColorHeader                    string              `json:"color_header,omitempty"`
-		ColorLink                      string              `json:"color_link,omitempty"`
-		DateOfBirthMandatory           bool                `json:"date_of_birth_mandatory,omitempty"`
-		ShippingDetails                string              `json:"shipping_details,omitempty"`
-		TitleMandatory                 bool                `json:"title_mandatory,omitempty"`
-		AdditionalCheckbox             *AdditionalCheckBox `json:"additional_checkbox"`
-		RadiusBorder                   string              `json:"radius_border,omitempty"`
-		ShowSubtotalDetail             bool                `json:"show_subtotal_detail,omitempty"`
-		RequireValidateCallbackSuccess bool                `json:"require_validate_callback_success,omitempty"`
-		AllowGlobalBillingCountries    bool                `json:"allow_global_billing_countries,omitempty"`
-	}
-
-	AdditionalCheckBox struct {
-		Text     string `json:"text"`
-		Checked  bool   `json:"checked"`
-		Required bool   `json:"required"`
-	}
-
-	CheckoutMerchantURLS struct {
-		// URL of merchant terms and conditions. Should be different than checkout, confirmation and push URLs.
-		// (max 2000 characters)
-		Terms string `json:"terms"`
-
-		// URL of merchant checkout page. Should be different than terms, confirmation and push URLs.
-		// (max 2000 characters)
-		Checkout string `json:"checkout"`
-
-		// URL of merchant confirmation page. Should be different than checkout and confirmation URLs.
-		// (max 2000 characters)
-		Confirmation string `json:"confirmation"`
-
-		// URL that will be requested when an order is completed. Should be different than checkout and
-		// confirmation URLs. (max 2000 characters)
-		Push string `json:"push"`
-		// URL that will be requested for final merchant validation. (must be https, max 2000 characters)
-		Validation string `json:"validation,omitempty"`
-
-		// URL for shipping option update. (must be https, max 2000 characters)
-		ShippingOptionUpdate string `json:"shipping_option_update,omitempty"`
-
-		// URL for shipping, tax and purchase currency updates. Will be called on address changes.
-		// (must be https, max 2000 characters)
-		AddressUpdate string `json:"address_update,omitempty"`
-
-		// URL for notifications on pending orders. (max 2000 characters)
-		Notification string `json:"notification,omitempty"`
-
-		// URL for shipping, tax and purchase currency updates. Will be called on purchase country changes.
-		// (must be https, max 2000 characters)
-		CountryChange string `json:"country_change,omitempty"`
-	}
-
-	CheckoutCustomer struct {
-		// DateOfBirth in string representation 2006-01-02
-		DateOfBirth string `json:"date_of_birth"`
-	}
-
-	// Address type define the address object (json serializable) being used for the API to represent billing &
-	// shipping addresses
-	Address struct {
-		GivenName      string `json:"given_name,omitempty"`
-		FamilyName     string `json:"family_name,omitempty"`
-		Email          string `json:"email,omitempty"`
-		Title          string `json:"title,omitempty"`
-		StreetAddress  string `json:"street_address,omitempty"`
-		StreetAddress2 string `json:"street_address2,omitempty"`
-		PostalCode     string `json:"postal_code,omitempty"`
-		City           string `json:"city,omitempty"`
-		Region         string `json:"region,omitempty"`
-		Phone          string `json:"phone,omitempty"`
-		Country        string `json:"country,omitempty"`
-	}
-
-	Line struct {
-		Type                string `json:"type,omitempty"`
-		Reference           string `json:"reference,omitempty"`
-		Name                string `json:"name"`
-		Quantity            int    `json:"quantity"`
-		QuantityUnit        string `json:"quantity_unit,omitempty"`
-		UnitPrice           int    `json:"unit_price"`
-		TaxRate             int    `json:"tax_rate"`
-		TotalAmount         int    `json:"total_amount"`
-		TotalDiscountAmount int    `json:"total_discount_amount,omitempty"`
-		TotalTaxAmount      int    `json:"total_tax_amount"`
-		MerchantData        string `json:"merchant_data,omitempty"`
-		ProductURL          string `json:"product_url,omitempty"`
-		ImageURL            string `json:"image_url,omitempty"`
-	}
-)

main.go

@@ -2,47 +2,18 @@ package main
 
 import (
 	"encoding/json"
-	"fmt"
 	"log"
 	"net/http"
-	"net/http/pprof"
 	"os"
-	"os/signal"
-	"strings"
-	"syscall"
 	"time"
 
 	messages "git.tornberg.me/go-cart-actor/proto"
-	"github.com/prometheus/client_golang/prometheus"
-	"github.com/prometheus/client_golang/prometheus/promauto"
-	"github.com/prometheus/client_golang/prometheus/promhttp"
-	"k8s.io/client-go/kubernetes"
-	"k8s.io/client-go/rest"
-)
-
-var (
-	grainSpawns = promauto.NewCounter(prometheus.CounterOpts{
-		Name: "cart_grain_spawned_total",
-		Help: "The total number of spawned grains",
-	})
-	grainMutations = promauto.NewCounter(prometheus.CounterOpts{
-		Name: "cart_grain_mutations_total",
-		Help: "The total number of mutations",
-	})
-	grainLookups = promauto.NewCounter(prometheus.CounterOpts{
-		Name: "cart_grain_lookups_total",
-		Help: "The total number of lookups",
-	})
 )
 
 func spawn(id CartId) (*CartGrain, error) {
-	grainSpawns.Inc()
 	ret := &CartGrain{
-		lastItemId:      0,
-		lastDeliveryId:  0,
-		Deliveries:      []*CartDelivery{},
 		Id:              id,
-		Items:           []*CartItem{},
+		Items:           []CartItem{},
 		storageMessages: []Message{},
 		TotalPrice:      0,
 	}
@@ -59,25 +30,42 @@ type App struct {
 	storage *DiskStorage
 }
 
-func (a *App) Save() error {
-	hasChanges := false
-	a.pool.mu.RLock()
-	defer a.pool.mu.RUnlock()
-	for id, grain := range a.pool.GetGrains() {
-		if grain == nil {
-			continue
-		}
-		if grain.GetLastChange() > a.storage.LastSaves[id] {
-			hasChanges = true
-			err := a.storage.Store(id, grain)
-			if err != nil {
-				log.Printf("Error saving grain %s: %v\n", id, err)
-			}
-		}
+func (a *App) HandleGet(w http.ResponseWriter, r *http.Request) {
+	id := r.PathValue("id")
+	grain, err := a.pool.Get(ToCartId(id))
+	if err != nil {
+		w.WriteHeader(http.StatusNotFound)
+		return
+	}
+	w.Header().Set("Content-Type", "application/json")
+	w.WriteHeader(http.StatusOK)
+	json.NewEncoder(w).Encode(grain)
+}
+
+func (a *App) HandleAddSku(w http.ResponseWriter, r *http.Request) {
+	id := r.PathValue("id")
+	sku := r.PathValue("sku")
+	grain, err := a.pool.Process(ToCartId(id), Message{
+		Type:    AddRequestType,
+		Content: &messages.AddRequest{Sku: sku},
+	})
+	if err != nil {
+		w.WriteHeader(http.StatusInternalServerError)
+		w.Write([]byte(err.Error()))
+		return
 	}
 
-	if !hasChanges {
-		return nil
+	w.Header().Set("Content-Type", "application/json")
+	w.WriteHeader(http.StatusOK)
+	json.NewEncoder(w).Encode(grain)
+}
+
+func (a *App) Save() error {
+	for id, grain := range a.pool.GetGrains() {
+		err := a.storage.Store(id, grain)
+		if err != nil {
+			log.Printf("Error saving grain %s: %v\n", id, err)
+		}
 	}
 	return a.storage.saveState()
 }
@@ -92,330 +80,58 @@ func (a *App) HandleSave(w http.ResponseWriter, r *http.Request) {
 	}
 }
 
-var podIp = os.Getenv("POD_IP")
-var name = os.Getenv("POD_NAME")
-var amqpUrl = os.Getenv("AMQP_URL")
-var KlarnaInstance = NewKlarnaClient(KlarnaPlaygroundUrl, os.Getenv("KLARNA_API_USERNAME"), os.Getenv("KLARNA_API_PASSWORD"))
-
-func GetDiscovery() Discovery {
-	if podIp == "" {
-		return nil
-	}
-
-	config, kerr := rest.InClusterConfig()
-
-	if kerr != nil {
-		log.Fatalf("Error creating kubernetes client: %v\n", kerr)
-	}
-	client, err := kubernetes.NewForConfig(config)
-	if err != nil {
-		log.Fatalf("Error creating client: %v\n", err)
-	}
-	return NewK8sDiscovery(client)
-}
-
-var tpl = `<!DOCTYPE html>
-<html lang="en">
-  <head>
-    <meta charset="UTF-8" />
-    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
-    <title>s10r testing - checkout</title>
-  </head>
-
-  <body>
-    %s
-  </body>
-</html>
-`
-
-func getCountryFromHost(host string) string {
-	if strings.Contains(strings.ToLower(host), "-no") {
-		return "no"
-	}
-	return "se"
-}
-
-func getCheckoutOrder(host string, cartId CartId) *messages.CreateCheckoutOrder {
-	baseUrl := fmt.Sprintf("https://%s", host)
-	cartBaseUrl := os.Getenv("CART_BASE_URL")
-	if cartBaseUrl == "" {
-		cartBaseUrl = "https://cart.tornberg.me"
-	}
-	country := getCountryFromHost(host)
-
-	return &messages.CreateCheckoutOrder{
-		Terms:        fmt.Sprintf("%s/terms", baseUrl),
-		Checkout:     fmt.Sprintf("%s/checkout?order_id={checkout.order.id}", baseUrl),
-		Confirmation: fmt.Sprintf("%s/confirmation/{checkout.order.id}", baseUrl),
-		Validation:   fmt.Sprintf("%s/validation", cartBaseUrl),
-		Push:         fmt.Sprintf("%s/push?order_id={checkout.order.id}", cartBaseUrl),
-		Country:      country,
-	}
-}
-
 func main() {
-
-	storage, err := NewDiskStorage(fmt.Sprintf("data/%s_state.gob", name))
+	// Create a new instance of the server
+	storage, err := NewDiskStorage("data/state.gob")
 	if err != nil {
 		log.Printf("Error loading state: %v\n", err)
 	}
 	app := &App{
-		pool:    NewGrainLocalPool(65535, 5*time.Minute, spawn),
+		pool:    NewGrainLocalPool(1000, 5*time.Minute, spawn),
 		storage: storage,
 	}
 
-	syncedPool, err := NewSyncedPool(app.pool, podIp, GetDiscovery())
+	rpcHandler, err := NewGrainHandler(app.pool, "localhost:1337")
 	if err != nil {
-		log.Fatalf("Error creating synced pool: %v\n", err)
+		log.Fatalf("Error creating handler: %v\n", err)
 	}
+	go rpcHandler.Serve()
 
-	// Start unified gRPC server (CartActor + ControlPlane) replacing legacy RPC server on :1337
-	// TODO: Remove any remaining legacy RPC server references and deprecated frame-based code after full gRPC migration is validated.
-	grpcSrv, err := StartGRPCServer(":1337", app.pool, syncedPool)
-	if err != nil {
-		log.Fatalf("Error starting gRPC server: %v\n", err)
-	}
-	defer grpcSrv.GracefulStop()
+	remotePool := NewRemoteGrainPool("localhost:1337")
 
-	go func() {
-		for range time.Tick(time.Minute * 10) {
-			err := app.Save()
-			if err != nil {
-				log.Printf("Error saving: %v\n", err)
-			}
-		}
-	}()
-	orderHandler := &AmqpOrderHandler{
-		Url: amqpUrl,
-	}
-
-	syncedServer := NewPoolServer(syncedPool, fmt.Sprintf("%s, %s", name, podIp))
 	mux := http.NewServeMux()
-	mux.Handle("/cart/", http.StripPrefix("/cart", syncedServer.Serve()))
-	// only for local
-	// mux.HandleFunc("GET /add/remote/{host}", func(w http.ResponseWriter, r *http.Request) {
-	// 	syncedPool.AddRemote(r.PathValue("host"))
-	// })
-	// mux.HandleFunc("GET /save", app.HandleSave)
-	//mux.HandleFunc("/", app.RewritePath)
-	mux.HandleFunc("/debug/pprof/", pprof.Index)
-	mux.HandleFunc("/debug/pprof/cmdline", pprof.Cmdline)
-	mux.HandleFunc("/debug/pprof/profile", pprof.Profile)
-	mux.HandleFunc("/debug/pprof/symbol", pprof.Symbol)
-	mux.HandleFunc("/debug/pprof/trace", pprof.Trace)
-	mux.Handle("/metrics", promhttp.Handler())
-	mux.HandleFunc("/healthz", func(w http.ResponseWriter, r *http.Request) {
-		// Grain pool health: simple capacity check (mirrors previous GrainHandler.IsHealthy)
-		app.pool.mu.RLock()
-		grainCount := len(app.pool.grains)
-		capacity := app.pool.PoolSize
-		app.pool.mu.RUnlock()
-		if grainCount >= capacity {
-			w.WriteHeader(http.StatusInternalServerError)
-			w.Write([]byte("grain pool at capacity"))
-			return
-		}
-		if !syncedPool.IsHealthy() {
-			w.WriteHeader(http.StatusInternalServerError)
-			w.Write([]byte("control plane not healthy"))
-			return
-		}
-		w.WriteHeader(http.StatusOK)
-		w.Write([]byte("ok"))
-	})
-	mux.HandleFunc("/readyz", func(w http.ResponseWriter, r *http.Request) {
-		w.WriteHeader(http.StatusOK)
-		w.Write([]byte("ok"))
-	})
-	mux.HandleFunc("/livez", func(w http.ResponseWriter, r *http.Request) {
-		w.WriteHeader(http.StatusOK)
-		w.Write([]byte("ok"))
-	})
-
-	mux.HandleFunc("/checkout", func(w http.ResponseWriter, r *http.Request) {
-		orderId := r.URL.Query().Get("order_id")
-		order := &CheckoutOrder{}
-
-		if orderId == "" {
-			cookie, err := r.Cookie("cartid")
-			if err != nil {
-				w.WriteHeader(http.StatusBadRequest)
-				w.Write([]byte(err.Error()))
-				return
-			}
-			if cookie.Value == "" {
-				w.WriteHeader(http.StatusBadRequest)
-				w.Write([]byte("no cart id to checkout is empty"))
-				return
-			}
-			cartId := ToCartId(cookie.Value)
-			reply, err := syncedServer.pool.Process(cartId, Message{
-				Type:    CreateCheckoutOrderType,
-				Content: getCheckoutOrder(r.Host, cartId),
-			})
-			if err != nil {
-				w.WriteHeader(http.StatusInternalServerError)
-				w.Write([]byte(err.Error()))
-			}
-			err = json.Unmarshal(reply.Payload, &order)
-			if err != nil {
-				w.WriteHeader(http.StatusInternalServerError)
-				w.Write([]byte(err.Error()))
-				return
-			}
-		} else {
-			prevOrder, err := KlarnaInstance.GetOrder(orderId)
-			if err != nil {
-				w.WriteHeader(http.StatusBadRequest)
-				w.Write([]byte(err.Error()))
-				return
-			}
-			order = prevOrder
-		}
-		w.Header().Set("Content-Type", "text/html; charset=utf-8")
-		w.Header().Set("Permissions-Policy", "payment=(self \"https://js.stripe.com\" \"https://m.stripe.network\" \"https://js.playground.kustom.co\")")
-		w.WriteHeader(http.StatusOK)
-		w.Write([]byte(fmt.Sprintf(tpl, order.HTMLSnippet)))
-	})
-	mux.HandleFunc("/confirmation/{order_id}", func(w http.ResponseWriter, r *http.Request) {
-
-		orderId := r.PathValue("order_id")
-		order, err := KlarnaInstance.GetOrder(orderId)
-
+	mux.HandleFunc("GET /api/{id}", app.HandleGet)
+	mux.HandleFunc("GET /api/{id}/add/{sku}", app.HandleAddSku)
+	mux.HandleFunc("GET /remote/{id}/add", func(w http.ResponseWriter, r *http.Request) {
+		id := r.PathValue("id")
+		ts := time.Now().Unix()
+		data, err := remotePool.Process(ToCartId(id), Message{
+			Type:      AddRequestType,
+			TimeStamp: &ts,
+			Content:   &messages.AddRequest{Sku: "49565"},
+		})
 		if err != nil {
 			w.WriteHeader(http.StatusInternalServerError)
 			w.Write([]byte(err.Error()))
 			return
 		}
-
-		w.Header().Set("Content-Type", "text/html; charset=utf-8")
-		if order.Status == "checkout_complete" {
-			http.SetCookie(w, &http.Cookie{
-				Name:     "cartid",
-				Value:    "",
-				Path:     "/",
-				Secure:   true,
-				HttpOnly: true,
-				Expires:  time.Unix(0, 0),
-				SameSite: http.SameSiteLaxMode,
-			})
-		}
-
+		w.Header().Set("Content-Type", "application/json")
 		w.WriteHeader(http.StatusOK)
-		w.Write([]byte(fmt.Sprintf(tpl, order.HTMLSnippet)))
+		w.Write(data)
 	})
-	mux.HandleFunc("/validate", func(w http.ResponseWriter, r *http.Request) {
-		log.Printf("Klarna order validation, method: %s", r.Method)
-		if r.Method != "POST" {
-			w.WriteHeader(http.StatusMethodNotAllowed)
-			return
-		}
-		order := &CheckoutOrder{}
-		err := json.NewDecoder(r.Body).Decode(order)
+	mux.HandleFunc("GET /remote/{id}", func(w http.ResponseWriter, r *http.Request) {
+		id := r.PathValue("id")
+		data, err := remotePool.Get(ToCartId(id))
 		if err != nil {
-			w.WriteHeader(http.StatusBadRequest)
-		}
-		log.Printf("Klarna order validation: %s", order.ID)
-		//err = confirmOrder(order, orderHandler)
-		//if err != nil {
-		//	log.Printf("Error validating order: %v\n", err)
-		//	w.WriteHeader(http.StatusInternalServerError)
-		//	return
-		//}
-		//
-		//err = triggerOrderCompleted(err, syncedServer, order)
-		//if err != nil {
-		//	log.Printf("Error processing cart message: %v\n", err)
-		//	w.WriteHeader(http.StatusInternalServerError)
-		//	return
-		//}
-		w.WriteHeader(http.StatusOK)
-	})
-	mux.HandleFunc("/push", func(w http.ResponseWriter, r *http.Request) {
-
-		if r.Method != http.MethodPost {
-			w.WriteHeader(http.StatusMethodNotAllowed)
-			return
-		}
-		orderId := r.URL.Query().Get("order_id")
-		log.Printf("Order confirmation push: %s", orderId)
-
-		order, err := KlarnaInstance.GetOrder(orderId)
-
-		if err != nil {
-			log.Printf("Error creating request: %v\n", err)
 			w.WriteHeader(http.StatusInternalServerError)
+			w.Write([]byte(err.Error()))
 			return
 		}
-
-		err = confirmOrder(order, orderHandler)
-		if err != nil {
-			log.Printf("Error confirming order: %v\n", err)
-			w.WriteHeader(http.StatusInternalServerError)
-			return
-		}
-
-		err = triggerOrderCompleted(err, syncedServer, order)
-		if err != nil {
-			log.Printf("Error processing cart message: %v\n", err)
-			w.WriteHeader(http.StatusInternalServerError)
-			return
-		}
-		err = KlarnaInstance.AcknowledgeOrder(orderId)
-		if err != nil {
-			log.Printf("Error acknowledging order: %v\n", err)
-		}
-
+		w.Header().Set("Content-Type", "application/json")
 		w.WriteHeader(http.StatusOK)
+		w.Write(data)
 	})
-	mux.HandleFunc("/version", func(w http.ResponseWriter, r *http.Request) {
-		w.WriteHeader(http.StatusOK)
-		w.Write([]byte("1.0.0"))
-	})
-
-	sigs := make(chan os.Signal, 1)
-	done := make(chan bool, 1)
-	signal.Notify(sigs, syscall.SIGTERM)
-
-	go func() {
-		sig := <-sigs
-		fmt.Println("Shutting down due to signal:", sig)
-		go syncedPool.Close()
-		app.Save()
-		done <- true
-	}()
-
-	log.Print("Server started at port 8080")
-	go http.ListenAndServe(":8080", mux)
-	<-done
+	mux.HandleFunc("GET /save", app.HandleSave)
+	http.ListenAndServe(":8080", mux)
 
 }
-
-func triggerOrderCompleted(err error, syncedServer *PoolServer, order *CheckoutOrder) error {
-	_, err = syncedServer.pool.Process(ToCartId(order.MerchantReference1), Message{
-		Type: OrderCompletedType,
-		Content: &messages.OrderCreated{
-			OrderId: order.ID,
-			Status:  order.Status,
-		},
-	})
-	return err
-}
-
-func confirmOrder(order *CheckoutOrder, orderHandler *AmqpOrderHandler) error {
-	orderToSend, err := json.Marshal(order)
-	if err != nil {
-		return err
-	}
-	err = orderHandler.Connect()
-	if err != nil {
-		return err
-	}
-	defer orderHandler.Close()
-	err = orderHandler.OrderCompleted(orderToSend)
-	if err != nil {
-		return err
-	}
-
-	return nil
-}

message-handler.go

@@ -1,315 +0,0 @@
-package main
-
-import (
-	"fmt"
-	"io"
-
-	messages "git.tornberg.me/go-cart-actor/proto"
-	"google.golang.org/protobuf/proto"
-)
-
-var Handlers = map[uint16]MessageHandler{
-	AddRequestType:          &AddRequestHandler{},
-	AddItemType:             &AddItemHandler{},
-	ChangeQuantityType:      &ChangeQuantityHandler{},
-	SetDeliveryType:         &SetDeliveryHandler{},
-	RemoveItemType:          &RemoveItemHandler{},
-	RemoveDeliveryType:      &RemoveDeliveryHandler{},
-	CreateCheckoutOrderType: &CheckoutHandler{},
-	SetCartItemsType:        &SetCartItemsHandler{},
-	OrderCompletedType:      &OrderCompletedHandler{},
-}
-
-func GetMessageHandler(t uint16) (MessageHandler, error) {
-	h, ok := Handlers[t]
-	if !ok {
-		return nil, fmt.Errorf("no handler for message type %d", t)
-	}
-	return h, nil
-}
-
-type MessageHandler interface {
-	Write(*Message, io.Writer) error
-	Read(data []byte) (interface{}, error)
-	Is(*Message) bool
-}
-type TypedMessageHandler struct {
-	Type uint16
-}
-
-type SetCartItemsHandler struct {
-	TypedMessageHandler
-}
-
-func (h *SetCartItemsHandler) Write(m *Message, w io.Writer) error {
-	messageBytes, err := proto.Marshal(m.Content.(*messages.SetCartRequest))
-	if err != nil {
-		return err
-	}
-	w.Write(messageBytes)
-	return nil
-}
-
-func (h *SetCartItemsHandler) Read(data []byte) (interface{}, error) {
-	msg := &messages.SetCartRequest{}
-
-	err := proto.Unmarshal(data, msg)
-	if err != nil {
-		return nil, err
-	}
-	return msg, nil
-}
-
-func (h *SetCartItemsHandler) Is(m *Message) bool {
-	if m.Type != AddRequestType {
-		return false
-	}
-	_, ok := m.Content.(*messages.SetCartRequest)
-	return ok
-}
-
-type AddRequestHandler struct {
-	TypedMessageHandler
-}
-
-func (h *AddRequestHandler) Write(m *Message, w io.Writer) error {
-	messageBytes, err := proto.Marshal(m.Content.(*messages.AddRequest))
-	if err != nil {
-		return err
-	}
-	w.Write(messageBytes)
-	return nil
-}
-
-func (h *AddRequestHandler) Read(data []byte) (interface{}, error) {
-	msg := &messages.AddRequest{}
-
-	err := proto.Unmarshal(data, msg)
-	if err != nil {
-		return nil, err
-	}
-	return msg, nil
-}
-
-func (h *AddRequestHandler) Is(m *Message) bool {
-	if m.Type != AddRequestType {
-		return false
-	}
-	_, ok := m.Content.(*messages.AddRequest)
-	return ok
-}
-
-type AddItemHandler struct {
-	TypedMessageHandler
-}
-
-func (h *AddItemHandler) Write(m *Message, w io.Writer) error {
-	messageBytes, err := proto.Marshal(m.Content.(*messages.AddItem))
-	if err != nil {
-		return err
-	}
-	w.Write(messageBytes)
-	return nil
-}
-
-func (h *AddItemHandler) Read(data []byte) (interface{}, error) {
-	msg := &messages.AddItem{}
-
-	err := proto.Unmarshal(data, msg)
-	if err != nil {
-		return nil, err
-	}
-	return msg, nil
-}
-
-func (h *AddItemHandler) Is(m *Message) bool {
-	if m.Type != AddItemType {
-		return false
-	}
-	_, ok := m.Content.(*messages.AddItem)
-	return ok
-}
-
-type ChangeQuantityHandler struct {
-	TypedMessageHandler
-}
-
-func (h *ChangeQuantityHandler) Write(m *Message, w io.Writer) error {
-	messageBytes, err := proto.Marshal(m.Content.(*messages.ChangeQuantity))
-	if err != nil {
-		return err
-	}
-	w.Write(messageBytes)
-	return nil
-}
-
-func (h *ChangeQuantityHandler) Read(data []byte) (interface{}, error) {
-	msg := &messages.ChangeQuantity{}
-
-	err := proto.Unmarshal(data, msg)
-	if err != nil {
-		return nil, err
-	}
-	return msg, nil
-}
-
-func (h *ChangeQuantityHandler) Is(m *Message) bool {
-	if m.Type != ChangeQuantityType {
-		return false
-	}
-	_, ok := m.Content.(*messages.ChangeQuantity)
-	return ok
-}
-
-type SetDeliveryHandler struct {
-	TypedMessageHandler
-}
-
-func (h *SetDeliveryHandler) Write(m *Message, w io.Writer) error {
-	messageBytes, err := proto.Marshal(m.Content.(*messages.SetDelivery))
-	if err != nil {
-		return err
-	}
-	w.Write(messageBytes)
-	return nil
-}
-
-func (h *SetDeliveryHandler) Read(data []byte) (interface{}, error) {
-	msg := &messages.SetDelivery{}
-
-	err := proto.Unmarshal(data, msg)
-	if err != nil {
-		return nil, err
-	}
-	return msg, nil
-}
-
-func (h *SetDeliveryHandler) Is(m *Message) bool {
-	if m.Type != ChangeQuantityType {
-		return false
-	}
-	_, ok := m.Content.(*messages.SetDelivery)
-	return ok
-}
-
-type RemoveItemHandler struct {
-	TypedMessageHandler
-}
-
-func (h *RemoveItemHandler) Write(m *Message, w io.Writer) error {
-	messageBytes, err := proto.Marshal(m.Content.(*messages.RemoveItem))
-	if err != nil {
-		return err
-	}
-	w.Write(messageBytes)
-	return nil
-}
-
-func (h *RemoveItemHandler) Read(data []byte) (interface{}, error) {
-	msg := &messages.RemoveItem{}
-
-	err := proto.Unmarshal(data, msg)
-	if err != nil {
-		return nil, err
-	}
-	return msg, nil
-}
-
-func (h *RemoveItemHandler) Is(m *Message) bool {
-	if m.Type != AddItemType {
-		return false
-	}
-	_, ok := m.Content.(*messages.RemoveItem)
-	return ok
-}
-
-type RemoveDeliveryHandler struct {
-	TypedMessageHandler
-}
-
-func (h *RemoveDeliveryHandler) Write(m *Message, w io.Writer) error {
-	messageBytes, err := proto.Marshal(m.Content.(*messages.RemoveDelivery))
-	if err != nil {
-		return err
-	}
-	w.Write(messageBytes)
-	return nil
-}
-
-func (h *RemoveDeliveryHandler) Read(data []byte) (interface{}, error) {
-	msg := &messages.RemoveDelivery{}
-
-	err := proto.Unmarshal(data, msg)
-	if err != nil {
-		return nil, err
-	}
-	return msg, nil
-}
-
-func (h *RemoveDeliveryHandler) Is(m *Message) bool {
-	if m.Type != AddItemType {
-		return false
-	}
-	_, ok := m.Content.(*messages.RemoveDelivery)
-	return ok
-}
-
-type CheckoutHandler struct {
-	TypedMessageHandler
-}
-
-func (h *CheckoutHandler) Write(m *Message, w io.Writer) error {
-	messageBytes, err := proto.Marshal(m.Content.(*messages.CreateCheckoutOrder))
-	if err != nil {
-		return err
-	}
-	w.Write(messageBytes)
-	return nil
-}
-
-func (h *CheckoutHandler) Read(data []byte) (interface{}, error) {
-	msg := &messages.CreateCheckoutOrder{}
-
-	err := proto.Unmarshal(data, msg)
-	if err != nil {
-		return nil, err
-	}
-	return msg, nil
-}
-
-func (h *CheckoutHandler) Is(m *Message) bool {
-	if m.Type != CreateCheckoutOrderType {
-		return false
-	}
-	_, ok := m.Content.(*messages.CreateCheckoutOrder)
-	return ok
-}
-
-type OrderCompletedHandler struct {
-	TypedMessageHandler
-}
-
-func (h *OrderCompletedHandler) Write(m *Message, w io.Writer) error {
-	messageBytes, err := proto.Marshal(m.Content.(*messages.OrderCreated))
-	if err != nil {
-		return err
-	}
-	w.Write(messageBytes)
-	return nil
-}
-func (h *OrderCompletedHandler) Read(data []byte) (interface{}, error) {
-	msg := &messages.OrderCreated{}
-
-	err := proto.Unmarshal(data, msg)
-	if err != nil {
-		return nil, err
-	}
-	return msg, nil
-}
-func (h *OrderCompletedHandler) Is(m *Message) bool {
-	if m.Type != OrderCompletedType {
-		return false
-	}
-	_, ok := m.Content.(*messages.OrderCreated)
-	return ok
-}

message-types.go

@@ -3,13 +3,4 @@ package main
 const (
 	AddRequestType = 1
 	AddItemType    = 2
-
-	RemoveItemType          = 4
-	RemoveDeliveryType      = 5
-	ChangeQuantityType      = 6
-	SetDeliveryType         = 7
-	SetPickupPointType      = 8
-	CreateCheckoutOrderType = 9
-	SetCartItemsType        = 10
-	OrderCompletedType      = 11
 )

message.go

@@ -3,8 +3,12 @@ package main
 import (
 	"bytes"
 	"encoding/binary"
+	"fmt"
 	"io"
 	"time"
+
+	messages "git.tornberg.me/go-cart-actor/proto"
+	"google.golang.org/protobuf/proto"
 )
 
 type StorableMessage interface {
@@ -39,12 +43,21 @@ func GetData(fn func(w io.Writer) error) ([]byte, error) {
 }
 
 func (m Message) Write(w io.Writer) error {
-	h, err := GetMessageHandler(m.Type)
-	if err != nil {
-		return err
-	}
-	data, err := GetData(func(w io.Writer) error {
-		return h.Write(&m, w)
+	data, err := GetData(func(wr io.Writer) error {
+		if m.Type == AddRequestType {
+			messageBytes, err := proto.Marshal(m.Content.(*messages.AddRequest))
+			if err != nil {
+				return err
+			}
+			wr.Write(messageBytes)
+		} else if m.Type == AddItemType {
+			messageBytes, err := proto.Marshal(m.Content.(*messages.AddItem))
+			if err != nil {
+				return err
+			}
+			wr.Write(messageBytes)
+		}
+		return nil
 	})
 	if err != nil {
 		return err
@@ -65,8 +78,7 @@ func (m Message) Write(w io.Writer) error {
 	return err
 }
 
-func ReadMessage(reader io.Reader, m *Message) error {
-
+func MessageFromReader(reader io.Reader, m *Message) error {
 	header := StorableMessageHeader{}
 	err := binary.Read(reader, binary.LittleEndian, &header)
 	if err != nil {
@@ -77,16 +89,21 @@ func ReadMessage(reader io.Reader, m *Message) error {
 	if err != nil {
 		return err
 	}
-	h, err := GetMessageHandler(header.Type)
+	switch header.Type {
+	case AddRequestType:
+		msg := &messages.AddRequest{}
+		err = proto.Unmarshal(messageBytes, msg)
+		m.Content = msg
+	case AddItemType:
+		msg := &messages.AddItem{}
+		err = proto.Unmarshal(messageBytes, msg)
+		m.Content = msg
+	default:
+		return fmt.Errorf("unknown message type")
+	}
 	if err != nil {
 		return err
 	}
-	content, err := h.Read(messageBytes)
-	if err != nil {
-		return err
-	}
-	m.Content = content
-
 	m.Type = header.Type
 	m.TimeStamp = &header.TimeStamp
 

packet.go

@@ -0,0 +1,76 @@
+package main
+
+import (
+	"encoding/binary"
+	"io"
+)
+
+const (
+	RemoteGetState      = uint16(0x01)
+	RemoteHandleMessage = uint16(0x02)
+	ResponseBody        = uint16(0x03)
+)
+
+type CartPacket struct {
+	Version     uint16
+	MessageType uint16
+	Id          CartId
+	DataLength  uint16
+}
+
+type ResponsePacket struct {
+	Version     uint16
+	MessageType uint16
+	DataLength  uint16
+}
+
+func SendCartPacket(conn io.Writer, id CartId, messageType uint16, datafn func(w io.Writer) error) error {
+	data, err := GetData(datafn)
+	if err != nil {
+		return err
+	}
+	binary.Write(conn, binary.LittleEndian, CartPacket{
+		Version:     2,
+		MessageType: messageType,
+		Id:          id,
+		DataLength:  uint16(len(data)),
+	})
+	_, err = conn.Write(data)
+	return err
+}
+
+func SendPacket(conn io.Writer, messageType uint16, datafn func(w io.Writer) error) error {
+	data, err := GetData(datafn)
+	if err != nil {
+		return err
+	}
+	binary.Write(conn, binary.LittleEndian, ResponsePacket{
+		Version:     1,
+		MessageType: messageType,
+		DataLength:  uint16(len(data)),
+	})
+	_, err = conn.Write(data)
+	return err
+}
+
+// func ReceiveCartPacket(conn io.Reader) (CartPacket, []byte, error) {
+// 	var packet CartPacket
+// 	err := binary.Read(conn, binary.LittleEndian, &packet)
+// 	if err != nil {
+// 		return packet, nil, err
+// 	}
+// 	data := make([]byte, packet.DataLength)
+// 	_, err = conn.Read(data)
+// 	return packet, data, err
+// }
+
+func ReceivePacket(conn io.Reader) (uint16, []byte, error) {
+	var packet ResponsePacket
+	err := binary.Read(conn, binary.LittleEndian, &packet)
+	if err != nil {
+		return packet.MessageType, nil, err
+	}
+	data := make([]byte, packet.DataLength)
+	_, err = conn.Read(data)
+	return packet.MessageType, data, err
+}

pool-server.go

@@ -1,349 +0,0 @@
-package main
-
-import (
-	"encoding/json"
-	"fmt"
-	"log"
-	"math/rand"
-	"net/http"
-	"strconv"
-	"time"
-
-	messages "git.tornberg.me/go-cart-actor/proto"
-)
-
-type PoolServer struct {
-	pod_name string
-	pool     GrainPool
-}
-
-func NewPoolServer(pool GrainPool, pod_name string) *PoolServer {
-	return &PoolServer{
-		pod_name: pod_name,
-		pool:     pool,
-	}
-}
-
-func (s *PoolServer) HandleGet(w http.ResponseWriter, r *http.Request, id CartId) error {
-	data, err := s.pool.Get(id)
-	if err != nil {
-		return err
-	}
-
-	return s.WriteResult(w, data)
-}
-
-func (s *PoolServer) HandleAddSku(w http.ResponseWriter, r *http.Request, id CartId) error {
-	sku := r.PathValue("sku")
-	data, err := s.pool.Process(id, Message{
-		Type:    AddRequestType,
-		Content: &messages.AddRequest{Sku: sku, Quantity: 1},
-	})
-	if err != nil {
-		return err
-	}
-	return s.WriteResult(w, data)
-}
-
-func ErrorHandler(fn func(w http.ResponseWriter, r *http.Request) error) func(w http.ResponseWriter, r *http.Request) {
-	return func(w http.ResponseWriter, r *http.Request) {
-		err := fn(w, r)
-		if err != nil {
-			log.Printf("Server error, not remote error: %v\n", err)
-			w.WriteHeader(http.StatusInternalServerError)
-			w.Write([]byte(err.Error()))
-		}
-	}
-}
-
-func (s *PoolServer) WriteResult(w http.ResponseWriter, result *FrameWithPayload) error {
-	w.Header().Set("Content-Type", "application/json")
-	w.Header().Set("Cache-Control", "no-cache")
-	w.Header().Set("Access-Control-Allow-Origin", "*")
-	w.Header().Set("X-Pod-Name", s.pod_name)
-	if result.StatusCode != 200 {
-		log.Printf("Call error: %d\n", result.StatusCode)
-		if result.StatusCode >= 200 && result.StatusCode < 600 {
-			w.WriteHeader(int(result.StatusCode))
-		} else {
-			w.WriteHeader(http.StatusInternalServerError)
-		}
-		w.Write([]byte(result.Payload))
-		return nil
-	}
-	w.WriteHeader(http.StatusOK)
-	_, err := w.Write(result.Payload)
-	return err
-}
-
-func (s *PoolServer) HandleDeleteItem(w http.ResponseWriter, r *http.Request, id CartId) error {
-
-	itemIdString := r.PathValue("itemId")
-	itemId, err := strconv.Atoi(itemIdString)
-	if err != nil {
-		return err
-	}
-	data, err := s.pool.Process(id, Message{
-		Type:    RemoveItemType,
-		Content: &messages.RemoveItem{Id: int64(itemId)},
-	})
-	if err != nil {
-		return err
-	}
-	return s.WriteResult(w, data)
-}
-
-type SetDelivery struct {
-	Provider    string                `json:"provider"`
-	Items       []int64               `json:"items"`
-	PickupPoint *messages.PickupPoint `json:"pickupPoint,omitempty"`
-}
-
-func (s *PoolServer) HandleSetDelivery(w http.ResponseWriter, r *http.Request, id CartId) error {
-
-	delivery := SetDelivery{}
-	err := json.NewDecoder(r.Body).Decode(&delivery)
-	if err != nil {
-		return err
-	}
-	data, err := s.pool.Process(id, Message{
-		Type: SetDeliveryType,
-		Content: &messages.SetDelivery{
-			Provider:    delivery.Provider,
-			Items:       delivery.Items,
-			PickupPoint: delivery.PickupPoint,
-		},
-	})
-	if err != nil {
-		return err
-	}
-	return s.WriteResult(w, data)
-}
-
-func (s *PoolServer) HandleSetPickupPoint(w http.ResponseWriter, r *http.Request, id CartId) error {
-
-	deliveryIdString := r.PathValue("deliveryId")
-	deliveryId, err := strconv.Atoi(deliveryIdString)
-	if err != nil {
-		return err
-	}
-	pickupPoint := messages.PickupPoint{}
-	err = json.NewDecoder(r.Body).Decode(&pickupPoint)
-	if err != nil {
-		return err
-	}
-	reply, err := s.pool.Process(id, Message{
-		Type: SetPickupPointType,
-		Content: &messages.SetPickupPoint{
-			DeliveryId: int64(deliveryId),
-			Id:         pickupPoint.Id,
-			Name:       pickupPoint.Name,
-			Address:    pickupPoint.Address,
-			City:       pickupPoint.City,
-			Zip:        pickupPoint.Zip,
-			Country:    pickupPoint.Country,
-		},
-	})
-	if err != nil {
-		return err
-	}
-	return s.WriteResult(w, reply)
-}
-
-func (s *PoolServer) HandleRemoveDelivery(w http.ResponseWriter, r *http.Request, id CartId) error {
-
-	deliveryIdString := r.PathValue("deliveryId")
-	deliveryId, err := strconv.Atoi(deliveryIdString)
-	if err != nil {
-		return err
-	}
-	reply, err := s.pool.Process(id, Message{
-		Type:    RemoveDeliveryType,
-		Content: &messages.RemoveDelivery{Id: int64(deliveryId)},
-	})
-	if err != nil {
-		return err
-	}
-	return s.WriteResult(w, reply)
-}
-
-func (s *PoolServer) HandleQuantityChange(w http.ResponseWriter, r *http.Request, id CartId) error {
-	changeQuantity := messages.ChangeQuantity{}
-	err := json.NewDecoder(r.Body).Decode(&changeQuantity)
-	if err != nil {
-		return err
-	}
-	reply, err := s.pool.Process(id, Message{
-		Type:    ChangeQuantityType,
-		Content: &changeQuantity,
-	})
-	if err != nil {
-		return err
-	}
-	return s.WriteResult(w, reply)
-}
-
-func (s *PoolServer) HandleSetCartItems(w http.ResponseWriter, r *http.Request, id CartId) error {
-	setCartItems := messages.SetCartRequest{}
-	err := json.NewDecoder(r.Body).Decode(&setCartItems)
-	if err != nil {
-		return err
-	}
-	reply, err := s.pool.Process(id, Message{
-		Type:    SetCartItemsType,
-		Content: &setCartItems,
-	})
-	if err != nil {
-		return err
-	}
-	return s.WriteResult(w, reply)
-}
-
-func (s *PoolServer) HandleAddRequest(w http.ResponseWriter, r *http.Request, id CartId) error {
-	addRequest := messages.AddRequest{}
-	err := json.NewDecoder(r.Body).Decode(&addRequest)
-	if err != nil {
-		return err
-	}
-	reply, err := s.pool.Process(id, Message{
-		Type:    AddRequestType,
-		Content: &addRequest,
-	})
-	if err != nil {
-		return err
-	}
-	return s.WriteResult(w, reply)
-}
-
-func (s *PoolServer) HandleConfirmation(w http.ResponseWriter, r *http.Request, id CartId) error {
-	orderId := r.PathValue("orderId")
-	if orderId == "" {
-		return fmt.Errorf("orderId is empty")
-	}
-	order, err := KlarnaInstance.GetOrder(orderId)
-
-	if err != nil {
-		return err
-	}
-
-	w.Header().Set("Content-Type", "application/json")
-	w.Header().Set("X-Pod-Name", s.pod_name)
-	w.Header().Set("Cache-Control", "no-cache")
-	w.Header().Set("Access-Control-Allow-Origin", "*")
-	w.WriteHeader(http.StatusOK)
-	return json.NewEncoder(w).Encode(order)
-}
-
-func (s *PoolServer) HandleCheckout(w http.ResponseWriter, r *http.Request, id CartId) error {
-
-	reply, err := s.pool.Process(id, Message{
-		Type: CreateCheckoutOrderType,
-		Content: &messages.CreateCheckoutOrder{
-			Terms:        "https://slask-finder.tornberg.me/terms",
-			Checkout:     "https://slask-finder.tornberg.me/checkout?order_id={checkout.order.id}",
-			Confirmation: "https://slask-finder.tornberg.me/confirmation/{checkout.order.id}",
-			Push:         "https://cart.tornberg.me/push?order_id={checkout.order.id}",
-		},
-	})
-	if err != nil {
-		return err
-	}
-	if reply.StatusCode != 200 {
-		return s.WriteResult(w, reply)
-	}
-
-	// w.Header().Set("Content-Type", "application/json")
-	// w.Header().Set("X-Pod-Name", s.pod_name)
-	// w.Header().Set("Cache-Control", "no-cache")
-	// w.Header().Set("Access-Control-Allow-Origin", "*")
-	// w.WriteHeader(http.StatusOK)
-
-	return s.WriteResult(w, reply)
-}
-
-func NewCartId() CartId {
-	id := time.Now().UnixNano() + rand.Int63()
-
-	return ToCartId(fmt.Sprintf("%d", id))
-}
-
-func CookieCartIdHandler(fn func(w http.ResponseWriter, r *http.Request, cartId CartId) error) func(w http.ResponseWriter, r *http.Request) error {
-	return func(w http.ResponseWriter, r *http.Request) error {
-		var cartId CartId
-		cartIdCookie := r.CookiesNamed("cartid")
-		if cartIdCookie == nil || len(cartIdCookie) == 0 {
-			cartId = NewCartId()
-			http.SetCookie(w, &http.Cookie{
-				Name:     "cartid",
-				Value:    cartId.String(),
-				Secure:   true,
-				HttpOnly: true,
-				Path:     "/",
-				Expires:  time.Now().AddDate(0, 0, 14),
-				SameSite: http.SameSiteLaxMode,
-			})
-		} else {
-			cartId = ToCartId(cartIdCookie[0].Value)
-		}
-		return fn(w, r, cartId)
-	}
-}
-
-func (s *PoolServer) RemoveCartCookie(w http.ResponseWriter, r *http.Request, cartId CartId) error {
-	cartId = NewCartId()
-	http.SetCookie(w, &http.Cookie{
-		Name:     "cartid",
-		Value:    cartId.String(),
-		Path:     "/",
-		Secure:   true,
-		HttpOnly: true,
-		Expires:  time.Unix(0, 0),
-		SameSite: http.SameSiteLaxMode,
-	})
-	w.WriteHeader(http.StatusOK)
-	return nil
-}
-
-func CartIdHandler(fn func(w http.ResponseWriter, r *http.Request, cartId CartId) error) func(w http.ResponseWriter, r *http.Request) error {
-	return func(w http.ResponseWriter, r *http.Request) error {
-		cartId := ToCartId(r.PathValue("id"))
-		return fn(w, r, cartId)
-	}
-}
-
-func (s *PoolServer) Serve() *http.ServeMux {
-	mux := http.NewServeMux()
-	//mux.HandleFunc("/", s.RewritePath)
-	mux.HandleFunc("OPTIONS /", func(w http.ResponseWriter, r *http.Request) {
-		w.Header().Set("Access-Control-Allow-Origin", "*")
-		w.Header().Set("Access-Control-Allow-Methods", "GET, PUT, POST, DELETE")
-		w.Header().Set("Access-Control-Allow-Headers", "Content-Type")
-		w.WriteHeader(http.StatusOK)
-	})
-
-	mux.HandleFunc("GET /", ErrorHandler(CookieCartIdHandler(s.HandleGet)))
-	mux.HandleFunc("GET /add/{sku}", ErrorHandler(CookieCartIdHandler(s.HandleAddSku)))
-	mux.HandleFunc("POST /", ErrorHandler(CookieCartIdHandler(s.HandleAddRequest)))
-	mux.HandleFunc("POST /set", ErrorHandler(CookieCartIdHandler(s.HandleSetCartItems)))
-	mux.HandleFunc("DELETE /{itemId}", ErrorHandler(CookieCartIdHandler(s.HandleDeleteItem)))
-	mux.HandleFunc("PUT /", ErrorHandler(CookieCartIdHandler(s.HandleQuantityChange)))
-	mux.HandleFunc("DELETE /", ErrorHandler(CookieCartIdHandler(s.RemoveCartCookie)))
-	mux.HandleFunc("POST /delivery", ErrorHandler(CookieCartIdHandler(s.HandleSetDelivery)))
-	mux.HandleFunc("DELETE /delivery/{deliveryId}", ErrorHandler(CookieCartIdHandler(s.HandleRemoveDelivery)))
-	mux.HandleFunc("PUT /delivery/{deliveryId}/pickupPoint", ErrorHandler(CookieCartIdHandler(s.HandleSetPickupPoint)))
-	mux.HandleFunc("GET /checkout", ErrorHandler(CookieCartIdHandler(s.HandleCheckout)))
-	mux.HandleFunc("GET /confirmation/{orderId}", ErrorHandler(CookieCartIdHandler(s.HandleConfirmation)))
-
-	mux.HandleFunc("GET /byid/{id}", ErrorHandler(CartIdHandler(s.HandleGet)))
-	mux.HandleFunc("GET /byid/{id}/add/{sku}", ErrorHandler(CartIdHandler(s.HandleAddSku)))
-	mux.HandleFunc("POST /byid/{id}", ErrorHandler(CartIdHandler(s.HandleAddRequest)))
-	mux.HandleFunc("DELETE /byid/{id}/{itemId}", ErrorHandler(CartIdHandler(s.HandleDeleteItem)))
-	mux.HandleFunc("PUT /byid/{id}", ErrorHandler(CartIdHandler(s.HandleQuantityChange)))
-	mux.HandleFunc("POST /byid/{id}/delivery", ErrorHandler(CartIdHandler(s.HandleSetDelivery)))
-	mux.HandleFunc("DELETE /byid/{id}/delivery/{deliveryId}", ErrorHandler(CartIdHandler(s.HandleRemoveDelivery)))
-	mux.HandleFunc("PUT /byid/{id}/delivery/{deliveryId}/pickupPoint", ErrorHandler(CartIdHandler(s.HandleSetPickupPoint)))
-	mux.HandleFunc("GET /byid/{id}/checkout", ErrorHandler(CartIdHandler(s.HandleCheckout)))
-	mux.HandleFunc("GET /byid/{id}/confirmation", ErrorHandler(CartIdHandler(s.HandleConfirmation)))
-
-	return mux
-}

product-fetcher.go

@@ -1,35 +0,0 @@
-package main
-
-import (
-	"encoding/json"
-	"fmt"
-	"net/http"
-
-	"github.com/matst80/slask-finder/pkg/index"
-)
-
-// TODO make this configurable
-func getBaseUrl(country string) string {
-	// if country == "se" {
-	// 	return "http://s10n-se:8080"
-	// }
-	if country == "no" {
-		return "http://s10n-no.s10n:8080"
-	}
-	if country == "se" {
-		return "http://s10n-se.s10n:8080"
-	}
-	return "http://localhost:8082"
-}
-
-func FetchItem(sku string, country string) (*index.DataItem, error) {
-	baseUrl := getBaseUrl(country)
-	res, err := http.Get(fmt.Sprintf("%s/api/by-sku/%s", baseUrl, sku))
-	if err != nil {
-		return nil, err
-	}
-	defer res.Body.Close()
-	var item index.DataItem
-	err = json.NewDecoder(res.Body).Decode(&item)
-	return &item, err
-}

proto/cart_actor.pb.go

@@ -1,420 +0,0 @@
-// Code generated by protoc-gen-go. DO NOT EDIT.
-// versions:
-// 	protoc-gen-go v1.36.10
-// 	protoc        v3.21.12
-// source: cart_actor.proto
-
-package messages
-
-import (
-	protoreflect "google.golang.org/protobuf/reflect/protoreflect"
-	protoimpl "google.golang.org/protobuf/runtime/protoimpl"
-	reflect "reflect"
-	sync "sync"
-	unsafe "unsafe"
-)
-
-const (
-	// Verify that this generated code is sufficiently up-to-date.
-	_ = protoimpl.EnforceVersion(20 - protoimpl.MinVersion)
-	// Verify that runtime/protoimpl is sufficiently up-to-date.
-	_ = protoimpl.EnforceVersion(protoimpl.MaxVersion - 20)
-)
-
-// MutationType corresponds 1:1 with the legacy uint16 message type constants.
-type MutationType int32
-
-const (
-	MutationType_MUTATION_TYPE_UNSPECIFIED MutationType = 0
-	MutationType_MUTATION_ADD_REQUEST      MutationType = 1
-	MutationType_MUTATION_ADD_ITEM         MutationType = 2
-	// (3 was unused / reserved in legacy framing)
-	MutationType_MUTATION_REMOVE_ITEM           MutationType = 4
-	MutationType_MUTATION_REMOVE_DELIVERY       MutationType = 5
-	MutationType_MUTATION_CHANGE_QUANTITY       MutationType = 6
-	MutationType_MUTATION_SET_DELIVERY          MutationType = 7
-	MutationType_MUTATION_SET_PICKUP_POINT      MutationType = 8
-	MutationType_MUTATION_CREATE_CHECKOUT_ORDER MutationType = 9
-	MutationType_MUTATION_SET_CART_ITEMS        MutationType = 10
-	MutationType_MUTATION_ORDER_COMPLETED       MutationType = 11
-)
-
-// Enum value maps for MutationType.
-var (
-	MutationType_name = map[int32]string{
-		0:  "MUTATION_TYPE_UNSPECIFIED",
-		1:  "MUTATION_ADD_REQUEST",
-		2:  "MUTATION_ADD_ITEM",
-		4:  "MUTATION_REMOVE_ITEM",
-		5:  "MUTATION_REMOVE_DELIVERY",
-		6:  "MUTATION_CHANGE_QUANTITY",
-		7:  "MUTATION_SET_DELIVERY",
-		8:  "MUTATION_SET_PICKUP_POINT",
-		9:  "MUTATION_CREATE_CHECKOUT_ORDER",
-		10: "MUTATION_SET_CART_ITEMS",
-		11: "MUTATION_ORDER_COMPLETED",
-	}
-	MutationType_value = map[string]int32{
-		"MUTATION_TYPE_UNSPECIFIED":      0,
-		"MUTATION_ADD_REQUEST":           1,
-		"MUTATION_ADD_ITEM":              2,
-		"MUTATION_REMOVE_ITEM":           4,
-		"MUTATION_REMOVE_DELIVERY":       5,
-		"MUTATION_CHANGE_QUANTITY":       6,
-		"MUTATION_SET_DELIVERY":          7,
-		"MUTATION_SET_PICKUP_POINT":      8,
-		"MUTATION_CREATE_CHECKOUT_ORDER": 9,
-		"MUTATION_SET_CART_ITEMS":        10,
-		"MUTATION_ORDER_COMPLETED":       11,
-	}
-)
-
-func (x MutationType) Enum() *MutationType {
-	p := new(MutationType)
-	*p = x
-	return p
-}
-
-func (x MutationType) String() string {
-	return protoimpl.X.EnumStringOf(x.Descriptor(), protoreflect.EnumNumber(x))
-}
-
-func (MutationType) Descriptor() protoreflect.EnumDescriptor {
-	return file_cart_actor_proto_enumTypes[0].Descriptor()
-}
-
-func (MutationType) Type() protoreflect.EnumType {
-	return &file_cart_actor_proto_enumTypes[0]
-}
-
-func (x MutationType) Number() protoreflect.EnumNumber {
-	return protoreflect.EnumNumber(x)
-}
-
-// Deprecated: Use MutationType.Descriptor instead.
-func (MutationType) EnumDescriptor() ([]byte, []int) {
-	return file_cart_actor_proto_rawDescGZIP(), []int{0}
-}
-
-// MutationRequest is an envelope:
-// - cart_id: string form of CartId (legacy 16-byte array truncated/padded).
-// - type: mutation kind (see enum).
-// - payload: serialized underlying proto message (AddRequest, AddItem, etc.).
-// - client_timestamp: optional unix timestamp; server sets if zero.
-type MutationRequest struct {
-	state           protoimpl.MessageState `protogen:"open.v1"`
-	CartId          string                 `protobuf:"bytes,1,opt,name=cart_id,json=cartId,proto3" json:"cart_id,omitempty"`
-	Type            MutationType           `protobuf:"varint,2,opt,name=type,proto3,enum=messages.MutationType" json:"type,omitempty"`
-	Payload         []byte                 `protobuf:"bytes,3,opt,name=payload,proto3" json:"payload,omitempty"`
-	ClientTimestamp int64                  `protobuf:"varint,4,opt,name=client_timestamp,json=clientTimestamp,proto3" json:"client_timestamp,omitempty"`
-	unknownFields   protoimpl.UnknownFields
-	sizeCache       protoimpl.SizeCache
-}
-
-func (x *MutationRequest) Reset() {
-	*x = MutationRequest{}
-	mi := &file_cart_actor_proto_msgTypes[0]
-	ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
-	ms.StoreMessageInfo(mi)
-}
-
-func (x *MutationRequest) String() string {
-	return protoimpl.X.MessageStringOf(x)
-}
-
-func (*MutationRequest) ProtoMessage() {}
-
-func (x *MutationRequest) ProtoReflect() protoreflect.Message {
-	mi := &file_cart_actor_proto_msgTypes[0]
-	if x != nil {
-		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
-		if ms.LoadMessageInfo() == nil {
-			ms.StoreMessageInfo(mi)
-		}
-		return ms
-	}
-	return mi.MessageOf(x)
-}
-
-// Deprecated: Use MutationRequest.ProtoReflect.Descriptor instead.
-func (*MutationRequest) Descriptor() ([]byte, []int) {
-	return file_cart_actor_proto_rawDescGZIP(), []int{0}
-}
-
-func (x *MutationRequest) GetCartId() string {
-	if x != nil {
-		return x.CartId
-	}
-	return ""
-}
-
-func (x *MutationRequest) GetType() MutationType {
-	if x != nil {
-		return x.Type
-	}
-	return MutationType_MUTATION_TYPE_UNSPECIFIED
-}
-
-func (x *MutationRequest) GetPayload() []byte {
-	if x != nil {
-		return x.Payload
-	}
-	return nil
-}
-
-func (x *MutationRequest) GetClientTimestamp() int64 {
-	if x != nil {
-		return x.ClientTimestamp
-	}
-	return 0
-}
-
-// MutationReply returns a status code (legacy semantics) plus a JSON payload
-// representing the full cart state (or an error message if non-200).
-type MutationReply struct {
-	state         protoimpl.MessageState `protogen:"open.v1"`
-	StatusCode    int32                  `protobuf:"varint,1,opt,name=status_code,json=statusCode,proto3" json:"status_code,omitempty"`
-	Payload       []byte                 `protobuf:"bytes,2,opt,name=payload,proto3" json:"payload,omitempty"` // JSON cart state or error string
-	unknownFields protoimpl.UnknownFields
-	sizeCache     protoimpl.SizeCache
-}
-
-func (x *MutationReply) Reset() {
-	*x = MutationReply{}
-	mi := &file_cart_actor_proto_msgTypes[1]
-	ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
-	ms.StoreMessageInfo(mi)
-}
-
-func (x *MutationReply) String() string {
-	return protoimpl.X.MessageStringOf(x)
-}
-
-func (*MutationReply) ProtoMessage() {}
-
-func (x *MutationReply) ProtoReflect() protoreflect.Message {
-	mi := &file_cart_actor_proto_msgTypes[1]
-	if x != nil {
-		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
-		if ms.LoadMessageInfo() == nil {
-			ms.StoreMessageInfo(mi)
-		}
-		return ms
-	}
-	return mi.MessageOf(x)
-}
-
-// Deprecated: Use MutationReply.ProtoReflect.Descriptor instead.
-func (*MutationReply) Descriptor() ([]byte, []int) {
-	return file_cart_actor_proto_rawDescGZIP(), []int{1}
-}
-
-func (x *MutationReply) GetStatusCode() int32 {
-	if x != nil {
-		return x.StatusCode
-	}
-	return 0
-}
-
-func (x *MutationReply) GetPayload() []byte {
-	if x != nil {
-		return x.Payload
-	}
-	return nil
-}
-
-// StateRequest fetches current cart state without mutation.
-type StateRequest struct {
-	state         protoimpl.MessageState `protogen:"open.v1"`
-	CartId        string                 `protobuf:"bytes,1,opt,name=cart_id,json=cartId,proto3" json:"cart_id,omitempty"`
-	unknownFields protoimpl.UnknownFields
-	sizeCache     protoimpl.SizeCache
-}
-
-func (x *StateRequest) Reset() {
-	*x = StateRequest{}
-	mi := &file_cart_actor_proto_msgTypes[2]
-	ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
-	ms.StoreMessageInfo(mi)
-}
-
-func (x *StateRequest) String() string {
-	return protoimpl.X.MessageStringOf(x)
-}
-
-func (*StateRequest) ProtoMessage() {}
-
-func (x *StateRequest) ProtoReflect() protoreflect.Message {
-	mi := &file_cart_actor_proto_msgTypes[2]
-	if x != nil {
-		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
-		if ms.LoadMessageInfo() == nil {
-			ms.StoreMessageInfo(mi)
-		}
-		return ms
-	}
-	return mi.MessageOf(x)
-}
-
-// Deprecated: Use StateRequest.ProtoReflect.Descriptor instead.
-func (*StateRequest) Descriptor() ([]byte, []int) {
-	return file_cart_actor_proto_rawDescGZIP(), []int{2}
-}
-
-func (x *StateRequest) GetCartId() string {
-	if x != nil {
-		return x.CartId
-	}
-	return ""
-}
-
-// StateReply mirrors MutationReply for consistency.
-type StateReply struct {
-	state         protoimpl.MessageState `protogen:"open.v1"`
-	StatusCode    int32                  `protobuf:"varint,1,opt,name=status_code,json=statusCode,proto3" json:"status_code,omitempty"`
-	Payload       []byte                 `protobuf:"bytes,2,opt,name=payload,proto3" json:"payload,omitempty"` // JSON cart state or error string
-	unknownFields protoimpl.UnknownFields
-	sizeCache     protoimpl.SizeCache
-}
-
-func (x *StateReply) Reset() {
-	*x = StateReply{}
-	mi := &file_cart_actor_proto_msgTypes[3]
-	ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
-	ms.StoreMessageInfo(mi)
-}
-
-func (x *StateReply) String() string {
-	return protoimpl.X.MessageStringOf(x)
-}
-
-func (*StateReply) ProtoMessage() {}
-
-func (x *StateReply) ProtoReflect() protoreflect.Message {
-	mi := &file_cart_actor_proto_msgTypes[3]
-	if x != nil {
-		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
-		if ms.LoadMessageInfo() == nil {
-			ms.StoreMessageInfo(mi)
-		}
-		return ms
-	}
-	return mi.MessageOf(x)
-}
-
-// Deprecated: Use StateReply.ProtoReflect.Descriptor instead.
-func (*StateReply) Descriptor() ([]byte, []int) {
-	return file_cart_actor_proto_rawDescGZIP(), []int{3}
-}
-
-func (x *StateReply) GetStatusCode() int32 {
-	if x != nil {
-		return x.StatusCode
-	}
-	return 0
-}
-
-func (x *StateReply) GetPayload() []byte {
-	if x != nil {
-		return x.Payload
-	}
-	return nil
-}
-
-var File_cart_actor_proto protoreflect.FileDescriptor
-
-const file_cart_actor_proto_rawDesc = "" +
-	"\n" +
-	"\x10cart_actor.proto\x12\bmessages\"\x9b\x01\n" +
-	"\x0fMutationRequest\x12\x17\n" +
-	"\acart_id\x18\x01 \x01(\tR\x06cartId\x12*\n" +
-	"\x04type\x18\x02 \x01(\x0e2\x16.messages.MutationTypeR\x04type\x12\x18\n" +
-	"\apayload\x18\x03 \x01(\fR\apayload\x12)\n" +
-	"\x10client_timestamp\x18\x04 \x01(\x03R\x0fclientTimestamp\"J\n" +
-	"\rMutationReply\x12\x1f\n" +
-	"\vstatus_code\x18\x01 \x01(\x05R\n" +
-	"statusCode\x12\x18\n" +
-	"\apayload\x18\x02 \x01(\fR\apayload\"'\n" +
-	"\fStateRequest\x12\x17\n" +
-	"\acart_id\x18\x01 \x01(\tR\x06cartId\"G\n" +
-	"\n" +
-	"StateReply\x12\x1f\n" +
-	"\vstatus_code\x18\x01 \x01(\x05R\n" +
-	"statusCode\x12\x18\n" +
-	"\apayload\x18\x02 \x01(\fR\apayload*\xcd\x02\n" +
-	"\fMutationType\x12\x1d\n" +
-	"\x19MUTATION_TYPE_UNSPECIFIED\x10\x00\x12\x18\n" +
-	"\x14MUTATION_ADD_REQUEST\x10\x01\x12\x15\n" +
-	"\x11MUTATION_ADD_ITEM\x10\x02\x12\x18\n" +
-	"\x14MUTATION_REMOVE_ITEM\x10\x04\x12\x1c\n" +
-	"\x18MUTATION_REMOVE_DELIVERY\x10\x05\x12\x1c\n" +
-	"\x18MUTATION_CHANGE_QUANTITY\x10\x06\x12\x19\n" +
-	"\x15MUTATION_SET_DELIVERY\x10\a\x12\x1d\n" +
-	"\x19MUTATION_SET_PICKUP_POINT\x10\b\x12\"\n" +
-	"\x1eMUTATION_CREATE_CHECKOUT_ORDER\x10\t\x12\x1b\n" +
-	"\x17MUTATION_SET_CART_ITEMS\x10\n" +
-	"\x12\x1c\n" +
-	"\x18MUTATION_ORDER_COMPLETED\x10\v2\x83\x01\n" +
-	"\tCartActor\x12<\n" +
-	"\x06Mutate\x12\x19.messages.MutationRequest\x1a\x17.messages.MutationReply\x128\n" +
-	"\bGetState\x12\x16.messages.StateRequest\x1a\x14.messages.StateReplyB\fZ\n" +
-	".;messagesb\x06proto3"
-
-var (
-	file_cart_actor_proto_rawDescOnce sync.Once
-	file_cart_actor_proto_rawDescData []byte
-)
-
-func file_cart_actor_proto_rawDescGZIP() []byte {
-	file_cart_actor_proto_rawDescOnce.Do(func() {
-		file_cart_actor_proto_rawDescData = protoimpl.X.CompressGZIP(unsafe.Slice(unsafe.StringData(file_cart_actor_proto_rawDesc), len(file_cart_actor_proto_rawDesc)))
-	})
-	return file_cart_actor_proto_rawDescData
-}
-
-var file_cart_actor_proto_enumTypes = make([]protoimpl.EnumInfo, 1)
-var file_cart_actor_proto_msgTypes = make([]protoimpl.MessageInfo, 4)
-var file_cart_actor_proto_goTypes = []any{
-	(MutationType)(0),       // 0: messages.MutationType
-	(*MutationRequest)(nil), // 1: messages.MutationRequest
-	(*MutationReply)(nil),   // 2: messages.MutationReply
-	(*StateRequest)(nil),    // 3: messages.StateRequest
-	(*StateReply)(nil),      // 4: messages.StateReply
-}
-var file_cart_actor_proto_depIdxs = []int32{
-	0, // 0: messages.MutationRequest.type:type_name -> messages.MutationType
-	1, // 1: messages.CartActor.Mutate:input_type -> messages.MutationRequest
-	3, // 2: messages.CartActor.GetState:input_type -> messages.StateRequest
-	2, // 3: messages.CartActor.Mutate:output_type -> messages.MutationReply
-	4, // 4: messages.CartActor.GetState:output_type -> messages.StateReply
-	3, // [3:5] is the sub-list for method output_type
-	1, // [1:3] is the sub-list for method input_type
-	1, // [1:1] is the sub-list for extension type_name
-	1, // [1:1] is the sub-list for extension extendee
-	0, // [0:1] is the sub-list for field type_name
-}
-
-func init() { file_cart_actor_proto_init() }
-func file_cart_actor_proto_init() {
-	if File_cart_actor_proto != nil {
-		return
-	}
-	type x struct{}
-	out := protoimpl.TypeBuilder{
-		File: protoimpl.DescBuilder{
-			GoPackagePath: reflect.TypeOf(x{}).PkgPath(),
-			RawDescriptor: unsafe.Slice(unsafe.StringData(file_cart_actor_proto_rawDesc), len(file_cart_actor_proto_rawDesc)),
-			NumEnums:      1,
-			NumMessages:   4,
-			NumExtensions: 0,
-			NumServices:   1,
-		},
-		GoTypes:           file_cart_actor_proto_goTypes,
-		DependencyIndexes: file_cart_actor_proto_depIdxs,
-		EnumInfos:         file_cart_actor_proto_enumTypes,
-		MessageInfos:      file_cart_actor_proto_msgTypes,
-	}.Build()
-	File_cart_actor_proto = out.File
-	file_cart_actor_proto_goTypes = nil
-	file_cart_actor_proto_depIdxs = nil
-}

proto/cart_actor.proto

@@ -1,89 +0,0 @@
-syntax = "proto3";
-
-package messages;
-
-option go_package = ".;messages";
-
-// -----------------------------------------------------------------------------
-// Cart Actor gRPC API (Envelope Variant)
-// -----------------------------------------------------------------------------
-// This service replaces the legacy custom TCP frame protocol used on port 1337.
-// It keeps the existing per-mutation proto messages (defined in messages.proto)
-// serialized into an opaque `bytes payload` field for minimal refactor cost.
-// The numeric values in MutationType MUST match the legacy message type
-// constants (see message-types.go) so persisted event logs replay correctly.
-// -----------------------------------------------------------------------------
-
-// MutationType corresponds 1:1 with the legacy uint16 message type constants.
-enum MutationType {
-  MUTATION_TYPE_UNSPECIFIED        = 0;
-  MUTATION_ADD_REQUEST             = 1;
-  MUTATION_ADD_ITEM                = 2;
-  // (3 was unused / reserved in legacy framing)
-  MUTATION_REMOVE_ITEM             = 4;
-  MUTATION_REMOVE_DELIVERY         = 5;
-  MUTATION_CHANGE_QUANTITY         = 6;
-  MUTATION_SET_DELIVERY            = 7;
-  MUTATION_SET_PICKUP_POINT        = 8;
-  MUTATION_CREATE_CHECKOUT_ORDER   = 9;
-  MUTATION_SET_CART_ITEMS          = 10;
-  MUTATION_ORDER_COMPLETED         = 11;
-}
-
-// MutationRequest is an envelope:
-// - cart_id: string form of CartId (legacy 16-byte array truncated/padded).
-// - type: mutation kind (see enum).
-// - payload: serialized underlying proto message (AddRequest, AddItem, etc.).
-// - client_timestamp: optional unix timestamp; server sets if zero.
-message MutationRequest {
-  string cart_id        = 1;
-  MutationType type     = 2;
-  bytes payload         = 3;
-  int64 client_timestamp = 4;
-}
-
-// MutationReply returns a status code (legacy semantics) plus a JSON payload
-// representing the full cart state (or an error message if non-200).
-message MutationReply {
-  int32 status_code = 1;
-  bytes payload     = 2; // JSON cart state or error string
-}
-
-// StateRequest fetches current cart state without mutation.
-message StateRequest {
-  string cart_id = 1;
-}
-
-// StateReply mirrors MutationReply for consistency.
-message StateReply {
-  int32 status_code = 1;
-  bytes payload     = 2; // JSON cart state or error string
-}
-
-// CartActor exposes mutation and state retrieval for remote grains.
-service CartActor {
-  // Mutate applies a single mutation to a cart, creating the cart lazily if needed.
-  rpc Mutate(MutationRequest) returns (MutationReply);
-
-  // GetState retrieves the cart's current state (JSON).
-  rpc GetState(StateRequest) returns (StateReply);
-}
-
-// -----------------------------------------------------------------------------
-// Notes:
-//
-// 1. Generation:
-//    protoc --go_out=. --go_opt=paths=source_relative \
-//           --go-grpc_out=. --go-grpc_opt=paths=source_relative \
-//           cart_actor.proto
-//
-// 2. Underlying mutation payloads originate from messages.proto definitions.
-//    The server side will route based on MutationType and decode payload bytes
-//    using existing handler registry logic.
-//
-// 3. Future Enhancements:
-//    - Replace JSON state payload with a strongly typed CartState proto.
-//    - Add streaming RPC (e.g. WatchState) for live updates.
-//    - Migrate control plane (negotiate/ownership) into a separate proto
-//      (control_plane.proto) as per the migration plan.
-// -----------------------------------------------------------------------------

proto/cart_actor_grpc.pb.go

@@ -1,167 +0,0 @@
-// Code generated by protoc-gen-go-grpc. DO NOT EDIT.
-// versions:
-// - protoc-gen-go-grpc v1.5.1
-// - protoc             v3.21.12
-// source: cart_actor.proto
-
-package messages
-
-import (
-	context "context"
-	grpc "google.golang.org/grpc"
-	codes "google.golang.org/grpc/codes"
-	status "google.golang.org/grpc/status"
-)
-
-// This is a compile-time assertion to ensure that this generated file
-// is compatible with the grpc package it is being compiled against.
-// Requires gRPC-Go v1.64.0 or later.
-const _ = grpc.SupportPackageIsVersion9
-
-const (
-	CartActor_Mutate_FullMethodName   = "/messages.CartActor/Mutate"
-	CartActor_GetState_FullMethodName = "/messages.CartActor/GetState"
-)
-
-// CartActorClient is the client API for CartActor service.
-//
-// For semantics around ctx use and closing/ending streaming RPCs, please refer to https://pkg.go.dev/google.golang.org/grpc/?tab=doc#ClientConn.NewStream.
-//
-// CartActor exposes mutation and state retrieval for remote grains.
-type CartActorClient interface {
-	// Mutate applies a single mutation to a cart, creating the cart lazily if needed.
-	Mutate(ctx context.Context, in *MutationRequest, opts ...grpc.CallOption) (*MutationReply, error)
-	// GetState retrieves the cart's current state (JSON).
-	GetState(ctx context.Context, in *StateRequest, opts ...grpc.CallOption) (*StateReply, error)
-}
-
-type cartActorClient struct {
-	cc grpc.ClientConnInterface
-}
-
-func NewCartActorClient(cc grpc.ClientConnInterface) CartActorClient {
-	return &cartActorClient{cc}
-}
-
-func (c *cartActorClient) Mutate(ctx context.Context, in *MutationRequest, opts ...grpc.CallOption) (*MutationReply, error) {
-	cOpts := append([]grpc.CallOption{grpc.StaticMethod()}, opts...)
-	out := new(MutationReply)
-	err := c.cc.Invoke(ctx, CartActor_Mutate_FullMethodName, in, out, cOpts...)
-	if err != nil {
-		return nil, err
-	}
-	return out, nil
-}
-
-func (c *cartActorClient) GetState(ctx context.Context, in *StateRequest, opts ...grpc.CallOption) (*StateReply, error) {
-	cOpts := append([]grpc.CallOption{grpc.StaticMethod()}, opts...)
-	out := new(StateReply)
-	err := c.cc.Invoke(ctx, CartActor_GetState_FullMethodName, in, out, cOpts...)
-	if err != nil {
-		return nil, err
-	}
-	return out, nil
-}
-
-// CartActorServer is the server API for CartActor service.
-// All implementations must embed UnimplementedCartActorServer
-// for forward compatibility.
-//
-// CartActor exposes mutation and state retrieval for remote grains.
-type CartActorServer interface {
-	// Mutate applies a single mutation to a cart, creating the cart lazily if needed.
-	Mutate(context.Context, *MutationRequest) (*MutationReply, error)
-	// GetState retrieves the cart's current state (JSON).
-	GetState(context.Context, *StateRequest) (*StateReply, error)
-	mustEmbedUnimplementedCartActorServer()
-}
-
-// UnimplementedCartActorServer must be embedded to have
-// forward compatible implementations.
-//
-// NOTE: this should be embedded by value instead of pointer to avoid a nil
-// pointer dereference when methods are called.
-type UnimplementedCartActorServer struct{}
-
-func (UnimplementedCartActorServer) Mutate(context.Context, *MutationRequest) (*MutationReply, error) {
-	return nil, status.Errorf(codes.Unimplemented, "method Mutate not implemented")
-}
-func (UnimplementedCartActorServer) GetState(context.Context, *StateRequest) (*StateReply, error) {
-	return nil, status.Errorf(codes.Unimplemented, "method GetState not implemented")
-}
-func (UnimplementedCartActorServer) mustEmbedUnimplementedCartActorServer() {}
-func (UnimplementedCartActorServer) testEmbeddedByValue()                   {}
-
-// UnsafeCartActorServer may be embedded to opt out of forward compatibility for this service.
-// Use of this interface is not recommended, as added methods to CartActorServer will
-// result in compilation errors.
-type UnsafeCartActorServer interface {
-	mustEmbedUnimplementedCartActorServer()
-}
-
-func RegisterCartActorServer(s grpc.ServiceRegistrar, srv CartActorServer) {
-	// If the following call pancis, it indicates UnimplementedCartActorServer was
-	// embedded by pointer and is nil.  This will cause panics if an
-	// unimplemented method is ever invoked, so we test this at initialization
-	// time to prevent it from happening at runtime later due to I/O.
-	if t, ok := srv.(interface{ testEmbeddedByValue() }); ok {
-		t.testEmbeddedByValue()
-	}
-	s.RegisterService(&CartActor_ServiceDesc, srv)
-}
-
-func _CartActor_Mutate_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) {
-	in := new(MutationRequest)
-	if err := dec(in); err != nil {
-		return nil, err
-	}
-	if interceptor == nil {
-		return srv.(CartActorServer).Mutate(ctx, in)
-	}
-	info := &grpc.UnaryServerInfo{
-		Server:     srv,
-		FullMethod: CartActor_Mutate_FullMethodName,
-	}
-	handler := func(ctx context.Context, req interface{}) (interface{}, error) {
-		return srv.(CartActorServer).Mutate(ctx, req.(*MutationRequest))
-	}
-	return interceptor(ctx, in, info, handler)
-}
-
-func _CartActor_GetState_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) {
-	in := new(StateRequest)
-	if err := dec(in); err != nil {
-		return nil, err
-	}
-	if interceptor == nil {
-		return srv.(CartActorServer).GetState(ctx, in)
-	}
-	info := &grpc.UnaryServerInfo{
-		Server:     srv,
-		FullMethod: CartActor_GetState_FullMethodName,
-	}
-	handler := func(ctx context.Context, req interface{}) (interface{}, error) {
-		return srv.(CartActorServer).GetState(ctx, req.(*StateRequest))
-	}
-	return interceptor(ctx, in, info, handler)
-}
-
-// CartActor_ServiceDesc is the grpc.ServiceDesc for CartActor service.
-// It's only intended for direct use with grpc.RegisterService,
-// and not to be introspected or modified (even as a copy)
-var CartActor_ServiceDesc = grpc.ServiceDesc{
-	ServiceName: "messages.CartActor",
-	HandlerType: (*CartActorServer)(nil),
-	Methods: []grpc.MethodDesc{
-		{
-			MethodName: "Mutate",
-			Handler:    _CartActor_Mutate_Handler,
-		},
-		{
-			MethodName: "GetState",
-			Handler:    _CartActor_GetState_Handler,
-		},
-	},
-	Streams:  []grpc.StreamDesc{},
-	Metadata: "cart_actor.proto",
-}

proto/control_plane.pb.go

@@ -1,496 +0,0 @@
-// Code generated by protoc-gen-go. DO NOT EDIT.
-// versions:
-// 	protoc-gen-go v1.36.10
-// 	protoc        v3.21.12
-// source: control_plane.proto
-
-package messages
-
-import (
-	protoreflect "google.golang.org/protobuf/reflect/protoreflect"
-	protoimpl "google.golang.org/protobuf/runtime/protoimpl"
-	reflect "reflect"
-	sync "sync"
-	unsafe "unsafe"
-)
-
-const (
-	// Verify that this generated code is sufficiently up-to-date.
-	_ = protoimpl.EnforceVersion(20 - protoimpl.MinVersion)
-	// Verify that runtime/protoimpl is sufficiently up-to-date.
-	_ = protoimpl.EnforceVersion(protoimpl.MaxVersion - 20)
-)
-
-// Empty request placeholder (common pattern).
-type Empty struct {
-	state         protoimpl.MessageState `protogen:"open.v1"`
-	unknownFields protoimpl.UnknownFields
-	sizeCache     protoimpl.SizeCache
-}
-
-func (x *Empty) Reset() {
-	*x = Empty{}
-	mi := &file_control_plane_proto_msgTypes[0]
-	ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
-	ms.StoreMessageInfo(mi)
-}
-
-func (x *Empty) String() string {
-	return protoimpl.X.MessageStringOf(x)
-}
-
-func (*Empty) ProtoMessage() {}
-
-func (x *Empty) ProtoReflect() protoreflect.Message {
-	mi := &file_control_plane_proto_msgTypes[0]
-	if x != nil {
-		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
-		if ms.LoadMessageInfo() == nil {
-			ms.StoreMessageInfo(mi)
-		}
-		return ms
-	}
-	return mi.MessageOf(x)
-}
-
-// Deprecated: Use Empty.ProtoReflect.Descriptor instead.
-func (*Empty) Descriptor() ([]byte, []int) {
-	return file_control_plane_proto_rawDescGZIP(), []int{0}
-}
-
-// Ping reply includes responding host and its current unix time (seconds).
-type PingReply struct {
-	state         protoimpl.MessageState `protogen:"open.v1"`
-	Host          string                 `protobuf:"bytes,1,opt,name=host,proto3" json:"host,omitempty"`
-	UnixTime      int64                  `protobuf:"varint,2,opt,name=unix_time,json=unixTime,proto3" json:"unix_time,omitempty"`
-	unknownFields protoimpl.UnknownFields
-	sizeCache     protoimpl.SizeCache
-}
-
-func (x *PingReply) Reset() {
-	*x = PingReply{}
-	mi := &file_control_plane_proto_msgTypes[1]
-	ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
-	ms.StoreMessageInfo(mi)
-}
-
-func (x *PingReply) String() string {
-	return protoimpl.X.MessageStringOf(x)
-}
-
-func (*PingReply) ProtoMessage() {}
-
-func (x *PingReply) ProtoReflect() protoreflect.Message {
-	mi := &file_control_plane_proto_msgTypes[1]
-	if x != nil {
-		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
-		if ms.LoadMessageInfo() == nil {
-			ms.StoreMessageInfo(mi)
-		}
-		return ms
-	}
-	return mi.MessageOf(x)
-}
-
-// Deprecated: Use PingReply.ProtoReflect.Descriptor instead.
-func (*PingReply) Descriptor() ([]byte, []int) {
-	return file_control_plane_proto_rawDescGZIP(), []int{1}
-}
-
-func (x *PingReply) GetHost() string {
-	if x != nil {
-		return x.Host
-	}
-	return ""
-}
-
-func (x *PingReply) GetUnixTime() int64 {
-	if x != nil {
-		return x.UnixTime
-	}
-	return 0
-}
-
-// NegotiateRequest carries the caller's full view of known hosts (including self).
-type NegotiateRequest struct {
-	state         protoimpl.MessageState `protogen:"open.v1"`
-	KnownHosts    []string               `protobuf:"bytes,1,rep,name=known_hosts,json=knownHosts,proto3" json:"known_hosts,omitempty"`
-	unknownFields protoimpl.UnknownFields
-	sizeCache     protoimpl.SizeCache
-}
-
-func (x *NegotiateRequest) Reset() {
-	*x = NegotiateRequest{}
-	mi := &file_control_plane_proto_msgTypes[2]
-	ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
-	ms.StoreMessageInfo(mi)
-}
-
-func (x *NegotiateRequest) String() string {
-	return protoimpl.X.MessageStringOf(x)
-}
-
-func (*NegotiateRequest) ProtoMessage() {}
-
-func (x *NegotiateRequest) ProtoReflect() protoreflect.Message {
-	mi := &file_control_plane_proto_msgTypes[2]
-	if x != nil {
-		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
-		if ms.LoadMessageInfo() == nil {
-			ms.StoreMessageInfo(mi)
-		}
-		return ms
-	}
-	return mi.MessageOf(x)
-}
-
-// Deprecated: Use NegotiateRequest.ProtoReflect.Descriptor instead.
-func (*NegotiateRequest) Descriptor() ([]byte, []int) {
-	return file_control_plane_proto_rawDescGZIP(), []int{2}
-}
-
-func (x *NegotiateRequest) GetKnownHosts() []string {
-	if x != nil {
-		return x.KnownHosts
-	}
-	return nil
-}
-
-// NegotiateReply returns the callee's healthy hosts (including itself).
-type NegotiateReply struct {
-	state         protoimpl.MessageState `protogen:"open.v1"`
-	Hosts         []string               `protobuf:"bytes,1,rep,name=hosts,proto3" json:"hosts,omitempty"`
-	unknownFields protoimpl.UnknownFields
-	sizeCache     protoimpl.SizeCache
-}
-
-func (x *NegotiateReply) Reset() {
-	*x = NegotiateReply{}
-	mi := &file_control_plane_proto_msgTypes[3]
-	ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
-	ms.StoreMessageInfo(mi)
-}
-
-func (x *NegotiateReply) String() string {
-	return protoimpl.X.MessageStringOf(x)
-}
-
-func (*NegotiateReply) ProtoMessage() {}
-
-func (x *NegotiateReply) ProtoReflect() protoreflect.Message {
-	mi := &file_control_plane_proto_msgTypes[3]
-	if x != nil {
-		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
-		if ms.LoadMessageInfo() == nil {
-			ms.StoreMessageInfo(mi)
-		}
-		return ms
-	}
-	return mi.MessageOf(x)
-}
-
-// Deprecated: Use NegotiateReply.ProtoReflect.Descriptor instead.
-func (*NegotiateReply) Descriptor() ([]byte, []int) {
-	return file_control_plane_proto_rawDescGZIP(), []int{3}
-}
-
-func (x *NegotiateReply) GetHosts() []string {
-	if x != nil {
-		return x.Hosts
-	}
-	return nil
-}
-
-// CartIdsReply returns the list of cart IDs (string form) currently owned locally.
-type CartIdsReply struct {
-	state         protoimpl.MessageState `protogen:"open.v1"`
-	CartIds       []string               `protobuf:"bytes,1,rep,name=cart_ids,json=cartIds,proto3" json:"cart_ids,omitempty"`
-	unknownFields protoimpl.UnknownFields
-	sizeCache     protoimpl.SizeCache
-}
-
-func (x *CartIdsReply) Reset() {
-	*x = CartIdsReply{}
-	mi := &file_control_plane_proto_msgTypes[4]
-	ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
-	ms.StoreMessageInfo(mi)
-}
-
-func (x *CartIdsReply) String() string {
-	return protoimpl.X.MessageStringOf(x)
-}
-
-func (*CartIdsReply) ProtoMessage() {}
-
-func (x *CartIdsReply) ProtoReflect() protoreflect.Message {
-	mi := &file_control_plane_proto_msgTypes[4]
-	if x != nil {
-		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
-		if ms.LoadMessageInfo() == nil {
-			ms.StoreMessageInfo(mi)
-		}
-		return ms
-	}
-	return mi.MessageOf(x)
-}
-
-// Deprecated: Use CartIdsReply.ProtoReflect.Descriptor instead.
-func (*CartIdsReply) Descriptor() ([]byte, []int) {
-	return file_control_plane_proto_rawDescGZIP(), []int{4}
-}
-
-func (x *CartIdsReply) GetCartIds() []string {
-	if x != nil {
-		return x.CartIds
-	}
-	return nil
-}
-
-// OwnerChangeRequest notifies peers that ownership of a cart moved (or is moving) to new_host.
-type OwnerChangeRequest struct {
-	state         protoimpl.MessageState `protogen:"open.v1"`
-	CartId        string                 `protobuf:"bytes,1,opt,name=cart_id,json=cartId,proto3" json:"cart_id,omitempty"`
-	NewHost       string                 `protobuf:"bytes,2,opt,name=new_host,json=newHost,proto3" json:"new_host,omitempty"`
-	unknownFields protoimpl.UnknownFields
-	sizeCache     protoimpl.SizeCache
-}
-
-func (x *OwnerChangeRequest) Reset() {
-	*x = OwnerChangeRequest{}
-	mi := &file_control_plane_proto_msgTypes[5]
-	ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
-	ms.StoreMessageInfo(mi)
-}
-
-func (x *OwnerChangeRequest) String() string {
-	return protoimpl.X.MessageStringOf(x)
-}
-
-func (*OwnerChangeRequest) ProtoMessage() {}
-
-func (x *OwnerChangeRequest) ProtoReflect() protoreflect.Message {
-	mi := &file_control_plane_proto_msgTypes[5]
-	if x != nil {
-		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
-		if ms.LoadMessageInfo() == nil {
-			ms.StoreMessageInfo(mi)
-		}
-		return ms
-	}
-	return mi.MessageOf(x)
-}
-
-// Deprecated: Use OwnerChangeRequest.ProtoReflect.Descriptor instead.
-func (*OwnerChangeRequest) Descriptor() ([]byte, []int) {
-	return file_control_plane_proto_rawDescGZIP(), []int{5}
-}
-
-func (x *OwnerChangeRequest) GetCartId() string {
-	if x != nil {
-		return x.CartId
-	}
-	return ""
-}
-
-func (x *OwnerChangeRequest) GetNewHost() string {
-	if x != nil {
-		return x.NewHost
-	}
-	return ""
-}
-
-// OwnerChangeAck indicates acceptance or rejection of an ownership change.
-type OwnerChangeAck struct {
-	state         protoimpl.MessageState `protogen:"open.v1"`
-	Accepted      bool                   `protobuf:"varint,1,opt,name=accepted,proto3" json:"accepted,omitempty"`
-	Message       string                 `protobuf:"bytes,2,opt,name=message,proto3" json:"message,omitempty"`
-	unknownFields protoimpl.UnknownFields
-	sizeCache     protoimpl.SizeCache
-}
-
-func (x *OwnerChangeAck) Reset() {
-	*x = OwnerChangeAck{}
-	mi := &file_control_plane_proto_msgTypes[6]
-	ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
-	ms.StoreMessageInfo(mi)
-}
-
-func (x *OwnerChangeAck) String() string {
-	return protoimpl.X.MessageStringOf(x)
-}
-
-func (*OwnerChangeAck) ProtoMessage() {}
-
-func (x *OwnerChangeAck) ProtoReflect() protoreflect.Message {
-	mi := &file_control_plane_proto_msgTypes[6]
-	if x != nil {
-		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
-		if ms.LoadMessageInfo() == nil {
-			ms.StoreMessageInfo(mi)
-		}
-		return ms
-	}
-	return mi.MessageOf(x)
-}
-
-// Deprecated: Use OwnerChangeAck.ProtoReflect.Descriptor instead.
-func (*OwnerChangeAck) Descriptor() ([]byte, []int) {
-	return file_control_plane_proto_rawDescGZIP(), []int{6}
-}
-
-func (x *OwnerChangeAck) GetAccepted() bool {
-	if x != nil {
-		return x.Accepted
-	}
-	return false
-}
-
-func (x *OwnerChangeAck) GetMessage() string {
-	if x != nil {
-		return x.Message
-	}
-	return ""
-}
-
-// ClosingNotice notifies peers this host is terminating (so they can drop / re-resolve).
-type ClosingNotice struct {
-	state         protoimpl.MessageState `protogen:"open.v1"`
-	Host          string                 `protobuf:"bytes,1,opt,name=host,proto3" json:"host,omitempty"`
-	unknownFields protoimpl.UnknownFields
-	sizeCache     protoimpl.SizeCache
-}
-
-func (x *ClosingNotice) Reset() {
-	*x = ClosingNotice{}
-	mi := &file_control_plane_proto_msgTypes[7]
-	ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
-	ms.StoreMessageInfo(mi)
-}
-
-func (x *ClosingNotice) String() string {
-	return protoimpl.X.MessageStringOf(x)
-}
-
-func (*ClosingNotice) ProtoMessage() {}
-
-func (x *ClosingNotice) ProtoReflect() protoreflect.Message {
-	mi := &file_control_plane_proto_msgTypes[7]
-	if x != nil {
-		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
-		if ms.LoadMessageInfo() == nil {
-			ms.StoreMessageInfo(mi)
-		}
-		return ms
-	}
-	return mi.MessageOf(x)
-}
-
-// Deprecated: Use ClosingNotice.ProtoReflect.Descriptor instead.
-func (*ClosingNotice) Descriptor() ([]byte, []int) {
-	return file_control_plane_proto_rawDescGZIP(), []int{7}
-}
-
-func (x *ClosingNotice) GetHost() string {
-	if x != nil {
-		return x.Host
-	}
-	return ""
-}
-
-var File_control_plane_proto protoreflect.FileDescriptor
-
-const file_control_plane_proto_rawDesc = "" +
-	"\n" +
-	"\x13control_plane.proto\x12\bmessages\"\a\n" +
-	"\x05Empty\"<\n" +
-	"\tPingReply\x12\x12\n" +
-	"\x04host\x18\x01 \x01(\tR\x04host\x12\x1b\n" +
-	"\tunix_time\x18\x02 \x01(\x03R\bunixTime\"3\n" +
-	"\x10NegotiateRequest\x12\x1f\n" +
-	"\vknown_hosts\x18\x01 \x03(\tR\n" +
-	"knownHosts\"&\n" +
-	"\x0eNegotiateReply\x12\x14\n" +
-	"\x05hosts\x18\x01 \x03(\tR\x05hosts\")\n" +
-	"\fCartIdsReply\x12\x19\n" +
-	"\bcart_ids\x18\x01 \x03(\tR\acartIds\"H\n" +
-	"\x12OwnerChangeRequest\x12\x17\n" +
-	"\acart_id\x18\x01 \x01(\tR\x06cartId\x12\x19\n" +
-	"\bnew_host\x18\x02 \x01(\tR\anewHost\"F\n" +
-	"\x0eOwnerChangeAck\x12\x1a\n" +
-	"\baccepted\x18\x01 \x01(\bR\baccepted\x12\x18\n" +
-	"\amessage\x18\x02 \x01(\tR\amessage\"#\n" +
-	"\rClosingNotice\x12\x12\n" +
-	"\x04host\x18\x01 \x01(\tR\x04host2\xbc\x02\n" +
-	"\fControlPlane\x12,\n" +
-	"\x04Ping\x12\x0f.messages.Empty\x1a\x13.messages.PingReply\x12A\n" +
-	"\tNegotiate\x12\x1a.messages.NegotiateRequest\x1a\x18.messages.NegotiateReply\x125\n" +
-	"\n" +
-	"GetCartIds\x12\x0f.messages.Empty\x1a\x16.messages.CartIdsReply\x12F\n" +
-	"\fConfirmOwner\x12\x1c.messages.OwnerChangeRequest\x1a\x18.messages.OwnerChangeAck\x12<\n" +
-	"\aClosing\x12\x17.messages.ClosingNotice\x1a\x18.messages.OwnerChangeAckB\fZ\n" +
-	".;messagesb\x06proto3"
-
-var (
-	file_control_plane_proto_rawDescOnce sync.Once
-	file_control_plane_proto_rawDescData []byte
-)
-
-func file_control_plane_proto_rawDescGZIP() []byte {
-	file_control_plane_proto_rawDescOnce.Do(func() {
-		file_control_plane_proto_rawDescData = protoimpl.X.CompressGZIP(unsafe.Slice(unsafe.StringData(file_control_plane_proto_rawDesc), len(file_control_plane_proto_rawDesc)))
-	})
-	return file_control_plane_proto_rawDescData
-}
-
-var file_control_plane_proto_msgTypes = make([]protoimpl.MessageInfo, 8)
-var file_control_plane_proto_goTypes = []any{
-	(*Empty)(nil),              // 0: messages.Empty
-	(*PingReply)(nil),          // 1: messages.PingReply
-	(*NegotiateRequest)(nil),   // 2: messages.NegotiateRequest
-	(*NegotiateReply)(nil),     // 3: messages.NegotiateReply
-	(*CartIdsReply)(nil),       // 4: messages.CartIdsReply
-	(*OwnerChangeRequest)(nil), // 5: messages.OwnerChangeRequest
-	(*OwnerChangeAck)(nil),     // 6: messages.OwnerChangeAck
-	(*ClosingNotice)(nil),      // 7: messages.ClosingNotice
-}
-var file_control_plane_proto_depIdxs = []int32{
-	0, // 0: messages.ControlPlane.Ping:input_type -> messages.Empty
-	2, // 1: messages.ControlPlane.Negotiate:input_type -> messages.NegotiateRequest
-	0, // 2: messages.ControlPlane.GetCartIds:input_type -> messages.Empty
-	5, // 3: messages.ControlPlane.ConfirmOwner:input_type -> messages.OwnerChangeRequest
-	7, // 4: messages.ControlPlane.Closing:input_type -> messages.ClosingNotice
-	1, // 5: messages.ControlPlane.Ping:output_type -> messages.PingReply
-	3, // 6: messages.ControlPlane.Negotiate:output_type -> messages.NegotiateReply
-	4, // 7: messages.ControlPlane.GetCartIds:output_type -> messages.CartIdsReply
-	6, // 8: messages.ControlPlane.ConfirmOwner:output_type -> messages.OwnerChangeAck
-	6, // 9: messages.ControlPlane.Closing:output_type -> messages.OwnerChangeAck
-	5, // [5:10] is the sub-list for method output_type
-	0, // [0:5] is the sub-list for method input_type
-	0, // [0:0] is the sub-list for extension type_name
-	0, // [0:0] is the sub-list for extension extendee
-	0, // [0:0] is the sub-list for field type_name
-}
-
-func init() { file_control_plane_proto_init() }
-func file_control_plane_proto_init() {
-	if File_control_plane_proto != nil {
-		return
-	}
-	type x struct{}
-	out := protoimpl.TypeBuilder{
-		File: protoimpl.DescBuilder{
-			GoPackagePath: reflect.TypeOf(x{}).PkgPath(),
-			RawDescriptor: unsafe.Slice(unsafe.StringData(file_control_plane_proto_rawDesc), len(file_control_plane_proto_rawDesc)),
-			NumEnums:      0,
-			NumMessages:   8,
-			NumExtensions: 0,
-			NumServices:   1,
-		},
-		GoTypes:           file_control_plane_proto_goTypes,
-		DependencyIndexes: file_control_plane_proto_depIdxs,
-		MessageInfos:      file_control_plane_proto_msgTypes,
-	}.Build()
-	File_control_plane_proto = out.File
-	file_control_plane_proto_goTypes = nil
-	file_control_plane_proto_depIdxs = nil
-}

proto/control_plane.proto

@@ -1,89 +0,0 @@
-syntax = "proto3";
-
-package messages;
-
-option go_package = ".;messages";
-
-// -----------------------------------------------------------------------------
-// Control Plane gRPC API
-// -----------------------------------------------------------------------------
-// Replaces the legacy custom frame-based control channel (previously port 1338).
-// Responsibilities:
-//   - Liveness (Ping)
-//   - Membership negotiation (Negotiate)
-//   - Cart ownership change propagation (ConfirmOwner)
-//   - Cart ID listing for remote grain spawning (GetCartIds)
-//   - Graceful shutdown notifications (Closing)
-// No authentication / TLS is defined initially (can be added later).
-// -----------------------------------------------------------------------------
-
-// Empty request placeholder (common pattern).
-message Empty {}
-
-// Ping reply includes responding host and its current unix time (seconds).
-message PingReply {
-  string host = 1;
-  int64 unix_time = 2;
-}
-
-// NegotiateRequest carries the caller's full view of known hosts (including self).
-message NegotiateRequest {
-  repeated string known_hosts = 1;
-}
-
-// NegotiateReply returns the callee's healthy hosts (including itself).
-message NegotiateReply {
-  repeated string hosts = 1;
-}
-
-// CartIdsReply returns the list of cart IDs (string form) currently owned locally.
-message CartIdsReply {
-  repeated string cart_ids = 1;
-}
-
-// OwnerChangeRequest notifies peers that ownership of a cart moved (or is moving) to new_host.
-message OwnerChangeRequest {
-  string cart_id = 1;
-  string new_host = 2;
-}
-
-// OwnerChangeAck indicates acceptance or rejection of an ownership change.
-message OwnerChangeAck {
-  bool accepted = 1;
-  string message = 2;
-}
-
-// ClosingNotice notifies peers this host is terminating (so they can drop / re-resolve).
-message ClosingNotice {
-  string host = 1;
-}
-
-// ControlPlane defines cluster coordination and ownership operations.
-service ControlPlane {
-  // Ping for liveness; lightweight health signal.
-  rpc Ping(Empty) returns (PingReply);
-
-  // Negotiate merges host views; used during discovery & convergence.
-  rpc Negotiate(NegotiateRequest) returns (NegotiateReply);
-
-  // GetCartIds lists currently owned cart IDs on this node.
-  rpc GetCartIds(Empty) returns (CartIdsReply);
-
-  // ConfirmOwner announces/asks peers to acknowledge ownership transfer.
-  rpc ConfirmOwner(OwnerChangeRequest) returns (OwnerChangeAck);
-
-  // Closing announces graceful shutdown so peers can proactively adjust.
-  rpc Closing(ClosingNotice) returns (OwnerChangeAck);
-}
-
-// -----------------------------------------------------------------------------
-// Generation Instructions:
-// protoc --go_out=. --go_opt=paths=source_relative \
-//        --go-grpc_out=. --go-grpc_opt=paths=source_relative \
-//        control_plane.proto
-//
-// Future Enhancements:
-//  - Add a streaming membership watch (server -> client) for immediate updates.
-//  - Add TLS / mTLS for secure intra-cluster communication.
-//  - Add richer health metadata (load, grain count) in PingReply.
-// -----------------------------------------------------------------------------

proto/control_plane_grpc.pb.go

@@ -1,287 +0,0 @@
-// Code generated by protoc-gen-go-grpc. DO NOT EDIT.
-// versions:
-// - protoc-gen-go-grpc v1.5.1
-// - protoc             v3.21.12
-// source: control_plane.proto
-
-package messages
-
-import (
-	context "context"
-	grpc "google.golang.org/grpc"
-	codes "google.golang.org/grpc/codes"
-	status "google.golang.org/grpc/status"
-)
-
-// This is a compile-time assertion to ensure that this generated file
-// is compatible with the grpc package it is being compiled against.
-// Requires gRPC-Go v1.64.0 or later.
-const _ = grpc.SupportPackageIsVersion9
-
-const (
-	ControlPlane_Ping_FullMethodName         = "/messages.ControlPlane/Ping"
-	ControlPlane_Negotiate_FullMethodName    = "/messages.ControlPlane/Negotiate"
-	ControlPlane_GetCartIds_FullMethodName   = "/messages.ControlPlane/GetCartIds"
-	ControlPlane_ConfirmOwner_FullMethodName = "/messages.ControlPlane/ConfirmOwner"
-	ControlPlane_Closing_FullMethodName      = "/messages.ControlPlane/Closing"
-)
-
-// ControlPlaneClient is the client API for ControlPlane service.
-//
-// For semantics around ctx use and closing/ending streaming RPCs, please refer to https://pkg.go.dev/google.golang.org/grpc/?tab=doc#ClientConn.NewStream.
-//
-// ControlPlane defines cluster coordination and ownership operations.
-type ControlPlaneClient interface {
-	// Ping for liveness; lightweight health signal.
-	Ping(ctx context.Context, in *Empty, opts ...grpc.CallOption) (*PingReply, error)
-	// Negotiate merges host views; used during discovery & convergence.
-	Negotiate(ctx context.Context, in *NegotiateRequest, opts ...grpc.CallOption) (*NegotiateReply, error)
-	// GetCartIds lists currently owned cart IDs on this node.
-	GetCartIds(ctx context.Context, in *Empty, opts ...grpc.CallOption) (*CartIdsReply, error)
-	// ConfirmOwner announces/asks peers to acknowledge ownership transfer.
-	ConfirmOwner(ctx context.Context, in *OwnerChangeRequest, opts ...grpc.CallOption) (*OwnerChangeAck, error)
-	// Closing announces graceful shutdown so peers can proactively adjust.
-	Closing(ctx context.Context, in *ClosingNotice, opts ...grpc.CallOption) (*OwnerChangeAck, error)
-}
-
-type controlPlaneClient struct {
-	cc grpc.ClientConnInterface
-}
-
-func NewControlPlaneClient(cc grpc.ClientConnInterface) ControlPlaneClient {
-	return &controlPlaneClient{cc}
-}
-
-func (c *controlPlaneClient) Ping(ctx context.Context, in *Empty, opts ...grpc.CallOption) (*PingReply, error) {
-	cOpts := append([]grpc.CallOption{grpc.StaticMethod()}, opts...)
-	out := new(PingReply)
-	err := c.cc.Invoke(ctx, ControlPlane_Ping_FullMethodName, in, out, cOpts...)
-	if err != nil {
-		return nil, err
-	}
-	return out, nil
-}
-
-func (c *controlPlaneClient) Negotiate(ctx context.Context, in *NegotiateRequest, opts ...grpc.CallOption) (*NegotiateReply, error) {
-	cOpts := append([]grpc.CallOption{grpc.StaticMethod()}, opts...)
-	out := new(NegotiateReply)
-	err := c.cc.Invoke(ctx, ControlPlane_Negotiate_FullMethodName, in, out, cOpts...)
-	if err != nil {
-		return nil, err
-	}
-	return out, nil
-}
-
-func (c *controlPlaneClient) GetCartIds(ctx context.Context, in *Empty, opts ...grpc.CallOption) (*CartIdsReply, error) {
-	cOpts := append([]grpc.CallOption{grpc.StaticMethod()}, opts...)
-	out := new(CartIdsReply)
-	err := c.cc.Invoke(ctx, ControlPlane_GetCartIds_FullMethodName, in, out, cOpts...)
-	if err != nil {
-		return nil, err
-	}
-	return out, nil
-}
-
-func (c *controlPlaneClient) ConfirmOwner(ctx context.Context, in *OwnerChangeRequest, opts ...grpc.CallOption) (*OwnerChangeAck, error) {
-	cOpts := append([]grpc.CallOption{grpc.StaticMethod()}, opts...)
-	out := new(OwnerChangeAck)
-	err := c.cc.Invoke(ctx, ControlPlane_ConfirmOwner_FullMethodName, in, out, cOpts...)
-	if err != nil {
-		return nil, err
-	}
-	return out, nil
-}
-
-func (c *controlPlaneClient) Closing(ctx context.Context, in *ClosingNotice, opts ...grpc.CallOption) (*OwnerChangeAck, error) {
-	cOpts := append([]grpc.CallOption{grpc.StaticMethod()}, opts...)
-	out := new(OwnerChangeAck)
-	err := c.cc.Invoke(ctx, ControlPlane_Closing_FullMethodName, in, out, cOpts...)
-	if err != nil {
-		return nil, err
-	}
-	return out, nil
-}
-
-// ControlPlaneServer is the server API for ControlPlane service.
-// All implementations must embed UnimplementedControlPlaneServer
-// for forward compatibility.
-//
-// ControlPlane defines cluster coordination and ownership operations.
-type ControlPlaneServer interface {
-	// Ping for liveness; lightweight health signal.
-	Ping(context.Context, *Empty) (*PingReply, error)
-	// Negotiate merges host views; used during discovery & convergence.
-	Negotiate(context.Context, *NegotiateRequest) (*NegotiateReply, error)
-	// GetCartIds lists currently owned cart IDs on this node.
-	GetCartIds(context.Context, *Empty) (*CartIdsReply, error)
-	// ConfirmOwner announces/asks peers to acknowledge ownership transfer.
-	ConfirmOwner(context.Context, *OwnerChangeRequest) (*OwnerChangeAck, error)
-	// Closing announces graceful shutdown so peers can proactively adjust.
-	Closing(context.Context, *ClosingNotice) (*OwnerChangeAck, error)
-	mustEmbedUnimplementedControlPlaneServer()
-}
-
-// UnimplementedControlPlaneServer must be embedded to have
-// forward compatible implementations.
-//
-// NOTE: this should be embedded by value instead of pointer to avoid a nil
-// pointer dereference when methods are called.
-type UnimplementedControlPlaneServer struct{}
-
-func (UnimplementedControlPlaneServer) Ping(context.Context, *Empty) (*PingReply, error) {
-	return nil, status.Errorf(codes.Unimplemented, "method Ping not implemented")
-}
-func (UnimplementedControlPlaneServer) Negotiate(context.Context, *NegotiateRequest) (*NegotiateReply, error) {
-	return nil, status.Errorf(codes.Unimplemented, "method Negotiate not implemented")
-}
-func (UnimplementedControlPlaneServer) GetCartIds(context.Context, *Empty) (*CartIdsReply, error) {
-	return nil, status.Errorf(codes.Unimplemented, "method GetCartIds not implemented")
-}
-func (UnimplementedControlPlaneServer) ConfirmOwner(context.Context, *OwnerChangeRequest) (*OwnerChangeAck, error) {
-	return nil, status.Errorf(codes.Unimplemented, "method ConfirmOwner not implemented")
-}
-func (UnimplementedControlPlaneServer) Closing(context.Context, *ClosingNotice) (*OwnerChangeAck, error) {
-	return nil, status.Errorf(codes.Unimplemented, "method Closing not implemented")
-}
-func (UnimplementedControlPlaneServer) mustEmbedUnimplementedControlPlaneServer() {}
-func (UnimplementedControlPlaneServer) testEmbeddedByValue()                      {}
-
-// UnsafeControlPlaneServer may be embedded to opt out of forward compatibility for this service.
-// Use of this interface is not recommended, as added methods to ControlPlaneServer will
-// result in compilation errors.
-type UnsafeControlPlaneServer interface {
-	mustEmbedUnimplementedControlPlaneServer()
-}
-
-func RegisterControlPlaneServer(s grpc.ServiceRegistrar, srv ControlPlaneServer) {
-	// If the following call pancis, it indicates UnimplementedControlPlaneServer was
-	// embedded by pointer and is nil.  This will cause panics if an
-	// unimplemented method is ever invoked, so we test this at initialization
-	// time to prevent it from happening at runtime later due to I/O.
-	if t, ok := srv.(interface{ testEmbeddedByValue() }); ok {
-		t.testEmbeddedByValue()
-	}
-	s.RegisterService(&ControlPlane_ServiceDesc, srv)
-}
-
-func _ControlPlane_Ping_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) {
-	in := new(Empty)
-	if err := dec(in); err != nil {
-		return nil, err
-	}
-	if interceptor == nil {
-		return srv.(ControlPlaneServer).Ping(ctx, in)
-	}
-	info := &grpc.UnaryServerInfo{
-		Server:     srv,
-		FullMethod: ControlPlane_Ping_FullMethodName,
-	}
-	handler := func(ctx context.Context, req interface{}) (interface{}, error) {
-		return srv.(ControlPlaneServer).Ping(ctx, req.(*Empty))
-	}
-	return interceptor(ctx, in, info, handler)
-}
-
-func _ControlPlane_Negotiate_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) {
-	in := new(NegotiateRequest)
-	if err := dec(in); err != nil {
-		return nil, err
-	}
-	if interceptor == nil {
-		return srv.(ControlPlaneServer).Negotiate(ctx, in)
-	}
-	info := &grpc.UnaryServerInfo{
-		Server:     srv,
-		FullMethod: ControlPlane_Negotiate_FullMethodName,
-	}
-	handler := func(ctx context.Context, req interface{}) (interface{}, error) {
-		return srv.(ControlPlaneServer).Negotiate(ctx, req.(*NegotiateRequest))
-	}
-	return interceptor(ctx, in, info, handler)
-}
-
-func _ControlPlane_GetCartIds_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) {
-	in := new(Empty)
-	if err := dec(in); err != nil {
-		return nil, err
-	}
-	if interceptor == nil {
-		return srv.(ControlPlaneServer).GetCartIds(ctx, in)
-	}
-	info := &grpc.UnaryServerInfo{
-		Server:     srv,
-		FullMethod: ControlPlane_GetCartIds_FullMethodName,
-	}
-	handler := func(ctx context.Context, req interface{}) (interface{}, error) {
-		return srv.(ControlPlaneServer).GetCartIds(ctx, req.(*Empty))
-	}
-	return interceptor(ctx, in, info, handler)
-}
-
-func _ControlPlane_ConfirmOwner_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) {
-	in := new(OwnerChangeRequest)
-	if err := dec(in); err != nil {
-		return nil, err
-	}
-	if interceptor == nil {
-		return srv.(ControlPlaneServer).ConfirmOwner(ctx, in)
-	}
-	info := &grpc.UnaryServerInfo{
-		Server:     srv,
-		FullMethod: ControlPlane_ConfirmOwner_FullMethodName,
-	}
-	handler := func(ctx context.Context, req interface{}) (interface{}, error) {
-		return srv.(ControlPlaneServer).ConfirmOwner(ctx, req.(*OwnerChangeRequest))
-	}
-	return interceptor(ctx, in, info, handler)
-}
-
-func _ControlPlane_Closing_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) {
-	in := new(ClosingNotice)
-	if err := dec(in); err != nil {
-		return nil, err
-	}
-	if interceptor == nil {
-		return srv.(ControlPlaneServer).Closing(ctx, in)
-	}
-	info := &grpc.UnaryServerInfo{
-		Server:     srv,
-		FullMethod: ControlPlane_Closing_FullMethodName,
-	}
-	handler := func(ctx context.Context, req interface{}) (interface{}, error) {
-		return srv.(ControlPlaneServer).Closing(ctx, req.(*ClosingNotice))
-	}
-	return interceptor(ctx, in, info, handler)
-}
-
-// ControlPlane_ServiceDesc is the grpc.ServiceDesc for ControlPlane service.
-// It's only intended for direct use with grpc.RegisterService,
-// and not to be introspected or modified (even as a copy)
-var ControlPlane_ServiceDesc = grpc.ServiceDesc{
-	ServiceName: "messages.ControlPlane",
-	HandlerType: (*ControlPlaneServer)(nil),
-	Methods: []grpc.MethodDesc{
-		{
-			MethodName: "Ping",
-			Handler:    _ControlPlane_Ping_Handler,
-		},
-		{
-			MethodName: "Negotiate",
-			Handler:    _ControlPlane_Negotiate_Handler,
-		},
-		{
-			MethodName: "GetCartIds",
-			Handler:    _ControlPlane_GetCartIds_Handler,
-		},
-		{
-			MethodName: "ConfirmOwner",
-			Handler:    _ControlPlane_ConfirmOwner_Handler,
-		},
-		{
-			MethodName: "Closing",
-			Handler:    _ControlPlane_Closing_Handler,
-		},
-	},
-	Streams:  []grpc.StreamDesc{},
-	Metadata: "control_plane.proto",
-}

proto/messages.proto

@@ -3,93 +3,16 @@ package messages;
 option go_package = ".;messages";
 
 message AddRequest {
-		int32 quantity = 1;
-		string sku = 2;
-		string country = 3;
-		optional string storeId = 4;
-}
-
-message SetCartRequest {
-		repeated AddRequest items = 1;
+		string Sku = 2;
 }
 
 message AddItem {
-		int64 item_id = 1;
-		int32 quantity = 2;
-		int64 price = 3;
-		int64 orgPrice = 9;
-		string sku = 4;
-		string name = 5;
-		string image = 6;
-		int32 stock = 7;
-		int32 tax = 8;
-		string brand = 13;
-		string category = 14;
-		string category2 = 15;
-		string category3 = 16;
-		string category4 = 17;
-		string category5 = 18;
-		string disclaimer = 10;
-		string articleType = 11;
-		string sellerId = 19;
-		string sellerName = 20;
-		string country = 21;
-		optional string outlet = 12;
-		optional string storeId = 22;
+		int32 Quantity = 2;
+		int64 Price = 3;
+		string Sku = 4;
+		string Name = 5;
+		string Image = 6;
 }
 
-message RemoveItem {
-		int64 Id = 1;
-}
 
-message ChangeQuantity {
-		int64 id = 1;
-		int32 quantity = 2;
-}
 
-message SetDelivery {
-		string provider = 1;
-		repeated int64 items = 2;
-		optional PickupPoint pickupPoint = 3;
-		string country = 4;
-		string zip = 5;
-		optional string address = 6;
-		optional string city = 7;
-}
-
-message SetPickupPoint {
-        int64 deliveryId = 1;
-        string id = 2;
-        optional string name = 3;
-        optional string address = 4;
-        optional string city = 5;
-        optional string zip = 6;
-        optional string country = 7;
-}
-
-message PickupPoint {
-        string id = 1;
-        optional string name = 2;
-        optional string address = 3;
-        optional string city = 4;
-        optional string zip = 5;
-        optional string country = 6;
-}
-
-message RemoveDelivery {
-		int64 id = 1;
-}
-
-message CreateCheckoutOrder {
-	string terms = 1;
-	string checkout = 2;
-	string confirmation = 3;
-	string push = 4;
-	string validation = 5;
-	string country = 6;
-}
-
-message OrderCreated {
-		string orderId = 1;
-		string status = 2;
-}

remote-grain-pool._go

@@ -1,67 +0,0 @@
-// package main
-
-// import "sync"
-
-// type RemoteGrainPool struct {
-// 	mu     sync.RWMutex
-// 	Host   string
-// 	grains map[CartId]*RemoteGrain
-// }
-
-// func NewRemoteGrainPool(addr string) *RemoteGrainPool {
-// 	return &RemoteGrainPool{
-// 		Host:   addr,
-// 		grains: make(map[CartId]*RemoteGrain),
-// 	}
-// }
-
-// func (p *RemoteGrainPool) findRemoteGrain(id CartId) *RemoteGrain {
-// 	p.mu.RLock()
-// 	grain, ok := p.grains[id]
-// 	p.mu.RUnlock()
-// 	if !ok {
-// 		return nil
-// 	}
-// 	return grain
-// }
-
-// func (p *RemoteGrainPool) findOrCreateGrain(id CartId) (*RemoteGrain, error) {
-// 	grain := p.findRemoteGrain(id)
-
-// 	if grain == nil {
-// 		grain, err := NewRemoteGrain(id, p.Host)
-// 		if err != nil {
-// 			return nil, err
-// 		}
-// 		p.mu.Lock()
-// 		p.grains[id] = grain
-// 		p.mu.Unlock()
-// 	}
-// 	return grain, nil
-// }
-
-// func (p *RemoteGrainPool) Delete(id CartId) {
-// 	p.mu.Lock()
-// 	delete(p.grains, id)
-// 	p.mu.Unlock()
-// }
-
-// func (p *RemoteGrainPool) Process(id CartId, messages ...Message) (*FrameWithPayload, error) {
-// 	var result *FrameWithPayload
-// 	grain, err := p.findOrCreateGrain(id)
-// 	if err != nil {
-// 		return nil, err
-// 	}
-// 	for _, message := range messages {
-// 		result, err = grain.HandleMessage(&message, false)
-// 	}
-// 	return result, err
-// }
-
-// func (p *RemoteGrainPool) Get(id CartId) (*FrameWithPayload, error) {
-// 	grain, err := p.findOrCreateGrain(id)
-// 	if err != nil {
-// 		return nil, err
-// 	}
-// 	return grain.GetCurrentState()
-// }

remote_grain_grpc.go

@@ -1,147 +0,0 @@
-package main
-
-import (
-	"bytes"
-	"context"
-	"fmt"
-	"log"
-	"time"
-
-	proto "git.tornberg.me/go-cart-actor/proto" // generated package name is 'messages'; aliased as proto for consistency
-	"google.golang.org/grpc"
-)
-
-// RemoteGrainGRPC is the gRPC-backed implementation of a remote grain.
-// It mirrors the previous RemoteGrain (TCP/frame based) while using the
-// new CartActor gRPC service. It implements the Grain interface so that
-// SyncedPool can remain largely unchanged when swapping transport layers.
-type RemoteGrainGRPC struct {
-	Id     CartId
-	Host   string
-	client proto.CartActorClient
-	// Optional: keep the underlying conn so higher-level code can close if needed
-	conn *grpc.ClientConn
-
-	// Per-call timeout settings (tunable)
-	mutateTimeout time.Duration
-	stateTimeout  time.Duration
-}
-
-// NewRemoteGrainGRPC constructs a remote grain adapter from an existing gRPC client.
-func NewRemoteGrainGRPC(id CartId, host string, client proto.CartActorClient) *RemoteGrainGRPC {
-	return &RemoteGrainGRPC{
-		Id:            id,
-		Host:          host,
-		client:        client,
-		mutateTimeout: 800 * time.Millisecond,
-		stateTimeout:  400 * time.Millisecond,
-	}
-}
-
-// NewRemoteGrainGRPCWithConn dials the target and creates the gRPC client.
-// target should be host:port (where the CartActor service is exposed).
-func NewRemoteGrainGRPCWithConn(id CartId, host string, target string, dialOpts ...grpc.DialOption) (*RemoteGrainGRPC, error) {
-	// NOTE: insecure for initial migration; should be replaced with TLS later.
-	baseOpts := []grpc.DialOption{grpc.WithInsecure(), grpc.WithBlock()}
-	baseOpts = append(baseOpts, dialOpts...)
-
-	ctx, cancel := context.WithTimeout(context.Background(), 5*time.Second)
-	defer cancel()
-
-	conn, err := grpc.DialContext(ctx, target, baseOpts...)
-	if err != nil {
-		return nil, err
-	}
-
-	client := proto.NewCartActorClient(conn)
-	return &RemoteGrainGRPC{
-		Id:            id,
-		Host:          host,
-		client:        client,
-		conn:          conn,
-		mutateTimeout: 800 * time.Millisecond,
-		stateTimeout:  400 * time.Millisecond,
-	}, nil
-}
-
-func (g *RemoteGrainGRPC) GetId() CartId {
-	return g.Id
-}
-
-// HandleMessage serializes the underlying mutation proto (without legacy message header)
-// and invokes the CartActor.Mutate RPC. It wraps the reply into a FrameWithPayload
-// for compatibility with existing higher-level code paths.
-func (g *RemoteGrainGRPC) HandleMessage(message *Message, isReplay bool) (*FrameWithPayload, error) {
-	if message == nil {
-		return nil, fmt.Errorf("nil message")
-	}
-	if isReplay {
-		// Remote replay not expected; ignore to keep parity with old implementation.
-		return nil, fmt.Errorf("replay not supported for remote grains")
-	}
-
-	handler, err := GetMessageHandler(message.Type)
-	if err != nil {
-		return nil, err
-	}
-
-	// Ensure timestamp set (legacy behavior)
-	if message.TimeStamp == nil {
-		ts := time.Now().Unix()
-		message.TimeStamp = &ts
-	}
-
-	// Marshal underlying proto payload only (no StorableMessageHeader)
-	var buf bytes.Buffer
-	err = handler.Write(message, &buf)
-	if err != nil {
-		return nil, fmt.Errorf("encode mutation payload: %w", err)
-	}
-
-	req := &proto.MutationRequest{
-		CartId:          g.Id.String(),
-		Type:            proto.MutationType(message.Type), // numeric mapping preserved
-		Payload:         buf.Bytes(),
-		ClientTimestamp: *message.TimeStamp,
-	}
-
-	ctx, cancel := context.WithTimeout(context.Background(), g.mutateTimeout)
-	defer cancel()
-
-	resp, err := g.client.Mutate(ctx, req)
-	if err != nil {
-		return nil, err
-	}
-
-	frame := MakeFrameWithPayload(RemoteHandleMutationReply, StatusCode(resp.StatusCode), resp.Payload)
-	return &frame, nil
-}
-
-// GetCurrentState calls CartActor.GetState and returns a FrameWithPayload
-// shaped like the legacy RemoteGetStateReply.
-func (g *RemoteGrainGRPC) GetCurrentState() (*FrameWithPayload, error) {
-	ctx, cancel := context.WithTimeout(context.Background(), g.stateTimeout)
-	defer cancel()
-
-	resp, err := g.client.GetState(ctx, &proto.StateRequest{
-		CartId: g.Id.String(),
-	})
-	if err != nil {
-		return nil, err
-	}
-	frame := MakeFrameWithPayload(RemoteGetStateReply, StatusCode(resp.StatusCode), resp.Payload)
-	return &frame, nil
-}
-
-// Close closes the underlying gRPC connection if this adapter created it.
-func (g *RemoteGrainGRPC) Close() error {
-	if g.conn != nil {
-		return g.conn.Close()
-	}
-	return nil
-}
-
-// Debug helper to log operations (optional).
-func (g *RemoteGrainGRPC) logf(format string, args ...interface{}) {
-	log.Printf("[remote-grain-grpc host=%s id=%s] %s", g.Host, g.Id.String(), fmt.Sprintf(format, args...))
-}

rpc-pool.go

@@ -0,0 +1,110 @@
+package main
+
+import (
+	"io"
+	"net"
+	"strings"
+)
+
+type RemoteGrainPool struct {
+	Hosts  []string
+	grains map[CartId]RemoteGrain
+}
+
+func (id CartId) String() string {
+	return strings.Trim(string(id[:]), "\x00")
+}
+
+func ToCartId(id string) CartId {
+	var result [16]byte
+	copy(result[:], []byte(id))
+	return result
+}
+
+type RemoteGrain struct {
+	client  net.Conn
+	Id      CartId
+	Address string
+}
+
+func NewRemoteGrain(id CartId, address string) *RemoteGrain {
+	return &RemoteGrain{
+		Id:      id,
+		Address: address,
+	}
+}
+
+func (g *RemoteGrain) Connect() error {
+	if g.client == nil {
+		client, err := net.Dial("tcp", g.Address)
+		if err != nil {
+			return err
+		}
+		g.client = client
+	}
+	return nil
+}
+
+func (g *RemoteGrain) HandleMessage(message *Message, isReplay bool) ([]byte, error) {
+
+	err := SendCartPacket(g.client, g.Id, RemoteHandleMessage, message.Write)
+	if err != nil {
+		return nil, err
+	}
+	_, data, err := ReceivePacket(g.client)
+	return data, err
+}
+
+func (g *RemoteGrain) GetId() CartId {
+	return g.Id
+}
+
+func (g *RemoteGrain) GetCurrentState() ([]byte, error) {
+
+	err := SendCartPacket(g.client, g.Id, RemoteGetState, func(w io.Writer) error {
+		return nil
+	})
+	if err != nil {
+		return nil, err
+	}
+	_, data, err := ReceivePacket(g.client)
+	return data, err
+}
+
+func NewRemoteGrainPool(addr ...string) *RemoteGrainPool {
+	return &RemoteGrainPool{
+		Hosts:  addr,
+		grains: make(map[CartId]RemoteGrain),
+	}
+}
+
+func (p *RemoteGrainPool) findRemoteGrain(id CartId) *RemoteGrain {
+	grain, ok := p.grains[id]
+	if !ok {
+		return nil
+	}
+	return &grain
+}
+
+func (p *RemoteGrainPool) Process(id CartId, messages ...Message) ([]byte, error) {
+	var result []byte
+	var err error
+	grain := p.findRemoteGrain(id)
+	if grain == nil {
+		grain = NewRemoteGrain(id, p.Hosts[0])
+		grain.Connect()
+		p.grains[id] = *grain
+	}
+	for _, message := range messages {
+		result, err = grain.HandleMessage(&message, false)
+	}
+	return result, err
+}
+
+func (p *RemoteGrainPool) Get(id CartId) ([]byte, error) {
+	grain := p.findRemoteGrain(id)
+	if grain == nil {
+		return nil, nil
+	}
+	return grain.GetCurrentState()
+}

rpc-server.go

@@ -0,0 +1,114 @@
+package main
+
+import (
+	"encoding/binary"
+	"encoding/json"
+	"fmt"
+	"io"
+	"net"
+)
+
+type GrainHandler struct {
+	listener net.Listener
+	pool     GrainPool
+}
+
+func (h *GrainHandler) GetState(id CartId, reply *Grain) error {
+	grain, err := h.pool.Get(id)
+	if err != nil {
+		return err
+	}
+	*reply = grain
+	return nil
+}
+
+func NewGrainHandler(pool GrainPool, listen string) (*GrainHandler, error) {
+	handler := &GrainHandler{
+		pool: pool,
+	}
+	l, err := net.Listen("tcp", listen)
+	handler.listener = l
+	return handler, err
+}
+
+func (h *GrainHandler) Serve() {
+	for {
+		// Accept incoming connections
+		conn, err := h.listener.Accept()
+		if err != nil {
+			fmt.Println("Error:", err)
+			continue
+		}
+
+		// Handle client connection in a goroutine
+		go h.handleClient(conn)
+	}
+}
+
+func (h *GrainHandler) handleClient(conn net.Conn) {
+
+	fmt.Println("Handling client connection")
+	defer conn.Close()
+
+	var packet CartPacket
+	for {
+
+		for {
+			err := binary.Read(conn, binary.LittleEndian, &packet)
+			if err != nil {
+				if err == io.EOF {
+					break
+				}
+				fmt.Println("Error reading packet:", err)
+			}
+			if packet.Version != 2 {
+				fmt.Printf("Unknown version %d", packet.Version)
+				break
+			}
+
+			switch packet.MessageType {
+			case RemoteHandleMessage:
+				fmt.Printf("Handling message\n")
+				var msg Message
+				err := MessageFromReader(conn, &msg)
+				if err != nil {
+					fmt.Println("Error reading message:", err)
+				}
+				fmt.Printf("Message: %s, %v\n", packet.Id.String(), msg)
+				grain, err := h.pool.Get(packet.Id)
+				if err != nil {
+					fmt.Println("Error getting grain:", err)
+				}
+				_, err = grain.HandleMessage(&msg, false)
+				if err != nil {
+					fmt.Println("Error handling message:", err)
+				}
+				SendPacket(conn, ResponseBody, func(w io.Writer) error {
+					data, err := json.Marshal(grain)
+					if err != nil {
+						return err
+					}
+					w.Write(data)
+					return nil
+				})
+			case RemoteGetState:
+
+				fmt.Printf("Package: %s %v\n", packet.Id.String(), packet)
+				grain, err := h.pool.Get(packet.Id)
+				if err != nil {
+					fmt.Println("Error getting grain:", err)
+				}
+				SendPacket(conn, ResponseBody, func(w io.Writer) error {
+					data, err := json.Marshal(grain)
+					if err != nil {
+						return err
+					}
+					w.Write(data)
+					return nil
+				})
+			}
+
+		}
+
+	}
+}

server-registry.go

@@ -0,0 +1,25 @@
+package main
+
+import "fmt"
+
+type Registry interface {
+	Register(address string, id string) error
+	Get(id string) (*string, error)
+}
+
+type MemoryRegistry struct {
+	registry map[string]string
+}
+
+func (r *MemoryRegistry) Register(address string, id string) error {
+	r.registry[id] = address
+	return nil
+}
+
+func (r *MemoryRegistry) Get(id string) (*string, error) {
+	addr, ok := r.registry[id]
+	if !ok {
+		return nil, fmt.Errorf("id not found")
+	}
+	return &addr, nil
+}

synced-pool.go

@@ -1,473 +0,0 @@
-package main
-
-import (
-	"context"
-	"fmt"
-	"log"
-	"sync"
-	"time"
-
-	proto "git.tornberg.me/go-cart-actor/proto"
-	"github.com/prometheus/client_golang/prometheus"
-	"github.com/prometheus/client_golang/prometheus/promauto"
-	"google.golang.org/grpc"
-	"k8s.io/apimachinery/pkg/watch"
-)
-
-// SyncedPool coordinates cart grain ownership across nodes using gRPC control plane
-// and cart actor services. Legacy frame / TCP code has been removed.
-//
-// Responsibilities:
-//   - Local grain access (delegates to GrainLocalPool)
-//   - Remote grain proxy management (RemoteGrainGRPC)
-//   - Cluster membership (AddRemote via discovery + negotiation)
-//   - Ownership acquisition (quorum via ConfirmOwner RPC)
-//   - Health/ping monitoring & remote removal
-//
-// Thread-safety: public methods that mutate internal maps lock p.mu (RWMutex).
-type SyncedPool struct {
-	Hostname string
-	local    *GrainLocalPool
-
-	mu sync.RWMutex
-
-	// Remote host state (gRPC only)
-	remoteHosts map[string]*RemoteHostGRPC // host -> remote host
-
-	// Remote grain proxies (by cart id)
-	remoteIndex map[CartId]Grain
-
-	// Discovery handler for re-adding hosts after failures
-	discardedHostHandler *DiscardedHostHandler
-
-	// Metrics / instrumentation dependencies already declared globally
-}
-
-// RemoteHostGRPC tracks a remote host's clients & health.
-type RemoteHostGRPC struct {
-	Host          string
-	Conn          *grpc.ClientConn
-	CartClient    proto.CartActorClient
-	ControlClient proto.ControlPlaneClient
-	MissedPings   int
-}
-
-func (r *RemoteHostGRPC) IsHealthy() bool {
-	return r.MissedPings < 3
-}
-
-var (
-	negotiationCount = promauto.NewCounter(prometheus.CounterOpts{
-		Name: "cart_remote_negotiation_total",
-		Help: "The total number of remote negotiations",
-	})
-	grainSyncCount = promauto.NewCounter(prometheus.CounterOpts{
-		Name: "cart_grain_sync_total",
-		Help: "The total number of grain owner changes",
-	})
-	connectedRemotes = promauto.NewGauge(prometheus.GaugeOpts{
-		Name: "cart_connected_remotes",
-		Help: "The number of connected remotes",
-	})
-	remoteLookupCount = promauto.NewCounter(prometheus.CounterOpts{
-		Name: "cart_remote_lookup_total",
-		Help: "The total number of remote lookups",
-	})
-)
-
-func NewSyncedPool(local *GrainLocalPool, hostname string, discovery Discovery) (*SyncedPool, error) {
-	p := &SyncedPool{
-		Hostname:             hostname,
-		local:                local,
-		remoteHosts:          make(map[string]*RemoteHostGRPC),
-		remoteIndex:          make(map[CartId]Grain),
-		discardedHostHandler: NewDiscardedHostHandler(1338),
-	}
-	p.discardedHostHandler.SetReconnectHandler(p.AddRemote)
-
-	if discovery != nil {
-		go func() {
-			time.Sleep(3 * time.Second) // allow gRPC server startup
-			log.Printf("Starting discovery watcher")
-			ch, err := discovery.Watch()
-			if err != nil {
-				log.Printf("Discovery error: %v", err)
-				return
-			}
-			for evt := range ch {
-				if evt.Host == "" {
-					continue
-				}
-				switch evt.Type {
-				case watch.Deleted:
-					if p.IsKnown(evt.Host) {
-						p.RemoveHost(evt.Host)
-					}
-				default:
-					if !p.IsKnown(evt.Host) {
-						log.Printf("Discovered host %s", evt.Host)
-						p.AddRemote(evt.Host)
-					}
-				}
-			}
-		}()
-	} else {
-		log.Printf("No discovery configured; expecting manual AddRemote or static host injection")
-	}
-
-	return p, nil
-}
-
-// ------------------------- Remote Host Management -----------------------------
-
-// AddRemote dials a remote host and initializes grain proxies.
-func (p *SyncedPool) AddRemote(host string) {
-	if host == "" || host == p.Hostname {
-		return
-	}
-
-	p.mu.Lock()
-	if _, exists := p.remoteHosts[host]; exists {
-		p.mu.Unlock()
-		return
-	}
-	p.mu.Unlock()
-
-	target := fmt.Sprintf("%s:1337", host)
-	ctx, cancel := context.WithTimeout(context.Background(), 5*time.Second)
-	defer cancel()
-	conn, err := grpc.DialContext(ctx, target, grpc.WithInsecure(), grpc.WithBlock())
-	if err != nil {
-		log.Printf("AddRemote: dial %s failed: %v", target, err)
-		return
-	}
-
-	cartClient := proto.NewCartActorClient(conn)
-	controlClient := proto.NewControlPlaneClient(conn)
-
-	// Health check (Ping) with limited retries
-	pings := 3
-	for pings > 0 {
-		ctxPing, cancelPing := context.WithTimeout(context.Background(), 1*time.Second)
-		_, pingErr := controlClient.Ping(ctxPing, &proto.Empty{})
-		cancelPing()
-		if pingErr == nil {
-			break
-		}
-		pings--
-		time.Sleep(200 * time.Millisecond)
-		if pings == 0 {
-			log.Printf("AddRemote: ping %s failed after retries: %v", host, pingErr)
-			conn.Close()
-			return
-		}
-	}
-
-	remote := &RemoteHostGRPC{
-		Host:          host,
-		Conn:          conn,
-		CartClient:    cartClient,
-		ControlClient: controlClient,
-		MissedPings:   0,
-	}
-
-	p.mu.Lock()
-	p.remoteHosts[host] = remote
-	p.mu.Unlock()
-	connectedRemotes.Set(float64(p.RemoteCount()))
-
-	log.Printf("Connected to remote host %s", host)
-
-	go p.pingLoop(remote)
-	go p.initializeRemote(remote)
-	go p.Negotiate()
-}
-
-// initializeRemote fetches remote cart ids and sets up remote grain proxies.
-func (p *SyncedPool) initializeRemote(remote *RemoteHostGRPC) {
-	ctx, cancel := context.WithTimeout(context.Background(), 3*time.Second)
-	defer cancel()
-	reply, err := remote.ControlClient.GetCartIds(ctx, &proto.Empty{})
-	if err != nil {
-		log.Printf("Init remote %s: GetCartIds error: %v", remote.Host, err)
-		return
-	}
-	count := 0
-	for _, idStr := range reply.CartIds {
-		if idStr == "" {
-			continue
-		}
-		p.SpawnRemoteGrain(ToCartId(idStr), remote.Host)
-		count++
-	}
-	log.Printf("Remote %s reported %d grains", remote.Host, count)
-}
-
-// RemoveHost removes remote host and its grains.
-func (p *SyncedPool) RemoveHost(host string) {
-	p.mu.Lock()
-	remote, exists := p.remoteHosts[host]
-	if exists {
-		delete(p.remoteHosts, host)
-	}
-	// remove grains pointing to host
-	for id, g := range p.remoteIndex {
-		if rg, ok := g.(*RemoteGrainGRPC); ok && rg.Host == host {
-			delete(p.remoteIndex, id)
-		}
-	}
-	p.mu.Unlock()
-
-	if exists {
-		remote.Conn.Close()
-	}
-	connectedRemotes.Set(float64(p.RemoteCount()))
-}
-
-// RemoteCount returns number of tracked remote hosts.
-func (p *SyncedPool) RemoteCount() int {
-	p.mu.RLock()
-	defer p.mu.RUnlock()
-	return len(p.remoteHosts)
-}
-
-func (p *SyncedPool) IsKnown(host string) bool {
-	if host == p.Hostname {
-		return true
-	}
-	p.mu.RLock()
-	defer p.mu.RUnlock()
-	_, ok := p.remoteHosts[host]
-	return ok
-}
-
-func (p *SyncedPool) ExcludeKnown(hosts []string) []string {
-	ret := make([]string, 0, len(hosts))
-	for _, h := range hosts {
-		if !p.IsKnown(h) {
-			ret = append(ret, h)
-		}
-	}
-	return ret
-}
-
-// ------------------------- Health / Ping -------------------------------------
-
-func (p *SyncedPool) pingLoop(remote *RemoteHostGRPC) {
-	ticker := time.NewTicker(3 * time.Second)
-	defer ticker.Stop()
-	for range ticker.C {
-		ctx, cancel := context.WithTimeout(context.Background(), 1*time.Second)
-		_, err := remote.ControlClient.Ping(ctx, &proto.Empty{})
-		cancel()
-		if err != nil {
-			remote.MissedPings++
-			log.Printf("Ping %s failed (%d)", remote.Host, remote.MissedPings)
-			if !remote.IsHealthy() {
-				log.Printf("Remote %s unhealthy, removing", remote.Host)
-				p.RemoveHost(remote.Host)
-				return
-			}
-			continue
-		}
-		remote.MissedPings = 0
-	}
-}
-
-func (p *SyncedPool) IsHealthy() bool {
-	p.mu.RLock()
-	defer p.mu.RUnlock()
-	for _, r := range p.remoteHosts {
-		if !r.IsHealthy() {
-			return false
-		}
-	}
-	return true
-}
-
-// ------------------------- Negotiation ---------------------------------------
-
-func (p *SyncedPool) Negotiate() {
-	negotiationCount.Inc()
-
-	p.mu.RLock()
-	hosts := make([]string, 0, len(p.remoteHosts)+1)
-	hosts = append(hosts, p.Hostname)
-	for h := range p.remoteHosts {
-		hosts = append(hosts, h)
-	}
-	remotes := make([]*RemoteHostGRPC, 0, len(p.remoteHosts))
-	for _, r := range p.remoteHosts {
-		remotes = append(remotes, r)
-	}
-	p.mu.RUnlock()
-
-	for _, r := range remotes {
-		ctx, cancel := context.WithTimeout(context.Background(), 2*time.Second)
-		reply, err := r.ControlClient.Negotiate(ctx, &proto.NegotiateRequest{KnownHosts: hosts})
-		cancel()
-		if err != nil {
-			log.Printf("Negotiate with %s failed: %v", r.Host, err)
-			continue
-		}
-		for _, h := range reply.Hosts {
-			if !p.IsKnown(h) {
-				p.AddRemote(h)
-			}
-		}
-	}
-}
-
-// ------------------------- Grain Management ----------------------------------
-
-// RemoveRemoteGrain removes a remote grain mapping.
-func (p *SyncedPool) RemoveRemoteGrain(id CartId) {
-	p.mu.Lock()
-	delete(p.remoteIndex, id)
-	p.mu.Unlock()
-}
-
-// SpawnRemoteGrain creates/updates a remote grain proxy for a given host.
-func (p *SyncedPool) SpawnRemoteGrain(id CartId, host string) {
-	if id.String() == "" {
-		return
-	}
-	p.mu.Lock()
-	// If local grain exists, remove it (ownership changed)
-	if g, ok := p.local.grains[id]; ok && g != nil {
-		delete(p.local.grains, id)
-	}
-	remoteHost, ok := p.remoteHosts[host]
-	if !ok {
-		p.mu.Unlock()
-		log.Printf("SpawnRemoteGrain: host %s unknown (id=%s), attempting AddRemote", host, id)
-		go p.AddRemote(host)
-		return
-	}
-	rg := NewRemoteGrainGRPC(id, host, remoteHost.CartClient)
-	p.remoteIndex[id] = rg
-	p.mu.Unlock()
-}
-
-// GetHealthyRemotes returns a copy slice of healthy remote hosts.
-func (p *SyncedPool) GetHealthyRemotes() []*RemoteHostGRPC {
-	p.mu.RLock()
-	defer p.mu.RUnlock()
-	ret := make([]*RemoteHostGRPC, 0, len(p.remoteHosts))
-	for _, r := range p.remoteHosts {
-		if r.IsHealthy() {
-			ret = append(ret, r)
-		}
-	}
-	return ret
-}
-
-// RequestOwnership attempts to become owner of a cart, requiring quorum.
-// On success local grain is (or will be) created; peers spawn remote proxies.
-func (p *SyncedPool) RequestOwnership(id CartId) error {
-	ok := 0
-	all := 0
-	remotes := p.GetHealthyRemotes()
-	for _, r := range remotes {
-		ctx, cancel := context.WithTimeout(context.Background(), 800*time.Millisecond)
-		reply, err := r.ControlClient.ConfirmOwner(ctx, &proto.OwnerChangeRequest{
-			CartId:  id.String(),
-			NewHost: p.Hostname,
-		})
-		cancel()
-		all++
-		if err != nil || reply == nil || !reply.Accepted {
-			log.Printf("ConfirmOwner failure from %s for %s: %v (reply=%v)", r.Host, id, err, reply)
-			continue
-		}
-		ok++
-	}
-
-	// Quorum rule mirrors legacy:
-	//  - If fewer than 3 total, require all.
-	//  - Else require majority (ok >= all/2).
-	if (all < 3 && ok < all) || ok < (all/2) {
-		p.removeLocalGrain(id)
-		return fmt.Errorf("quorum not reached (ok=%d all=%d)", ok, all)
-	}
-	grainSyncCount.Inc()
-	return nil
-}
-
-func (p *SyncedPool) removeLocalGrain(id CartId) {
-	p.mu.Lock()
-	delete(p.local.grains, id)
-	p.mu.Unlock()
-}
-
-// getGrain returns a local or remote grain; if absent, attempts ownership.
-func (p *SyncedPool) getGrain(id CartId) (Grain, error) {
-	p.mu.RLock()
-	localGrain, isLocal := p.local.grains[id]
-	remoteGrain, isRemote := p.remoteIndex[id]
-	p.mu.RUnlock()
-
-	if isLocal && localGrain != nil {
-		return localGrain, nil
-	}
-	if isRemote {
-		remoteLookupCount.Inc()
-		return remoteGrain, nil
-	}
-
-	// Attempt to claim ownership (async semantics preserved)
-	go p.RequestOwnership(id)
-
-	// Create local grain (lazy spawn) - may be rolled back by quorum failure
-	grain, err := p.local.GetGrain(id)
-	if err != nil {
-		return nil, err
-	}
-	return grain, nil
-}
-
-// Process applies mutation(s) to a grain (local or remote).
-func (p *SyncedPool) Process(id CartId, messages ...Message) (*FrameWithPayload, error) {
-	grain, err := p.getGrain(id)
-	if err != nil {
-		return nil, err
-	}
-	var res *FrameWithPayload
-	for _, m := range messages {
-		res, err = grain.HandleMessage(&m, false)
-		if err != nil {
-			return nil, err
-		}
-	}
-	return res, nil
-}
-
-// Get returns current state of a grain (local or remote).
-func (p *SyncedPool) Get(id CartId) (*FrameWithPayload, error) {
-	grain, err := p.getGrain(id)
-	if err != nil {
-		return nil, err
-	}
-	return grain.GetCurrentState()
-}
-
-// Close notifies remotes this host is terminating.
-func (p *SyncedPool) Close() {
-	p.mu.RLock()
-	remotes := make([]*RemoteHostGRPC, 0, len(p.remoteHosts))
-	for _, r := range p.remoteHosts {
-		remotes = append(remotes, r)
-	}
-	p.mu.RUnlock()
-
-	for _, r := range remotes {
-		go func(rh *RemoteHostGRPC) {
-			ctx, cancel := context.WithTimeout(context.Background(), 1*time.Second)
-			_, err := rh.ControlClient.Closing(ctx, &proto.ClosingNotice{Host: p.Hostname})
-			cancel()
-			if err != nil {
-				log.Printf("Close notify to %s failed: %v", rh.Host, err)
-			}
-		}(r)
-	}
-}

tcp-connection_test.go

@@ -1,8 +0,0 @@
-/*
-Legacy TCP networking (GenericListener / Frame protocol) has been removed
-as part of the gRPC migration. This file intentionally contains no tests.
-
-Keeping an empty Go file (with a package declaration) ensures the old
-tcp-connection test target no longer runs without causing build issues.
-*/
-package main