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protobuf

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This commit is contained in:
matst80
2024-11-08 08:37:12 +01:00
parent ae421674d2
commit 4cc41bcec6
9 changed files with 568 additions and 44 deletions
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131
cart-grain.go
View File

@@ -1,25 +1,102 @@
package main
import (
"bufio"
"bytes"
"encoding/binary"
"encoding/json"
"fmt"
"io"
"log"
"net/http"
"time"
"git.tornberg.me/go-cart-actor/git.tornberg.me/go-cart-actor/messages"
"github.com/matst80/slask-finder/pkg/index"
"google.golang.org/protobuf/proto"
)
type StorableMessage interface {
GetBytes() ([]byte, error)
FromReader(io.Reader, *Message) error
}
type Message struct {
Type uint64
TimeStamp *int64
Type string
Content interface{}
}
func (m Message) GetBytes() ([]byte, error) {
var b bytes.Buffer
var err error
w := bufio.NewWriter(&b)
bytes := make([]byte, 8)
binary.LittleEndian.PutUint64(bytes, m.Type)
w.Write(bytes)
binary.LittleEndian.PutUint64(bytes, uint64(*m.TimeStamp))
w.Write(bytes)
var messageBytes []byte
if m.Type == 1 {
messageBytes, err = proto.Marshal(m.Content.(*messages.AddRequest))
} else if m.Type == 2 {
messageBytes, err = proto.Marshal(m.Content.(*messages.AddItem))
} else {
return nil, fmt.Errorf("unknown message type")
}
if err != nil {
return nil, err
}
binary.LittleEndian.PutUint64(bytes, uint64(len(messageBytes)))
w.Write(bytes)
w.Write(messageBytes)
w.Flush()
return b.Bytes(), nil
}
func (i Message) FromReader(reader io.Reader, m *Message) error {
bytes := make([]byte, 8)
if _, err := reader.Read(bytes); err != nil {
return err
}
m.Type = binary.LittleEndian.Uint64(bytes)
if _, err := reader.Read(bytes); err != nil {
return err
}
timestamp := int64(binary.LittleEndian.Uint64(bytes))
m.TimeStamp = &timestamp
if _, err := reader.Read(bytes); err != nil {
return err
}
messageBytes := make([]byte, binary.LittleEndian.Uint64(bytes))
if _, err := reader.Read(messageBytes); err != nil {
return err
}
var err error
if m.Type == 1 {
msg := &messages.AddRequest{}
err = proto.Unmarshal(messageBytes, msg)
m.Content = msg
} else if m.Type == 2 {
msg := &messages.AddItem{}
err = proto.Unmarshal(messageBytes, msg)
m.Content = msg
} else {
return fmt.Errorf("unknown message type")
}
if err != nil {
return err
}
return nil
}
type CartItem struct {
Sku string `json:"sku"`
Name string `json:"name"`
Price int `json:"price"`
Price int64 `json:"price"`
Image string `json:"image"`
}
@@ -27,14 +104,14 @@ type CartGrain struct {
storageMessages []Message
Id string `json:"id"`
Items []CartItem `json:"items"`
TotalPrice int `json:"totalPrice"`
TotalPrice int64 `json:"totalPrice"`
}
type Grain interface {
GetId() string
GetLastChange() int64
HandleMessage(message *Message, isReplay bool, reply *CartGrain) error
GetStorageMessage(since int64) []Message
GetStorageMessage(since int64) []StorableMessage
}
func (c *CartGrain) GetId() string {
@@ -48,7 +125,7 @@ func (c *CartGrain) GetLastChange() int64 {
return *c.storageMessages[len(c.storageMessages)-1].TimeStamp
}
func getItemData(sku string) (*CartItem, error) {
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
@@ -75,11 +152,12 @@ func getItemData(sku string) (*CartItem, error) {
}
}
}
return &CartItem{
Sku: item.Sku,
Name: item.Title,
Price: price,
Image: item.Img,
return &messages.AddItem{
Quantity: 1,
Price: int64(price),
Sku: sku,
Name: item.Title,
Image: item.Img,
}, nil
}
@@ -89,16 +167,14 @@ func (c *CartGrain) AddItem(sku string, reply *CartGrain) error {
return err
}
return c.HandleMessage(&Message{
Type: "append",
Content: *cartItem,
Type: 2,
Content: cartItem,
}, false, reply)
}
func (c *CartGrain) GetStorageMessage(since int64) []Message {
if since == 0 {
return c.storageMessages
}
ret := make([]Message, 0)
func (c *CartGrain) GetStorageMessage(since int64) []StorableMessage {
ret := make([]StorableMessage, 0)
for _, message := range c.storageMessages {
if *message.TimeStamp > since {
ret = append(ret, message)
@@ -108,27 +184,32 @@ func (c *CartGrain) GetStorageMessage(since int64) []Message {
}
func (c *CartGrain) HandleMessage(message *Message, isReplay bool, reply *CartGrain) error {
log.Printf("Handling message %s", message.Type)
log.Printf("Handling message %d", message.Type)
if message.TimeStamp == nil {
now := time.Now().Unix()
message.TimeStamp = &now
}
var err error
switch message.Type {
case "add":
sku, ok := message.Content.(string)
case 1:
msg, ok := message.Content.(*messages.AddRequest)
if !ok {
err = fmt.Errorf("invalid content type")
} else {
return c.AddItem(sku, reply)
return c.AddItem(msg.Sku, reply)
}
case "append":
item, ok := message.Content.(CartItem)
case 2:
msg, ok := message.Content.(*messages.AddItem)
if !ok {
err = fmt.Errorf("invalid content type")
} else {
c.Items = append(c.Items, item)
c.TotalPrice += item.Price
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")

BIN
data/1.prot Normal file
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Binary file not shown.

1
data/state.json Normal file
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@@ -0,0 +1 @@
{"1":1731051371}

1
data/state.json.bak Normal file
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@@ -0,0 +1 @@
{"1":1731050604}

31
disk-storage.go
View File

@@ -1,7 +1,6 @@
package main
import (
"encoding/gob"
"encoding/json"
"errors"
"fmt"
@@ -25,7 +24,7 @@ func NewDiskStorage(stateFile string) (*DiskStorage, error) {
return ret, err
}
func saveMessages(messages []Message, id string) error {
func saveMessages(messages []StorableMessage, id string) error {
log.Printf("%d messages to save for %s", len(messages), id)
if len(messages) == 0 {
return nil
@@ -38,17 +37,19 @@ func saveMessages(messages []Message, id string) error {
return err
}
defer file.Close()
// z := gzip.NewWriter(file)
// defer z.Close()
enc := gob.NewEncoder(file)
for _, m := range messages {
err = enc.Encode(m)
b, err := m.GetBytes()
if err != nil {
return err
}
file.Write(b)
}
return err
}
func getCartPath(id string) string {
return fmt.Sprintf("data/%s.gob", id)
return fmt.Sprintf("data/%s.prot", id)
}
func loadMessages(grain Grain, id string) error {
@@ -62,21 +63,17 @@ func loadMessages(grain Grain, id string) error {
return err
}
defer file.Close()
// z, err := gzip.NewReader(file)
// if err != nil {
// return err
// }
// defer z.Close()
var reply CartGrain
decoder := gob.NewDecoder(file)
for err == nil {
var message Message
err = decoder.Decode(&message)
if err != nil {
grain.HandleMessage(&message, true, &reply)
msg := &Message{}
err = msg.FromReader(file, msg)
if err == nil {
grain.HandleMessage(msg, true, &reply)
}
}
if err.Error() == "EOF" {
return nil
}

212
git.tornberg.me/go-cart-actor/add.pb.go Normal file
View File

@@ -0,0 +1,212 @@
// Code generated by protoc-gen-go. DO NOT EDIT.
// versions:
// protoc-gen-go v1.35.1
// protoc v5.28.2
// source: add.proto
package go_cart_actor
import (
protoreflect "google.golang.org/protobuf/reflect/protoreflect"
protoimpl "google.golang.org/protobuf/runtime/protoimpl"
reflect "reflect"
sync "sync"
)
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)
)
type AddRequest struct {
state protoimpl.MessageState
sizeCache protoimpl.SizeCache
unknownFields protoimpl.UnknownFields
Sku string `protobuf:"bytes,2,opt,name=Sku,proto3" json:"Sku,omitempty"`
}
func (x *AddRequest) Reset() {
*x = AddRequest{}
mi := &file_add_proto_msgTypes[0]
ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
ms.StoreMessageInfo(mi)
}
func (x *AddRequest) String() string {
return protoimpl.X.MessageStringOf(x)
}
func (*AddRequest) ProtoMessage() {}
func (x *AddRequest) ProtoReflect() protoreflect.Message {
mi := &file_add_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 AddRequest.ProtoReflect.Descriptor instead.
func (*AddRequest) Descriptor() ([]byte, []int) {
return file_add_proto_rawDescGZIP(), []int{0}
}
func (x *AddRequest) GetSku() string {
if x != nil {
return x.Sku
}
return ""
}
type AddItem struct {
state protoimpl.MessageState
sizeCache protoimpl.SizeCache
unknownFields protoimpl.UnknownFields
Quantity int32 `protobuf:"varint,2,opt,name=Quantity,proto3" json:"Quantity,omitempty"`
Price int64 `protobuf:"varint,3,opt,name=Price,proto3" json:"Price,omitempty"`
Sku string `protobuf:"bytes,4,opt,name=Sku,proto3" json:"Sku,omitempty"`
Name string `protobuf:"bytes,5,opt,name=Name,proto3" json:"Name,omitempty"`
Image string `protobuf:"bytes,6,opt,name=Image,proto3" json:"Image,omitempty"`
}
func (x *AddItem) Reset() {
*x = AddItem{}
mi := &file_add_proto_msgTypes[1]
ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
ms.StoreMessageInfo(mi)
}
func (x *AddItem) String() string {
return protoimpl.X.MessageStringOf(x)
}
func (*AddItem) ProtoMessage() {}
func (x *AddItem) ProtoReflect() protoreflect.Message {
mi := &file_add_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 AddItem.ProtoReflect.Descriptor instead.
func (*AddItem) Descriptor() ([]byte, []int) {
return file_add_proto_rawDescGZIP(), []int{1}
}
func (x *AddItem) GetQuantity() int32 {
if x != nil {
return x.Quantity
}
return 0
}
func (x *AddItem) GetPrice() int64 {
if x != nil {
return x.Price
}
return 0
}
func (x *AddItem) GetSku() string {
if x != nil {
return x.Sku
}
return ""
}
func (x *AddItem) GetName() string {
if x != nil {
return x.Name
}
return ""
}
func (x *AddItem) GetImage() string {
if x != nil {
return x.Image
}
return ""
}
var File_add_proto protoreflect.FileDescriptor
var file_add_proto_rawDesc = []byte{
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}
var (
file_add_proto_rawDescOnce sync.Once
file_add_proto_rawDescData = file_add_proto_rawDesc
)
func file_add_proto_rawDescGZIP() []byte {
file_add_proto_rawDescOnce.Do(func() {
file_add_proto_rawDescData = protoimpl.X.CompressGZIP(file_add_proto_rawDescData)
})
return file_add_proto_rawDescData
}
var file_add_proto_msgTypes = make([]protoimpl.MessageInfo, 2)
var file_add_proto_goTypes = []any{
(*AddRequest)(nil), // 0: messages.AddRequest
(*AddItem)(nil), // 1: messages.AddItem
}
var file_add_proto_depIdxs = []int32{
0, // [0:0] is the sub-list for method output_type
0, // [0:0] 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_add_proto_init() }
func file_add_proto_init() {
if File_add_proto != nil {
return
}
type x struct{}
out := protoimpl.TypeBuilder{
File: protoimpl.DescBuilder{
GoPackagePath: reflect.TypeOf(x{}).PkgPath(),
RawDescriptor: file_add_proto_rawDesc,
NumEnums: 0,
NumMessages: 2,
NumExtensions: 0,
NumServices: 0,
},
GoTypes: file_add_proto_goTypes,
DependencyIndexes: file_add_proto_depIdxs,
MessageInfos: file_add_proto_msgTypes,
}.Build()
File_add_proto = out.File
file_add_proto_rawDesc = nil
file_add_proto_goTypes = nil
file_add_proto_depIdxs = nil
}

212
git.tornberg.me/go-cart-actor/messages/add.pb.go Normal file
View File

@@ -0,0 +1,212 @@
// Code generated by protoc-gen-go. DO NOT EDIT.
// versions:
// protoc-gen-go v1.35.1
// protoc v5.28.2
// source: add.proto
package messages
import (
protoreflect "google.golang.org/protobuf/reflect/protoreflect"
protoimpl "google.golang.org/protobuf/runtime/protoimpl"
reflect "reflect"
sync "sync"
)
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)
)
type AddRequest struct {
state protoimpl.MessageState
sizeCache protoimpl.SizeCache
unknownFields protoimpl.UnknownFields
Sku string `protobuf:"bytes,2,opt,name=Sku,proto3" json:"Sku,omitempty"`
}
func (x *AddRequest) Reset() {
*x = AddRequest{}
mi := &file_add_proto_msgTypes[0]
ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
ms.StoreMessageInfo(mi)
}
func (x *AddRequest) String() string {
return protoimpl.X.MessageStringOf(x)
}
func (*AddRequest) ProtoMessage() {}
func (x *AddRequest) ProtoReflect() protoreflect.Message {
mi := &file_add_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 AddRequest.ProtoReflect.Descriptor instead.
func (*AddRequest) Descriptor() ([]byte, []int) {
return file_add_proto_rawDescGZIP(), []int{0}
}
func (x *AddRequest) GetSku() string {
if x != nil {
return x.Sku
}
return ""
}
type AddItem struct {
state protoimpl.MessageState
sizeCache protoimpl.SizeCache
unknownFields protoimpl.UnknownFields
Quantity int32 `protobuf:"varint,2,opt,name=Quantity,proto3" json:"Quantity,omitempty"`
Price int64 `protobuf:"varint,3,opt,name=Price,proto3" json:"Price,omitempty"`
Sku string `protobuf:"bytes,4,opt,name=Sku,proto3" json:"Sku,omitempty"`
Name string `protobuf:"bytes,5,opt,name=Name,proto3" json:"Name,omitempty"`
Image string `protobuf:"bytes,6,opt,name=Image,proto3" json:"Image,omitempty"`
}
func (x *AddItem) Reset() {
*x = AddItem{}
mi := &file_add_proto_msgTypes[1]
ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
ms.StoreMessageInfo(mi)
}
func (x *AddItem) String() string {
return protoimpl.X.MessageStringOf(x)
}
func (*AddItem) ProtoMessage() {}
func (x *AddItem) ProtoReflect() protoreflect.Message {
mi := &file_add_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 AddItem.ProtoReflect.Descriptor instead.
func (*AddItem) Descriptor() ([]byte, []int) {
return file_add_proto_rawDescGZIP(), []int{1}
}
func (x *AddItem) GetQuantity() int32 {
if x != nil {
return x.Quantity
}
return 0
}
func (x *AddItem) GetPrice() int64 {
if x != nil {
return x.Price
}
return 0
}
func (x *AddItem) GetSku() string {
if x != nil {
return x.Sku
}
return ""
}
func (x *AddItem) GetName() string {
if x != nil {
return x.Name
}
return ""
}
func (x *AddItem) GetImage() string {
if x != nil {
return x.Image
}
return ""
}
var File_add_proto protoreflect.FileDescriptor
var file_add_proto_rawDesc = []byte{
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}
var (
file_add_proto_rawDescOnce sync.Once
file_add_proto_rawDescData = file_add_proto_rawDesc
)
func file_add_proto_rawDescGZIP() []byte {
file_add_proto_rawDescOnce.Do(func() {
file_add_proto_rawDescData = protoimpl.X.CompressGZIP(file_add_proto_rawDescData)
})
return file_add_proto_rawDescData
}
var file_add_proto_msgTypes = make([]protoimpl.MessageInfo, 2)
var file_add_proto_goTypes = []any{
(*AddRequest)(nil), // 0: messages.AddRequest
(*AddItem)(nil), // 1: messages.AddItem
}
var file_add_proto_depIdxs = []int32{
0, // [0:0] is the sub-list for method output_type
0, // [0:0] 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_add_proto_init() }
func file_add_proto_init() {
if File_add_proto != nil {
return
}
type x struct{}
out := protoimpl.TypeBuilder{
File: protoimpl.DescBuilder{
GoPackagePath: reflect.TypeOf(x{}).PkgPath(),
RawDescriptor: file_add_proto_rawDesc,
NumEnums: 0,
NumMessages: 2,
NumExtensions: 0,
NumServices: 0,
},
GoTypes: file_add_proto_goTypes,
DependencyIndexes: file_add_proto_depIdxs,
MessageInfos: file_add_proto_msgTypes,
}.Build()
File_add_proto = out.File
file_add_proto_rawDesc = nil
file_add_proto_goTypes = nil
file_add_proto_depIdxs = nil
}

6
main.go
View File

@@ -7,6 +7,8 @@ import (
"net/http"
"os"
"time"
"git.tornberg.me/go-cart-actor/git.tornberg.me/go-cart-actor/messages"
)
func spawn(id string) Grain {
@@ -56,8 +58,8 @@ func (a *App) HandleAddSku(w http.ResponseWriter, r *http.Request) {
return
}
message := &Message{
Type: "add",
Content: sku,
Type: 1,
Content: &messages.AddRequest{Sku: sku},
}
var reply CartGrain
err = grain.HandleMessage(message, false, &reply)

18
messages/add.proto Normal file
View File

@@ -0,0 +1,18 @@
syntax = "proto3";
package messages;
option go_package = "git.tornberg.me/go-cart-actor/messages";
message AddRequest {
string Sku = 2;
}
message AddItem {
int32 Quantity = 2;
int64 Price = 3;
string Sku = 4;
string Name = 5;
string Image = 6;
}