sticky sessions

deployment.yaml

@@ -67,6 +67,10 @@ 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-session"
+    nginx.ingress.kubernetes.io/session-cookie-expires: "172800"
+    nginx.ingress.kubernetes.io/session-cookie-max-age: "172800"
     nginx.ingress.kubernetes.io/proxy-body-size: 16m
 spec:
   ingressClassName: nginx

main.go

@@ -1,6 +1,7 @@
 package main
 
 import (
+	"fmt"
 	"log"
 	"net/http"
 	"os"
@@ -110,18 +111,21 @@ func main() {
 		storage: storage,
 	}
 
-	rpcHandler, err := NewGrainHandler(app.pool, "localhost:1337")
+	syncedPool := NewSyncedPool(app.pool)
+
+	rpcHandler, err := NewGrainHandler(app.pool, ":1337")
 	if err != nil {
 		log.Fatalf("Error creating handler: %v\n", err)
 	}
 	go rpcHandler.Serve()
 
-	remotePool := NewRemoteGrainPool("localhost:1337")
-	remoteServer := NewPoolServer(remotePool)
-	localServer := NewPoolServer(app.pool)
+	syncedServer := NewPoolServer(syncedPool)
 	mux := http.NewServeMux()
-	mux.Handle("/remote/", http.StripPrefix("/remote", remoteServer.Serve()))
-	mux.Handle("/local/", http.StripPrefix("/local", localServer.Serve()))
+	mux.Handle("/api/", http.StripPrefix("/api", syncedServer.Serve()))
+	mux.HandleFunc("GET /add/remote/{host}", func(w http.ResponseWriter, r *http.Request) {
+		remotePool := NewRemoteGrainPool(fmt.Sprintf("%s:1337", r.PathValue("host")))
+		syncedPool.AddRemote(remotePool)
+	})
 	mux.HandleFunc("GET /save", app.HandleSave)
 	http.ListenAndServe(":8080", mux)
 

synced-pool.go

@@ -2,19 +2,19 @@ package main
 
 type SyncedPool struct {
 	local       *GrainLocalPool
-	remotes     []RemoteGrainPool
+	remotes     []*RemoteGrainPool
 	remoteIndex map[CartId]*RemoteGrainPool
 }
 
 func NewSyncedPool(local *GrainLocalPool) *SyncedPool {
 	return &SyncedPool{
 		local:       local,
-		remotes:     make([]RemoteGrainPool, 0),
+		remotes:     make([]*RemoteGrainPool, 0),
 		remoteIndex: make(map[CartId]*RemoteGrainPool),
 	}
 }
 
-func (p *SyncedPool) AddRemote(remote RemoteGrainPool) {
+func (p *SyncedPool) AddRemote(remote *RemoteGrainPool) {
 	p.remotes = append(p.remotes, remote)
 	// get all available grains from remote, and start syncing
 }