Add rpc listener to logger service

logger-service/cmd/api/main.go

@@ -5,7 +5,9 @@ import (
 	"fmt"
 	"log"
 	"logger/data"
+	"net"
 	"net/http"
+	"net/rpc"
 	"time"
 
 	"go.mongodb.org/mongo-driver/bson"
@@ -49,6 +51,14 @@ func main() {
 		Models: data.New(client),
 	}
 
+	// Register the RPC server
+	err = rpc.Register(new(RPCServer))
+	if err != nil {
+		panic(err)
+	}
+
+	go app.rpcListen()
+
 	// start web server
 	log.Println("Starting service on port", webPort)
 	app.serve()
@@ -88,3 +98,20 @@ func connectToMongo() (*mongo.Client, error) {
 
 	return client, nil
 }
+
+func (app *Config) rpcListen() error {
+	log.Println("Starting RPC server on port ", rpcPort)
+	listen, err := net.Listen("tcp", fmt.Sprintf("0.0.0.0:%s", rpcPort))
+	if err != nil {
+		return err
+	}
+
+	defer listen.Close()
+	for {
+		rpcConn, err := listen.Accept()
+		if err != nil {
+			continue
+		}
+		go rpc.ServeConn(rpcConn)
+	}
+}

logger-service/cmd/api/rpc.go

@@ -0,0 +1,32 @@
+package main
+
+import (
+	"context"
+	"log"
+	"logger/data"
+	"time"
+)
+
+type RPCServer struct{}
+
+type RPCPayload struct {
+	Name string
+	Data string
+}
+
+func (r *RPCServer) LogInfo(payload RPCPayload, resp *string) error {
+	collection := client.Database("logs").Collection("logs")
+	_, err := collection.InsertOne(context.TODO(), data.LogEntry{
+		Name:      payload.Name,
+		Data:      payload.Data,
+		CreatedAt: time.Now(),
+	})
+	if err != nil {
+		log.Println("error writing to mongo", err)
+		return err
+	}
+
+	*resp = "Processed payload via RPC:" + payload.Name
+
+	return nil
+}