Interservice communication

docker-compose.yml

@@ -18,11 +18,13 @@ services:
             context: ./machines
             dockerfile: Dockerfile
         environment:
+            - APPPORT=3000
             - DBHOST=db
             - DBPORT=5432
             - DBNAME=komponiranje
             - DBUSER=pero
             - DBPASSWORD=pero.000
+            - PRODUCTSAPPURL=http://products-service:3000
         # ports:
         #     - 3000:3000
         depends_on:
@@ -33,6 +35,7 @@ services:
             context: ./products
             dockerfile: Dockerfile
         environment:
+            - APPPORT=3000
             - DBHOST=db
             - DBPORT=5432
             - DBNAME=komponiranje

machines/app/api/router.go

@@ -2,6 +2,7 @@ package api
 
 import (
 	"fmt"
+	"io"
 	"machines/app/cfg"
 	"machines/app/db"
 	"net/http"
@@ -56,6 +57,39 @@ func handleGetMachine(dbConn *gorm.DB) gin.HandlerFunc {
 
 func handleGetMachineProducts(dbConn *gorm.DB) gin.HandlerFunc {
 	return func(c *gin.Context) {
+		machineId, err := strconv.Atoi(c.Param("machineId"))
+		if err != nil {
+			raiseBadRequestError(c, "Invalid machineId parameter")
+			return
+		}
+
+		machine, err := db.GetMachine(dbConn, machineId)
+		if err != nil {
+			raiseNotFoundError(c, "Machine not found")
+			return
+		}
+
+		url := fmt.Sprintf("%s/products?machineId=%d", cfg.Config.ProductsAppUrl, machine.Id)
+		resp, err := http.Get(url)
+		if err != nil {
+			fmt.Println(err.Error())
+			raiseInternalError(c, err.Error())
+			return
+		}
+
+		if resp.Body != nil {
+			defer resp.Body.Close()
+		}
+
+		body, err := io.ReadAll(resp.Body)
+		if err != nil {
+			fmt.Println(err.Error())
+			raiseInternalError(c, err.Error())
+			return
+		}
+
+		c.Header("Content-Type", "application/json; charset=utf-8")
+		c.Writer.WriteString(string(body))
 	}
 }
 

machines/app/cfg/config.go

@@ -12,8 +12,7 @@ type configStruct struct {
 	DbName         string `default:"komponiranje"`
 	DbUser         string `default:"pero"`
 	DbPassword     string `default:"pero.000"`
-	ProductsAppHost string `default:"localhost"`
+	ProductsAppUrl string `default:"http://localhost:3001"`
-	ProductsAppPort int    `default:"3001"`
 }
 
 const ENV_PREFIX = ""