Update api-server to use env vars for connecting with grpc keygen server

cmd/keygen/main.go

@@ -10,7 +10,7 @@ import (
 )
 
 func main() {
-	port, err := strconv.Atoi(env.GetEnv("API_PORT", "8081"))
+	port, err := strconv.Atoi(env.GetEnv("API_PORT", "8080"))
 	if err != nil {
 		log.Fatalf("error listening port: %v, err: %v", port, err)
 	}

internal/api-server/server.go

@@ -10,6 +10,7 @@ import (
 
 	pb "fastbin/api/keygen"
 
+	"fastbin/internal/pkg/env"
 	paste "fastbin/internal/pkg/paste"
 
 	"github.com/gin-gonic/gin"
@@ -106,7 +107,7 @@ func (as *APIServer) write(gc *gin.Context) {
 }
 
 func (as *APIServer) try_write(data string) (string, error) {
-	grpcServerURL := "localhost:8081"
+	grpcServerURL := env.GetEnv("KEYGEN_HOST", "localhost") + ":" + env.GetEnv("KEYGEN_PORT", "8080")
 	conn, err := grpc.NewClient(grpcServerURL, grpc.WithTransportCredentials(insecure.NewCredentials()))
 	if err != nil {
 		return "", err

syntax.env

@@ -1,7 +1,13 @@
+WEB_PORT=8082
+
 API_PORT=8080
-WEB_PORT=8081
-DB_HOST=localhost
+API_HOST=localhost
+
+KEYGEN_PORT=8081
+KEYGEN_HOST=localhost
+
 DB_PORT=5432
+DB_HOST=localhost
 DB_DATABASE=fastbin
 DB_USERNAME=username
-DB_PASSWORD=password
+DB_PASSWORD=password