From 891e56511704d82bf1c3dc86c0a60586020284a2 Mon Sep 17 00:00:00 2001
From: Gary Murphy <gary.murphy62@mail.dcu.ie>
Date: Wed, 29 Mar 2023 15:30:43 +0100
Subject: [PATCH] api gateway basic functionality

---
 src/backend/apiGateway.go | 48 +++++++++++++++++++++------------------
 1 file changed, 26 insertions(+), 22 deletions(-)

diff --git a/src/backend/apiGateway.go b/src/backend/apiGateway.go
index 5e34b5c..94089a6 100644
--- a/src/backend/apiGateway.go
+++ b/src/backend/apiGateway.go
@@ -4,7 +4,6 @@ import (
 	"fmt"
 	"log"
 	"net/http"
-	"encoding/json"
 	"io/ioutil"
 	"github.com/gorilla/mux"
 )
@@ -15,40 +14,40 @@ type Schema struct {
 }
 
 type Container struct {
+	Id string `json:"Id`
 	Name string `json:"Name"`
 	port string `json:"Port"` 
 }
 
+var Containers []Container
+
 func homePage(w http.ResponseWriter, r *http.Request) {
 	fmt.Fprintf(w, "Welcome to the home page!")
 }
 
 func getSchema(w http.ResponseWriter, r *http.Request){
 	vars := mux.Vars(r)
-	container := vars["Name"]
-	port := vars["Port"]
+	key := vars["container"]
 
-	requestUrl := fmt.Sprint("http://%s:%s/schema", container, port)
+	for _, container := range Containers {
+		if container.Id == key {
+			requestURL := fmt.Sprintf("http://%s:%s/schema", container.Name, container.port)
+			fmt.Fprintf(w, requestURL)
+			resp, err := http.Get(requestURL)
+			if err != nil {
+				log.Fatal("Request to container failed: %v", err)
+			}
 
-	resp, err := http.Get(requestUrl)
-	if err != nil {
-		log.Fatal("Request to %s Failed: %v", container, err)
+			defer resp.Body.Close()
+
+			body, err := ioutil.ReadAll(resp.Body)
+			if err != nil {
+				log.Fatal("Failed to print Body: %v", err)
+			}
+
+			fmt.Fprintf(w,string(body))
+		}
 	}
-	defer resp.Body.Close()
-
-	body, err := ioutil.ReadAll(resp.Body)
-	if err != nil {
-		log.Fatal("error: %v", err)
-	}
-
-	var response Schema
-	err = json.Unmarshal(body, &response)
-	if err != nil {
-		log.Fatal("failed to unmarshal: %v", err)
-	}
-	
-
-	fmt.Println(response)
 
 }
 
@@ -62,5 +61,10 @@ func handleRequests() {
 }
 
 func main() {
+
+	Containers = []Container{
+		Container{Id: "1", Name: "localhost", port: "3000"},
+	}
+
 	handleRequests()
 }
\ No newline at end of file