Update env to enable matching service to run locally and in docker

Author: yuxuanleong

Backend/MatchingService/rabbitmq/setup.js

@@ -7,7 +7,9 @@ const dead_letter_queue_name = "dead_letter_queue";
 // const cancel_queue_name = "cancel_queue";
 const difficulties = ["easy", "medium", "hard", "any"];
 const axios = require('axios');
-const categoryAPIUrl = 'http://question-service:3001/api/categories';
+// Matching Service code
+const questionServiceHost = process.env.QUESTION_SERVICE_HOST || 'localhost';
+const categoryAPIUrl = `http://${questionServiceHost}:3001/api/categories`;
 
 let queueNamesPromise = axios.get(categoryAPIUrl)
     .then(response => {

Backend/MatchingService/rabbitmq/subscriber.js

@@ -5,7 +5,9 @@ const { notifyUsers } = require('../websocket/websocket');
 const { v4: uuidv4 } = require('uuid');
 // matchingService/fetchQuestion.js
 const axios = require('axios');
-const questionAPIUrl = 'http://question-service:3001/api/questions';
+// Matching Service code
+const questionServiceHost = process.env.QUESTION_SERVICE_HOST || 'localhost';
+const questionAPIUrl = `http://${questionServiceHost}:3001/api/questions`;
 
 
 // TODO: Subscribe and acknowledge messages with user info when timeout/user matched

docker-compose.yml

@@ -24,6 +24,8 @@ services:
       dockerfile: Dockerfile
     ports:
       - "8080:8080"
+    environment:
+      - QUESTION_SERVICE_HOST=question-service
     depends_on:
       question-service:
         condition: service_healthy