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Assignment4.md

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Assignment-4

To set up and execute

  1. Download and unzip the file for Assignment 4. cd into it.
  2. Set up environment variables.

    The unredacted environment variable MONGO_CONNECTION_STRING can be found in our Canvas submission for private variables.

  • frontend

    • Save the frontend variables under frontend/.env. 
      REACT_APP_BACKEND_URL=http://localhost:8080/api
REACT_APP_USER_SERVICE_BACKEND_URL=http://localhost:8000/

  • user-service

    • Save the user-service variables twice in backend/user-service/.env and backend/user-service/.env.docker
      • backend/user-service/.env.docker
      DATABASE_URL="postgresql://postgres:postgres@postgres:5432/peerprep?schema=public"
PORT=8000
JWT_SECRET="secret"
FRONTEND_URL="http://localhost:3000"
      • backend/user-service/.env (need to change DATABASE_URL because we would not be in docker compose's network)
      DATABASE_URL="postgresql://postgres:postgres@localhost:5432/peerprep?schema=public"
PORT=8000
JWT_SECRET="secret"
FRONTEND_URL="http://localhost:3000"

  • question-service

    • Save the question-service variables under backend/question-service/.env 
      MONGO_CONNECTION_STRING=<redacted>
PORT=8080
FRONTEND_URL="http://localhost:3000"
  1. Actually run it with Docker.
  • Option 1 (recommended): Docker Compose
    1. cd into all frontend/backend services and type npm install
    2. docker-compose up
  • Option 2: Running individually with docker
    1. Navigate to the folder of the zip file you unzipped previously.
    2. cd backend/question-service
    3. docker build . -t question-service && docker run -p 8080:8080 -d question-service
    4. Open another terminal tab. Repeat step 1.
    5. cd backend/user-service
    6. docker build . -t user-service && docker run -p 8000:8000 -d user-service
  1. Testing
  • If you used option 1, the frontend should be up as well, navigate to http://localhost:3000 to see the results.
  • If you used option 2, you can use some curl commands to verify the services work
    • Question service: curl localhost:8080/api/questions/1
    • User service: curl localhost:8000/currentUser