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developer-guide.md

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Developer Guide

This guide helps you get started developing MLP.

Dependencies

Make sure you have the following dependencies installed before setting up your developer environment:

Google Oauth Credential

MLP uses Google Sign-in to authenticate the user to access the API and UI. You can follow this tutorial to create your credential. After you get the client ID, specify it into OAUTH_CLIENT_ID in the root's .env.development and REACT_APP_OAUTH_CLIENT_ID in the ui/packages/app/.env.development.

Download MLP

We recommend using the Git command-line interface to download the source code for the MLP project:

  1. Create github.com/gojek directory in your $GOPATH by running: mkdir -p $GOPATH/src/github.com/gojek from your terminal.
  2. Run cd $GOPATH/src/github.com/gojek to go to the newly created gojek directory.
  3. Run git clone git@github.com/gojek/mlp.git mlp to downloads MLP repository to a new mlp directory.
  4. Open the mlp directory using your favorite code editor.

Build MLP

MLP server consists of two components; the ui (frontend) and the api (backend).

UI (Frontend)

Before we can build the UI assets, we need to install the dependencies:

make init-dep-ui

After the command has finished, we can start building our UI source code:

make start-ui

Once make start-ui has built the assets, it will continue to do so whenever any of the UI files change. This means you don't have to manually build the assets every time you change the code.

Next, we'll build the web server that will serve the frontend assets we just built.

API (Backend)

Build and run the backend by running:

make init-dep-api
make build-api
make local-db
make run

These commands download dependencies, compile the Go source code, start Postgres Docker container, and start the web server.

By default, you can access the web server at http://localhost:8080/.

Test MLP

The test suite consists of two types of tests: unit tests and end-to-end tests.

Run unit tests

make test-api

Run end-to-end tests

make it-test-api-local

Configure MLP for development

MLP follows the twelve-factor app by storing the config in the environment. By default, we include the .env.development in the root directory into Makefile. You can override the default configuration by changing this file. If you run the MLP server without using make command, you need to set the environment variables value by yourself.

Configure Database

MLP requires Postgresql to run. We uses Docker to make the task of setting up Postgresql databases a little easier.

make local-db

The script runs Postgresql Docker container and do the database migration.

Build a Docker image

To build a Docker image, run:

build-docker

The resulting image will be tagges as gojektech/mlp:dev.