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Local Machine Development Setup

Cloning the project

$ git clone git@github.com:SFDO-Tooling/Metecho
$ cd Metecho

Making A Virtual Env

Metecho development requires Python v3.10. If which python3.10 returns a non-empty path, it's already installed and you can continue to the next step. If it returns nothing, then install Python v3.10 using brew install python, or from Python.org.

Assuming you're in the repo root, do the following to create a virtualenv (once you have virtualenvwrapper installed locally):

mkvirtualenv metecho --python=$(which python3.10)
setvirtualenvproject

Install Python requirements:

pip install -r requirements/dev.txt
pip install -r requirements/prod.txt

Create an .env file with the required environment variables:

cp env.example .env

Edit this file to change DJANGO_SECRET_KEY and DJANGO_HASHID_SALT to any two different arbitrary string values.

Next, run the following commands to generate a database encryption key:

python
>>> from cryptography.fernet import Fernet
>>> Fernet.generate_key()

This will output a bytestring, e.g. b'mystring='. Copy only the contents of '...', and add it to your .env file as DB_ENCRYPTION_KEY, e.g. DB_ENCRYPTION_KEY="mystring=".

To exit the Python shell, press Ctrl-Z and then Enter on Windows, or Ctrl-D on OS X or Linux. Alternatively, you could also type the Python command exit() and press Enter.

Finally, set the following environment variables:

SFDX_HUB_KEY=...
SFDX_CLIENT_ID=...
SFDX_CLIENT_SECRET=...
GITHUB_HOOK_SECRET=...
GITHUB_CLIENT_ID=...
GITHUB_CLIENT_SECRET=...
GITHUB_APP_ID=...
GITHUB_APP_KEY=...

Note that none of the values should be quoted, and the variables prefixed with DOCKER_ can be removed.

All of the remaining steps assume that you have the virtualenv activated. (workon metecho)

Installing JavaScript Requirements()

The project uses nvm to install a specific version of Node.js. Assuming you have nvm already installed and configured, run nvm install to install and activate the Node version specified in .nvmrc. Then use yarn to install dependencies:

nvm use
yarn

All of the remaining steps assume that you have the nvm activated. (nvm use)

Setting Up The Database

Assuming you have Postgres installed and running locally:

createdb metecho

Then run the initial migrations:

python manage.py migrate

If your database has outdated sample data for development, remove it with:

python manage.py truncate_data

To populate the database with sample data for development, run:

python manage.py populate_data

Running The Server

The local development server requires Redis to manage background worker tasks. If you can successfully run redis-cli ping and see output PONG, then you have Redis installed and running. Otherwise, run brew install redis (followed by brew services start redis) or refer to the Redis Quick Start.

To run the local development server:

yarn serve

This starts a process running Django, a process running Node, and an rq worker process. The running server will be available at http://localhost:8080/.

Recent versions of macOS have added security to restrict multithreading by default. If running on macOS High Sierra or later, you might need to set OBJC_DISABLE_INITIALIZE_FORK_SAFETY=YES via an additional environment variable.

Development Tasks

  • yarn serve: starts development server (with watcher) at http://localhost:8080/ (assets are served from dist/ dir)
  • yarn test: run all tests
  • yarn test:py: run Python tests
  • yarn test:js: run JS tests
  • yarn test:js:watch: run JS tests with a watcher for development
  • yarn lint: formats and lints all files
  • yarn lint:js: formats, lints, and type-checks .js files
  • yarn lint:sass: formats and lints .scss files
  • yarn lint:py: formats and lints .py files
  • yarn prettier:js: formats .js files
  • yarn lint:other: formats .json, .md, and .yml files
  • yarn tsc: runs JS type-checking
  • yarn build: builds development (unminified) static assets into dist/ dir
  • yarn prod: builds production (minified) static assets into dist/prod/ dir
  • yarn storybook: build storybook and run dev server