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Your development environment

There are different ways a developer can use the docker environment for development.

Probably the most flexible way is to run the services that alchemy depends on in one terminal, and run the alchemy server in a separate terminal:

  docker-compose build --no-cache # run this if package.json has changed
  docker-compose up graph-node alchemy-server # start the services needed by alchemy
  # in another terminal run:
  npm run start # start the development server
  # ...  point your browser to 127.0.0.1:3000, OPEN AND UNLOCK METAMASK
  # ... develop away
  # ... commit your changes
  docker-compose down

Alternatively you can run the webserver inside the alchemy container. This is how the tests on travis are run.

  docker-compose build # run this if package.json has changed
  docker-compose up alchemy # start alchemy and all the containers that depend on it
  # in another shell run this:
  # ...  point your browser to 127.0.0.1:3000, OPEN AND UNLOCK METAMASK and connect to localhost:8545
  # ... develop away
  # ... commit your changes
  docker-compose down

See docker for details about the docker containers.

Helpful scripts

You can give all the Ganache test accounts a bunch of GEN to play with by running ts-node ./scripts/mintGen.ts. This requires first installing ts-node: npm install -g ts-node

Developing @daostack/client in tandem with alchemy with npm link

The setup

Download and install the client package and use npm link for local development

# get the dev branch from the client repository
git clone https://github.com/daostack/client.git#dev
cd client
npm install
npm run build
npm link
cd ../alchemy # cd to the alchemy directory
npm link @daostack/client

Now you should find a link to your local client directory in node_modules/@daostack/client

The development cycle

The alchemy webpack process uses the compiled .js files in @daostack/client/dist. That means that when you make changes in the typescript .ts files in the client library, they will not be picked up until they are compiled to new dist/*.js files. You can do that by running:

npm run build:watch

Troubleshooting

  • npm run service-status will check quickly if all services are responding as expected.
  • docker-compose logs graph-node will show the logs of the graph-node docker container (check the docker-compose.yml file for the names of the other containers)
  • On Travis, there is a Debug Info section that is logged that contains some useful information
  • if docker build or docker-compose are failing for some unfathomable reason, you can kill and clear out all existing containers and associated data, to force docker to start from scratch (WARNING this will operate on all containers and associated data, not just those used by Alchemy). These are linux commands: 
    docker kill $(docker ps -a -q)
docker rm $(docker ps -a -q)
docker rmi $(docker images -a -q)