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README.md

Dart backend for cocoon

This folder contains a Dart based backend for Cocoon.

Building and running

Prerequisites

  • Install the Google Cloud Developer Tools Command Line Interface (gcloud). Then initialize it and authenticate yourself by running:
gcloud auth application-default login
gcloud init
export PATH="$PATH":"path/to/flutter/bin/"
flutter upgrade
flutter pub get
export PATH="$PATH":"path/to/flutter/bin/cache/dart-sdk/bin/"

Running the tests

$ dart test

Running codegen

JSON

To update the JSON serialization generated code, run:

$ dart run build_runner build

Any updates should be checked into source control.

Protobuf

To update the Protocol Buffer generated code:

  1. Activate and run protofu

    dart pub global activate protofu
protofu

  2. Format

    dart format --set-exit-if-changed --line-length=120 .

  3. Remove the unused generated files:

    find . -regex '.*\.\(pbjson\|pbserver\)\.dart' -delete

    or

    find -E . -regex '.*(pbserver|pbjson)\.dart'  -delete

    (you can remove the *.pbenum.dart files too, except for protobuffers that actually define enums, like build_status_response.proto)

Generating cloud datastore indexes

To update the indexes in the App Engine project, run:

$ gcloud datastore indexes create index.yaml

Local development

Using physical machine

  • Starting server
dart bin/local_server.dart

If you see Serving requests at 0.0.0.0:8080 the dev server is working.

Using Docker

  • Running a local development instance

Once you've installed Docker and have the docker command-line tool in your path, then you can use the following commands to build, run, stop, and kill a local development instance.

# Build the docker image
$ docker build -t local .

# Start the local container, clearing the console buffer and tailing the logs
$ container_id="$(docker run -d -p 8080:8080 local)" && \
    clear && \
    printf '\e[3J' && \
    docker logs $container_id -f

# Stop the local Docker container
$ docker container ls|grep local|tr -s ' '|cut -d' ' -f1|xargs docker container stop

# Remove the local Docker image
$ docker images|grep local|tr -s ' '|cut -d' ' -f3|xargs docker rmi -f
  • ssh into instance
$ docker exec -it <container name> /bin/bash

Deploying a release to App Engine

Auto-deploy

Cocoon auto deployment has been set up via Google Cloud Build daily on Workdays.

[Manual-deploy(go/cocoon-cloud-build#manual-deploy)

  • Using the cloud build

This is easy to deploy if you simply want a new version based on the latest commit. Open Cloud Build dashboard and click run in the push-master trigger (example)

$ dart dev/deploy.dart --version version-$(git rev-parse --short HEAD) --project flutter-dashboard

The deploy script will build the Flutter project and copy it over for deployment. Then it will use the Google Cloud CLI to deploy the project to AppEngine.

For more options run:

$ dart dev/deploy.dart --help