Continuous staging with Grow

README.txt

1. Activate the "App Engine Admin API" API. https://console.cloud.google.com/apis/api/appengine/overview?project=PROJECT
1. Create a service account and download a JSON private key.
1. Ensure the service account has "editor" access to the Cloud project.
1. Run `base64 <file>.json | pbcopy`
1. Paste the key into a Circle CI environment variable `CLIENT_SECRET`.

circle.yaml

general:
  artifacts: ~

machine:
  environment:
    SUBDOMAIN: $(echo $CIRCLE_BRANCH | sed -e 's/\//-/g' | sed -e 's/^feature-//g')
  python:
    version: 2.7.11

test:
  override: ~
  
dependencies:
  pre:
  - echo $CLIENT_SECRET | base64 --decode > $HOME/client-secret.json
  - pip install grow
  - make develop
  - gcloud --quiet components update app
  - gcloud auth activate-service-account --key-file $HOME/client-secret.json
  cache_directories:
  - bower_components
  - build
  - lib
  - ~/.cache/pip/

deployment:
  deploy:
    branch: master
    commands:
    - make prod_version=$CIRCLE_SHA1 deploy
  stage:
    branch: /^((?!master).)*$/
    commands:
    - make staging_version=$SUBDOMAIN stage

Makefile

prod_version ?= prod
project ?= PROJECT
staging_version ?= staging

develop:
	pip install -t lib grow
	grow install

test:
	grow build

stage:
	PATH=$(PATH):$(HOME)/bin grow deploy -f review
	gcloud preview app deploy \
	  -q \
	  --project=$(project) \
	  --version=$(staging_version) \
	  --verbosity=error \
	  --no-promote \
	  app.yaml

deploy:
	PATH=$(PATH):$(HOME)/bin grow deploy -f review
	gcloud preview app deploy \
	  -q \
	  --project=$(project) \
	  --version=$(prod_version) \
	  --verbosity=error \
	  --promote \
	  app.yaml

run-gae:
	dev_appserver.py --allow_skipped_files=true .

.PHONY: develop deploy run-gae test