Configuration templates for Google App Engine Python 3 standard environment with CI/CD .gitlab-ci.yml

.gcloudignore

# https://cloud.google.com/sdk/gcloud/reference/topic/gcloudignore
#
# This file specifies files that are *not* uploaded to Google Cloud Platform
# using gcloud. It follows the same syntax as .gitignore, with the addition of
# "#!include" directives (which insert the entries of the given .gitignore-style
# file at that point).
#
# For more information, run:
#   $ gcloud topic gcloudignore
#
.gcloudignore
# If you would like to upload your .git directory, .gitignore file or files
# from your .gitignore file, remove the corresponding line
# below:
.git
.gitignore

# Python pycache:
__pycache__/

# Ignored by the build system
/setup.cfg

# IDE and project specific ignore list
.idea/
docs/
instance/
*egg*/
.pytest_cache/

Pipfile*

.gitlab-ci.yml

image: google/cloud-sdk:alpine

before_script:
  - apk add gettext
  - export APP_VERSION_DOTTED=`git describe`
  - export APP_VERSION=`echo $APP_VERSION_DOTTED | sed -r 's/\./\-/g'`
  - echo __version__=\'$APP_VERSION_DOTTED\' > papa/version.py
  - echo $SERVICE_ACCOUNT > /tmp/$CI_PIPELINE_ID.json
  - envsubst < app.yaml.template > app.yaml
  - gcloud auth activate-service-account --key-file /tmp/$CI_PIPELINE_ID.json

deploy_dev:
  stage: deploy
  environment:
    name: development
    url: https://myservice-dev.example.com
  only:
  - develop
  script:
  - gcloud --quiet --project $PROJECT_ID app deploy --version $APP_VERSION

deploy_prod:
  stage: deploy
  environment:
    name: production
    url: https://myservice.example.com
  only:
  - master
  script:
  - gcloud --quiet --project $PROJECT_ID app deploy --no-promote --version $APP_VERSION
#  when: manual

after_script:
- rm /tmp/$CI_PIPELINE_ID.json

app.yaml

service: default
runtime: python37

automatic_scaling:
  min_instances: 0
  # max_instances: 10

env_variables:
  SECRET_KEY: "MySuperSecretKey"
  APP_ENV: "development"
  
handlers:
#  - url: /images
#    static_dir: static/images

  - url: /.*
    secure: always
    redirect_http_response_code: 301
    script: auto

app.yaml.template

service: default
runtime: python37

automatic_scaling:
  min_instances: 0
  # max_instances: 10

env_variables:
  SECRET_KEY: "${SECRET_KEY}"
  APP_ENV: "${APP_ENV}"

handlers:
#  - url: /images
#    static_dir: static/images

  - url: /.*
    secure: always
    redirect_http_response_code: 301
    script: auto

cron.yaml

# https://cloud.google.com/appengine/docs/standard/python3/scheduling-jobs-with-cron-yaml

dispatch.yaml

# > gcloud app deploy dispatch.yaml
# https://cloud.google.com/appengine/docs/standard/python3/reference/dispatch-yaml

dispatch:
  # Send all myservice specific traffic to the my-service
  - url: "myservice.example.com/*"
    service: my-service

version.py

""" Get the current application version from git describe """

import subprocess


def get_version():
    return subprocess.check_output(['git', 'describe']).strip().decode('utf-8')


__version__ = get_version()