Deploy to Astro

This GitHub action automates deploying code from your GitHub repository to a Deployment on Astro, Astronomer's data orchestration platform and managed service for Apache Airflow.

You can use and configure this GitHub action to easily deploy Apache Airflow DAGs to an Airflow environment on Astro. Specifically, you can:

• Avoid manually running astro deploy with the Astro CLI every time you make a change to your Astro project.
• Automate deploying code to Astro when you merge changes to a certain branch in your repository.
• Incorporate unit tests for your DAGs as part of the deploy process.
• Create/delete a Deployment Preview. A Deployment Preveiw is an Astro Deployment that mirrors the configuration of your orginal Deployment.

This GitHub action runs as a step within a GitHub workflow file. When your CI/CD pipeline is triggered, this action:

• Checks out your GitHub repository.
• Optionaly create or delete a Deployment Preview to test your code changes on before deploying to production.
• Checks whether your commit only changed DAG code.
• Optional. Tests DAG code with pytest. See Run tests with pytest.
• Runs astro deploy --dags if the commit only includes DAG code changes.
• Runs astro deploy if the commit includes project configuration changes.

Prerequisites

To use this GitHub action, you need:

• An Astro project. See Create a project.
• A Deployment on Astro. See Create a Deployment.
• A Workspace or Organization API Token. See API Tokens
• Or a Deployment API key ID and secret. See Deployment API keys.

Astronomer recommends using GitHub Actions secrets to store ASTRO_API_TOKEN or Deployment API Keys. See the example in Workflow file examples.

Use this action

To use this action, read Automate code deploys with CI/CD. You will:

1. Create a GitHub Actions workflow in your repository that uses the latest version of this action. For example, astronomer/deploy-action@v0.3.
2. Configure the workflow to fit your team's use case. This could include creating a deployment preview or adding tests. See Configuration options.
3. Make changes to your Astro project files in GitHub and let this GitHub Actions workflow take care of deploying your code to Astro.

Astronomer recommends setting up multiple environments on Astro. See the Multiple branch GitHub Actions workflow in Astronomer documentation.

Configuration options

The following table lists the configuration options for the Deploy to Astro action.

Name	Default	Description
action	deploy	Specify what action you would like to take. Use this option to create or delete deployment previews. Specify either create-deployment-preview, delete-deployment-preview or deploy-deployment-preview. Don't sepcify anything if you are deploying to a regular deployment
deployment-id	false	Specifies the id of the deployment you to make a preview from or are deploying too
deployment-name	false	Specifies The name of the deployment you want to make preview from or are deploying too. Cannot be used with deployment-id
root-folder	.	Specifies the path to the Astro project directory that contains the dags folder
parse	false	When set to true, DAGs are parsed for errors before deploying to Astro
pytest	false	When set to true, all pytests in the tests directory of your Astro project are run before deploying to Astro. See Run tests with pytest
pytest-file	(all tests run)	Specifies a custom pytest file to run with the pytest command. For example, you could specify /tests/test-tags.py
force	false	When set to true, your code is deployed and skips any pytest or parsing errors
image-name		Specifies a custom, locally built image to deploy
workspace	false	If you are using an organization token you will need to provide a workspace-name or id
preview-name	false	Specifies custom preview name. By default this is branch name “_” deployment name
checkout	true	Whether to checkout the repo as the first step. Set this to false if you want to modify repo contents before invoking the action

Workflow file examples

In the following example, the GitHub action deploys code to Astro. This example assumes that you have one Astro Deployment and one branch. When a change is merged to the main branch, your Astro project is deployed to Astro. DAG files are parsed on every deploy and no pytests are ran.

name: Astronomer CI - Deploy code

on:
  push:
    branches:
      - main

env:
  ## Set API Token as an environment variable
  ASTRO_API_TOKEN: ${{ secrets.ASTRO_API_TOKEN }}

jobs:
  deploy:
    runs-on: ubuntu-latest
    steps:
    - name: Deploy to Astro
      uses: astronomer/deploy-action@v0.2
      with:
        deployment-id: <deployment id>
        parse: true

Use the following topics to further configure the action based on your needs.

Change the DAG folder

In the following example, the folder /example-dags/dags is specified as the DAG folder.

steps:
- name: Deploy to Astro
  uses: astronomer/deploy-action@v0.2
  with:
    deployment-id: <deployment id>
    root-folder: /example-dags/dags/

Run Pytests

In the following example, the pytest located at /tests/test-tags.py runs before deploying to Astro.

steps:
- name: Deploy to Astro
  uses: astronomer/deploy-action@v0.2
  with:
    deployment-id: <deployment id>
    pytest: true
    pytest-file: /tests/test-tags.py

Ignore parsing and testing

In the following example, force is enabled and both the DAG parse and pytest processes are skipped.

steps:
- name: Deploy to Astro
  uses: astronomer/deploy-action@v0.2
  with:
    deployment-id: <deployment id>
    force: true

Deploy a custom Docker image

In the following example, a custom Docker image is built and deployed to an Astro Deployment.

name: Astronomer CI - Additional build-time args

on:
  push:
    branches:
      - main

jobs:
  build:
    runs-on: ubuntu-latest
    env:
      ## Set API Token as an environment variable
      ASTRO_API_TOKEN: ${{ secrets.ASTRO_API_TOKEN
    steps:
    - name: Check out the repo
      uses: actions/checkout@v3
    - name: Create image tag
      id: image_tag
      run: echo ::set-output name=image_tag::astro-$(date +%Y%m%d%H%M%S)
    - name: Build image
      uses: docker/build-push-action@v2
      with:
        tags: ${{ steps.image_tag.outputs.image_tag }}
        load: true
        # Define your custom image's build arguments, contexts, and connections here using
        # the available GitHub Action settings:
        # https://github.com/docker/build-push-action#customizing .
        # This example uses `build-args` , but your use case might require configuring
        # different values.
        build-args: |
          <your-build-arguments>
    - name: Deploy to Astro
      uses: astronomer/deploy-action@v0.2
      with:
        deployment-id: <deployment id>
        image-name: ${{ steps.image_tag.outputs.image_tag }}
      

Deployment Preview Templates

This section contains four workflow files that you will need in your repository to have a full Deployment Preview Cycle running for your Deployment. A Deployment Preview is an Astro Deployment that mirrors the configuration of your original Deployment. This Deployment Preview can be used to test your new pipelines changes before pushing them to your orginal Deployment. The scripts below will take your pipeline changes through the following flow:

1. When a new branch is created a Deployment Preview will be created based off your orginal Deployment
2. When a PR is created from a branch code changes will be deployed to the Deployment Preview
3. When a PR is merged into your "main" branch code changes will be deployed to the orginal Deployment
4. When a branch is deleted the the corresponding Deployment Preview will also be deleted

Create Deployment Preview

name: Astronomer CI - Create deployment preview

on:
  create:
    branches:
    - "**"

env:
  ## Sets Deployment API key credentials as environment variables
  ASTRO_API_TOKEN: ${{ secrets.ASTRO_API_TOKEN }}

jobs:
  deploy:
    runs-on: ubuntu-latest
    steps:
    - name: Create Deployment Preview
      uses: astronomer/deploy-action@v0.2
      with:
        action: create-deployment-preview
        deployment-id: <orginal deployment id>

Deploy to Deployment Preview

name: Astronomer CI - Deploy code to Preview

on:
  pull_request:
    branches:
      - main

env:
  ## Sets Deployment API key credentials as environment variables
  ASTRO_API_TOKEN: ${{ secrets.ASTRO_API_TOKEN }}

jobs:
  deploy:
    runs-on: ubuntu-latest
    steps:
    - name: Deploy to Deployment Preview
      uses: astronomer/deploy-action@v0.2
      with:
        action: deploy-deployment-preview
        deployment-id: <orginal deployment id>

Delete Deployment Preview

name: Astronomer CI - Delete Deployment Preview

on:
  delete:
    branches:
    - "**"

env:
  ## Sets Deployment API key credentials as environment variables
  ASTRO_API_TOKEN: ${{ secrets.ASTRO_API_TOKEN }}

jobs:
  deploy:
    runs-on: ubuntu-latest
    steps:
    - name: Create Deployment Preview
      uses: astronomer/deploy-action@v0.2
      with:
        action: delete-deployment-preview
        deployment-id: <orginal deployment id>

Deploy to Orginal Deployment

name: Astronomer CI - Deploy code to Astro

on:
  push:
    branches:
      - main

env:
  ## Sets Deployment API key credentials as environment variables
  ASTRO_API_TOKEN: ${{ secrets.ASTRO_API_TOKEN }}

jobs:
  deploy:
    runs-on: ubuntu-latest
    steps:
    - name: Deploy to Astro
      uses: astronomer/deploy-action@v0.2
      with:
        deployment-id: <orginal deployment id>