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Gonzalo Peña-Castellanos: Automating Workflows with GitHub Actions

Meetup

Join our Meetup group for upcoming events: https://www.meetup.com/data-umbrella

Key Links

Resources

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Event

Learn about GitHub Actions and how they can accelerate your application development workflows. A workflow is a configurable automated process made up of one or more jobs. We will learn how to configure and use workflows existing current actions and start looking at how an action can be developed from scratch.

Speaker

I am a Colombian Civil Engineer with an MSc. in Hydroinformatics and an MSc. in Sanitary Engineering that discovered a passion for Software Development and Data Science which led me to collaborate in different open source projects and to eventually join Anaconda, Inc (formerly known as Continuum Analytics) and currently Quansight, Inc as Senior Software Engineer, and Data Scientist (in development). I am an active member of the open source community contributing to different projects and a leader in the Python Colombia Community helping shape and organize communities such as Django Girls Colombia, Python Bucaramanga, Python Colombia and the national and Latin American Python Conferences, PyCon Colombia (2018, 2019, 2020) and SciPy Latam (2019, 2021) respectively. I am currently a core developer with Project Jupyter and Project napari. I am the author of the setup-miniconda Github Action to help automate conda environment and workflows.

Video:

Automating Workflows with GitHub Actions (Gonzalo Peña-Castellanos)

Transcript

Agenda

00:00:00 Reshama introduces Data Umbrella
00:04:15 Gonzalo introduces self and projects
00:06:36 ---Outline of talk
00:07:55 ---PART 1: GitHub, Workflows and GitHub Actions
00:11:00 GitHub Development Workflow with "events" Can trigger "events" or "actions" based on these events: issue opened, PR submitted, comment on issue or PR is merged, closed or updated
00:11:55 Continuous integration and continuous development (CI/CD)
00:12:05 ("webhook" mentioned), cross-platform testing is done by CI/CD
00:13:55 Microsoft and how GitHub Actions started; GH actions is a nice wrapper around Azure pipelines
00:15:07 What are GitHub Actions? A platform to "automate development workflows"
00:15:22 Mariatta's talk on CI/CD
00:16:00 What are developer workflows? CI/CD does not mean GitHub actions. It is one of many workflows you can automate, but it is not the only one.
00:16:13 Types of developer workflows
00:19:35 ---PART 2: GitHub Action Components
00:19:52 Workflows (& YAML files)
00:20:28 Events
00:20:55 Jobs and Runners
00:21:52 Actions
00:22:55 ---PART 3: Workflow Syntax
00:23:15 Workflow yaml file
00:24:00 YAML = YAML Ain't Markup Language
00:26:21 Event types: Labels
00:26:44 Event types: Pushing / PRs / Branches
00:27:19 Event types: Manual dispatch
00:29:03 Dependencies between jobs
00:29:36 Context: expressions (run jobs conditionally)
00:30:53 Context: default environment variables
00:31:18 Strategies
00:32:57 User-defined environment variables: Global
00:33:52 Actions
00:35:35 Other topics
00:37:06 ---PART 4: GitHub Actions Marketplace
00:37:06 Q&A: Can we use on MacOS and Windows?
00:38:03 Q&A: Meaning of "17" in cron?
00:40:22 Cron job in GitHub actions without need for Heroku?
00:41:00 GitHub Workflow Rates (pricing)
00:42:26 Q&A: Why is MacOS more expensive than others for GitHub pricing?
00:43:39 Q&A: Can jobs be run in parallel?
00:47:40 Q&A: Where to go for support for GitHub Actions?
00:49:48 ---PART 4: GitHub Actions Marketplace
00:55:10 GH Actions: data science, conda
00:58:52 stale issue labeler
01:01:05 ---PART 5: Creating a Workflow: live examples
01:01:28 Migrating from other services (Azure Pipelines, CircleCI, GitLab CI/CD, Jenkins, Travis CI)
01:02:03 Starter Workflows!
01:02:20 https://github.com/actions/starter-wo...
01:02:35 Example: Create a new repository and start! First issue
01:08:00 Example: Suggested GH action for the repo: "Simple Workflow"
01:13:05 ---PART 6: Creating a Custom GitHub Action
01:13:20 Q&A: How to save (download) artifacts?
01:17:13 ---PART 6: Creating a Custom GitHub Action
01:17:20 3 ways to run GitHub Actions (Composite, JavaScript, Docker Container)
01:20:40 Example: Napari
01:21:45 napari-svg plugin
01:22:45 composite action
01:24:40 Other topics for custom actions (Docker, JavaScript / Typescript actions, Outputs on actions)
01:25:20 Talley Lambert with napari: https://github.com/tlambert03/napari-...
01:34:15 Q&A: What would an advanced GitHub Actions webinar cover?
01:34:35 Q&A: Resources for Learning GitHub Actions: https://docs.github.com/en/actions
01:36:20 Typescript example
01:37:35 JavaScript Action template
01:41:30 Closing words