How to Retrieve the Source Branch of a Tag in GitHub Actions скачать в хорошем качестве

How to Retrieve the Source Branch of a Tag in GitHub Actions

Discover a method to extract the `source branch` from a tag in GitHub Actions for your CI/CD pipeline. Enhance your workflows with this straightforward solution! --- This video is based on the question https://stackoverflow.com/q/75329260/ asked by the user 'Tony Chan' ( https://stackoverflow.com/u/12327256/ ) and on the answer https://stackoverflow.com/a/75340216/ provided by the user 'Tony Chan' ( https://stackoverflow.com/u/12327256/ ) at 'Stack Overflow' website. Thanks to these great users and Stackexchange community for their contributions. Visit these links for original content and any more details, such as alternate solutions, latest updates/developments on topic, comments, revision history etc. For example, the original title of the Question was: Get the source branch of a tag on GitHub Actions Also, Content (except music) licensed under CC BY-SA https://meta.stackexchange.com/help/l... The original Question post is licensed under the 'CC BY-SA 4.0' ( https://creativecommons.org/licenses/... ) license, and the original Answer post is licensed under the 'CC BY-SA 4.0' ( https://creativecommons.org/licenses/... ) license. If anything seems off to you, please feel free to write me at vlogize [AT] gmail [DOT] com. --- How to Retrieve the Source Branch of a Tag in GitHub Actions In the world of Continuous Integration and Continuous Deployment (CI/CD), understanding how to effectively manage tags and branches in version control systems like Git is crucial. If you're using GitHub Actions, you might run into a common challenge: how to get the source branch of a tag that triggers your workflows. This guide will guide you through this problem and provide a concise solution to extract the source branch from a tag in GitHub Actions. The Challenge During the creation of a CI/CD pipeline, you may want to trigger workflows based on tags. This is a common practice for marking releases or important checkpoints in your development workflow. However, when a tag is created in GitHub, the environment variable ${{ github.ref_name }} returns the tag name, not the original branch from which the commit was made. In practical terms, this means that you often have the following limitation: When you create a tag, ${{ github.ref_name }} shows the tag name instead of the branch from which it originated. You need the source branch name to successfully execute further build steps or deployments. The Solution: Retrieving the Source Branch Luckily, there is a way to find the source branch from a tag in GitHub Actions. By running a few Git commands within your workflow, you can fetch the branch name associated with the tag. Here’s how to do it step-by-step. Step-wise Breakdown Access the Git Branch: First, you need to find the remote branches that contain the commit associated with the tag. This is done using the command git branch -r --contains <tag>, where <tag> is referenced by ${{ github.ref }}. Filter Out the Branch Name: After obtaining the raw output of branches, we need to extract just the branch name and convert it to lowercase to ensure consistency. This can be achieved through command-line processing. Export the Branch Name: Finally, output the branch name to GitHub's environment variables so it can be consumed later in your workflow. The Complete Command Below is the complete GitHub Actions command you can use in your workflow file (e.g., .github/workflows/your_workflow.yml): [[See Video to Reveal this Text or Code Snippet]] Explanation of the Command git branch -r --contains ${{ github.ref }}: This command lists all remote branches that contain the commit referenced by the tag. ${raw--*/}: This part trims everything before the last slash, leaving just the branch name. tr [:upper:] [:lower:]: This command converts the branch name to lowercase to avoid case sensitivity issues. echo "branch=$branch" >> $GITHUB_OUTPUT: This outputs the branch name to the GitHub Actions environment so that it can be accessed by other steps in your workflow. Conclusion Retrieving the source branch from a tag in GitHub Actions doesn't have to be complicated. By using the provided command in your CI/CD pipeline, you can easily access branch information necessary for building, testing, and deploying your applications efficiently. This ability to tie tags back to their originating branches can streamline your workflows and ensure that you maintain clarity in your deployment cycles. Next time you design a CI/CD pipeline in GitHub Actions, remember this solution for managing branch and tag relationships effectively!