OpenShift GitHub Tag

Work In Progress: This is RDD: Readme Driven Development. So there is no code yet, just ideas for the moment.

The idea is to automatically tag an image in OpenShift each time you tag your source code in GitHub.

For that, we would listen to GitHub Push Events and for each new tag:

• check if there is a BuildConfig for the repository
• check if there is an existing Image for the commit of the tag
  • if no, trigger a new build for this commit
• tag the image with the name of the GitHub tag
• if the GitHub tag follows the Semantic Versioning spec:
  • tag the image with the major version
  • tag the image with the major.minor version
  • tag the image with the major.minor.patch version

Example:

• Commit 7a42b13 and push
• GitHub triggers OpenShift build
• Git Tag version 1.2.3 (at commit 7a42b13)
• Our little controller sees the tag event, and:
  • Tag the Image (result of the build for commit 7a42b13) as 1, 1.2 and 1.2.3

Use-cases:

• Keep an environment that will be auto-redeployed at each commit: a DC with an ICT for the latest tag for example
• Have an environment that will be auto-redeployed for each new minor release: a DC with an ICT for the 1 tag for example
• Have an environment that will be auto-redeployed for each new patch release: a DC with an ICT for the 1.2 tag for example

With this controller, your OpenShift ImageStreams will automatically reflect the tagging system you have for your source code in git.