Skip to main content

Azure Pipelines - Use pipeline variables

I’m currently migrating an existing CI/CD pipeline build in Azure DevOps from the ‘classic’ build approach to YAML templates.

In our old setup we had 2 steps:

  • A CI pipeline that builds our application, runs all tests and packages the application in a Docker container. This container is then published to Azure Container Registry.
  • A Release pipeline that is triggered once the CI pipeline completes. The CI pipeline is available as an artifact.

We use the CI pipeline ‘branchname’ together with the ‘buildid’ to find the correct image inside ACR and deploy it:

example.azurecr.io/cms-spa:$(Release.Artifacts._CMS - CI.SourceBranchName).$(Release.Artifacts._CMS - CI.BuildId)

To achieve the same thing through Azure Pipelines and YAML templates we need to first define the CI build as a Pipeline Resource which I explained in this post: https://bartwullems.blogspot.com/2021/06/azure-pipelinespipeline-resource-trigger.html.

Once the pipeline resource is set, we can also use the ‘branchname’ and ‘buildid’. This can be done through Pipeline Resource variables.

The variable names are not the same as when using the Release Pipeline. Here are the available variables:

resources.pipeline.<Alias>.projectID
resources.pipeline.<Alias>.pipelineName
resources.pipeline.<Alias>.pipelineID
resources.pipeline.<Alias>.runName
resources.pipeline.<Alias>.runID
resources.pipeline.<Alias>.runURI
resources.pipeline.<Alias>.sourceBranch
resources.pipeline.<Alias>.sourceCommit
resources.pipeline.<Alias>.sourceProvider
resources.pipeline.<Alias>.requestedFor
resources.pipeline.<Alias>.requestedForID

So to find the correct ACR image inside our YAML pipeline, we need to construct the image name like this:

example.azurecr.io/cms-spa:$(resources.pipeline.cms-ci.sourceBranch).$(resources.pipeline.cms-ci.runID)

Labels:

Popular posts from this blog

Azure DevOps/ GitHub emoji

I’m really bad at remembering emoji’s. So here is cheat sheet with all emoji’s that can be used in tools that support the github emoji markdown markup: All credits go to rcaviers who created this list.
Read more

Podman– Command execution failed with exit code 125

After updating WSL on one of the developer machines, Podman failed to work. When we took a look through Podman Desktop, we noticed that Podman had stopped running and returned the following error message: Error: Command execution failed with exit code 125 Here are the steps we tried to fix the issue: We started by running podman info to get some extra details on what could be wrong: >podman info OS: windows/amd64 provider: wsl version: 5.3.1 Cannot connect to Podman. Please verify your connection to the Linux system using `podman system connection list`, or try `podman machine init` and `podman machine start` to manage a new Linux VM Error: unable to connect to Podman socket: failed to connect: dial tcp 127.0.0.1:2655: connectex: No connection could be made because the target machine actively refused it. That makes sense as the podman VM was not running. Let’s check the VM: >podman machine list NAME         ...
Read more

Cleaner switch expressions with pattern matching in C#

Ever find yourself mapping multiple string values to the same result? Being a C# developer for a long time, I sometimes forget that the C# has evolved so I still dare to chain case labels or reach for a dictionary. Of course with pattern matching this is no longer necessary. With pattern matching, you can express things inline, declaratively, and with zero repetition. A small example I was working on a small script that should invoke different actions depending on the environment. As our developers were using different variations for the same environment e.g.  "tst" alongside "test" , "prd" alongside "prod" .  We asked to streamline this a long time ago, but as these things happen, we still see variations in the wild. This brought me to the following code that is a perfect example for pattern matching: The or keyword here is a logical pattern combinator , not a boolean operator. It matches if either of the specified pattern...
Read more