Custom Control Conditions in Azure DevOps Pipeline Steps

Azure DevOps pipelines support default conditions allowing you to execute a step “Only when all previous tasks have succeeded”, “Even if a previous task has failed, unless the build was canceled”, “Even if a previous task has failed, even if the build was canceled” or “Only when a previous task has failed”. These conditions facilitate execution of  steps in a build or release pipeline to cater different scenarios. However, to support scenarios not covered by the default conditions you can implement custom control conditions in Azure DevOps pipeline steps. There is a good explanation of custom conditions in this article. Let’s explore two advance scenarios that can be handled with custom conditions, which are not explained in the article.

Enable Conditional Build/Release Tasks in VSTS

TFS/VSTS new build and release management is providing great flexibility in implementing CI,CD pipelines. To further enhance the flexibility a new feature “Conditional Tasks” is introduced to Tasks of build and release management. This was a user voice request that got implemented and available as preview in Team Services. This new conditional control option let’s you execute a task base on few predefined conditions and using custom conditions.

Predefined conditions

• Only when all previous tasks have succeeded
• Even if a previous task has failed, unless the build was canceled
• Even if a previous task has failed, even if the build was canceled
• Only when a previous task has failed