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New Feature
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Resolution: Unresolved
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Major
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None
I would like to define parallel stages{} blocks that are executed in parallel dynamically during runtime.
The stages{} blocks should run in parallel, the stage{} definitions in the parallel stages{} blocks should run sequential.
A usecase for this is that the pipeline determines which applications changed in a branch and then creates parallel stages{} block to run build, checks, test etc per application.
Per application tests should only run if the previous build stage for the app succeeded.
It seems to be not supported currently. I couldn't find a way to realize it. I tried different variations of the syntax but couldn't make it work.
Example of what I would like to do:
pipeline { agent none stages { stage('Discover Changed Applications') { agent any steps { script { apps = ["app-one", "app-two"] } } } stage('parallel') { steps { script { pstages = [:] for (int i = 0; i < apps.size(); i++) { app = apps[i] pstages[app] = { stages { stage('Build application ') { agent { label 'build' } steps{ sh 'echo build' } } stage('Test application ') { agent { label 'test' } steps{ sh 'echo test' } } } } } parallel(pstages) } } } } }
I've answered a similar question at devops.stackexchange.com. I believe this is a bit overcomplicated and the Jenkins team should probably think of a way to simplify how dynamic stages (be they parallel or not) can be used in a declarative pipeline.