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I want to trigger a Jenkins build with Gerrit Trigger only when a change to a file in a specific sub-directory is made. For example...

├── subdir1
│   ├── trigger
│   ├── also-trigger
├── subdir2
│   ├── do-not-trigger

If any change to a file in subdir1 is made I want to trigger a build.

jeremyjjbrown
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2 Answers2

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Check Gerrit event in your Jenkins project configuration. In Gerrit settings Add File path with path subdir1 (of course you should set project and branches patterns). Then any changes in subdir1 will activate Jenkins, and changes from subdir2 will be ignore by Jenkins.

Maxim Suslov
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  • Not able to build project when only want to build subproject folder, it should come under project or file path? project e.g. value project_name_on_gerrit/subproject or in the filepath – Testing Singh Jun 01 '16 at 17:35
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    Most probably you forgot to set `Path` type in dropdown list instead of `Plain`. In my case I have set `Pattern (Plain): Repo name`, `Pattern (Path): **` (means any branch), `File path (Path): subdir1/**` (means any modified file inside `subdir1`). – Maxim Suslov Jun 27 '16 at 07:00
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There's an unexpected behaviour with Gerrit Trigger plugin when you select "Ref Updated" as the trigger event. It does not care about File Path option. But if you have a UI pull request way of doing things, it means you'll be merging changes through UI. So, you can try using "Change Merged" on "Trigger on" section.

Having a look at the parameters of the job, when a change-merged is triggered, there is information about the changeset that triggers the build. On the contrary, when you use ref-updated, there's no information about the changeset, so it is not possible to check for file inclusion. https://bugs.chromium.org/p/gerrit/issues/detail?id=2483

avallecillac
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