How do I trigger scripts on a merge or when a branch is deleted?

Question

I am using jenkins multibranch pipelines. If a branch is merged and deleted jenkins removes the branch from the pipeline as well.

This is great, but I want to run a command/script when a branch is removed, how can I have jenkins run a command when a branch is removed? Is there a way to have jenkins trigger a job before it removes the branch?

Edit: I should add I'm using bitbucket. It would be neat if Jenkins could trigger an event when purging a branch of a multibranch pipeline. Ideally it wouldn't matter what my git provider is.

Solution

"This is great, but I want to run a command/script when a branch is removed, how can I have jenkins run a command when a branch is removed?"

You will need to use a webhook for this, I use the following settings in Github:

Bitbucket only supports the following webhooks:

"Is there a way to have Jenkins trigger a job before it removes the branch?"

Not that I can see, but in Github you can create a custom label and trigger a job via a webhook when the label is added to a branch.

Comments

[Andy]

For Bitbucket: dengelonsoftware.blogspot.fi/2017/01/…

[Andy]

How about webhooks?confluence.atlassian.com/bitbucket/…

[user2529307]

Ok but how do you detect in Jenkins that you're building because of a branch deletion vs a push to the branch?