Trigger jobs in gitlab-ci on merge request

Question

It's posible run a job from gitlab-ci only on merge request? Now, we have a big monolitic project with heavy tests, but we only want to run the test before merging to the branch master.

Solution 1

This is now possible. This has been introduced in GitLab 11.6.

Solution 2

Well, it's not built in currently however it's not impossible to do it yourself. Gitlab allows to trigger a job. It also supports webhooks on merge requests. However webhooks don't support variable in URIs and triggers can't read request body so you'd have to create a script that will act like a middle-man here:

1. Webhook on merge request calls to your script
2. Script parses the request and calls a triggers in gitlab with correct REF

3. Trigger runs the job that is marked with;

   only: -triggers

It's a bit hacky but it's working and easy to implement.

Solution 3

For the moment, no. You should subscribe the issue to see if and when they will be available (and if your company is a enterprise customer, maybe you can contact them to ask to prioritize the implementation)

Comments

[ar099968]

How can I parse the request with the script? Where I have to place the script?

[Jakub Kania]

@CescoBagnoli you need a web server that is accessible to your gitlab ci instance and some server side scripting to do it. You could use Lambda. You could use this gh project: github.com/MelwinKfr/gitlab-webhook-translator