Gitlab merge request for CICD pipeline

GitLab CI/CD
1

Hello Team,

Please suggest me the rule condition for CICD pipeline trigger only though merge request only not through branch updates.

Currently I have applied the below condition…

rules:
if: $CI_PIPELINE_SOURCE == PUSH && $CI_COMMIT_BRANCH == :branch name
: event for pipeline trigger.

I want some additional condition to avoid pipeline trigger through branch file updates.

My expectation: pipeline should trigger only from merge requests not from any event is happening at branch.

Below solutions , i tried for the above case but its not working

  1. CI_MERGE_REUEST_ predefined parameters.
  2. only : - merge_requests

Please suggest any solution for the above mentioned issue that is really helping me.

Regards,
Komal

2

Hi @komalbokariya

rules:
  - if: '$CI_PIPELINE_SOURCE == "merge_request_event"'

You can see available values in here

3

Hello GitLab Team,

This value is getting populated when merge request is open. I want to trigger CICD pipeline when merge event completed.

Please suggest what all parameters i can use in rules condition.

Regards,
Komal

4

Merging a Merge Request creates a push event to the target branch. There is no difference between branch update commit and Merged MR commit. It is still a commit.
You can try to set your rules around commit message CI_COMMIT_MESSAGE

5

What specific rule condition can i setup around CI_COMMIT_MESSAGE? . Please suggest some examples that would be helping me.

6

Example: Agree with your team that each MR commit message must start with ‘MR:’
Setup regex rule - if: '$CI_COMMIT_MESSAGE =~ /^MR:.*/' that would trigger pipeline if commit message starts with ‘MR:’

7

Thanks Peter.

I have different query regarding with group level custom project template creation

I am looking to create group level custom project template

This option is not available in my gitlab instance → General settings-> Advanced → custom project templates.

I will achieve this by using python gitlab api https://python-gitlab.readthedocs.io. Please let me know which is relevant API which can be useful to create custom project templates.

8

HEllo Peter,

AS per your suggestions, i have setup this condition to trigger the job

if: ‘$CI_PIPELINE_SOURCE == “push” && $CI_COMMIT_BRANCH ==:branch_name && $CI_COMMIT_MESSAGE =~ /^MR:.*/’

I have given MR in start when i commit a file in repository & in a title when i creating merge request from source repository to destination repository. Please let me know , am i doing correctly? Where should i give as MR in start so it will populate in a variable $CI_COMMIT_MESSAGE?

9

I can enter atrt with MR in branch commit as well . how does it differs?