Selecting other branch instead of master as a source repository on AWS CodeBuild

Question

How to specify different branch instead of master branch on AWS code deploy while using Github as source provider ? I see there is no option to select in the console to select branch(may be I missed).

I tried to checkout to different branch while we are in the pre_build phase, but it failed in the Download Source phase itself as the master branch doesn't have YAML file.

version: 0.1
phases:
  install:
    commands:
      - apt-get update -y
  pre_build:
    commands:
      - git checkout testbranch

Solution 1

You can specify the branch in the "source version" field when you start a build. It will accept anything that "git checkout" accepts: commit ID, branch, tag, etc.

Solution 2

If you want to change the default branch (when not supplying a version in the individual build) from master to something else you have to use the AWS CLI as there is apparently no option in the UI:

aws codebuild update-project --name your_project_name --source-version your_default_branch

Adding a new source version at build time will still override this value per the docs:

If sourceVersion is specified at the project level, then this sourceVersion (at the build level) takes precedence.

https://docs.aws.amazon.com/codebuild/latest/APIReference/API_StartBuild.html#CodeBuild-StartBuild-request-sourceVersion

Comments

[bravokeyl]

aws-codebuild will be a prefect tag for this, but I don;t have enough rep to create it.

[Sachin Vairagi]

Can you please post complete answer? accepted answer is not working for me. Thanks!

[bravokeyl]

Where is this source version field, I'm unable to find?

[Illiax]

This doesn't work for me, it only accepts commit ids

[Illiax]

@ClareLiguori It started working. I think it was that i was using 'enter key' after typing the branch instead of clicking in continue below.

[Matthew Hegarty]

Doesn't work for me either. branches are ok, but tags or ids don't work. Issue raised here

[Sachin Vairagi]

I just entered branch name in Source version but the build is triggering even I am pushing codes on different branch