Sync AWS CodeCommit with Bitbucket by running pipeline

If you don’t have access to the official integration of the two apps and their repositories, just do your own sync.

Set SSH

To prepare your repositories, enable pipelines in your main repository. Then in repository options let Bitbucket create new ssh key, that will be stored in /opt/atlassian/pipelines/agent/ssh/id_rsa path. Try to add generated public key to IAM user AWS CodeCommit keys in Security credentials tab in AWS Console

Create config file

Create new config that will be later used in our pipeline with: nano ~/.ssh/configBitbucket

Host git-codecommit.*.amazonaws.com
 Hostname git-codecommit.eu-central-1.amazonaws.com
 User YOUR_USER_SSH_KEY
 IdentityFile /opt/atlassian/pipelines/agent/ssh/id_rsa

Later try to encode it with: base64 ~/.ssh/configBitbucket

Set Environment Variables

Now with base64 result, use it in Bitbucket Environment Variables

• CodeCommitConfig: OURBASE64CONFIG
• CodeCommitHost: git-codecommit.aws-region.amazonaws.com
• CodeCommitRepository: git-codecommit.aws-region.amazonaws.com/v1/repos/sample
• CodeCommitUser: SSHUSERPUBLIC_KEY

Create Pipeline Step

Provided env’s will be used in pipeline step below

definitions: 
  steps:
    - step: &sync-codecommit
        name: Sync changes to CodeCommit
        script:
          - echo $CodeCommitConfig > ~/.ssh/config.tmp
          - base64 -d  ~/.ssh/config.tmp > ~/.ssh/config
          - cat ~/.ssh/config
          - set +e
          - ssh -o StrictHostKeyChecking=no $CodeCommitHost
          - set -e
          - git remote add codecommit ssh://$CodeCommitRepository
          - git push codecommit $BITBUCKET_BRANCH --force

pipelines:
  default:
    - step: *sync-codecommit

Now, whenever you push to Bitbucket, it will also push to CodeCommit. For more details and better step-by-step configuration you can check also this Medium post