Using GitLab CI/CD with a Bitbucket Cloud repository (PREMIUM)

GitLab CI/CD can be used with Bitbucket Cloud by:

1. Creating a CI/CD project.
2. Connecting your Git repository via URL.

To use GitLab CI/CD with a Bitbucket Cloud repository:

1. In GitLab create a CI/CD for external repo, select Repo by URL and create the project.

GitLab will import the repository and enable Pull Mirroring.

1. In GitLab create a Personal Access Token with api scope. This will be used to authenticate requests from the web hook that will be created in Bitbucket to notify GitLab of new commits.

2. In Bitbucket, from Settings > Webhooks, create a new web hook to notify GitLab of new commits.

The web hook URL should be set to the GitLab API to trigger pull mirroring, using the Personal Access Token we just generated for authentication.

text https://gitlab.com/api/v4/projects/<NAMESPACE>%2F<PROJECT>/mirror/pull?private_token=<PERSONAL_ACCESS_TOKEN>

The web hook Trigger should be set to 'Repository Push'.

After saving, test the web hook by pushing a change to your Bitbucket repository.

1. In Bitbucket, create an App Password from Bitbucket Settings > App Passwords to authenticate the build status script setting commit build statuses in Bitbucket. Repository write permissions are required.

1. In GitLab, from Settings > CI/CD > Environment variables, add variables to allow communication with Bitbucket via the Bitbucket API:

BITBUCKET_ACCESS_TOKEN: the Bitbucket app password created above.

BITBUCKET_USERNAME: the username of the Bitbucket account.

BITBUCKET_NAMESPACE: set this if your GitLab and Bitbucket namespaces differ.

BITBUCKET_REPOSITORY: set this if your GitLab and Bitbucket project names differ.

1. In Bitbucket, add a script to push the pipeline status to Bitbucket.

Note: changes made in GitLab will be overwritten by any changes made upstream in Bitbucket.

Create a file build_status and insert the script below and run chmod +x build_status in your terminal to make the script executable.

```bash #!/usr/bin/env bash

# Push GitLab CI/CD build status to Bitbucket Cloud

if [ -z "$BITBUCKET_ACCESS_TOKEN" ]; then echo "ERROR: BITBUCKET_ACCESS_TOKEN is not set" exit 1 fi if [ -z "$BITBUCKET_USERNAME" ]; then echo "ERROR: BITBUCKET_USERNAME is not set" exit 1 fi if [ -z "$BITBUCKET_NAMESPACE" ]; then echo "Setting BITBUCKET_NAMESPACE to $CI_PROJECT_NAMESPACE" BITBUCKET_NAMESPACE=$CI_PROJECT_NAMESPACE fi if [ -z "$BITBUCKET_REPOSITORY" ]; then echo "Setting BITBUCKET_REPOSITORY to $CI_PROJECT_NAME" BITBUCKET_REPOSITORY=$CI_PROJECT_NAME fi

BITBUCKET_API_ROOT="https://api.bitbucket.org/2.0" BITBUCKET_STATUS_API="$BITBUCKET_API_ROOT/repositories/$BITBUCKET_NAMESPACE/$BITBUCKET_REPOSITORY/commit/$CI_COMMIT_SHA/statuses/build" BITBUCKET_KEY="ci/gitlab-ci/$CI_JOB_NAME"

case "$BUILD_STATUS" in running) BITBUCKET_STATE="INPROGRESS" BITBUCKET_DESCRIPTION="The build is running!" ;; passed) BITBUCKET_STATE="SUCCESSFUL" BITBUCKET_DESCRIPTION="The build passed!" ;; failed) BITBUCKET_STATE="FAILED" BITBUCKET_DESCRIPTION="The build failed." ;; esac

echo "Pushing status to $BITBUCKET_STATUS_API..." curl --request POST $BITBUCKET_STATUS_API \ --user $BITBUCKET_USERNAME:$BITBUCKET_ACCESS_TOKEN \ --header "Content-Type:application/json" \ --silent \ --data "{ \"state\": \"$BITBUCKET_STATE\", \"key\": \"$BITBUCKET_KEY\", \"description\": \"$BITBUCKET_DESCRIPTION\",\"url\": \"$CI_PROJECT_URL/-/jobs/$CI_JOB_ID\" }" ```

1. Still in Bitbucket, create a .gitlab-ci.yml file to use the script to push pipeline success and failures to Bitbucket.

```yaml stages: - test - ci_status

unit-tests: script: - echo "Success. Add your tests!"

success: stage: ci_status before_script: - "" after_script: - "" script: - BUILD_STATUS=passed BUILD_KEY=push ./build_status when: on_success

failure: stage: ci_status before_script: - "" after_script: - "" script: - BUILD_STATUS=failed BUILD_KEY=push ./build_status when: on_failure ```

GitLab is now configured to mirror changes from Bitbucket, run CI/CD pipelines configured in .gitlab-ci.yml and push the status to Bitbucket.