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jenkins.rst
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Jenkins integration

Important

Jenkins integration is only available in |RCEE|.

Below are few examples how to use dedicated Jenkins integrations with |RCEE|.

Configure Jenkins to check each commit after push

In order to configure Jenkins to trigger a build on a project after each push we need to create a project that will allow triggering a build from external sources.

In Jenkins, check Trigger builds remotely (e.g., from scripts) option. This gives now ability to trigger builds using an URL.

../images/jenkins-build-with-parameters.png

We also need to specify the parameters we're going to build the project with. In this example we'll use build with 3 parameters COMMIT_ID, BRANCH_HEAD and BRANCH. In Jenkins we need to add those 3 parameters, and check an option This project is parameterised

../images/jenkins-adding-build-parameters.png

Our final URL that |RCEE| Jenkins integration would use could look like this:

This URL will be triggered for each pushed branch, and will include the branch head commit id.

https://jenkins.server.com/job/test-build-commits/buildWithParameters?token=secret&BRANCH=${branch}&BRANCH_HEAD=${branch_head}

Or we can also use commit_id in this case URL will be triggered for each pushed commit in the branch, and will include the commit id.

https://jenkins.server.com/job/test-build-commits/buildWithParameters?token=secret&BRANCH=${branch}&COMMIT_ID=${commit_id}

Now we have all the required information to fetch/checkout and test our project. We can write an example build common in Jenkins.

../images/jenkins-build-command.png

Below is an example of the integration page we used on |RCEE| side.

../images/rhodecode-jenkins-integration-settings.png

Configure Jenkins to check each pull-request on creation and updates

Jenkins integration also allows checking created pull-requests inside |RCCE|. This is somehow a special case compared to testing commits. The pull-requests cannot be cloned from the repository. Instead |RCCE| exposes different links back to CI systems which store information on how to obtain the pull-request code.

On |RCCE| side we need to create a new integration that would use only two events:

  • pullrequest created
  • pullrequest commits updated

This will trigger the builds when pull-request is firstly created, and then each time pull-requests is updated and commits that it stores change.

In Jenkins, we should create at least two new build string parameters. We could use PR_ID and SHADOW_URL. Using those parameters, we can then create a customized build command to checkout a merged state of pull-request. And later on using rhodecode-api notify about the checks using the PR_ID.

../images/jenkins-pr-build-command.png

There's even a helper script we created to send notifications. Here's how the build on success could look like in Jenkins.

# clone the ci-notify script, and save it into our $BUILD_TAG/notify directory
hg clone https://code.rhodecode.com/ci-notify $BUILD_TAG/notify

# execute the script. $RC_TOKEN is auth-token for API
# url is your rhodecode instance, repoid is repository project which PR was opened
# status could be "approved" or "rejected"
python $BUILD_TAG/notify/notify.py \
    --token $RC_TOKEN \
    --url https://code.server.com \
    --repoid my-example-project \
    --prid $PR_ID \
    --status "approved" \
    --message "Build Succeeded: $BUILD_URL"

Below is also an example that we could use on |RCCE| side in the Jenkins integration settings. A Jenkins Trigger url that exposes all required information back to Jenkins CI server:

http://jenkins.server.com/job/my-project-pull-request-tests/buildWithParameters?token=secret&PR_ID=${pull_request_id}&PR_TITLE=${pull_request_title}&SHADOW_URL=${pull_request_shadow_url}&PR_UID=${pull_request_commits_uid}