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Mr. Gerkins

Mr. Gerkins is a bot that automates the mundane tasks involved in managing your repository and release process so that the developers/ trusted committers can focus on the things that matter!

Mr. Gerkins can help you with the following repository management tasks:

  • Generation of release notes
  • Notifying pull request owners after tag creation
  • Notifying distribution lists after release
  • Identify and label pull requests as InnerSource

Integrating with Mr. Gerkins

1. Automated generation of Release Notes

Mr. Gerkins can generate release notes for you. It looks at the various pull requests (PRs) that are a part of the current tag and adds them to the release notes. You can sign up for this by including a pre build step in the job that you use for generating the tag build. There is a slight difference in the integration on Fusion vs. Jenkins

A. Jenkins
  • Install the Pre SCM Buildstep plugin in the Jenkins instance that your release job is located on.
  • Now open up the configuration of your maven release job and do the following: Under Build Environment enable Run buildstep before SCM runs and add Execute Shell Option.
  • Add the following script to the command section
#!/bin/bash
curl -d "{ \"branch\": \"$BRANCH\", \"release_version\": \"$MVN_RELEASE_VERSION\", \"repository_full_name\": \"$REPONAME\" }" -H "Content-Type: application/json" -X POST "$HOST_DETAILS/api/v1/release-notes/create"
exit 0

where, $BRANCH: Branch from where release tag is cut $MVN_RELEASE_VERSION: Release version of the component $REPONAME: full name of the repository. Ex: Payments-R/paymentapiplatformserv $HOST_DETAILS: IP/Host/URL where the bot is hosted

B. Fusion

Fusion does not support addition of plugins out of the box. Therefore we need to create another job that executes the generation and commiting of release notes. This commit has to happen before SCM clone is done. The bot will take care of calling the fusion job to perform the maven release.

  • In application.properties add owner-or-org/owner-or-org:fusion_job kvp to fusion.repositories paramter. fusion_job is your compoent's release job.
  • Create a new fusion job and add the following to Post Steps -> Execute Shell:
#!/bin/bash
curl -d "{ \"branch\": \"$BRANCH\", \"release_version\": \"$RELEASE_VERSION\", \"repository_full_name\": \"$REPOSITORY\", \"development_version\": \"$DEVELOP_VERSION\", \"is_dry_run\": $IS_DRY_RUN, \"scm_tag\": \"$SCM_TAG\", \"parameter\": \"[{\\\"name\\\": \\\"BRANCH\\\", \\\"value\\\": \\\"$BRANCH\\\"}, {\\\"name\\\": \\\"SKIP_TESTS\\\", \\\"value\\\": $SKIP_TESTS}]\" }" -H "Content-Type: application/json" -X POST "$HOST_DETAILS/api/v1/tag/create"
exit 0

2. Notify tag PR owners

Mr. Gerkins can notify all contributors, whose pull requests were included in the tag. The integration is same for both Jenkins and fusion

  • In Post Steps, include a Execute Shell step. This should be triggered only if the build was successful.
  • Add the following script:
#!/bin/bash
curl -d "{ \"branch\": \"$BRANCH\", \"release_version\": \"$MVN_RELEASE_VERSION\", \"repository_full_name\": \"Payments-R/paymentsetupserv\" }" -H "Content-Type: application/json" -X POST "$HOST_DETAILS/api/v1/tag/notify-authors"
exit 0

3. Notify DL after release

Mr. Gerkins can notify a DL, once a release has been drafted on Github will all the details included.

  • In application.properties, add the repository-full-name:dl-email to email.release_notify_dl parameter.
  • Under Settings of the repository, open the Webhooks & services tab.
  • Add a Webhook to recieve Release event. The Payload URL should be:
http://{$HOST-DETAILS}/webhook/release

4. Labelling InnerSource PRs

Mr. Gerkins can identify and label pull requests raised by contributors outside the team. This helps if your team is involved in the inner sourcing program. There are two ways of achieving this:

  • List the user id of your team members under github.team-members parameter in application.properties
  • By specifying a team dl. Make the following changes in application.properties
dl-manager.token={dl manager access token}
dl-manager.executor={Authorized DL manager api caller user id}
dl-manager.service-url=https://dlmanager.mycompany.com
dl-manager.target-dl={your teams dl}
dl-manager.enabled=true

({} is part of placeholder string) Currently this approach doesn't work, since DL Manager API doesn't support calls from C3 instances. Need to work with them to support this. Now subscribe to the PR webhooks notification.

  • Under Settings of the repository, open the Webhooks & services tab.
  • Add a Webhook to recieve Pull Request event. The Payload URL should be:
http://{$HOST-DETAILS}/webhook/pull-request

License

Mr. Gerkins is licensed under MIT license. The license can be found here.

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