VOLTHA Components: ONOS
=======================

A few different processes exist for releasing the VOLTHA project and componets.
Some are released through github using branches/tags/downloads.
Others are released as packages on maven central.

A jenkins job exists for releasing ONOS app

- Maven central based release
- Release process requires some manual steps.

- `Jenkins Release Job <https://jenkins.opencord.org/job/onos-app-release/>`_

  - Initiate a build with parameters for the target component.

    - Use repository name not name of the app itself.
    - Specify appVersion and apiVersion stored in the pom.xml file.

  - Job will modify pom.xml and create pull requests based on version strings.

    - NOTE: Two pull requests are created to modify pom.xml
      - One for release (x.y.z)
      - The second to revert to non-release version (x.(y+1).z-SNAPSHOT)
      - Approve and merge the release version while performing the release.
      - Once published approve the 2nd version change to re-attach the -SNAPSHOT suffix.

    - Version x.y.z-SNAPSHOT is the default non-release version.
    - Jenkins job will morph x.y.z-SNAPSHOT into x.y.z for the release.
    - A gerrit pull request will be created under the release requestor(s) name.

  - Approve the pom.xml pull request and merge.
  - Merge will trigger (https://jenkins.opencord.org/job/maven-publish_sadis/ for sadis app, similar link for olt and other apps) that publish the artifact in the staging repo on oss.sonatype.org, you need to release it.
  - Wait for build to complete
  - Merge the patches here https://gerrit.opencord.org/q/owner:do-not-reply%2540opennetworking.org

- Publish sonatype staging to maven central:

  - Visit `https://oss.sonatype.org <https://oss.sonatype.org>`_
  - Login with ONF credentials

    - Search for org.opencord
    - Click on "Staging repositories" (in the left side navigation)
    - In the top right search for last part of the app name (eg: olt)
    - Click release (top left bar, small button)
    - `Wait until artifacts are published <https://search.maven.org/search?q=g:org.opencord>`_

- Release all other apps/components (dependency hierarch):

  - Iterate over individual components in order of increasing dependency volume.

    - For ex olt depends on sadis
    - Begin by releasing sadis first
    - Once publishing has completed then olt can be released.

  - Verify expected dependent version has been released.
  - Modify pom.xml, update dep version(s) from x.z.y-SNAPSHOT to x.y.z
  - Commit and submit.