New releases can be created by Egeria maintainers that have the appropriate access on Azure Pipelines.
Overall Release Policy
- Aim to release approximately every month
- Typically target end of month for external availability
- Will only release an update between releases in exceptional circumstances
- Preserves backwards compatibility as much as possible
- Try and maintain regular heartbeat - even if completion of some features continues in a subsequent release
- master kept open for new code features
Obtaining releases / artifacts
- Maven Central - https://mvnrepository.com/artifact/org.odpi.egeria - typically used by other developers integrating with our code
- Github Release - https://github.com/odpi/egeria/releases - source code in zip & tar.gz formats
- Git - ‘git checkout Vx.y’ to get version as-shipped (each release is tagged at the point it is shipped)
- Release notes are available online (in master) at https://github.com/odpi/egeria/tree/master/release-notes.
## Release process summary
- Agree schedule
- Track remaining issues & PRs
- Create branch
- Update master from x.y-SNAPSHOT to x.z-SNAPSHOT
- Test, Merge any remaining required changes into branch
- Update branch’s release version from x.y-SNAPSHOT to x.y
- Create a release in Azure dev pipelines
- Final testing
- Approve release
Release Process in detail
1. Agreement of overall schedule
- Agree on appropriate dates for branching given expected duration for testing, vacation/public holidays
- Typically allow 1-2 weeks between branching and availability
- Communicate with team on regular calls, and via #egeria-github on slack
- In the last week before branching discuss holding off on any big changes in master that could destabilize the codebase
2. Tracking remaining issues (stability)
- Ensure any required issues/PRs for the release have the correct milestone set
- Move any issues/PRs not expected to make/not required for the release to a future milestone
- Aim to branch when most issues/PRs are complete to minimize backporting from master, but not at the expense of impacting ongoing master development
- Agree final branch date/criteria
3. Create branch
- Checkout master
git checkout master
- Ensure local update
git pull upstream master
- Create branch
git branch egeria-release-x.y
- Push to upstream
git push upstream egeria-release-x.y
4. Update master version & cleanup notes
git checkout master
git pull upstream master
- Edit all files (command line or IDE) to replace ‘x.y-SNAPSHOT’ with the next version, ie change ‘1.3-SNAPSHOT’ to ‘2.9-SNAPSHOT’. Most of the changes are in pom.xml files, however some code & documentation also has references to our versions and all need modifying.
- If using an IDE like IntelliJ make sure you have all hits by searching again as by default only a limited number of hits are shown - see https://youtrack.jetbrains.com/issue/IDEA-157855 for Intellij advice.
- Now remove all the release notes from the ‘release-notes’ directory other than README.md - so users will always get directed to the latest in master
- Create a PR, have reviewed/approved & merged as usual - aim to do this as quickly as reasonable so that there is no potential for version clash
5. Test and Merge
- Run appropriate tests for the release. For example in addition to automated tests - Check notebooks, run the CTS & check for compliance, check the User Interface.
- Raise issues for any changes required as usual
- Note that approval is required for changes going into a release branch
- PR builds are run as usual, however merge builds, sonar etc do not run
- To backport changes from master, first wait until the PR is merged into master, then use
git cherrypick -s <commithash>to apply to egeria-release-x.y, then push as usual.
- In some cases a merge commit will need to be made using
git cherrypick -s -m 1 <commithash>
- If code has diverged significantly a manual recode may be easiest
4. Update branch version
- Aim to make this change when the code appears to be ready to ship apart from final tests in order to avoid version confusion
git checkout egeria-release-x.y
git pull upstream egeria-release-x.y
- Edit all files (command line or IDE) to replace ‘x.y-SNAPSHOT’ with ‘x.y’ ie removing the -SNAPSHOT designation. Most of the changes are in pom.xml files, however some code & documentation also has references to our versions and all need modifying.
- Commit, and do not make any other changes.
- Create a PR, have reviewed/approved & merged as usual
5. Create a release in Azure dev pipelines
- Navigate to https://dev.azure.com/odpi/egeria/_build & ensure logged on (top right) - you will need special priviliges for this. Contact the Egeria team leaders for access
- Click on ‘Egeria - m.n’ in the list of releases
- Click on ‘Edit’
- Change ‘Default branch’ to the desired release x.y & save
- Click ‘Create release’ & leave settings at default (optionally add a comment) then click create
- The release process will now run - by starting a build
- Test maven artifacts will be available at https://odpi.jfrog.io/odpi/egeria-staging/org/odpi/egeria/
- Ensure any final tests are run
6. Finalizing the release
- Approve the release by responding to the automated email (or reject, and go back to the previous step)
- tag the release in git
git tag -a Vx.y -m "Release x.y"
- The final steps will now run & push artifacts first to bintray, and then maven central
- Meanwhile create the git release at https://github.com/odpi/egeria/releases. Use ‘Vx.y’ as the tag, and ensure the correct branch is set for the target ie egeria-release-x.y
- Fill in the release notes using a title of ‘Release x.y’ and copy the notes from the appropriate release notes at https://github.com/odpi/egeria/tree/master/release-notes
- Artifacts will be available on maven central within around half a day.
- Source archives will be added to the release on git within an hour or so.
- Azure pipelines - https://dev.azure.com/odpi/egeria/_build
Release Process Troubleshooting
The Linux Foundation maintains a Knowledge Base (KB) of articles on possible issues that may arise during the release process:
- Including a New Package in the Release
- Fixing Package Corruption
- Getting Packages Synced to Maven-Central
If the KB articles are not able to fix the problem, please open a ticket with Linux Foundation support
License: CC BY 4.0, Copyright Contributors to the ODPi Egeria project.