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The delivery life-cycle of ALMA has scheduled releases for COMMON (ACS + ARCHIVE + ICD) every two months, which means that new releases of ACS follow the same schedule. The releases are of the form COMMON-<YYYYMMM> (For instance COMMON-2019JUN). Each of these releases consist in several tasks besides the actual implementation of the features/improvements/bug-fixes. These tasks are:

• Planning
  • Planning for the period
• Release Tasks
  • Create base ticket with the following tasks
  :
  • Associated with a branch Branch and pull request for updating the ACS release version
  • Confluence page for the release notes
  • Create Jenkins (or the build system in use) jobs for the release
    • ExtProds building job
    • ACS building job
    • ACS testing job
    • ACS Pre-release/Release job
• Implementation
  • Actual implementation of the tickets and tasks within the release schedule (1)
• Integration
  
  • Create integration branch for the release 'integration/COMMON-YYYYMMM'
  • Merge pull-requests into the integration branch
  • Prepare a build of the release
  • Execute tests for the release
• Publishing
  
  • Prepare one or more pre-releases during the two months period.
    • The last of them should include all the changes and be prepared at the end of the implementation phase as described in the release schedule (1)
    • If there are issues with the pre-release a new one must be prepared after bug-fixing any pending issue
  • Prepare the final release after the verification phase has finished according to release schedule (1)
• Reporting
  • Send a memorandum at the beginning of each month reporting the work done during the previous month
    • There's two memorandums per
    release
  Prepare the final
  • • release
  after the verification phase has finished according to release schedule (1)

Some releases may require additional care, like a special long-lived branch or additional Jenkins jobs, pre-releases, etc. An example of this is for the Java 11 upgrade. In the worst case scenario, this may imply repeating almost all the tasks for the special deliverable.

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