tree 6b33f06afc353b61ac2424a5496c64e16cd3e5f2
parent 7daa1a16273ad0c423959013a287225fb238ce65
author Christian Aistleitner <christian@quelltextlich.at> 1592605913 +0200
committer Christian Aistleitner <christian@quelltextlich.at> 1592637794 +0200

Extend CommitMessageFetcher to handle non-commit objects

CommitMessageFetcher expected to fetch for commit objects and failed
for non-commit objects.

With the advent of NoteDB, RefUpdatedEvents sometimes contain
non-commit objects. For example `refs/sequences/changes` typically
references a blob. When this ref gets updated, Gerrit sends a
corresponding RefUpdatedEvent with blobs as oldRev and newRev, which
used to trip up CommitMessageFetcher.

To avoid issues, we extend CommitMessageFetcher to work on ids of
arbitrary objects.

Change-Id: I892b9299f73e71660b1a7d77d7f282a4f563001e