tree 10e5b0bd95152b03d83d1cb457f1d8b594d7a56f
parent f531d0aeb90891c578c6ccafa6beab3f2629c7c0
author Dave Borowitz <dborowitz@google.com> 1457487944 -0500
committer Dave Borowitz <dborowitz@google.com> 1457973135 +0100

Include a UUID portion in NoteDb author identities

Author identities include per-server specific account IDs, so it is
not safe to mix IDs from different servers. Ensure each server only
ever produces identities with one ID during its lifetime, by writing
out a random UUID to gerrit.config as gerrit.serverId. This happens
during init, and optionally lazily during startup.

For now NoteDb changes can be migrated between servers as long as this
file is kept intact. Eventually, when federating changes between
servers, we will need come up with some mechanism for coalescing
various per-server identities into a single account, like the current
AccountExternalId mapping (except not exactly that because Shawn
regrets it). Such a mechanism will simply need to know how to handle
this kind of UUID format.

Change-Id: I9492c9c561892488703d15f7cde6094aa03f957b