e71b1c8c78
All the DB operations in this method operate on a single commit, so make it a transaction on this commit. This has the advantage in googlesource.com's DB implementation of making the various updates asynchronous and hopefully improving latency. Allow various exceptions to propagate out of the inner method calls and fail the transaction. This means we will not necessarily forge ahead with the update in cases where we would have before, but there were a fair number of ignored errors that could lead to inconsistent state. This hopefully cuts down on the number of possible inconsistencies. Change-Id: Ie8a18185ba4b5d9cd936dd4963b68d0ae9579d5a