commit df01deaacff82b918b4f0ba774d5ad3087543629
author Christopher Tate <ctate@google.com> Tue Jun 09 20:45:02 2009 -0700
committer Christopher Tate <ctate@google.com> Wed Jun 10 10:53:24 2009 -0700
tree b148fc5ffd5abe0e45e7c6e8b502f630ad3931c4
parent 8f094ca7d045132ec93d4e903e784a3c077708c3

More restore plumbing, plus add suggested-backoff to transport API

Adds most of the code for a background-thread restore process, structured much
like the backup thread.  Broke some common functionality out into a helper
function for doing a synchronous wait for a requested agent to attach.

Added a method to IBackupTransport whereby the transport will be asked for
an opinion on whether this is a good time for a backup to happen.  It will
reply with the results of its policymaking around backoff intervals, time-of-day
selection, etc.