For sync, saves 1 ssh connection per remote. For remotedaemon, the same
ssh connection that is already open to run git-annex-shell notifychanges
is reused to pull from the remote.
Only potential problem is that this also enables connection caching
when the assistant syncs with a ssh remote. Including the sync it does
when a network connection has just come up. In that case, cached ssh
connections are likely to be stale, and so using them would hang.
Until I'm sure such problems have been dealt with, this commit needs to
stay on the remotecontrol branch, and not be merged to master.
This commit was sponsored by Alexandre Dupas.
* Remote system might be available, and connection get lost. Should
reconnect, but needs to avoid bad behavior (ie, constant reconnect
attempts.) Use exponential backoff.
* Detect if old system had a too old git-annex-shell, and show the user
a nice message in the webapp. Required parsing error messages, so perhaps
this code shoudl be removed once enough time has passed..
* Switch the protocol to using remote URI's, rather than remote names.
Names change. Also avoids issues with serialization of names containing
whitespace.
This is nearly ready for merge into master now. I'd still like to make the ssh
transport smarter about reusing ssh connection caching during git pull.
This commit was sponsored by Jim Paris.
So far, handling connecting to git-annex-shell notifychanges, and
pulling immediately when a change is pushed to a remote.
A little bit buggy (crashes after the first pull), but it already works!
This commit was sponsored by Mark Sheppard.
This will be used by the remote-daemon to quickly tell when changes have
been pushed from some other repository into a ssh remote.
Adjusted the remote-daemon protocol to communicate changed shas, rather
than git branch refs. This way, it can easily check if a sha is new.
This commit was sponsored by Carlos Trijueque Albarran.
