rsync - Jul 2005 - Feature request for rsync for running scripts

I was wondering if others might find it useful to have a parameter in the
rsync daemon config that would allow running a command on the server at
session start or at successful rsync completion.

For instance, this would allow a webpage to be automatically maintained (by
a script called by this method) with the timestamps of the last successful
rsync completion (no errors, all files transferred), which would be very
nice for keeping track of the state of mirrors.

I looked in the patches directory, and see there is already a
pre-post-exec.diff patch to allow for running scripts before and after the
chroot, but I'm more interested in running after successful rsync completion
than after the chroot.

The already present patch also doesn't allow for some method of passing
other useful information like the username of an authenticated user, or the
ipaddress of the rsync client, either of which might be useful in tracking
which mirrors were up to date.  Other info like the module name or even the
number/size of files transferred would also be useful.

This would also be very nice for doing things like queuing a backup job for
the module that was rsynced in the case of dirs pushed to the server for
the purposes of backups.  Maybe also a way to bypass the script if no files
were transferred, but the rsync was otherwise error-free.

Comments appreciated.

Evan

On Tue, 19 Jul 2005 12:10:18 -0700, Evan Harris <eharris@puremagic.com>  
wrote:
>
> I was wondering if others might find it useful to have a parameter in the
> rsync daemon config that would allow running a command on the server at
> session start or at successful rsync completion.
>
> For instance, this would allow a webpage to be automatically maintained  
> (by
> a script called by this method) with the timestamps of the last  
> successful
> rsync completion (no errors, all files transferred), which would be very
> nice for keeping track of the state of mirrors.
Couldn't you just do this on the client side?

rsync...
ssh commands to run after rsync...

On Tue, Jul 19, 2005 at 02:10:18PM -0500, Evan Harris
wrote:
> I looked in the patches directory, and see there is already a
> pre-post-exec.diff patch to allow for running scripts before and after
> the chroot, but I'm more interested in running after successful rsync
> completion than after the chroot.
That patch does run a command after the completion of the rsync (whether
it was successful or not).

I've just upgraded it to add more environment variables (such as module
name, module path, host name, host IP, user name, exit status).  I also
changed where the post-rsync exec happens so that both the pre- and
post-xfer are both now run by the user that runs the daemon (not the
module's user) and without any chroot constraints (the old patch was
simpler, and it made the post-xfer command run in a more restricted
setting than the pre-xfer command).  You can see the latest patch here:

    http://rsync.samba.org/ftp/unpacked/rsync/patches/pre-post-exec.diff
> Maybe also a way to bypass the script if no files were transferred,
> but the rsync was otherwise error-free.
The current patch doesn't include any info on transfer direction nor any
transfer stats (which might not be easy to do).

..wayne..