--- a/bin/pvlbackup-rsync-wrapper Sun Apr 22 12:31:26 2012 +0300
+++ /dev/null Thu Jan 01 00:00:00 1970 +0000
@@ -1,179 +0,0 @@
-#!/usr/bin/python
-
-"""
- SSH authorized_keys command="..." wrapper for rsync.
-
- Testing goes something like:
- sudo PYTHONPATH=. ./bin/pvlbackup-rsync-wrapper --command 'rsync --server --sender -ax . lvm:asdf:test' -vD
-
- sudo sh -c "PYTHONPATH=. rsync -e './bin/pvlbackup-rsync-wrapper --debug -C --' -ax testing:lvm:asdf:test test/tmp"
-"""
-
-from pvl.backup import __version__
-from pvl.backup.rsync import RSyncCommandFormatError
-from pvl.backup.invoke import InvokeError
-from pvl.backup import rsync, lvm
-
-import optparse
-import shlex
-import os
-import logging
-
-log = logging.getLogger()
-
-# command-line options
-options = None
-
-def parse_options (argv) :
- """
- Parse command-line arguments.
- """
-
-# import sys; sys.stderr.write("%s\n" % (argv, ))
-
- parser = optparse.OptionParser(
- prog = argv[0],
-
- # module docstring
- description = __doc__,
- version = __version__,
- )
-
- # logging
- general = optparse.OptionGroup(parser, "General Options")
-
- general.add_option('-q', '--quiet', dest='loglevel', action='store_const', const=logging.WARNING, help="Less output")
- general.add_option('-v', '--verbose', dest='loglevel', action='store_const', const=logging.INFO, help="More output")
- general.add_option('-D', '--debug', dest='loglevel', action='store_const', const=logging.DEBUG, help="Even more output")
- general.add_option('--debug-for', action='append', metavar='MODULE', help="Enable logging for the given logger/module name")
-
- parser.add_option_group(general)
-
- #
- parser.add_option('-c', '--command', metavar='CMD', default=os.environ.get('SSH_ORIGINAL_COMMAND'),
- help="rsync command to execute")
-
- parser.add_option('-C', '--given-command', action='store_true', default=False,
- help="use given command in `rsync -e %prog` format")
-
- parser.add_option('-R', '--readonly', action='store_true', default=False,
- help="restrict to read/source mode")
-
- parser.add_option('-P', '--restrict-path', metavar='PATH', default=False,
- help="restrict to given path prefix")
-
- # lvm options
- parser.add_option('-L', '--snapshot-size', metavar='SIZE', default=lvm.LVM_SNAPSHOT_SIZE,
- help="create snapshot with given LV size (used to store writes during backup)")
-
- parser.add_option('--snapshot-wait', metavar='SECONDS', default=lvm.LVM_SNAPSHOT_WAIT, type='float',
- help="wait for snapshot to settle after unmounting")
-
- # defaults
- parser.set_defaults(
- debug_for = [],
- loglevel = logging.INFO,
- )
-
- # parse
- options, args = parser.parse_args(argv[1:])
-
- # configure
- logging.basicConfig(
- format = '%(levelname)6s %(name)s : %(funcName)s : %(message)s',
- level = options.loglevel,
- )
-
- # enable debugging for specific targets
- for target in options.debug_for :
- logging.getLogger(target).setLevel(logging.DEBUG)
-
- return options, args
-
-def rsync_wrapper (command, restrict='lvm:') :
- """
- Wrap given rsync command.
-
- Parses the command, the source path, and then executes rsync within the source path (which may be a special
- pseudo-path with additional handling).
- """
-
- try :
- # parse the rsync command sent by the client
- rsync_cmd, rsync_options, source_path, dest_path = rsync.parse_command(command,
- restrict_readonly = options.readonly,
- )
-
- except RSyncCommandFormatError, e:
- log.error("invalid rsync command: %r: %s", command, e)
- return 2
-
- # XXX: the real path is always given second..
- path = dest_path
-
- try :
- # parse the source path as given by the client, may be a real path or pseudo-path
- source = rsync.parse_source(path,
- restrict_path = options.restrict_path,
- lvm_opts = dict(size = options.snapshot_size, wait = options.snapshot_wait),
- )
-
- except RSyncCommandFormatError, e:
- log.error("invalid rsync source: %r: %s", path, e)
- return 2
-
- try :
- # run rsync within the source (may perform additional stuff like snapshotting...)
- source.execute(rsync_options)
-
- except InvokeError, e:
- log.error("%s failed: %d", e.cmd, e.exit)
- return e.exit
-
- # ok
- return 0
-
-def main (argv) :
- global options
-
- # global options + args
- options, args = parse_options(argv)
-
- # command required
- if options.given_command :
- # from args (as given by `rsync -e pvlbackup-rsync-wrapper`) -> 'pvlbackup-rsync-wrapper <host> (<command> ...)'
- host = args.pop(0)
- command_parts = args
-
- log.debug("host=%r, using command from args: %r", host, command_parts)
-
- # args
- elif args :
- log.error("No arguments are handled")
- return 2
-
- elif options.command:
- # as given
- command_parts = shlex.split(options.command)
-
- else :
- log.error("SSH_ORIGINAL_COMMAND not given")
- return 2
-
-
- # run
- try :
- return rsync_wrapper(command_parts)
-
- except Exception, e:
- log.error("Internal error:", exc_info=e)
- return 3
-
- # ok
- return 0
-
-if __name__ == '__main__' :
- import sys
-
- sys.exit(main(sys.argv))
-