from optparse import OptionParser
import lbs
+# We support up to "LBS Snapshot v0.2" formats, but are also limited by the lbs
+# module.
+FORMAT_VERSION = min(lbs.FORMAT_VERSION, (0, 2))
+
+def check_version(format):
+ ver = lbs.parse_metadata_version(format)
+ if ver > FORMAT_VERSION:
+ raise RuntimeError("Unsupported LBS format: " + format)
+
parser = OptionParser(usage="%prog [option]... command [arg]...")
parser.add_option("-v", action="store_true", dest="verbose", default=False,
help="increase verbosity")
previous = set()
for s in sorted(lowlevel.list_snapshots()):
d = lbs.parse_full(store.load_snapshot(s))
+ check_version(d['Format'])
segments = d['Segments'].split()
(size, added, removed) = (0, 0, 0)
for seg in segments:
store = lbs.ObjectStore(lowlevel)
for s in snapshots:
d = lbs.parse_full(store.load_snapshot(s))
+ check_version(d['Format'])
print d
print d['Segments'].split()
store.cleanup()
+# Produce a flattened metadata dump from a snapshot
+def cmd_read_metadata(snapshot):
+ get_passphrase()
+ lowlevel = lbs.LowlevelDataStore(options.store)
+ store = lbs.ObjectStore(lowlevel)
+ d = lbs.parse_full(store.load_snapshot(snapshot))
+ check_version(d['Format'])
+ metadata = lbs.read_metadata(store, d['Root'])
+ for l in metadata:
+ sys.stdout.write(l)
+ store.cleanup()
+
# Verify snapshot integrity
def cmd_verify_snapshots(snapshots):
get_passphrase()
for s in snapshots:
print "#### Snapshot", s
d = lbs.parse_full(store.load_snapshot(s))
+ check_version(d['Format'])
print "## Root:", d['Root']
metadata = lbs.iterate_metadata(store, d['Root'])
for m in metadata:
lowlevel = lbs.LowlevelDataStore(options.store)
store = lbs.ObjectStore(lowlevel)
snapshot = lbs.parse_full(store.load_snapshot(args[0]))
+ check_version(snapshot['Format'])
destdir = args[1]
paths = args[2:]
cmd_object_checksums(args)
elif cmd == 'read-snapshots':
cmd_read_snapshots(args)
+elif cmd == 'read-metadata':
+ cmd_read_metadata(args[0])
elif cmd == 'list-snapshot-sizes':
cmd_list_snapshot_sizes()
elif cmd == 'verify-snapshots':