3 from bup import hashsplit, git, options, client
4 from bup.helpers import *
8 bup split [-tcb] [-n name] [--bench] [filenames...]
10 r,remote= remote repository path
11 b,blobs output a series of blob ids
12 t,tree output a tree id
13 c,commit output a commit id
14 n,name= name of backup set to update (if any)
15 d,date= date for the commit (seconds since the epoch)
16 q,quiet don't print progress messages
17 v,verbose increase log output (can be used more than once)
18 noop don't actually save the data anywhere
19 copy just copy input to output, hashsplitting along the way
20 bench print benchmark timings to stderr
21 max-pack-size= maximum bytes in a single pack
22 max-pack-objects= maximum number of objects in a single pack
23 fanout= maximum number of blobs in a single tree
24 bwlimit= maximum bytes/sec to transmit to server
26 o = options.Options('bup split', optspec)
27 (opt, flags, extra) = o.parse(sys.argv[1:])
30 git.check_repo_or_die()
31 if not (opt.blobs or opt.tree or opt.commit or opt.name or
32 opt.noop or opt.copy):
33 o.fatal("use one or more of -b, -t, -c, -n, -N, --copy")
34 if (opt.noop or opt.copy) and (opt.blobs or opt.tree or
35 opt.commit or opt.name):
36 o.fatal('-N and --copy are incompatible with -b, -t, -c, -n')
39 git.verbose = opt.verbose - 1
42 hashsplit.max_pack_size = parse_num(opt.max_pack_size)
43 if opt.max_pack_objects:
44 hashsplit.max_pack_objects = parse_num(opt.max_pack_objects)
46 hashsplit.fanout = parse_num(opt.fanout)
50 client.bwlimit = parse_num(opt.bwlimit)
52 date = parse_date_or_fatal(opt.date, o.fatal)
57 is_reverse = os.environ.get('BUP_SERVER_REVERSE')
58 if is_reverse and opt.remote:
59 o.fatal("don't use -r in reverse mode; it's automatic")
60 start_time = time.time()
62 refname = opt.name and 'refs/heads/%s' % opt.name or None
63 if opt.noop or opt.copy:
64 cli = pack_writer = oldref = None
65 elif opt.remote or is_reverse:
66 if opt.remote and opt.remote.find(":") == -1:
67 o.fatal("--remote argument must contain a colon")
69 cli = client.Client(opt.remote)
70 except client.ClientError:
71 o.fatal("server exited unexpectedly; see errors above")
72 oldref = refname and cli.read_ref(refname) or None
73 pack_writer = cli.new_packwriter()
76 oldref = refname and git.read_ref(refname) or None
77 pack_writer = git.PackWriter()
79 files = extra and (open(fn) for fn in extra) or [sys.stdin]
81 shalist = hashsplit.split_to_shalist(pack_writer, files)
82 tree = pack_writer.new_tree(shalist)
85 for (blob, bits) in hashsplit.hashsplit_iter(files):
86 hashsplit.total_split += len(blob)
88 sys.stdout.write(str(blob))
89 megs = hashsplit.total_split/1024/1024
90 if not opt.quiet and last != megs:
91 progress('%d Mbytes read\r' % megs)
93 progress('%d Mbytes read, done.\n' % megs)
98 for (mode,name,bin) in shalist:
99 print bin.encode('hex')
101 print tree.encode('hex')
102 if opt.commit or opt.name:
103 msg = 'bup split\n\nGenerated by command:\n%r' % sys.argv
104 ref = opt.name and ('refs/heads/%s' % opt.name) or None
105 commit = pack_writer.new_commit(oldref, tree, date, msg)
107 print commit.encode('hex')
110 pack_writer.close() # must close before we can update the ref
114 cli.update_ref(refname, commit, oldref)
116 git.update_ref(refname, commit, oldref)
121 secs = time.time() - start_time
122 size = hashsplit.total_split
124 log('\nbup: %.2fkbytes in %.2f secs = %.2f kbytes/sec\n'
125 % (size/1024., secs, size/1024./secs))