2 import sys, glob, tempfile
3 from bup import options, git
4 from bup.helpers import *
9 o,output= output bloom filename (default: auto-generated)
10 d,dir= input directory to look for idx files (default: auto-generated)
13 def do_bloom(path, outfilename):
16 outfilename = os.path.join(path, 'bup.bloom')
19 if os.path.exists(outfilename):
20 b = git.ShaBloom(outfilename, readwrite=True)
28 for name in glob.glob('%s/*.idx' % path):
29 ix = git.open_idx(name)
30 ixbase = os.path.basename(name)
31 if b is not None and ixbase in b.idxnames:
37 total = add_count + rest_count
40 log("bloom: Nothing to do\n")
44 if len(b) != rest_count:
45 log("bloom: size %d != idx total %d, regenerating\n"
46 % (len(b), rest_count))
48 elif b.bits < git.MAX_BLOOM_BITS and \
49 b.pfalse_positive(add_count) > git.MAX_PFALSE_POSITIVE:
50 log("bloom: %d more entries => %.2f false positive, regenerating\n"
51 % (add_count, b.pfalse_positive(add_count)))
53 if b is None: # Need all idxs to build from scratch
55 add_count += rest_count
59 msg = b is None and 'creating from' or 'adding'
60 log('bloom: %s %d files (%d objects).\n' % (msg, len(add), add_count))
64 tf = tempfile.NamedTemporaryFile(
65 dir=path, suffix='bup.bloom', delete=False)
68 b = git.ShaBloom.create(tempname, readwrite=True, expected=add_count)
71 progress('Writing bloom: %d/%d\r' % (count, len(add)))
74 log('Writing bloom: %d/%d, done.\n' % (count, len(add)))
77 os.rename(tempname, outfilename)
82 o = options.Options(optspec)
83 (opt, flags, extra) = o.parse(sys.argv[1:])
86 o.fatal('no positional parameters expected')
88 git.check_repo_or_die()
90 do_bloom(opt.dir or git.repo('objects/pack'), opt.output)