annotate mercurial/streamclone.py @ 3412:f2de6b6bc57a

imported patch b1
author Matt Mackall <mpm@selenic.com>
date Tue, 17 Oct 2006 18:01:14 -0500
parents d1cbfe9e13cd
children d5dd0a2a44bc
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
2612
ffb895f16925 add support for streaming clone.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
1 # streamclone.py - streaming clone server support for mercurial
ffb895f16925 add support for streaming clone.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
2 #
ffb895f16925 add support for streaming clone.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
3 # Copyright 2006 Vadim Gelfer <vadim.gelfer@gmail.com>
ffb895f16925 add support for streaming clone.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
4 #
ffb895f16925 add support for streaming clone.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
5 # This software may be used and distributed according to the terms
ffb895f16925 add support for streaming clone.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
6 # of the GNU General Public License, incorporated herein by reference.
ffb895f16925 add support for streaming clone.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
7
ffb895f16925 add support for streaming clone.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
8 from demandload import demandload
ffb895f16925 add support for streaming clone.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
9 from i18n import gettext as _
ffb895f16925 add support for streaming clone.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
10 demandload(globals(), "os stat util")
ffb895f16925 add support for streaming clone.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
11
ffb895f16925 add support for streaming clone.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
12 # if server supports streaming clone, it advertises "stream"
ffb895f16925 add support for streaming clone.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
13 # capability with value that is version+flags of repo it is serving.
ffb895f16925 add support for streaming clone.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
14 # client only streams if it can read that repo format.
ffb895f16925 add support for streaming clone.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
15
ffb895f16925 add support for streaming clone.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
16 def walkrepo(root):
ffb895f16925 add support for streaming clone.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
17 '''iterate over metadata files in repository.
ffb895f16925 add support for streaming clone.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
18 walk in natural (sorted) order.
ffb895f16925 add support for streaming clone.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
19 yields 2-tuples: name of .d or .i file, size of file.'''
ffb895f16925 add support for streaming clone.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
20
ffb895f16925 add support for streaming clone.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
21 strip_count = len(root) + len(os.sep)
ffb895f16925 add support for streaming clone.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
22 def walk(path, recurse):
ffb895f16925 add support for streaming clone.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
23 ents = os.listdir(path)
ffb895f16925 add support for streaming clone.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
24 ents.sort()
ffb895f16925 add support for streaming clone.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
25 for e in ents:
ffb895f16925 add support for streaming clone.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
26 pe = os.path.join(path, e)
ffb895f16925 add support for streaming clone.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
27 st = os.lstat(pe)
ffb895f16925 add support for streaming clone.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
28 if stat.S_ISDIR(st.st_mode):
ffb895f16925 add support for streaming clone.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
29 if recurse:
ffb895f16925 add support for streaming clone.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
30 for x in walk(pe, True):
ffb895f16925 add support for streaming clone.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
31 yield x
ffb895f16925 add support for streaming clone.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
32 else:
ffb895f16925 add support for streaming clone.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
33 if not stat.S_ISREG(st.st_mode) or len(e) < 2:
ffb895f16925 add support for streaming clone.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
34 continue
ffb895f16925 add support for streaming clone.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
35 sfx = e[-2:]
ffb895f16925 add support for streaming clone.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
36 if sfx in ('.d', '.i'):
ffb895f16925 add support for streaming clone.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
37 yield pe[strip_count:], st.st_size
ffb895f16925 add support for streaming clone.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
38 # write file data first
ffb895f16925 add support for streaming clone.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
39 for x in walk(os.path.join(root, 'data'), True):
ffb895f16925 add support for streaming clone.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
40 yield x
ffb895f16925 add support for streaming clone.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
41 # write manifest before changelog
ffb895f16925 add support for streaming clone.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
42 meta = list(walk(root, False))
2623
d1cbfe9e13cd fix problem with uncompressed clone and python 2.3.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents: 2622
diff changeset
43 meta.sort()
d1cbfe9e13cd fix problem with uncompressed clone and python 2.3.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents: 2622
diff changeset
44 meta.reverse()
2612
ffb895f16925 add support for streaming clone.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
45 for x in meta:
ffb895f16925 add support for streaming clone.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
46 yield x
ffb895f16925 add support for streaming clone.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
47
ffb895f16925 add support for streaming clone.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
48 # stream file format is simple.
ffb895f16925 add support for streaming clone.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
49 #
ffb895f16925 add support for streaming clone.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
50 # server writes out line that says how many files, how many total
ffb895f16925 add support for streaming clone.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
51 # bytes. separator is ascii space, byte counts are strings.
ffb895f16925 add support for streaming clone.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
52 #
ffb895f16925 add support for streaming clone.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
53 # then for each file:
ffb895f16925 add support for streaming clone.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
54 #
ffb895f16925 add support for streaming clone.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
55 # server writes out line that says file name, how many bytes in
ffb895f16925 add support for streaming clone.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
56 # file. separator is ascii nul, byte count is string.
ffb895f16925 add support for streaming clone.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
57 #
ffb895f16925 add support for streaming clone.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
58 # server writes out raw file data.
ffb895f16925 add support for streaming clone.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
59
ffb895f16925 add support for streaming clone.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
60 def stream_out(repo, fileobj):
ffb895f16925 add support for streaming clone.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
61 '''stream out all metadata files in repository.
ffb895f16925 add support for streaming clone.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
62 writes to file-like object, must support write() and optional flush().'''
2621
5a5852a417b1 clone: disable stream support on server side by default.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents: 2612
diff changeset
63
2622
064aef9162cc rename stream hgrc option to compressed.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents: 2621
diff changeset
64 if not repo.ui.configbool('server', 'uncompressed'):
2621
5a5852a417b1 clone: disable stream support on server side by default.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents: 2612
diff changeset
65 fileobj.write('1\n')
5a5852a417b1 clone: disable stream support on server side by default.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents: 2612
diff changeset
66 return
5a5852a417b1 clone: disable stream support on server side by default.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents: 2612
diff changeset
67
5a5852a417b1 clone: disable stream support on server side by default.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents: 2612
diff changeset
68 fileobj.write('0\n')
5a5852a417b1 clone: disable stream support on server side by default.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents: 2612
diff changeset
69
2612
ffb895f16925 add support for streaming clone.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
70 # get consistent snapshot of repo. lock during scan so lock not
ffb895f16925 add support for streaming clone.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
71 # needed while we stream, and commits can happen.
ffb895f16925 add support for streaming clone.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
72 lock = repo.lock()
ffb895f16925 add support for streaming clone.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
73 repo.ui.debug('scanning\n')
ffb895f16925 add support for streaming clone.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
74 entries = []
ffb895f16925 add support for streaming clone.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
75 total_bytes = 0
ffb895f16925 add support for streaming clone.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
76 for name, size in walkrepo(repo.path):
ffb895f16925 add support for streaming clone.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
77 entries.append((name, size))
ffb895f16925 add support for streaming clone.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
78 total_bytes += size
ffb895f16925 add support for streaming clone.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
79 lock.release()
ffb895f16925 add support for streaming clone.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
80
ffb895f16925 add support for streaming clone.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
81 repo.ui.debug('%d files, %d bytes to transfer\n' %
ffb895f16925 add support for streaming clone.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
82 (len(entries), total_bytes))
ffb895f16925 add support for streaming clone.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
83 fileobj.write('%d %d\n' % (len(entries), total_bytes))
ffb895f16925 add support for streaming clone.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
84 for name, size in entries:
ffb895f16925 add support for streaming clone.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
85 repo.ui.debug('sending %s (%d bytes)\n' % (name, size))
ffb895f16925 add support for streaming clone.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
86 fileobj.write('%s\0%d\n' % (name, size))
ffb895f16925 add support for streaming clone.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
87 for chunk in util.filechunkiter(repo.opener(name), limit=size):
ffb895f16925 add support for streaming clone.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
88 fileobj.write(chunk)
ffb895f16925 add support for streaming clone.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
89 flush = getattr(fileobj, 'flush', None)
ffb895f16925 add support for streaming clone.
Vadim Gelfer <vadim.gelfer@gmail.com>
parents:
diff changeset
90 if flush: flush()