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annotate mercurial/hgweb/protocol.py @ 11584:1af96b090116

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protocol: unify changegroup commands - add sendchangegroup protocol helpers - handle commands with None results - move changegroup commands into wireproto.py
author Matt Mackall <mpm@selenic.com>
date Wed, 14 Jul 2010 15:43:20 -0500
parents 26c7d4fc31bf
children 5d907fbb9703
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1 #
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2 # Copyright 21 May 2005 - (c) 2005 Jake Edge <jake@edge2.net>
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3 # Copyright 2005-2007 Matt Mackall <mpm@selenic.com>
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4 #
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5 # This software may be used and distributed according to the terms of the
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6 # GNU General Public License version 2 or any later version.
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7
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8 import cStringIO, zlib, tempfile, errno, os, sys, urllib, copy
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9 from mercurial import util, streamclone, pushkey
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10 from mercurial.node import bin, hex
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11 from mercurial import changegroup as changegroupmod
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12 from common import ErrorResponse, HTTP_OK, HTTP_NOT_FOUND, HTTP_SERVER_ERROR
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13
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14 # __all__ is populated with the allowed commands. Be sure to add to it if
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15 # you're adding a new command, or the new command won't work.
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16
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17 __all__ = [
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18 'lookup', 'heads', 'branches', 'between', 'changegroup',
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19 'changegroupsubset', 'capabilities', 'unbundle', 'stream_out',
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20 'branchmap', 'pushkey', 'listkeys'
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21 ]
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22
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23 HGTYPE = 'application/mercurial-0.1'
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24 basecaps = 'lookup changegroupsubset branchmap pushkey'.split()
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25
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26 def capabilities(repo, req):
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27 caps = copy.copy(basecaps)
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28 if streamclone.allowed(repo.ui):
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29 caps.append('stream=%d' % repo.changelog.version)
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30 if changegroupmod.bundlepriority:
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31 caps.append('unbundle=%s' % ','.join(changegroupmod.bundlepriority))
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32 rsp = ' '.join(caps)
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33 req.respond(HTTP_OK, HGTYPE, length=len(rsp))
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34 yield rsp
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35
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36 def unbundle(repo, req):
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37
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38 proto = req.env.get('wsgi.url_scheme') or 'http'
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39 their_heads = req.form['heads'][0].split(' ')
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40
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41 def check_heads():
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42 heads = map(hex, repo.heads())
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43 return their_heads == [hex('force')] or their_heads == heads
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44
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45 # fail early if possible
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46 if not check_heads():
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47 req.drain()
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48 raise ErrorResponse(HTTP_OK, 'unsynced changes')
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49
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50 # do not lock repo until all changegroup data is
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51 # streamed. save to temporary file.
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52
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53 fd, tempname = tempfile.mkstemp(prefix='hg-unbundle-')
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54 fp = os.fdopen(fd, 'wb+')
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55 try:
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56 length = int(req.env['CONTENT_LENGTH'])
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57 for s in util.filechunkiter(req, limit=length):
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58 fp.write(s)
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59
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60 try:
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61 lock = repo.lock()
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62 try:
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63 if not check_heads():
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64 raise ErrorResponse(HTTP_OK, 'unsynced changes')
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65
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66 fp.seek(0)
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67 header = fp.read(6)
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68 if header.startswith('HG') and not header.startswith('HG10'):
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69 raise ValueError('unknown bundle version')
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70 elif header not in changegroupmod.bundletypes:
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71 raise ValueError('unknown bundle compression type')
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72 gen = changegroupmod.unbundle(header, fp)
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73
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74 # send addchangegroup output to client
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75
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76 oldio = sys.stdout, sys.stderr
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77 sys.stderr = sys.stdout = cStringIO.StringIO()
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78
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79 try:
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80 url = 'remote:%s:%s:%s' % (
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81 proto,
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82 urllib.quote(req.env.get('REMOTE_HOST', '')),
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83 urllib.quote(req.env.get('REMOTE_USER', '')))
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84 try:
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85 ret = repo.addchangegroup(gen, 'serve', url, lock=lock)
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86 except util.Abort, inst:
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87 sys.stdout.write("abort: %s\n" % inst)
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88 ret = 0
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89 finally:
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90 val = sys.stdout.getvalue()
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91 sys.stdout, sys.stderr = oldio
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92 req.respond(HTTP_OK, HGTYPE)
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93 return '%d\n%s' % (ret, val),
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94 finally:
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95 lock.release()
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96 except ValueError, inst:
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97 raise ErrorResponse(HTTP_OK, inst)
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98 except (OSError, IOError), inst:
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99 error = getattr(inst, 'strerror', 'Unknown error')
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100 if not isinstance(error, str):
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101 error = 'Error: %s' % str(error)
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102 if inst.errno == errno.ENOENT:
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103 code = HTTP_NOT_FOUND
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104 else:
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105 code = HTTP_SERVER_ERROR
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106 filename = getattr(inst, 'filename', '')
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107 # Don't send our filesystem layout to the client
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108 if filename and filename.startswith(repo.root):
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109 filename = filename[len(repo.root)+1:]
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110 text = '%s: %s' % (error, filename)
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111 else:
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112 text = error.replace(repo.root + os.path.sep, '')
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113 raise ErrorResponse(code, text)
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114 finally:
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115 fp.close()
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116 os.unlink(tempname)
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117
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118 def stream_out(repo, req):
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119 req.respond(HTTP_OK, HGTYPE)
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120 try:
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121 for chunk in streamclone.stream_out(repo):
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122 yield chunk
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123 except streamclone.StreamException, inst:
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124 yield str(inst)