Mercurial > hg
annotate mercurial/wireproto.py @ 14517:5a931246afc5
test-copy2: add case for moving a missing file
author | Adrian Buehlmann <adrian@cadifra.com> |
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date | Thu, 02 Jun 2011 19:43:17 +0200 |
parents | 5adb52524779 |
children | 84094c0d2724 |
rev | line source |
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1 # wireproto.py - generic wire protocol support functions |
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2 # |
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3 # Copyright 2005-2010 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 urllib, tempfile, os, sys |
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9 from i18n import _ |
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10 from node import bin, hex |
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11 import changegroup as changegroupmod |
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12 import repo, error, encoding, util, store |
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13 import pushkey as pushkeymod |
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14 |
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15 # list of nodes encoding / decoding |
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16 |
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17 def decodelist(l, sep=' '): |
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18 if l: |
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19 return map(bin, l.split(sep)) |
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20 return [] |
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21 |
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22 def encodelist(l, sep=' '): |
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23 return sep.join(map(hex, l)) |
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24 |
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25 # client side |
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26 |
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27 class wirerepository(repo.repository): |
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28 def lookup(self, key): |
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29 self.requirecap('lookup', _('look up remote revision')) |
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30 d = self._call("lookup", key=encoding.fromlocal(key)) |
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31 success, data = d[:-1].split(" ", 1) |
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32 if int(success): |
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33 return bin(data) |
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34 self._abort(error.RepoError(data)) |
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35 |
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36 def heads(self): |
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37 d = self._call("heads") |
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38 try: |
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39 return decodelist(d[:-1]) |
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40 except ValueError: |
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41 self._abort(error.ResponseError(_("unexpected response:"), d)) |
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42 |
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43 def known(self, nodes): |
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44 n = encodelist(nodes) |
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45 d = self._call("known", nodes=n) |
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46 try: |
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47 return [bool(int(f)) for f in d] |
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48 except ValueError: |
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49 self._abort(error.ResponseError(_("unexpected response:"), d)) |
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50 |
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51 def branchmap(self): |
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52 d = self._call("branchmap") |
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53 try: |
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54 branchmap = {} |
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55 for branchpart in d.splitlines(): |
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56 branchname, branchheads = branchpart.split(' ', 1) |
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57 branchname = encoding.tolocal(urllib.unquote(branchname)) |
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58 branchheads = decodelist(branchheads) |
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59 branchmap[branchname] = branchheads |
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60 return branchmap |
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61 except TypeError: |
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62 self._abort(error.ResponseError(_("unexpected response:"), d)) |
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63 |
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64 def branches(self, nodes): |
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65 n = encodelist(nodes) |
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66 d = self._call("branches", nodes=n) |
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67 try: |
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68 br = [tuple(decodelist(b)) for b in d.splitlines()] |
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69 return br |
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70 except ValueError: |
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71 self._abort(error.ResponseError(_("unexpected response:"), d)) |
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72 |
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73 def between(self, pairs): |
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74 batch = 8 # avoid giant requests |
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75 r = [] |
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76 for i in xrange(0, len(pairs), batch): |
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77 n = " ".join([encodelist(p, '-') for p in pairs[i:i + batch]]) |
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78 d = self._call("between", pairs=n) |
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79 try: |
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80 r.extend(l and decodelist(l) or [] for l in d.splitlines()) |
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81 except ValueError: |
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82 self._abort(error.ResponseError(_("unexpected response:"), d)) |
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83 return r |
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84 |
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85 def pushkey(self, namespace, key, old, new): |
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86 if not self.capable('pushkey'): |
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87 return False |
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88 d = self._call("pushkey", |
13050 | 89 namespace=encoding.fromlocal(namespace), |
90 key=encoding.fromlocal(key), | |
91 old=encoding.fromlocal(old), | |
92 new=encoding.fromlocal(new)) | |
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93 try: |
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94 d = bool(int(d)) |
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95 except ValueError: |
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96 raise error.ResponseError( |
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97 _('push failed (unexpected response):'), d) |
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98 return d |
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99 |
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100 def listkeys(self, namespace): |
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101 if not self.capable('pushkey'): |
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102 return {} |
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104 r = {} |
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105 for l in d.splitlines(): |
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106 k, v = l.split('\t') |
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108 return r |
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109 |
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110 def stream_out(self): |
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111 return self._callstream('stream_out') |
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112 |
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113 def changegroup(self, nodes, kind): |
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114 n = encodelist(nodes) |
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115 f = self._callstream("changegroup", roots=n) |
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116 return changegroupmod.unbundle10(self._decompress(f), 'UN') |
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117 |
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118 def changegroupsubset(self, bases, heads, kind): |
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119 self.requirecap('changegroupsubset', _('look up remote changes')) |
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120 bases = encodelist(bases) |
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121 heads = encodelist(heads) |
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122 f = self._callstream("changegroupsubset", |
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123 bases=bases, heads=heads) |
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124 return changegroupmod.unbundle10(self._decompress(f), 'UN') |
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125 |
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126 def getbundle(self, source, heads=None, common=None): |
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127 self.requirecap('getbundle', _('look up remote changes')) |
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128 opts = {} |
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129 if heads is not None: |
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130 opts['heads'] = encodelist(heads) |
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131 if common is not None: |
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132 opts['common'] = encodelist(common) |
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133 f = self._callstream("getbundle", **opts) |
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134 return changegroupmod.unbundle10(self._decompress(f), 'UN') |
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135 |
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136 def unbundle(self, cg, heads, source): |
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137 '''Send cg (a readable file-like object representing the |
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138 changegroup to push, typically a chunkbuffer object) to the |
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139 remote server as a bundle. Return an integer indicating the |
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140 result of the push (see localrepository.addchangegroup()).''' |
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141 |
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142 if heads != ['force'] and self.capable('unbundlehash'): |
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143 heads = encodelist(['hashed', |
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144 util.sha1(''.join(sorted(heads))).digest()]) |
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145 else: |
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146 heads = encodelist(heads) |
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147 |
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148 ret, output = self._callpush("unbundle", cg, heads=heads) |
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149 if ret == "": |
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150 raise error.ResponseError( |
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151 _('push failed:'), output) |
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152 try: |
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153 ret = int(ret) |
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154 except ValueError: |
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155 raise error.ResponseError( |
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156 _('push failed (unexpected response):'), ret) |
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157 |
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158 for l in output.splitlines(True): |
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159 self.ui.status(_('remote: '), l) |
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160 return ret |
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161 |
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162 def debugwireargs(self, one, two, three=None, four=None, five=None): |
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163 # don't pass optional arguments left at their default value |
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164 opts = {} |
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165 if three is not None: |
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166 opts['three'] = three |
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167 if four is not None: |
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168 opts['four'] = four |
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169 return self._call('debugwireargs', one=one, two=two, **opts) |
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170 |
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171 # server side |
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172 |
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173 class streamres(object): |
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174 def __init__(self, gen): |
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175 self.gen = gen |
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176 |
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177 class pushres(object): |
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178 def __init__(self, res): |
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179 self.res = res |
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180 |
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181 class pusherr(object): |
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182 def __init__(self, res): |
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183 self.res = res |
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184 |
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185 def dispatch(repo, proto, command): |
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186 func, spec = commands[command] |
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187 args = proto.getargs(spec) |
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188 return func(repo, proto, *args) |
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189 |
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190 def options(cmd, keys, others): |
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191 opts = {} |
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192 for k in keys: |
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193 if k in others: |
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194 opts[k] = others[k] |
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195 del others[k] |
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196 if others: |
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197 sys.stderr.write("abort: %s got unexpected arguments %s\n" |
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198 % (cmd, ",".join(others))) |
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199 return opts |
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200 |
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201 def between(repo, proto, pairs): |
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202 pairs = [decodelist(p, '-') for p in pairs.split(" ")] |
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203 r = [] |
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204 for b in repo.between(pairs): |
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205 r.append(encodelist(b) + "\n") |
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206 return "".join(r) |
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207 |
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208 def branchmap(repo, proto): |
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209 branchmap = repo.branchmap() |
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210 heads = [] |
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211 for branch, nodes in branchmap.iteritems(): |
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212 branchname = urllib.quote(encoding.fromlocal(branch)) |
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213 branchnodes = encodelist(nodes) |
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214 heads.append('%s %s' % (branchname, branchnodes)) |
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215 return '\n'.join(heads) |
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216 |
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217 def branches(repo, proto, nodes): |
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218 nodes = decodelist(nodes) |
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219 r = [] |
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220 for b in repo.branches(nodes): |
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221 r.append(encodelist(b) + "\n") |
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222 return "".join(r) |
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223 |
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224 def capabilities(repo, proto): |
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225 caps = ('lookup changegroupsubset branchmap pushkey known getbundle ' |
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226 'unbundlehash').split() |
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227 if _allowstream(repo.ui): |
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228 requiredformats = repo.requirements & repo.supportedformats |
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229 # if our local revlogs are just revlogv1, add 'stream' cap |
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230 if not requiredformats - set(('revlogv1',)): |
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231 caps.append('stream') |
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232 # otherwise, add 'streamreqs' detailing our local revlog format |
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233 else: |
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234 caps.append('streamreqs=%s' % ','.join(requiredformats)) |
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235 caps.append('unbundle=%s' % ','.join(changegroupmod.bundlepriority)) |
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236 caps.append('httpheader=1024') |
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237 return ' '.join(caps) |
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238 |
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239 def changegroup(repo, proto, roots): |
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240 nodes = decodelist(roots) |
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241 cg = repo.changegroup(nodes, 'serve') |
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242 return streamres(proto.groupchunks(cg)) |
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243 |
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244 def changegroupsubset(repo, proto, bases, heads): |
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245 bases = decodelist(bases) |
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246 heads = decodelist(heads) |
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247 cg = repo.changegroupsubset(bases, heads, 'serve') |
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248 return streamres(proto.groupchunks(cg)) |
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249 |
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250 def debugwireargs(repo, proto, one, two, others): |
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251 # only accept optional args from the known set |
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252 opts = options('debugwireargs', ['three', 'four'], others) |
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253 return repo.debugwireargs(one, two, **opts) |
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254 |
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255 def getbundle(repo, proto, others): |
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256 opts = options('getbundle', ['heads', 'common'], others) |
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257 for k, v in opts.iteritems(): |
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258 opts[k] = decodelist(v) |
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259 cg = repo.getbundle('serve', **opts) |
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260 return streamres(proto.groupchunks(cg)) |
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261 |
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262 def heads(repo, proto): |
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263 h = repo.heads() |
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264 return encodelist(h) + "\n" |
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265 |
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266 def hello(repo, proto): |
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267 '''the hello command returns a set of lines describing various |
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268 interesting things about the server, in an RFC822-like format. |
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269 Currently the only one defined is "capabilities", which |
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270 consists of a line in the form: |
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271 |
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272 capabilities: space separated list of tokens |
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273 ''' |
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274 return "capabilities: %s\n" % (capabilities(repo, proto)) |
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275 |
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276 def listkeys(repo, proto, namespace): |
13050 | 277 d = pushkeymod.list(repo, encoding.tolocal(namespace)).items() |
278 t = '\n'.join(['%s\t%s' % (encoding.fromlocal(k), encoding.fromlocal(v)) | |
279 for k, v in d]) | |
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280 return t |
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281 |
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282 def lookup(repo, proto, key): |
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283 try: |
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284 r = hex(repo.lookup(encoding.tolocal(key))) |
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285 success = 1 |
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286 except Exception, inst: |
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287 r = str(inst) |
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288 success = 0 |
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289 return "%s %s\n" % (success, r) |
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290 |
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291 def known(repo, proto, nodes, others): |
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292 return ''.join(b and "1" or "0" for b in repo.known(decodelist(nodes))) |
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293 |
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294 def pushkey(repo, proto, namespace, key, old, new): |
13050 | 295 # compatibility with pre-1.8 clients which were accidentally |
296 # sending raw binary nodes rather than utf-8-encoded hex | |
297 if len(new) == 20 and new.encode('string-escape') != new: | |
298 # looks like it could be a binary node | |
299 try: | |
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300 new.decode('utf-8') |
13050 | 301 new = encoding.tolocal(new) # but cleanly decodes as UTF-8 |
302 except UnicodeDecodeError: | |
303 pass # binary, leave unmodified | |
304 else: | |
305 new = encoding.tolocal(new) # normal path | |
306 | |
307 r = pushkeymod.push(repo, | |
308 encoding.tolocal(namespace), encoding.tolocal(key), | |
309 encoding.tolocal(old), new) | |
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310 return '%s\n' % int(r) |
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311 |
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312 def _allowstream(ui): |
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313 return ui.configbool('server', 'uncompressed', True, untrusted=True) |
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314 |
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315 def stream(repo, proto): |
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316 '''If the server supports streaming clone, it advertises the "stream" |
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317 capability with a value representing the version and flags of the repo |
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318 it is serving. Client checks to see if it understands the format. |
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319 |
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320 The format is simple: the server writes out a line with the amount |
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321 of files, then the total amount of bytes to be transfered (separated |
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322 by a space). Then, for each file, the server first writes the filename |
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323 and filesize (separated by the null character), then the file contents. |
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324 ''' |
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325 |
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326 if not _allowstream(repo.ui): |
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327 return '1\n' |
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328 |
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329 entries = [] |
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330 total_bytes = 0 |
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331 try: |
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332 # get consistent snapshot of repo, lock during scan |
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333 lock = repo.lock() |
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334 try: |
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335 repo.ui.debug('scanning\n') |
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336 for name, ename, size in repo.store.walk(): |
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337 entries.append((name, size)) |
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338 total_bytes += size |
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339 finally: |
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340 lock.release() |
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341 except error.LockError: |
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342 return '2\n' # error: 2 |
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343 |
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344 def streamer(repo, entries, total): |
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345 '''stream out all metadata files in repository.''' |
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346 yield '0\n' # success |
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347 repo.ui.debug('%d files, %d bytes to transfer\n' % |
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348 (len(entries), total_bytes)) |
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349 yield '%d %d\n' % (len(entries), total_bytes) |
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350 for name, size in entries: |
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351 repo.ui.debug('sending %s (%d bytes)\n' % (name, size)) |
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352 # partially encode name over the wire for backwards compat |
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353 yield '%s\0%d\n' % (store.encodedir(name), size) |
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354 for chunk in util.filechunkiter(repo.sopener(name), limit=size): |
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355 yield chunk |
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356 |
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357 return streamres(streamer(repo, entries, total_bytes)) |
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358 |
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359 def unbundle(repo, proto, heads): |
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360 their_heads = decodelist(heads) |
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361 |
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362 def check_heads(): |
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363 heads = repo.heads() |
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364 heads_hash = util.sha1(''.join(sorted(heads))).digest() |
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365 return (their_heads == ['force'] or their_heads == heads or |
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366 their_heads == ['hashed', heads_hash]) |
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367 |
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368 proto.redirect() |
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369 |
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370 # fail early if possible |
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371 if not check_heads(): |
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372 return pusherr('unsynced changes') |
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373 |
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374 # write bundle data to temporary file because it can be big |
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375 fd, tempname = tempfile.mkstemp(prefix='hg-unbundle-') |
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376 fp = os.fdopen(fd, 'wb+') |
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377 r = 0 |
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378 try: |
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379 proto.getfile(fp) |
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380 lock = repo.lock() |
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381 try: |
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382 if not check_heads(): |
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383 # someone else committed/pushed/unbundled while we |
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384 # were transferring data |
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385 return pusherr('unsynced changes') |
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386 |
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387 # push can proceed |
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388 fp.seek(0) |
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389 gen = changegroupmod.readbundle(fp, None) |
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390 |
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391 try: |
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392 r = repo.addchangegroup(gen, 'serve', proto._client(), |
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393 lock=lock) |
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394 except util.Abort, inst: |
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395 sys.stderr.write("abort: %s\n" % inst) |
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396 finally: |
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397 lock.release() |
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398 return pushres(r) |
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399 |
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400 finally: |
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401 fp.close() |
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402 os.unlink(tempname) |
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403 |
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404 commands = { |
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405 'between': (between, 'pairs'), |
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406 'branchmap': (branchmap, ''), |
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407 'branches': (branches, 'nodes'), |
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408 'capabilities': (capabilities, ''), |
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409 'changegroup': (changegroup, 'roots'), |
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410 'changegroupsubset': (changegroupsubset, 'bases heads'), |
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411 'debugwireargs': (debugwireargs, 'one two *'), |
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412 'getbundle': (getbundle, '*'), |
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413 'heads': (heads, ''), |
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414 'hello': (hello, ''), |
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415 'known': (known, 'nodes *'), |
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416 'listkeys': (listkeys, 'namespace'), |
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417 'lookup': (lookup, 'key'), |
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418 'pushkey': (pushkey, 'namespace key old new'), |
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419 'stream_out': (stream, ''), |
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420 'unbundle': (unbundle, 'heads'), |
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421 } |