Mercurial > public > mercurial-scm > hg-stable

annotate mercurial/sshrepo.py @ 11591:0d9cb3f3b0a1

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protocol: unify client changegroup methods
author Matt Mackall <mpm@selenic.com>
date Wed, 14 Jul 2010 17:09:31 -0500
parents 0b15aee0a306
children 26e0782b8380
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1 # sshrepo.py - ssh repository proxy class for mercurial
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2 #
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3 # Copyright 2005, 2006 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 from node import bin, hex
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9 from i18n import _
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10 import repo, util, error, encoding, wireproto
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11 import re, urllib
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12
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13 class remotelock(object):
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14 def __init__(self, repo):
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15 self.repo = repo
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16 def release(self):
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17 self.repo.unlock()
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18 self.repo = None
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19 def __del__(self):
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20 if self.repo:
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21 self.release()
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22
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23 class sshrepository(wireproto.wirerepository):
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24 def __init__(self, ui, path, create=0):
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25 self._url = path
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26 self.ui = ui
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27
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28 m = re.match(r'^ssh://(([^@]+)@)?([^:/]+)(:(\d+))?(/(.*))?$', path)
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29 if not m:
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30 self._abort(error.RepoError(_("couldn't parse location %s") % path))
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31
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32 self.user = m.group(2)
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33 self.host = m.group(3)
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34 self.port = m.group(5)
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35 self.path = m.group(7) or "."
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36
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37 sshcmd = self.ui.config("ui", "ssh", "ssh")
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38 remotecmd = self.ui.config("ui", "remotecmd", "hg")
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39
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40 args = util.sshargs(sshcmd, self.host, self.user, self.port)
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41
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42 if create:
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43 cmd = '%s %s "%s init %s"'
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44 cmd = cmd % (sshcmd, args, remotecmd, self.path)
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45
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46 ui.note(_('running %s\n') % cmd)
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47 res = util.system(cmd)
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48 if res != 0:
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49 self._abort(error.RepoError(_("could not create remote repo")))
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51 self.validate_repo(ui, sshcmd, args, remotecmd)
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52
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53 def url(self):
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54 return self._url
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55
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56 def validate_repo(self, ui, sshcmd, args, remotecmd):
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57 # cleanup up previous run
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58 self.cleanup()
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59
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60 cmd = '%s %s "%s -R %s serve --stdio"'
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61 cmd = cmd % (sshcmd, args, remotecmd, self.path)
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62
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63 cmd = util.quotecommand(cmd)
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64 ui.note(_('running %s\n') % cmd)
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65 self.pipeo, self.pipei, self.pipee = util.popen3(cmd)
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66
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67 # skip any noise generated by remote shell
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68 self._callstream("hello")
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69 r = self._callstream("between", pairs=("%s-%s" % ("0"*40, "0"*40)))
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70 lines = ["", "dummy"]
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71 max_noise = 500
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72 while lines[-1] and max_noise:
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73 l = r.readline()
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74 self.readerr()
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75 if lines[-1] == "1\n" and l == "\n":
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76 break
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77 if l:
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78 ui.debug("remote: ", l)
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79 lines.append(l)
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80 max_noise -= 1
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81 else:
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82 self._abort(error.RepoError(_("no suitable response from remote hg")))
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83
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84 self.capabilities = set()
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85 for l in reversed(lines):
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86 if l.startswith("capabilities:"):
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87 self.capabilities.update(l[:-1].split(":")[1].split())
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88 break
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89
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90 def readerr(self):
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91 while 1:
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92 size = util.fstat(self.pipee).st_size
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93 if size == 0:
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94 break
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95 l = self.pipee.readline()
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96 if not l:
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97 break
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98 self.ui.status(_("remote: "), l)
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99
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100 def _abort(self, exception):
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101 self.cleanup()
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102 raise exception
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103
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104 def cleanup(self):
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105 try:
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106 self.pipeo.close()
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107 self.pipei.close()
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108 # read the error descriptor until EOF
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109 for l in self.pipee:
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110 self.ui.status(_("remote: "), l)
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111 self.pipee.close()
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112 except:
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113 pass
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114
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115 __del__ = cleanup
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116
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117 def _callstream(self, cmd, **args):
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118 self.ui.debug("sending %s command\n" % cmd)
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119 self.pipeo.write("%s\n" % cmd)
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120 for k, v in sorted(args.iteritems()):
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121 self.pipeo.write("%s %d\n" % (k, len(v)))
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122 self.pipeo.write(v)
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123 self.pipeo.flush()
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124
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125 return self.pipei
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126
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127 def _call(self, cmd, **args):
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128 self._callstream(cmd, **args)
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129 return self._recv()
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130
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131 def _decompress(self, stream):
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132 return stream
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133
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134 def _recv(self):
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135 l = self.pipei.readline()
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136 self.readerr()
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137 try:
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138 l = int(l)
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139 except:
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140 self._abort(error.ResponseError(_("unexpected response:"), l))
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141 return self.pipei.read(l)
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142
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143 def _send(self, data, flush=False):
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144 self.pipeo.write("%d\n" % len(data))
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145 if data:
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146 self.pipeo.write(data)
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147 if flush:
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148 self.pipeo.flush()
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149 self.readerr()
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150
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151 def lock(self):
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152 self._call("lock")
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153 return remotelock(self)
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154
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155 def unlock(self):
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156 self._call("unlock")
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157
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158 def unbundle(self, cg, heads, source):
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159 '''Send cg (a readable file-like object representing the
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160 changegroup to push, typically a chunkbuffer object) to the
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161 remote server as a bundle. Return an integer indicating the
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162 result of the push (see localrepository.addchangegroup()).'''
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163 d = self._call("unbundle", heads=' '.join(map(hex, heads)))
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164 if d:
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165 # remote may send "unsynced changes"
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166 self._abort(error.RepoError(_("push refused: %s") % d))
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167
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168 while 1:
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169 d = cg.read(4096)
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170 if not d:
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171 break
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172 self._send(d)
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173
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174 self._send("", flush=True)
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175
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176 r = self._recv()
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177 if r:
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178 # remote may send "unsynced changes"
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179 self._abort(error.RepoError(_("push failed: %s") % r))
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180
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181 r = self._recv()
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182 try:
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183 return int(r)
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184 except:
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185 self._abort(error.ResponseError(_("unexpected response:"), r))
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186
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187 def addchangegroup(self, cg, source, url):
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188 '''Send a changegroup to the remote server. Return an integer
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189 similar to unbundle(). DEPRECATED, since it requires locking the
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190 remote.'''
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191 d = self._call("addchangegroup")
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192 if d:
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193 self._abort(error.RepoError(_("push refused: %s") % d))
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194 while 1:
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195 d = cg.read(4096)
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196 if not d:
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197 break
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198 self.pipeo.write(d)
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199 self.readerr()
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200
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201 self.pipeo.flush()
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202
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203 self.readerr()
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204 r = self._recv()
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205 if not r:
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206 return 1
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207 try:
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208 return int(r)
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209 except:
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210 self._abort(error.ResponseError(_("unexpected response:"), r))
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211
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212 instance = sshrepository