Mercurial > public > mercurial-scm > hg-stable

annotate mercurial/sshrepo.py @ 2612:ffb895f16925

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add support for streaming clone. existing clone code uses pull to get changes from remote repo. is very slow, uses lots of memory and cpu. new clone code has server write file data straight to client, client writes file data straight to disk. memory and cpu used are very low, clone is much faster over lan. new client can still clone with pull, can still clone from older servers. new server can still serve older clients.
author Vadim Gelfer <vadim.gelfer@gmail.com>
date Fri, 14 Jul 2006 11:17:22 -0700
parents e1831f06eef1
children 109a22f5434a
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
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1 # sshrepo.py - ssh repository proxy class for mercurial
0
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2 #
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3 # Copyright 2005 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
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6 # of the GNU General Public License, incorporated herein by reference.
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7
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8 from node import *
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9 from remoterepo import *
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10 from i18n import gettext as _
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11 from demandload import *
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12 demandload(globals(), "hg os re stat util")
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13
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14 class sshrepository(remoterepository):
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15 def __init__(self, ui, path, create=0):
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16 self.url = path
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17 self.ui = ui
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18
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19 m = re.match(r'ssh://(([^@]+)@)?([^:/]+)(:(\d+))?(/(.*))?', path)
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20 if not m:
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21 raise hg.RepoError(_("couldn't parse location %s") % path)
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22
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23 self.user = m.group(2)
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24 self.host = m.group(3)
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25 self.port = m.group(5)
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26 self.path = m.group(7) or "."
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28 args = self.user and ("%s@%s" % (self.user, self.host)) or self.host
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29 args = self.port and ("%s -p %s") % (args, self.port) or args
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31 sshcmd = self.ui.config("ui", "ssh", "ssh")
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32 remotecmd = self.ui.config("ui", "remotecmd", "hg")
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33
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34 if create:
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35 try:
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36 self.validate_repo(ui, sshcmd, args, remotecmd)
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37 return # the repo is good, nothing more to do
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38 except hg.RepoError:
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39 pass
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40
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41 cmd = '%s %s "%s init %s"'
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42 cmd = cmd % (sshcmd, args, remotecmd, self.path)
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43
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44 ui.note('running %s\n' % cmd)
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45 res = os.system(cmd)
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46 if res != 0:
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47 raise hg.RepoError(_("could not create remote repo"))
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49 self.validate_repo(ui, sshcmd, args, remotecmd)
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51 def validate_repo(self, ui, sshcmd, args, remotecmd):
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52 cmd = '%s %s "%s -R %s serve --stdio"'
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53 cmd = cmd % (sshcmd, args, remotecmd, self.path)
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54
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55 ui.note('running %s\n' % cmd)
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56 self.pipeo, self.pipei, self.pipee = os.popen3(cmd, 'b')
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57
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58 # skip any noise generated by remote shell
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59 self.do_cmd("hello")
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60 r = self.do_cmd("between", pairs=("%s-%s" % ("0"*40, "0"*40)))
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61 lines = ["", "dummy"]
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62 max_noise = 500
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63 while lines[-1] and max_noise:
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64 l = r.readline()
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65 self.readerr()
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66 if lines[-1] == "1\n" and l == "\n":
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67 break
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68 if l:
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69 ui.debug(_("remote: "), l)
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70 lines.append(l)
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71 max_noise -= 1
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72 else:
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73 raise hg.RepoError(_("no response from remote hg"))
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74
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75 self.capabilities = ()
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76 lines.reverse()
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77 for l in lines:
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78 if l.startswith("capabilities:"):
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79 self.capabilities = l[:-1].split(":")[1].split()
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80 break
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81
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82 def readerr(self):
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83 while 1:
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84 size = util.fstat(self.pipee).st_size
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85 if size == 0: break
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86 l = self.pipee.readline()
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87 if not l: break
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88 self.ui.status(_("remote: "), l)
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89
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90 def __del__(self):
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91 try:
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92 self.pipeo.close()
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93 self.pipei.close()
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94 # read the error descriptor until EOF
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95 for l in self.pipee:
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96 self.ui.status(_("remote: "), l)
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97 self.pipee.close()
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98 except:
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99 pass
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100
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101 def do_cmd(self, cmd, **args):
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102 self.ui.debug(_("sending %s command\n") % cmd)
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103 self.pipeo.write("%s\n" % cmd)
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104 for k, v in args.items():
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105 self.pipeo.write("%s %d\n" % (k, len(v)))
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106 self.pipeo.write(v)
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107 self.pipeo.flush()
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108
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109 return self.pipei
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110
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111 def call(self, cmd, **args):
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112 r = self.do_cmd(cmd, **args)
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113 l = r.readline()
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114 self.readerr()
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115 try:
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116 l = int(l)
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117 except:
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118 raise hg.RepoError(_("unexpected response '%s'") % l)
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119 return r.read(l)
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120
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121 def lock(self):
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122 self.call("lock")
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123 return remotelock(self)
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124
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125 def unlock(self):
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126 self.call("unlock")
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127
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128 def heads(self):
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129 d = self.call("heads")
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130 try:
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131 return map(bin, d[:-1].split(" "))
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132 except:
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133 raise hg.RepoError(_("unexpected response '%s'") % (d[:400] + "..."))
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134
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135 def branches(self, nodes):
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136 n = " ".join(map(hex, nodes))
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137 d = self.call("branches", nodes=n)
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138 try:
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139 br = [ tuple(map(bin, b.split(" "))) for b in d.splitlines() ]
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140 return br
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141 except:
1402
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142 raise hg.RepoError(_("unexpected response '%s'") % (d[:400] + "..."))
624
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143
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144 def between(self, pairs):
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145 n = "\n".join(["-".join(map(hex, p)) for p in pairs])
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146 d = self.call("between", pairs=n)
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147 try:
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148 p = [ l and map(bin, l.split(" ")) or [] for l in d.splitlines() ]
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149 return p
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150 except:
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9d2c2e6b32b5 i18n part2: use '_' for all strings who are part of the user interface
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
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151 raise hg.RepoError(_("unexpected response '%s'") % (d[:400] + "..."))
624
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152
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50de0887bbcd add preoutgoing and outgoing hooks.
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153 def changegroup(self, nodes, kind):
624
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154 n = " ".join(map(hex, nodes))
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155 return self.do_cmd("changegroup", roots=n)
624
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156
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157 def unbundle(self, cg, heads, source):
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158 d = self.call("unbundle", heads=' '.join(map(hex, heads)))
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159 if d:
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160 raise hg.RepoError(_("push refused: %s") % d)
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161
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162 while 1:
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163 d = cg.read(4096)
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164 if not d: break
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165 self.pipeo.write(str(len(d)) + '\n')
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166 self.pipeo.write(d)
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167 self.readerr()
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168
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169 self.pipeo.write('0\n')
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170 self.pipeo.flush()
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171
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172 self.readerr()
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173 d = self.pipei.readline()
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diff changeset
174 if d != '\n':
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175 return 1
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176
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177 l = int(self.pipei.readline())
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178 r = self.pipei.read(l)
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179 if not r:
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180 return 1
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181 return int(r)
e8c4f3d3df8c extend network protocol to stop clients from locking servers
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diff changeset
182
2230
332950340788 localrepository.addchangegroup: add more source infos to hooks
Vadim Gelfer <vadim.gelfer@gmail.com>
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diff changeset
183 def addchangegroup(self, cg, source):
639
31cebba881a0 Add addchangegroup to the ssh protocol
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184 d = self.call("addchangegroup")
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diff changeset
185 if d:
2439
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186 raise hg.RepoError(_("push refused: %s") % d)
639
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diff changeset
187 while 1:
31cebba881a0 Add addchangegroup to the ssh protocol
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188 d = cg.read(4096)
31cebba881a0 Add addchangegroup to the ssh protocol
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189 if not d: break
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190 self.pipeo.write(d)
646
342927da4f4c Show remote client output with "remote:"
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191 self.readerr()
639
31cebba881a0 Add addchangegroup to the ssh protocol
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diff changeset
192
31cebba881a0 Add addchangegroup to the ssh protocol
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193 self.pipeo.flush()
31cebba881a0 Add addchangegroup to the ssh protocol
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diff changeset
194
646
342927da4f4c Show remote client output with "remote:"
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195 self.readerr()
639
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diff changeset
196 l = int(self.pipei.readline())
2019
ced2d3620f95 add merge command. means same thing as "update -m".
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diff changeset
197 r = self.pipei.read(l)
ced2d3620f95 add merge command. means same thing as "update -m".
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diff changeset
198 if not r:
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199 return 1
ced2d3620f95 add merge command. means same thing as "update -m".
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200 return int(r)
2612
ffb895f16925 add support for streaming clone.
Vadim Gelfer <vadim.gelfer@gmail.com>
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diff changeset
201
ffb895f16925 add support for streaming clone.
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diff changeset
202 def stream_out(self):
ffb895f16925 add support for streaming clone.
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diff changeset
203 return self.do_cmd('stream_out')