annotate tests/test-batching.py @ 50824:489268c8ee7e

cmdutil: migrate `opts` on commitstatus() to native kwargs
author Matt Harbison <matt_harbison@yahoo.com>
date Sat, 19 Aug 2023 23:06:40 -0400
parents 642e31cb55f0
children 493034cc3265
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1 # test-batching.py - tests for transparent command batching
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2 #
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3 # Copyright 2011 Peter Arrenbrecht <peter@arrenbrecht.ch>
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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
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9 import contextlib
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10
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11 from mercurial import (
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12 localrepo,
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13 pycompat,
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14 wireprotov1peer,
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15 )
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16
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17
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18 def bprint(*bs):
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19 print(*[pycompat.sysstr(b) for b in bs])
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21
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22 # equivalent of repo.repository
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23 class thing:
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24 def hello(self):
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25 return b"Ready."
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26
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27
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28 # equivalent of localrepo.localrepository
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29 class localthing(thing):
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30 def foo(self, one, two=None):
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31 if one:
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32 return b"%s and %s" % (
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33 one,
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34 two,
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35 )
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36 return b"Nope"
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37
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38 def bar(self, b, a):
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39 return b"%s und %s" % (
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40 b,
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41 a,
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42 )
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43
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44 def greet(self, name=None):
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45 return b"Hello, %s" % name
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46
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47 @contextlib.contextmanager
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48 def commandexecutor(self):
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49 e = localrepo.localcommandexecutor(self)
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50 try:
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51 yield e
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52 finally:
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53 e.close()
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54
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55
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56 # usage of "thing" interface
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57 def use(it):
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58
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59 # Direct call to base method shared between client and server.
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60 bprint(it.hello())
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61
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62 # Direct calls to proxied methods. They cause individual roundtrips.
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63 bprint(it.foo(b"Un", two=b"Deux"))
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64 bprint(it.bar(b"Eins", b"Zwei"))
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65
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66 # Batched call to a couple of proxied methods.
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67
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68 with it.commandexecutor() as e:
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69 ffoo = e.callcommand(b'foo', {b'one': b'One', b'two': b'Two'})
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70 fbar = e.callcommand(b'bar', {b'b': b'Eins', b'a': b'Zwei'})
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71 fbar2 = e.callcommand(b'bar', {b'b': b'Uno', b'a': b'Due'})
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72
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73 bprint(ffoo.result())
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74 bprint(fbar.result())
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75 bprint(fbar2.result())
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76
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77
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78 # local usage
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79 mylocal = localthing()
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80 print()
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81 bprint(b"== Local")
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82 use(mylocal)
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83
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84 # demo remoting; mimicks what wireproto and HTTP/SSH do
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85
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86 # shared
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87
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88
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89 def escapearg(plain):
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90 return (
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91 plain.replace(b':', b'::')
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92 .replace(b',', b':,')
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93 .replace(b';', b':;')
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94 .replace(b'=', b':=')
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95 )
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96
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97
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98 def unescapearg(escaped):
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99 return (
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100 escaped.replace(b':=', b'=')
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101 .replace(b':;', b';')
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102 .replace(b':,', b',')
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103 .replace(b'::', b':')
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104 )
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105
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106
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107 # server side
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108
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109 # equivalent of wireproto's global functions
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110 class server:
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111 def __init__(self, local):
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112 self.local = local
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113
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114 def _call(self, name, args):
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115 args = dict(arg.split(b'=', 1) for arg in args)
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116 return getattr(self, name)(**args)
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117
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118 def perform(self, req):
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119 bprint(b"REQ:", req)
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120 name, args = req.split(b'?', 1)
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121 args = args.split(b'&')
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122 vals = dict(arg.split(b'=', 1) for arg in args)
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123 res = getattr(self, pycompat.sysstr(name))(**pycompat.strkwargs(vals))
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124 bprint(b" ->", res)
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125 return res
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126
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127 def batch(self, cmds):
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128 res = []
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129 for pair in cmds.split(b';'):
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130 name, args = pair.split(b':', 1)
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131 vals = {}
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132 for a in args.split(b','):
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133 if a:
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134 n, v = a.split(b'=')
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135 vals[n] = unescapearg(v)
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136 res.append(
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137 escapearg(
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138 getattr(self, pycompat.sysstr(name))(
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139 **pycompat.strkwargs(vals)
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140 )
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141 )
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142 )
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143 return b';'.join(res)
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144
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145 def foo(self, one, two):
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146 return mangle(self.local.foo(unmangle(one), unmangle(two)))
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147
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148 def bar(self, b, a):
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149 return mangle(self.local.bar(unmangle(b), unmangle(a)))
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150
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151 def greet(self, name):
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152 return mangle(self.local.greet(unmangle(name)))
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153
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154
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155 myserver = server(mylocal)
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156
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157 # local side
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158
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159 # equivalent of wireproto.encode/decodelist, that is, type-specific marshalling
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160 # here we just transform the strings a bit to check we're properly en-/decoding
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161 def mangle(s):
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162 return b''.join(pycompat.bytechr(ord(c) + 1) for c in pycompat.bytestr(s))
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163
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164
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165 def unmangle(s):
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166 return b''.join(pycompat.bytechr(ord(c) - 1) for c in pycompat.bytestr(s))
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167
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168
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169 # equivalent of wireproto.wirerepository and something like http's wire format
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170 class remotething(thing):
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171 def __init__(self, server):
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172 self.server = server
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173
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174 def _submitone(self, name, args):
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175 req = name + b'?' + b'&'.join([b'%s=%s' % (n, v) for n, v in args])
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176 return self.server.perform(req)
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177
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178 def _submitbatch(self, cmds):
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179 req = []
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180 for name, args in cmds:
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181 args = b','.join(n + b'=' + escapearg(v) for n, v in args)
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182 req.append(name + b':' + args)
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183 req = b';'.join(req)
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184 res = self._submitone(
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185 b'batch',
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186 [
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187 (
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188 b'cmds',
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189 req,
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190 )
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191 ],
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192 )
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193 for r in res.split(b';'):
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194 yield r
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195
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196 @contextlib.contextmanager
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197 def commandexecutor(self):
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198 e = wireprotov1peer.peerexecutor(self)
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199 try:
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200 yield e
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201 finally:
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202 e.close()
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203
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204 @wireprotov1peer.batchable
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205 def foo(self, one, two=None):
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206 encoded_args = [
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207 (
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208 b'one',
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209 mangle(one),
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210 ),
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211 (
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212 b'two',
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213 mangle(two),
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214 ),
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215 ]
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216 return encoded_args, unmangle
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217
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218 @wireprotov1peer.batchable
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219 def bar(self, b, a):
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220 return [
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221 (
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222 b'b',
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223 mangle(b),
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224 ),
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225 (
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226 b'a',
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227 mangle(a),
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228 ),
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229 ], unmangle
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230
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231 # greet is coded directly. It therefore does not support batching. If it
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232 # does appear in a batch, the batch is split around greet, and the call to
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233 # greet is done in its own roundtrip.
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234 def greet(self, name=None):
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235 return unmangle(
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236 self._submitone(
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237 b'greet',
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238 [
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239 (
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240 b'name',
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241 mangle(name),
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242 )
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243 ],
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244 )
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245 )
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246
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247
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248 # demo remote usage
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249
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250 myproxy = remotething(myserver)
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251 print()
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252 bprint(b"== Remote")
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253 use(myproxy)