Mercurial > hg
annotate tests/test-batching.py @ 44115:e1b8b4e4f496
rust: add a README
In particular to explain how to build any of the rust. It's neither
obvious, nor easy to find out, nor easy to determine if you did it
right without some documentation.
Differential Revision: https://phab.mercurial-scm.org/D7952
author | Valentin Gatien-Baron <valentin.gatienbaron@gmail.com> |
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date | Mon, 20 Jan 2020 18:28:46 -0500 |
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children | 89a2afe31e82 |
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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 from __future__ import absolute_import, print_function |
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9 |
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10 import contextlib |
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11 |
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12 from mercurial import ( |
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13 localrepo, |
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14 pycompat, |
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15 wireprotov1peer, |
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16 ) |
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17 |
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18 |
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19 def bprint(*bs): |
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20 print(*[pycompat.sysstr(b) for b in bs]) |
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21 |
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22 |
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23 # equivalent of repo.repository |
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24 class thing(object): |
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25 def hello(self): |
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26 return b"Ready." |
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27 |
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28 |
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29 # equivalent of localrepo.localrepository |
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30 class localthing(thing): |
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31 def foo(self, one, two=None): |
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32 if one: |
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33 return b"%s and %s" % (one, two,) |
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34 return b"Nope" |
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35 |
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36 def bar(self, b, a): |
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37 return b"%s und %s" % (b, a,) |
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38 |
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39 def greet(self, name=None): |
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40 return b"Hello, %s" % name |
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41 |
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42 @contextlib.contextmanager |
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43 def commandexecutor(self): |
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44 e = localrepo.localcommandexecutor(self) |
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45 try: |
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46 yield e |
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47 finally: |
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48 e.close() |
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49 |
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50 |
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51 # usage of "thing" interface |
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52 def use(it): |
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53 |
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54 # Direct call to base method shared between client and server. |
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55 bprint(it.hello()) |
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56 |
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57 # Direct calls to proxied methods. They cause individual roundtrips. |
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58 bprint(it.foo(b"Un", two=b"Deux")) |
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59 bprint(it.bar(b"Eins", b"Zwei")) |
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60 |
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61 # Batched call to a couple of proxied methods. |
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62 |
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63 with it.commandexecutor() as e: |
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64 ffoo = e.callcommand(b'foo', {b'one': b'One', b'two': b'Two'}) |
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65 fbar = e.callcommand(b'bar', {b'b': b'Eins', b'a': b'Zwei'}) |
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66 fbar2 = e.callcommand(b'bar', {b'b': b'Uno', b'a': b'Due'}) |
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67 |
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68 bprint(ffoo.result()) |
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69 bprint(fbar.result()) |
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70 bprint(fbar2.result()) |
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71 |
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72 |
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73 # local usage |
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74 mylocal = localthing() |
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75 print() |
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76 bprint(b"== Local") |
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77 use(mylocal) |
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78 |
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79 # demo remoting; mimicks what wireproto and HTTP/SSH do |
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80 |
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81 # shared |
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82 |
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83 |
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84 def escapearg(plain): |
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85 return ( |
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86 plain.replace(b':', b'::') |
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87 .replace(b',', b':,') |
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88 .replace(b';', b':;') |
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89 .replace(b'=', b':=') |
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90 ) |
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91 |
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92 |
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93 def unescapearg(escaped): |
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94 return ( |
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95 escaped.replace(b':=', b'=') |
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96 .replace(b':;', b';') |
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97 .replace(b':,', b',') |
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98 .replace(b'::', b':') |
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99 ) |
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100 |
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101 |
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102 # server side |
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103 |
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104 # equivalent of wireproto's global functions |
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105 class server(object): |
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106 def __init__(self, local): |
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107 self.local = local |
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108 |
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109 def _call(self, name, args): |
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110 args = dict(arg.split(b'=', 1) for arg in args) |
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111 return getattr(self, name)(**args) |
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112 |
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113 def perform(self, req): |
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114 bprint(b"REQ:", req) |
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115 name, args = req.split(b'?', 1) |
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116 args = args.split(b'&') |
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117 vals = dict(arg.split(b'=', 1) for arg in args) |
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118 res = getattr(self, pycompat.sysstr(name))(**pycompat.strkwargs(vals)) |
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119 bprint(b" ->", res) |
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120 return res |
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121 |
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122 def batch(self, cmds): |
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123 res = [] |
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124 for pair in cmds.split(b';'): |
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125 name, args = pair.split(b':', 1) |
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126 vals = {} |
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127 for a in args.split(b','): |
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128 if a: |
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129 n, v = a.split(b'=') |
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130 vals[n] = unescapearg(v) |
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131 res.append( |
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132 escapearg( |
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133 getattr(self, pycompat.sysstr(name))( |
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134 **pycompat.strkwargs(vals) |
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135 ) |
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136 ) |
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137 ) |
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138 return b';'.join(res) |
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139 |
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140 def foo(self, one, two): |
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141 return mangle(self.local.foo(unmangle(one), unmangle(two))) |
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142 |
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143 def bar(self, b, a): |
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144 return mangle(self.local.bar(unmangle(b), unmangle(a))) |
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145 |
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146 def greet(self, name): |
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147 return mangle(self.local.greet(unmangle(name))) |
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148 |
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149 |
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150 myserver = server(mylocal) |
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151 |
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152 # local side |
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153 |
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154 # equivalent of wireproto.encode/decodelist, that is, type-specific marshalling |
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155 # here we just transform the strings a bit to check we're properly en-/decoding |
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156 def mangle(s): |
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157 return b''.join(pycompat.bytechr(ord(c) + 1) for c in pycompat.bytestr(s)) |
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158 |
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159 |
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160 def unmangle(s): |
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161 return b''.join(pycompat.bytechr(ord(c) - 1) for c in pycompat.bytestr(s)) |
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162 |
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163 |
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164 # equivalent of wireproto.wirerepository and something like http's wire format |
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165 class remotething(thing): |
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166 def __init__(self, server): |
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167 self.server = server |
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168 |
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169 def _submitone(self, name, args): |
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170 req = name + b'?' + b'&'.join([b'%s=%s' % (n, v) for n, v in args]) |
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171 return self.server.perform(req) |
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172 |
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173 def _submitbatch(self, cmds): |
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174 req = [] |
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175 for name, args in cmds: |
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176 args = b','.join(n + b'=' + escapearg(v) for n, v in args) |
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177 req.append(name + b':' + args) |
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178 req = b';'.join(req) |
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179 res = self._submitone(b'batch', [(b'cmds', req,)]) |
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180 for r in res.split(b';'): |
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181 yield r |
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182 |
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183 @contextlib.contextmanager |
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184 def commandexecutor(self): |
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185 e = wireprotov1peer.peerexecutor(self) |
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186 try: |
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187 yield e |
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188 finally: |
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189 e.close() |
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190 |
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191 @wireprotov1peer.batchable |
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192 def foo(self, one, two=None): |
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193 encargs = [(b'one', mangle(one),), (b'two', mangle(two),)] |
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194 encresref = wireprotov1peer.future() |
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195 yield encargs, encresref |
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196 yield unmangle(encresref.value) |
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197 |
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198 @wireprotov1peer.batchable |
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199 def bar(self, b, a): |
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200 encresref = wireprotov1peer.future() |
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201 yield [(b'b', mangle(b),), (b'a', mangle(a),)], encresref |
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202 yield unmangle(encresref.value) |
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203 |
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204 # greet is coded directly. It therefore does not support batching. If it |
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205 # does appear in a batch, the batch is split around greet, and the call to |
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206 # greet is done in its own roundtrip. |
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207 def greet(self, name=None): |
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208 return unmangle(self._submitone(b'greet', [(b'name', mangle(name),)])) |
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209 |
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210 |
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211 # demo remote usage |
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212 |
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213 myproxy = remotething(myserver) |
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214 print() |
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215 bprint(b"== Remote") |
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216 use(myproxy) |