Mercurial > hg
annotate tests/test-batching.py @ 30632:1d0e4832e616
convert: parse perforce data on-demand
We are using read-only attributes that parse the perforce data on
demand. We are reading the data only once whenever an attribute is
requested and use it throughout the import process. This is equivalent
to the previous behavior, but we are avoiding reading from perforce when
we initialize the object, but instead run it during the actual import
process, when the first attribute is requested (usually getheads(), see
`convertcmd.convert`).
author | David Soria Parra <davidsp@fb.com> |
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date | Tue, 20 Dec 2016 09:23:50 -0800 |
parents | 544908ae36ce |
children | e2fc2122029c |
rev | line source |
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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 from mercurial import ( |
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11 peer, |
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12 wireproto, |
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13 ) |
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14 |
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15 # equivalent of repo.repository |
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16 class thing(object): |
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17 def hello(self): |
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18 return "Ready." |
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19 |
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20 # equivalent of localrepo.localrepository |
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21 class localthing(thing): |
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22 def foo(self, one, two=None): |
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23 if one: |
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24 return "%s and %s" % (one, two,) |
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25 return "Nope" |
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26 def bar(self, b, a): |
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27 return "%s und %s" % (b, a,) |
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28 def greet(self, name=None): |
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29 return "Hello, %s" % name |
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30 def batch(self): |
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31 '''Support for local batching.''' |
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32 return peer.localbatch(self) |
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33 |
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34 # usage of "thing" interface |
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35 def use(it): |
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36 |
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37 # Direct call to base method shared between client and server. |
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38 print(it.hello()) |
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39 |
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40 # Direct calls to proxied methods. They cause individual roundtrips. |
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41 print(it.foo("Un", two="Deux")) |
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42 print(it.bar("Eins", "Zwei")) |
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43 |
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44 # Batched call to a couple of (possibly proxied) methods. |
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45 batch = it.batch() |
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46 # The calls return futures to eventually hold results. |
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47 foo = batch.foo(one="One", two="Two") |
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48 foo2 = batch.foo(None) |
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49 bar = batch.bar("Eins", "Zwei") |
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50 # We can call non-batchable proxy methods, but the break the current batch |
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51 # request and cause additional roundtrips. |
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52 greet = batch.greet(name="John Smith") |
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53 # We can also add local methods into the mix, but they break the batch too. |
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54 hello = batch.hello() |
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55 bar2 = batch.bar(b="Uno", a="Due") |
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56 # Only now are all the calls executed in sequence, with as few roundtrips |
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57 # as possible. |
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58 batch.submit() |
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59 # After the call to submit, the futures actually contain values. |
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60 print(foo.value) |
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61 print(foo2.value) |
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62 print(bar.value) |
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63 print(greet.value) |
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64 print(hello.value) |
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65 print(bar2.value) |
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66 |
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67 # local usage |
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68 mylocal = localthing() |
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69 print() |
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70 print("== Local") |
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71 use(mylocal) |
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72 |
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73 # demo remoting; mimicks what wireproto and HTTP/SSH do |
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74 |
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75 # shared |
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76 |
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77 def escapearg(plain): |
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78 return (plain |
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79 .replace(':', '::') |
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80 .replace(',', ':,') |
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81 .replace(';', ':;') |
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82 .replace('=', ':=')) |
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83 def unescapearg(escaped): |
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84 return (escaped |
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85 .replace(':=', '=') |
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86 .replace(':;', ';') |
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87 .replace(':,', ',') |
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88 .replace('::', ':')) |
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89 |
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90 # server side |
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91 |
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92 # equivalent of wireproto's global functions |
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93 class server(object): |
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94 def __init__(self, local): |
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95 self.local = local |
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96 def _call(self, name, args): |
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97 args = dict(arg.split('=', 1) for arg in args) |
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98 return getattr(self, name)(**args) |
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99 def perform(self, req): |
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100 print("REQ:", req) |
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101 name, args = req.split('?', 1) |
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102 args = args.split('&') |
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103 vals = dict(arg.split('=', 1) for arg in args) |
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104 res = getattr(self, name)(**vals) |
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105 print(" ->", res) |
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106 return res |
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107 def batch(self, cmds): |
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108 res = [] |
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109 for pair in cmds.split(';'): |
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110 name, args = pair.split(':', 1) |
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111 vals = {} |
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112 for a in args.split(','): |
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113 if a: |
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114 n, v = a.split('=') |
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115 vals[n] = unescapearg(v) |
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116 res.append(escapearg(getattr(self, name)(**vals))) |
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117 return ';'.join(res) |
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118 def foo(self, one, two): |
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119 return mangle(self.local.foo(unmangle(one), unmangle(two))) |
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120 def bar(self, b, a): |
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121 return mangle(self.local.bar(unmangle(b), unmangle(a))) |
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122 def greet(self, name): |
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123 return mangle(self.local.greet(unmangle(name))) |
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124 myserver = server(mylocal) |
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125 |
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126 # local side |
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127 |
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128 # equivalent of wireproto.encode/decodelist, that is, type-specific marshalling |
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129 # here we just transform the strings a bit to check we're properly en-/decoding |
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130 def mangle(s): |
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131 return ''.join(chr(ord(c) + 1) for c in s) |
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132 def unmangle(s): |
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133 return ''.join(chr(ord(c) - 1) for c in s) |
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134 |
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135 # equivalent of wireproto.wirerepository and something like http's wire format |
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136 class remotething(thing): |
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137 def __init__(self, server): |
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138 self.server = server |
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139 def _submitone(self, name, args): |
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140 req = name + '?' + '&'.join(['%s=%s' % (n, v) for n, v in args]) |
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141 return self.server.perform(req) |
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142 def _submitbatch(self, cmds): |
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143 req = [] |
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144 for name, args in cmds: |
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145 args = ','.join(n + '=' + escapearg(v) for n, v in args) |
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146 req.append(name + ':' + args) |
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147 req = ';'.join(req) |
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148 res = self._submitone('batch', [('cmds', req,)]) |
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149 return res.split(';') |
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150 |
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151 def batch(self): |
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152 return wireproto.remotebatch(self) |
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153 |
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154 @peer.batchable |
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155 def foo(self, one, two=None): |
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156 if not one: |
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157 yield "Nope", None |
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158 encargs = [('one', mangle(one),), ('two', mangle(two),)] |
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159 encresref = peer.future() |
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160 yield encargs, encresref |
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161 yield unmangle(encresref.value) |
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162 |
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163 @peer.batchable |
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164 def bar(self, b, a): |
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165 encresref = peer.future() |
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166 yield [('b', mangle(b),), ('a', mangle(a),)], encresref |
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167 yield unmangle(encresref.value) |
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168 |
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169 # greet is coded directly. It therefore does not support batching. If it |
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170 # does appear in a batch, the batch is split around greet, and the call to |
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171 # greet is done in its own roundtrip. |
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172 def greet(self, name=None): |
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173 return unmangle(self._submitone('greet', [('name', mangle(name),)])) |
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174 |
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175 # demo remote usage |
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176 |
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177 myproxy = remotething(myserver) |
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178 print() |
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179 print("== Remote") |
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180 use(myproxy) |