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annotate tests/artifacts/scripts/generate-churning-bundle.py @ 41326:b59676077654 stable

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test: stabilize bundle generation for test-sparse-revlog.t To reduce the instability in the bundle binary content, we force it to contains delta against p1 in all cases. In the previous changeset, we already stabilized the processing of the bundle. So we don't see any output change in the test itself.
author Pierre-Yves David <pierre-yves.david@octobus.net>
date Sun, 24 Feb 2019 19:56:46 +0100
parents 4ca7a67c94c8
children 5f198b690301
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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1 #!/usr/bin/env python
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2 #
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3 # generate-branchy-bundle - generate a branch for a "large" branchy repository
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4 #
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5 # Copyright 2018 Octobus, contact@octobus.net
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6 #
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7 # This software may be used and distributed according to the terms of the
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8 # GNU General Public License version 2 or any later version.
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9 #
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10 # This script generates a repository suitable for testing delta computation
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11 # strategies.
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12 #
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13 # The repository update a single "large" file with many updates. One fixed part
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14 # of the files always get updated while the rest of the lines get updated over
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15 # time. This update happens over many topological branches, some getting merged
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16 # back.
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17 #
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18 # Running with `chg` in your path and `CHGHG` set is recommended for speed.
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19
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20 from __future__ import absolute_import, print_function
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21
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22 import hashlib
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23 import os
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24 import shutil
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25 import subprocess
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26 import sys
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27 import tempfile
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28
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29 BUNDLE_NAME = 'big-file-churn.hg'
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30
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31 # constants for generating the repository
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32 NB_CHANGESET = 5000
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33 PERIOD_MERGING = 8
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34 PERIOD_BRANCHING = 7
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35 MOVE_BACK_MIN = 3
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36 MOVE_BACK_RANGE = 5
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37
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38 # constants for generating the large file we keep updating
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39 #
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40 # At each revision, the beginning on the file change,
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41 # and set of other lines changes too.
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42 FILENAME='SPARSE-REVLOG-TEST-FILE'
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43 NB_LINES = 10500
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44 ALWAYS_CHANGE_LINES = 500
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45 FILENAME = 'SPARSE-REVLOG-TEST-FILE'
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46 OTHER_CHANGES = 300
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47
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48 def nextcontent(previous_content):
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49 """utility to produce a new file content from the previous one"""
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50 return hashlib.md5(previous_content).hexdigest()
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51
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52 def filecontent(iteridx, oldcontent):
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53 """generate a new file content
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54
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55 The content is generated according the iteration index and previous
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56 content"""
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57
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58 # initial call
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59 if iteridx is None:
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60 current = ''
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61 else:
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62 current = str(iteridx)
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63
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64 for idx in xrange(NB_LINES):
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65 do_change_line = True
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66 if oldcontent is not None and ALWAYS_CHANGE_LINES < idx:
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67 do_change_line = not ((idx - iteridx) % OTHER_CHANGES)
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68
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69 if do_change_line:
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70 to_write = current + '\n'
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71 current = nextcontent(current)
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72 else:
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73 to_write = oldcontent[idx]
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74 yield to_write
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75
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76 def updatefile(filename, idx):
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77 """update <filename> to be at appropriate content for iteration <idx>"""
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78 existing = None
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79 if idx is not None:
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80 with open(filename, 'rb') as old:
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81 existing = old.readlines()
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82 with open(filename, 'wb') as target:
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83 for line in filecontent(idx, existing):
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84 target.write(line)
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85
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86 def hg(command, *args):
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87 """call a mercurial command with appropriate config and argument"""
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88 env = os.environ.copy()
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89 if 'CHGHG' in env:
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90 full_cmd = ['chg']
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91 else:
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92 full_cmd = ['hg']
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93 full_cmd.append('--quiet')
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94 full_cmd.append(command)
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95 if command == 'commit':
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96 # reproducible commit metadata
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97 full_cmd.extend(['--date', '0 0', '--user', 'test'])
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98 elif command == 'merge':
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99 # avoid conflicts by picking the local variant
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100 full_cmd.extend(['--tool', ':merge-local'])
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101 full_cmd.extend(args)
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102 env['HGRCPATH'] = ''
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103 return subprocess.check_call(full_cmd, env=env)
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104
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105 def run(target):
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106 tmpdir = tempfile.mkdtemp(prefix='tmp-hg-test-big-file-bundle-')
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107 try:
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108 os.chdir(tmpdir)
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109 hg('init')
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110 updatefile(FILENAME, None)
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111 hg('commit', '--addremove', '--message', 'initial commit')
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112 for idx in xrange(1, NB_CHANGESET + 1):
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113 if sys.stdout.isatty():
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114 print("generating commit #%d/%d" % (idx, NB_CHANGESET))
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115 if (idx % PERIOD_BRANCHING) == 0:
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116 move_back = MOVE_BACK_MIN + (idx % MOVE_BACK_RANGE)
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117 hg('update', ".~%d" % move_back)
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118 if (idx % PERIOD_MERGING) == 0:
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119 hg('merge', 'min(head())')
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120 updatefile(FILENAME, idx)
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121 hg('commit', '--message', 'commit #%d' % idx)
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122 hg('bundle', '--all', target, '--config', 'devel.bundle.delta=p1')
39508
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Boris Feld <boris.feld@octobus.net>
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123 with open(target, 'rb') as bundle:
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124 data = bundle.read()
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125 digest = hashlib.md5(data).hexdigest()
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126 with open(target + '.md5', 'wb') as md5file:
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127 md5file.write(digest + '\n')
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Boris Feld <boris.feld@octobus.net>
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128 if sys.stdout.isatty():
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129 print('bundle generated at "%s" md5: %s' % (target, digest))
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130
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131 finally:
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132 shutil.rmtree(tmpdir)
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133 return 0
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134
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135 if __name__ == '__main__':
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Boris Feld <boris.feld@octobus.net>
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136 orig = os.path.realpath(os.path.dirname(sys.argv[0]))
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137 target = os.path.join(orig, os.pardir, 'cache', BUNDLE_NAME)
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Boris Feld <boris.feld@octobus.net>
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138 sys.exit(run(target))
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139