Mercurial > public > mercurial-scm > hg-stable

annotate tests/artifacts/scripts/generate-churning-bundle.py @ 43076:2372284d9457

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formatting: blacken the codebase This is using my patch to black (https://github.com/psf/black/pull/826) so we don't un-wrap collection literals. Done with: hg files 'set:**.py - mercurial/thirdparty/** - "contrib/python-zstandard/**"' | xargs black -S # skip-blame mass-reformatting only # no-check-commit reformats foo_bar functions Differential Revision: https://phab.mercurial-scm.org/D6971
author Augie Fackler <augie@google.com>
date Sun, 06 Oct 2019 09:45:02 -0400
parents 5f198b690301
children 1fcf79e9943a
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 OTHER_CHANGES = 300
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46
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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
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53 def filecontent(iteridx, oldcontent):
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54 """generate a new file content
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55
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56 The content is generated according the iteration index and previous
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57 content"""
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58
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59 # initial call
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60 if iteridx is None:
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61 current = ''
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62 else:
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63 current = str(iteridx)
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64
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65 for idx in xrange(NB_LINES):
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66 do_change_line = True
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67 if oldcontent is not None and ALWAYS_CHANGE_LINES < idx:
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68 do_change_line = not ((idx - iteridx) % OTHER_CHANGES)
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69
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70 if do_change_line:
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71 to_write = current + '\n'
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72 current = nextcontent(current)
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73 else:
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74 to_write = oldcontent[idx]
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75 yield to_write
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76
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77
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78 def updatefile(filename, idx):
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79 """update <filename> to be at appropriate content for iteration <idx>"""
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80 existing = None
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81 if idx is not None:
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82 with open(filename, 'rb') as old:
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83 existing = old.readlines()
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84 with open(filename, 'wb') as target:
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85 for line in filecontent(idx, existing):
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86 target.write(line)
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87
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88
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89 def hg(command, *args):
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90 """call a mercurial command with appropriate config and argument"""
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91 env = os.environ.copy()
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92 if 'CHGHG' in env:
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93 full_cmd = ['chg']
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94 else:
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95 full_cmd = ['hg']
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96 full_cmd.append('--quiet')
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97 full_cmd.append(command)
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98 if command == 'commit':
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99 # reproducible commit metadata
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100 full_cmd.extend(['--date', '0 0', '--user', 'test'])
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101 elif command == 'merge':
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102 # avoid conflicts by picking the local variant
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103 full_cmd.extend(['--tool', ':merge-local'])
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104 full_cmd.extend(args)
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105 env['HGRCPATH'] = ''
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106 return subprocess.check_call(full_cmd, env=env)
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107
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108
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109 def run(target):
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110 tmpdir = tempfile.mkdtemp(prefix='tmp-hg-test-big-file-bundle-')
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111 try:
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112 os.chdir(tmpdir)
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113 hg('init')
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114 updatefile(FILENAME, None)
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115 hg('commit', '--addremove', '--message', 'initial commit')
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116 for idx in xrange(1, NB_CHANGESET + 1):
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117 if sys.stdout.isatty():
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118 print("generating commit #%d/%d" % (idx, NB_CHANGESET))
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119 if (idx % PERIOD_BRANCHING) == 0:
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Boris Feld <boris.feld@octobus.net>
parents:
diff changeset
120 move_back = MOVE_BACK_MIN + (idx % MOVE_BACK_RANGE)
4ca7a67c94c8 sparse-revlog: add a test checking revlog deltas for a churning file
Boris Feld <boris.feld@octobus.net>
parents:
diff changeset
121 hg('update', ".~%d" % move_back)
4ca7a67c94c8 sparse-revlog: add a test checking revlog deltas for a churning file
Boris Feld <boris.feld@octobus.net>
parents:
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122 if (idx % PERIOD_MERGING) == 0:
4ca7a67c94c8 sparse-revlog: add a test checking revlog deltas for a churning file
Boris Feld <boris.feld@octobus.net>
parents:
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123 hg('merge', 'min(head())')
4ca7a67c94c8 sparse-revlog: add a test checking revlog deltas for a churning file
Boris Feld <boris.feld@octobus.net>
parents:
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124 updatefile(FILENAME, idx)
4ca7a67c94c8 sparse-revlog: add a test checking revlog deltas for a churning file
Boris Feld <boris.feld@octobus.net>
parents:
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125 hg('commit', '--message', 'commit #%d' % idx)
41326
b59676077654 test: stabilize bundle generation for test-sparse-revlog.t
Pierre-Yves David <pierre-yves.david@octobus.net>
parents: 39508
diff changeset
126 hg('bundle', '--all', target, '--config', 'devel.bundle.delta=p1')
39508
4ca7a67c94c8 sparse-revlog: add a test checking revlog deltas for a churning file
Boris Feld <boris.feld@octobus.net>
parents:
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127 with open(target, 'rb') as bundle:
4ca7a67c94c8 sparse-revlog: add a test checking revlog deltas for a churning file
Boris Feld <boris.feld@octobus.net>
parents:
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128 data = bundle.read()
4ca7a67c94c8 sparse-revlog: add a test checking revlog deltas for a churning file
Boris Feld <boris.feld@octobus.net>
parents:
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129 digest = hashlib.md5(data).hexdigest()
4ca7a67c94c8 sparse-revlog: add a test checking revlog deltas for a churning file
Boris Feld <boris.feld@octobus.net>
parents:
diff changeset
130 with open(target + '.md5', 'wb') as md5file:
4ca7a67c94c8 sparse-revlog: add a test checking revlog deltas for a churning file
Boris Feld <boris.feld@octobus.net>
parents:
diff changeset
131 md5file.write(digest + '\n')
4ca7a67c94c8 sparse-revlog: add a test checking revlog deltas for a churning file
Boris Feld <boris.feld@octobus.net>
parents:
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132 if sys.stdout.isatty():
4ca7a67c94c8 sparse-revlog: add a test checking revlog deltas for a churning file
Boris Feld <boris.feld@octobus.net>
parents:
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133 print('bundle generated at "%s" md5: %s' % (target, digest))
4ca7a67c94c8 sparse-revlog: add a test checking revlog deltas for a churning file
Boris Feld <boris.feld@octobus.net>
parents:
diff changeset
134
4ca7a67c94c8 sparse-revlog: add a test checking revlog deltas for a churning file
Boris Feld <boris.feld@octobus.net>
parents:
diff changeset
135 finally:
4ca7a67c94c8 sparse-revlog: add a test checking revlog deltas for a churning file
Boris Feld <boris.feld@octobus.net>
parents:
diff changeset
136 shutil.rmtree(tmpdir)
4ca7a67c94c8 sparse-revlog: add a test checking revlog deltas for a churning file
Boris Feld <boris.feld@octobus.net>
parents:
diff changeset
137 return 0
4ca7a67c94c8 sparse-revlog: add a test checking revlog deltas for a churning file
Boris Feld <boris.feld@octobus.net>
parents:
diff changeset
138
43076
2372284d9457 formatting: blacken the codebase
Augie Fackler <augie@google.com>
parents: 41805
diff changeset
139
39508
4ca7a67c94c8 sparse-revlog: add a test checking revlog deltas for a churning file
Boris Feld <boris.feld@octobus.net>
parents:
diff changeset
140 if __name__ == '__main__':
4ca7a67c94c8 sparse-revlog: add a test checking revlog deltas for a churning file
Boris Feld <boris.feld@octobus.net>
parents:
diff changeset
141 orig = os.path.realpath(os.path.dirname(sys.argv[0]))
4ca7a67c94c8 sparse-revlog: add a test checking revlog deltas for a churning file
Boris Feld <boris.feld@octobus.net>
parents:
diff changeset
142 target = os.path.join(orig, os.pardir, 'cache', BUNDLE_NAME)
4ca7a67c94c8 sparse-revlog: add a test checking revlog deltas for a churning file
Boris Feld <boris.feld@octobus.net>
parents:
diff changeset
143 sys.exit(run(target))