view hg @ 17734:619068c280fd

contrib: add a commit synthesizer for reproducing scaling problems

This adds two new commands:

- analyze examines an existing repo and writes out a statistical
  description of its properties that contains no identifying
  information.

- synthesize creates new commits based on the description generated
  by analyze.

The intention is that a repo constructed using synthesize will have
properties that are vaguely statistically similar to the originating
repo, but entirely random content.

This can be useful for forecasting performance as a repo grows, and
for developers who want to find bottlenecks in proprietary repos
to which they do not have access.

#!/usr/bin/env python
#
# mercurial - scalable distributed SCM
#
# Copyright 2005-2007 Matt Mackall <[e-mail]>
#
# This software may be used and distributed according to the terms of the
# GNU General Public License version 2 or any later version.

import os
import sys

libdir = '@LIBDIR@'

if libdir != '@' 'LIBDIR' '@':
    if not os.path.isabs(libdir):
        libdir = os.path.join(os.path.dirname(os.path.realpath(__file__)),
                              libdir)
        libdir = os.path.abspath(libdir)
    sys.path.insert(0, libdir)

# enable importing on demand to reduce startup time
try:
    from mercurial import demandimport; demandimport.enable()
except ImportError:
    import sys
    sys.stderr.write("abort: couldn't find mercurial libraries in [%s]\n" %
                     ' '.join(sys.path))
    sys.stderr.write("(check your install and PYTHONPATH)\n")
    sys.exit(-1)

import mercurial.util
import mercurial.dispatch

for fp in (sys.stdin, sys.stdout, sys.stderr):
    mercurial.util.setbinary(fp)

mercurial.dispatch.run()