Mercurial > hg-stable
view contrib/undumprevlog @ 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.
author | Bryan O'Sullivan <bryano@fb.com> |
---|---|
date | Mon, 08 Oct 2012 15:57:21 -0700 |
parents | 659f34b833b9 |
children | cba222f01056 |
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#!/usr/bin/env python # Undump a dump from dumprevlog # $ hg init # $ undumprevlog < repo.dump import sys from mercurial import revlog, node, scmutil, util, transaction for fp in (sys.stdin, sys.stdout, sys.stderr): util.setbinary(fp) opener = scmutil.opener('.', False) tr = transaction.transaction(sys.stderr.write, opener, "undump.journal") while 1: l = sys.stdin.readline() if not l: break if l.startswith("file:"): f = l[6:-1] r = revlog.revlog(opener, f) print f elif l.startswith("node:"): n = node.bin(l[6:-1]) elif l.startswith("linkrev:"): lr = int(l[9:-1]) elif l.startswith("parents:"): p = l[9:-1].split() p1 = node.bin(p[0]) p2 = node.bin(p[1]) elif l.startswith("length:"): length = int(l[8:-1]) sys.stdin.readline() # start marker d = sys.stdin.read(length) sys.stdin.readline() # end marker r.addrevision(d, tr, lr, p1, p2) tr.close()