Mercurial > hg
view mercurial/httprangereader.py @ 1877:d314a89fa4f1
change lock format to let us detect and break stale locks.
old style: symlink to pid
new style: symlink to hostname:pid
if lock code finds new-style lock, it breaks lock if locking pid is on
same machine and pid is not alive.
otherwise, lock is left alone. this makes locking code safe with
old-style locks and with locks on other machines.
new code makes server part of mercurial more robust in case machine
crashes, power fails, or crazy user does kill -9.
author | Vadim Gelfer <vadim.gelfer@gmail.com> |
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date | Fri, 10 Mar 2006 08:31:31 -0800 |
parents | 59b3639df0a9 |
children | f5046cab9e2e |
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# httprangereader.py - just what it says # # Copyright 2005 Matt Mackall <mpm@selenic.com> # # This software may be used and distributed according to the terms # of the GNU General Public License, incorporated herein by reference. import byterange, urllib2 class httprangereader(object): def __init__(self, url): self.url = url self.pos = 0 def seek(self, pos): self.pos = pos def read(self, bytes=None): opener = urllib2.build_opener(byterange.HTTPRangeHandler()) urllib2.install_opener(opener) req = urllib2.Request(self.url) end = '' if bytes: end = self.pos + bytes req.add_header('Range', 'bytes=%d-%s' % (self.pos, end)) f = urllib2.urlopen(req) return f.read()