Mercurial > hg
view mercurial/changelog.py @ 2439:e8c4f3d3df8c
extend network protocol to stop clients from locking servers
now all repositories have capabilities slot, tuple with list of names.
if 'unbundle' capability present, repo supports push where client does
not need to lock server. repository classes that have unbundle capability
also have unbundle method.
implemented for ssh now, will be base for push over http.
unbundle protocol acts this way. server tells client what heads it
has during normal negotiate step. client starts unbundle by repeat
server's heads back to it. if server has new heads, abort immediately.
otherwise, transfer changes to server. once data transferred, server
locks and checks heads again. if heads same, changes can be added.
else someone else added heads, and server aborts.
if client wants to force server to add heads, sends special heads list of
'force'.
author | Vadim Gelfer <vadim.gelfer@gmail.com> |
---|---|
date | Thu, 15 Jun 2006 16:37:23 -0700 |
parents | 8a1e2a9c7013 |
children | 85f796baab10 |
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# changelog.py - changelog class for mercurial # # 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. from revlog import * from i18n import gettext as _ from demandload import demandload demandload(globals(), "os time util") class changelog(revlog): def __init__(self, opener, defversion=REVLOGV0): revlog.__init__(self, opener, "00changelog.i", "00changelog.d", defversion) def extract(self, text): if not text: return (nullid, "", (0, 0), [], "") last = text.index("\n\n") desc = text[last + 2:] l = text[:last].splitlines() manifest = bin(l[0]) user = l[1] date = l[2].split(' ') time = float(date.pop(0)) try: # various tools did silly things with the time zone field. timezone = int(date[0]) except: timezone = 0 files = l[3:] return (manifest, user, (time, timezone), files, desc) def read(self, node): return self.extract(self.revision(node)) def add(self, manifest, list, desc, transaction, p1=None, p2=None, user=None, date=None): if date: # validate explicit (probably user-specified) date and # time zone offset. values must fit in signed 32 bits for # current 32-bit linux runtimes. timezones go from UTC-12 # to UTC+14 try: when, offset = map(int, date.split(' ')) except ValueError: raise ValueError(_('invalid date: %r') % date) if abs(when) > 0x7fffffff: raise ValueError(_('date exceeds 32 bits: %d') % when) if offset < -50400 or offset > 43200: raise ValueError(_('impossible time zone offset: %d') % offset) else: date = "%d %d" % util.makedate() list.sort() l = [hex(manifest), user, date] + list + ["", desc] text = "\n".join(l) return self.addrevision(text, transaction, self.count(), p1, p2)