Mercurial > hg
view mercurial/hgweb/request.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 | a2df85adface |
children | 09b1c9ef317c |
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# hgweb/request.py - An http request from either CGI or the standalone server. # # Copyright 21 May 2005 - (c) 2005 Jake Edge <jake@edge2.net> # 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 mercurial.demandload import demandload demandload(globals(), "socket sys cgi os errno") from mercurial.i18n import gettext as _ class hgrequest(object): def __init__(self, inp=None, out=None, env=None): self.inp = inp or sys.stdin self.out = out or sys.stdout self.env = env or os.environ self.form = cgi.parse(self.inp, self.env, keep_blank_values=1) self.will_close = True def write(self, *things): for thing in things: if hasattr(thing, "__iter__"): for part in thing: self.write(part) else: try: self.out.write(str(thing)) except socket.error, inst: if inst[0] != errno.ECONNRESET: raise def done(self): if self.will_close: self.inp.close() self.out.close() else: self.out.flush() def header(self, headers=[('Content-type','text/html')]): for header in headers: self.out.write("%s: %s\r\n" % header) self.out.write("\r\n") def httphdr(self, type, filename=None, length=0): headers = [('Content-type', type)] if filename: headers.append(('Content-disposition', 'attachment; filename=%s' % filename)) # we do not yet support http 1.1 chunked transfer, so we have # to force connection to close if content-length not known if length: headers.append(('Content-length', str(length))) self.will_close = False else: headers.append(('Connection', 'close')) self.will_close = True self.header(headers)