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33ebd50b83
The new http library is wired in via an extra module (httpconnection.py), as it requires similar but different plumbing to connect the library to Mercurial's internals and urllib2. Eventualy we should be able to remove all of keepalive.py and its associated tangle in url.py and replace it all with the code in httpconnection.py. To use the new library, set 'ui.usehttp2' to true. The underlying http library uses the logging module liberally, so if things break you can use 'ui.http2debuglevel' to set the log level to INFO or DEBUG to get that logging information (for example, ui.http2debuglevel=info.)
238 lines
8.6 KiB
Python
238 lines
8.6 KiB
Python
# httprepo.py - HTTP repository proxy classes for mercurial
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#
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# Copyright 2005, 2006 Matt Mackall <mpm@selenic.com>
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# Copyright 2006 Vadim Gelfer <vadim.gelfer@gmail.com>
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#
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# This software may be used and distributed according to the terms of the
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# GNU General Public License version 2 or any later version.
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from node import nullid
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from i18n import _
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import changegroup, statichttprepo, error, httpconnection, url, util, wireproto
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import os, urllib, urllib2, zlib, httplib
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import errno, socket
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def zgenerator(f):
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zd = zlib.decompressobj()
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try:
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for chunk in util.filechunkiter(f):
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while chunk:
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yield zd.decompress(chunk, 2**18)
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chunk = zd.unconsumed_tail
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except httplib.HTTPException:
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raise IOError(None, _('connection ended unexpectedly'))
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yield zd.flush()
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class httprepository(wireproto.wirerepository):
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def __init__(self, ui, path):
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self.path = path
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self.caps = None
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self.handler = None
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u = util.url(path)
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if u.query or u.fragment:
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raise util.Abort(_('unsupported URL component: "%s"') %
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(u.query or u.fragment))
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# urllib cannot handle URLs with embedded user or passwd
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self._url, authinfo = u.authinfo()
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self.ui = ui
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self.ui.debug('using %s\n' % self._url)
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self.urlopener = url.opener(ui, authinfo)
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def __del__(self):
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for h in self.urlopener.handlers:
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h.close()
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if hasattr(h, "close_all"):
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h.close_all()
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def url(self):
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return self.path
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# look up capabilities only when needed
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def _fetchcaps(self):
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self.caps = set(self._call('capabilities').split())
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def get_caps(self):
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if self.caps is None:
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try:
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self._fetchcaps()
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except error.RepoError:
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self.caps = set()
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self.ui.debug('capabilities: %s\n' %
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(' '.join(self.caps or ['none'])))
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return self.caps
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capabilities = property(get_caps)
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def lock(self):
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raise util.Abort(_('operation not supported over http'))
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def _callstream(self, cmd, **args):
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if cmd == 'pushkey':
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args['data'] = ''
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data = args.pop('data', None)
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headers = args.pop('headers', {})
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if data and self.ui.configbool('ui', 'usehttp2', False):
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headers['Expect'] = '100-Continue'
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self.ui.debug("sending %s command\n" % cmd)
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q = [('cmd', cmd)]
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headersize = 0
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if len(args) > 0:
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httpheader = self.capable('httpheader')
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if httpheader:
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headersize = int(httpheader.split(',')[0])
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if headersize > 0:
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# The headers can typically carry more data than the URL.
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encargs = urllib.urlencode(sorted(args.items()))
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headerfmt = 'X-HgArg-%s'
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contentlen = headersize - len(headerfmt % '000' + ': \r\n')
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headernum = 0
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for i in xrange(0, len(encargs), contentlen):
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headernum += 1
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header = headerfmt % str(headernum)
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headers[header] = encargs[i:i + contentlen]
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varyheaders = [headerfmt % str(h) for h in range(1, headernum + 1)]
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headers['Vary'] = ','.join(varyheaders)
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else:
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q += sorted(args.items())
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qs = '?%s' % urllib.urlencode(q)
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cu = "%s%s" % (self._url, qs)
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req = urllib2.Request(cu, data, headers)
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if data is not None:
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# len(data) is broken if data doesn't fit into Py_ssize_t
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# add the header ourself to avoid OverflowError
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size = data.__len__()
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self.ui.debug("sending %s bytes\n" % size)
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req.add_unredirected_header('Content-Length', '%d' % size)
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try:
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resp = self.urlopener.open(req)
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except urllib2.HTTPError, inst:
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if inst.code == 401:
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raise util.Abort(_('authorization failed'))
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raise
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except httplib.HTTPException, inst:
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self.ui.debug('http error while sending %s command\n' % cmd)
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self.ui.traceback()
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raise IOError(None, inst)
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except IndexError:
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# this only happens with Python 2.3, later versions raise URLError
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raise util.Abort(_('http error, possibly caused by proxy setting'))
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# record the url we got redirected to
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resp_url = resp.geturl()
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if resp_url.endswith(qs):
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resp_url = resp_url[:-len(qs)]
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if self._url.rstrip('/') != resp_url.rstrip('/'):
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self.ui.status(_('real URL is %s\n') % resp_url)
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self._url = resp_url
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try:
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proto = resp.getheader('content-type')
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except AttributeError:
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proto = resp.headers.get('content-type', '')
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safeurl = util.hidepassword(self._url)
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# accept old "text/plain" and "application/hg-changegroup" for now
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if not (proto.startswith('application/mercurial-') or
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proto.startswith('text/plain') or
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proto.startswith('application/hg-changegroup')):
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self.ui.debug("requested URL: '%s'\n" % util.hidepassword(cu))
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raise error.RepoError(
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_("'%s' does not appear to be an hg repository:\n"
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"---%%<--- (%s)\n%s\n---%%<---\n")
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% (safeurl, proto or 'no content-type', resp.read()))
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if proto.startswith('application/mercurial-'):
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try:
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version = proto.split('-', 1)[1]
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version_info = tuple([int(n) for n in version.split('.')])
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except ValueError:
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raise error.RepoError(_("'%s' sent a broken Content-Type "
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"header (%s)") % (safeurl, proto))
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if version_info > (0, 1):
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raise error.RepoError(_("'%s' uses newer protocol %s") %
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(safeurl, version))
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return resp
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def _call(self, cmd, **args):
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fp = self._callstream(cmd, **args)
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try:
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return fp.read()
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finally:
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# if using keepalive, allow connection to be reused
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fp.close()
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def _callpush(self, cmd, cg, **args):
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# have to stream bundle to a temp file because we do not have
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# http 1.1 chunked transfer.
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types = self.capable('unbundle')
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try:
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types = types.split(',')
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except AttributeError:
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# servers older than d1b16a746db6 will send 'unbundle' as a
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# boolean capability. They only support headerless/uncompressed
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# bundles.
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types = [""]
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for x in types:
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if x in changegroup.bundletypes:
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type = x
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break
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tempname = changegroup.writebundle(cg, None, type)
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fp = httpconnection.httpsendfile(self.ui, tempname, "rb")
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headers = {'Content-Type': 'application/mercurial-0.1'}
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try:
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try:
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r = self._call(cmd, data=fp, headers=headers, **args)
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return r.split('\n', 1)
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except socket.error, err:
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if err.args[0] in (errno.ECONNRESET, errno.EPIPE):
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raise util.Abort(_('push failed: %s') % err.args[1])
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raise util.Abort(err.args[1])
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finally:
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fp.close()
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os.unlink(tempname)
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def _abort(self, exception):
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raise exception
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def _decompress(self, stream):
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return util.chunkbuffer(zgenerator(stream))
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class httpsrepository(httprepository):
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def __init__(self, ui, path):
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if not url.has_https:
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raise util.Abort(_('Python support for SSL and HTTPS '
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'is not installed'))
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httprepository.__init__(self, ui, path)
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def instance(ui, path, create):
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if create:
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raise util.Abort(_('cannot create new http repository'))
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try:
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if path.startswith('https:'):
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inst = httpsrepository(ui, path)
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else:
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inst = httprepository(ui, path)
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try:
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# Try to do useful work when checking compatibility.
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# Usually saves a roundtrip since we want the caps anyway.
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inst._fetchcaps()
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except error.RepoError:
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# No luck, try older compatibility check.
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inst.between([(nullid, nullid)])
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return inst
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except error.RepoError, httpexception:
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try:
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r = statichttprepo.instance(ui, "static-" + path, create)
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ui.note('(falling back to static-http)\n')
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return r
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except error.RepoError:
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raise httpexception # use the original http RepoError instead
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