strip: enhance repair.strip to receive a list of nodes (
issue3299)
Originally, mq.strip called repair.strip a single rev at a time.
repair.strip stores in a backup bundle any revision greater than
the revision being stripped, strips, then restores the backup with
repo.addchangegroup. So, when stripping revisions on more than one
topological branch, some could end up being restored from the backup
bundle, only to be later removed by a subsequent repair.strip call.
But repo.addchangegroup calls hooks for all those restore operations.
And
9df9444e96ec changed it to delay all hook calls until the
repository lock were released - by mq.strip, after stripping all
revisions. Thus, the hooks could be called over revisions already
removed from the repository at that point.
By generating the revision lists at once inside repo.strip, we avoid
calling addchangegroup for temporary restores. Incidentally, this
also avoids creating many backup files for a single strip command.
# httprepo.py - HTTP repository proxy classes for mercurial
#
# Copyright 2005, 2006 Matt Mackall <mpm@selenic.com>
# Copyright 2006 Vadim Gelfer <vadim.gelfer@gmail.com>
#
# This software may be used and distributed according to the terms of the
# GNU General Public License version 2 or any later version.
from node import nullid
from i18n import _
import changegroup, statichttprepo, error, httpconnection, url, util, wireproto
import os, urllib, urllib2, zlib, httplib
import errno, socket
def zgenerator(f):
zd = zlib.decompressobj()
try:
for chunk in util.filechunkiter(f):
while chunk:
yield zd.decompress(chunk, 2**18)
chunk = zd.unconsumed_tail
except httplib.HTTPException:
raise IOError(None, _('connection ended unexpectedly'))
yield zd.flush()
class httprepository(wireproto.wirerepository):
def __init__(self, ui, path):
self.path = path
self.caps = None
self.handler = None
self.urlopener = None
u = util.url(path)
if u.query or u.fragment:
raise util.Abort(_('unsupported URL component: "%s"') %
(u.query or u.fragment))
# urllib cannot handle URLs with embedded user or passwd
self._url, authinfo = u.authinfo()
self.ui = ui
self.ui.debug('using %s\n' % self._url)
self.urlopener = url.opener(ui, authinfo)
def __del__(self):
if self.urlopener:
for h in self.urlopener.handlers:
h.close()
getattr(h, "close_all", lambda : None)()
def url(self):
return self.path
# look up capabilities only when needed
def _fetchcaps(self):
self.caps = set(self._call('capabilities').split())
def get_caps(self):
if self.caps is None:
try:
self._fetchcaps()
except error.RepoError:
self.caps = set()
self.ui.debug('capabilities: %s\n' %
(' '.join(self.caps or ['none'])))
return self.caps
capabilities = property(get_caps)
def lock(self):
raise util.Abort(_('operation not supported over http'))
def _callstream(self, cmd, **args):
if cmd == 'pushkey':
args['data'] = ''
data = args.pop('data', None)
size = 0
if util.safehasattr(data, 'length'):
size = data.length
elif data is not None:
size = len(data)
headers = args.pop('headers', {})
if size and self.ui.configbool('ui', 'usehttp2', False):
headers['Expect'] = '100-Continue'
headers['X-HgHttp2'] = '1'
self.ui.debug("sending %s command\n" % cmd)
q = [('cmd', cmd)]
headersize = 0
if len(args) > 0:
httpheader = self.capable('httpheader')
if httpheader:
headersize = int(httpheader.split(',')[0])
if headersize > 0:
# The headers can typically carry more data than the URL.
encargs = urllib.urlencode(sorted(args.items()))
headerfmt = 'X-HgArg-%s'
contentlen = headersize - len(headerfmt % '000' + ': \r\n')
headernum = 0
for i in xrange(0, len(encargs), contentlen):
headernum += 1
header = headerfmt % str(headernum)
headers[header] = encargs[i:i + contentlen]
varyheaders = [headerfmt % str(h) for h in range(1, headernum + 1)]
headers['Vary'] = ','.join(varyheaders)
else:
q += sorted(args.items())
qs = '?%s' % urllib.urlencode(q)
cu = "%s%s" % (self._url, qs)
req = urllib2.Request(cu, data, headers)
if data is not None:
self.ui.debug("sending %s bytes\n" % size)
req.add_unredirected_header('Content-Length', '%d' % size)
try:
resp = self.urlopener.open(req)
except urllib2.HTTPError, inst:
if inst.code == 401:
raise util.Abort(_('authorization failed'))
raise
except httplib.HTTPException, inst:
self.ui.debug('http error while sending %s command\n' % cmd)
self.ui.traceback()
raise IOError(None, inst)
except IndexError:
# this only happens with Python 2.3, later versions raise URLError
raise util.Abort(_('http error, possibly caused by proxy setting'))
# record the url we got redirected to
resp_url = resp.geturl()
if resp_url.endswith(qs):
resp_url = resp_url[:-len(qs)]
if self._url.rstrip('/') != resp_url.rstrip('/'):
if not self.ui.quiet:
self.ui.warn(_('real URL is %s\n') % resp_url)
self._url = resp_url
try:
proto = resp.getheader('content-type')
except AttributeError:
proto = resp.headers.get('content-type', '')
safeurl = util.hidepassword(self._url)
if proto.startswith('application/hg-error'):
raise error.OutOfBandError(resp.read())
# accept old "text/plain" and "application/hg-changegroup" for now
if not (proto.startswith('application/mercurial-') or
proto.startswith('text/plain') or
proto.startswith('application/hg-changegroup')):
self.ui.debug("requested URL: '%s'\n" % util.hidepassword(cu))
raise error.RepoError(
_("'%s' does not appear to be an hg repository:\n"
"---%%<--- (%s)\n%s\n---%%<---\n")
% (safeurl, proto or 'no content-type', resp.read()))
if proto.startswith('application/mercurial-'):
try:
version = proto.split('-', 1)[1]
version_info = tuple([int(n) for n in version.split('.')])
except ValueError:
raise error.RepoError(_("'%s' sent a broken Content-Type "
"header (%s)") % (safeurl, proto))
if version_info > (0, 1):
raise error.RepoError(_("'%s' uses newer protocol %s") %
(safeurl, version))
return resp
def _call(self, cmd, **args):
fp = self._callstream(cmd, **args)
try:
return fp.read()
finally:
# if using keepalive, allow connection to be reused
fp.close()
def _callpush(self, cmd, cg, **args):
# have to stream bundle to a temp file because we do not have
# http 1.1 chunked transfer.
types = self.capable('unbundle')
try:
types = types.split(',')
except AttributeError:
# servers older than d1b16a746db6 will send 'unbundle' as a
# boolean capability. They only support headerless/uncompressed
# bundles.
types = [""]
for x in types:
if x in changegroup.bundletypes:
type = x
break
tempname = changegroup.writebundle(cg, None, type)
fp = httpconnection.httpsendfile(self.ui, tempname, "rb")
headers = {'Content-Type': 'application/mercurial-0.1'}
try:
try:
r = self._call(cmd, data=fp, headers=headers, **args)
vals = r.split('\n', 1)
if len(vals) < 2:
raise error.ResponseError(_("unexpected response:"), r)
return vals
except socket.error, err:
if err.args[0] in (errno.ECONNRESET, errno.EPIPE):
raise util.Abort(_('push failed: %s') % err.args[1])
raise util.Abort(err.args[1])
finally:
fp.close()
os.unlink(tempname)
def _abort(self, exception):
raise exception
def _decompress(self, stream):
return util.chunkbuffer(zgenerator(stream))
class httpsrepository(httprepository):
def __init__(self, ui, path):
if not url.has_https:
raise util.Abort(_('Python support for SSL and HTTPS '
'is not installed'))
httprepository.__init__(self, ui, path)
def instance(ui, path, create):
if create:
raise util.Abort(_('cannot create new http repository'))
try:
if path.startswith('https:'):
inst = httpsrepository(ui, path)
else:
inst = httprepository(ui, path)
try:
# Try to do useful work when checking compatibility.
# Usually saves a roundtrip since we want the caps anyway.
inst._fetchcaps()
except error.RepoError:
# No luck, try older compatibility check.
inst.between([(nullid, nullid)])
return inst
except error.RepoError, httpexception:
try:
r = statichttprepo.instance(ui, "static-" + path, create)
ui.note('(falling back to static-http)\n')
return r
except error.RepoError:
raise httpexception # use the original http RepoError instead