wireprotov2peer: always return a bool from _processredirect()
Without this, we may stop servicing the redirect response if the
future has already been resolved. And the future will often be
resolved very early, since many consumers iterate the decoded
CBOR object stream and expect data to lazily arrive.
# Copyright 2010-2011 Fog Creek Software
# Copyright 2010-2011 Unity Technologies
#
# This software may be used and distributed according to the terms of the
# GNU General Public License version 2 or any later version.
'''remote largefile store; the base class for wirestore'''
from __future__ import absolute_import
from mercurial.i18n import _
from mercurial import (
error,
util,
)
from mercurial.utils import (
stringutil,
)
from . import (
basestore,
lfutil,
localstore,
)
urlerr = util.urlerr
urlreq = util.urlreq
class remotestore(basestore.basestore):
'''a largefile store accessed over a network'''
def __init__(self, ui, repo, url):
super(remotestore, self).__init__(ui, repo, url)
self._lstore = None
if repo is not None:
self._lstore = localstore.localstore(self.ui, self.repo, self.repo)
def put(self, source, hash):
if self.sendfile(source, hash):
raise error.Abort(
_('remotestore: could not put %s to remote store %s')
% (source, util.hidepassword(self.url)))
self.ui.debug(
_('remotestore: put %s to remote store %s\n')
% (source, util.hidepassword(self.url)))
def exists(self, hashes):
return dict((h, s == 0) for (h, s) in # dict-from-generator
self._stat(hashes).iteritems())
def sendfile(self, filename, hash):
self.ui.debug('remotestore: sendfile(%s, %s)\n' % (filename, hash))
try:
with lfutil.httpsendfile(self.ui, filename) as fd:
return self._put(hash, fd)
except IOError as e:
raise error.Abort(
_('remotestore: could not open file %s: %s')
% (filename, stringutil.forcebytestr(e)))
def _getfile(self, tmpfile, filename, hash):
try:
chunks = self._get(hash)
except urlerr.httperror as e:
# 401s get converted to error.Aborts; everything else is fine being
# turned into a StoreError
raise basestore.StoreError(filename, hash, self.url,
stringutil.forcebytestr(e))
except urlerr.urlerror as e:
# This usually indicates a connection problem, so don't
# keep trying with the other files... they will probably
# all fail too.
raise error.Abort('%s: %s' %
(util.hidepassword(self.url), e.reason))
except IOError as e:
raise basestore.StoreError(filename, hash, self.url,
stringutil.forcebytestr(e))
return lfutil.copyandhash(chunks, tmpfile)
def _hashesavailablelocally(self, hashes):
existslocallymap = self._lstore.exists(hashes)
localhashes = [hash for hash in hashes if existslocallymap[hash]]
return localhashes
def _verifyfiles(self, contents, filestocheck):
failed = False
expectedhashes = [expectedhash
for cset, filename, expectedhash in filestocheck]
localhashes = self._hashesavailablelocally(expectedhashes)
stats = self._stat([expectedhash for expectedhash in expectedhashes
if expectedhash not in localhashes])
for cset, filename, expectedhash in filestocheck:
if expectedhash in localhashes:
filetocheck = (cset, filename, expectedhash)
verifyresult = self._lstore._verifyfiles(contents,
[filetocheck])
if verifyresult:
failed = True
else:
stat = stats[expectedhash]
if stat:
if stat == 1:
self.ui.warn(
_('changeset %s: %s: contents differ\n')
% (cset, filename))
failed = True
elif stat == 2:
self.ui.warn(
_('changeset %s: %s missing\n')
% (cset, filename))
failed = True
else:
raise RuntimeError('verify failed: unexpected response '
'from statlfile (%r)' % stat)
return failed
def _put(self, hash, fd):
'''Put file with the given hash in the remote store.'''
raise NotImplementedError('abstract method')
def _get(self, hash):
'''Get a iterator for content with the given hash.'''
raise NotImplementedError('abstract method')
def _stat(self, hashes):
'''Get information about availability of files specified by
hashes in the remote store. Return dictionary mapping hashes
to return code where 0 means that file is available, other
values if not.'''
raise NotImplementedError('abstract method')