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# Copyright 2010-2011 Fog Creek Software
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# Copyright 2010-2011 Unity Technologies
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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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'''remote largefile store; the base class for wirestore'''
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import urllib2
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from mercurial import util, wireproto, error
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from mercurial.i18n import _
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import lfutil
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import basestore
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class remotestore(basestore.basestore):
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'''a largefile store accessed over a network'''
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def __init__(self, ui, repo, url):
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super(remotestore, self).__init__(ui, repo, url)
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def put(self, source, hash):
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if self.sendfile(source, hash):
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raise error.Abort(
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_('remotestore: could not put %s to remote store %s')
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% (source, util.hidepassword(self.url)))
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self.ui.debug(
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_('remotestore: put %s to remote store %s\n')
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% (source, util.hidepassword(self.url)))
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def exists(self, hashes):
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return dict((h, s == 0) for (h, s) in # dict-from-generator
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self._stat(hashes).iteritems())
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def sendfile(self, filename, hash):
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self.ui.debug('remotestore: sendfile(%s, %s)\n' % (filename, hash))
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fd = None
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try:
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fd = lfutil.httpsendfile(self.ui, filename)
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return self._put(hash, fd)
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except IOError as e:
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raise error.Abort(
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_('remotestore: could not open file %s: %s')
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% (filename, str(e)))
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finally:
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if fd:
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fd.close()
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def _getfile(self, tmpfile, filename, hash):
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try:
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chunks = self._get(hash)
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except urllib2.HTTPError as e:
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# 401s get converted to error.Aborts; everything else is fine being
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# turned into a StoreError
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raise basestore.StoreError(filename, hash, self.url, str(e))
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except urllib2.URLError as e:
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# This usually indicates a connection problem, so don't
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# keep trying with the other files... they will probably
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# all fail too.
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raise error.Abort('%s: %s' %
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(util.hidepassword(self.url), e.reason))
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except IOError as e:
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raise basestore.StoreError(filename, hash, self.url, str(e))
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return lfutil.copyandhash(chunks, tmpfile)
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def _verifyfile(self, cctx, cset, contents, standin, verified):
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filename = lfutil.splitstandin(standin)
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if not filename:
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return False
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fctx = cctx[standin]
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key = (filename, fctx.filenode())
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if key in verified:
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return False
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verified.add(key)
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expecthash = fctx.data()[0:40]
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stat = self._stat([expecthash])[expecthash]
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if not stat:
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return False
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elif stat == 1:
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self.ui.warn(
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_('changeset %s: %s: contents differ\n')
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% (cset, filename))
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return True # failed
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elif stat == 2:
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self.ui.warn(
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_('changeset %s: %s missing\n')
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% (cset, filename))
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return True # failed
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else:
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raise RuntimeError('verify failed: unexpected response from '
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'statlfile (%r)' % stat)
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def batch(self):
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'''Support for remote batching.'''
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return wireproto.remotebatch(self)
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def _put(self, hash, fd):
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'''Put file with the given hash in the remote store.'''
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raise NotImplementedError('abstract method')
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def _get(self, hash):
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'''Get file with the given hash from the remote store.'''
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raise NotImplementedError('abstract method')
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def _stat(self, hashes):
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'''Get information about availability of files specified by
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hashes in the remote store. Return dictionary mapping hashes
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to return code where 0 means that file is available, other
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values if not.'''
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raise NotImplementedError('abstract method')
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