Mercurial > hg
view hgext/largefiles/remotestore.py @ 44413:4cabeea6d214
hgext: start building a library for simple hooks
Many workflows depend on hooks to enforce certain policies, e.g. to
prevent forced pushes. The Mercurial Guide includes some cases and
Google can help finding others, but it can save users a lot of time
if hg itself has a couple of examples for further customization.
Differential Revision: https://phab.mercurial-scm.org/D6825
author | Joerg Sonnenberger <joerg@bec.de> |
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date | Sat, 07 Sep 2019 14:50:39 +0200 |
parents | 649d3ac37a12 |
children | 9d2b2df2c2ba |
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# 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, pycompat, 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( _(b'remotestore: could not put %s to remote store %s') % (source, util.hidepassword(self.url)) ) self.ui.debug( _(b'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 pycompat.iteritems( self._stat(hashes) ) # dict-from-generator ) def sendfile(self, filename, hash): self.ui.debug(b'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( _(b'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( b'%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( _(b'changeset %s: %s: contents differ\n') % (cset, filename) ) failed = True elif stat == 2: self.ui.warn( _(b'changeset %s: %s missing\n') % (cset, filename) ) failed = True else: raise RuntimeError( b'verify failed: unexpected response ' b'from statlfile (%r)' % stat ) return failed def _put(self, hash, fd): '''Put file with the given hash in the remote store.''' raise NotImplementedError(b'abstract method') def _get(self, hash): '''Get a iterator for content with the given hash.''' raise NotImplementedError(b'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(b'abstract method')