Mercurial > hg
view hgext/largefiles/remotestore.py @ 48598:a6f16ec07ed7
stream-clone: add a explicit test for format change during stream clone
They are different kind of requirements, the one which impact the data storage
and are relevant to the files being streamed and the one which does not. For
example some requirements are only relevant to the working copy, like sparse, or
dirstate-v2.
Since they are irrelevant to the content being streamed, they do not prevent the
receiving side to use streaming clone and mercurial skip adverting them over
the wire and, ideally, within the bundle.
In addition, this let the client decide to use whichever format it desire for
the part that does not affect the store itself. So the configuration related to
these format are used as normal when doing a streaming clone.
In practice, the feature was not really tested and is badly broken with bundle-2,
since the requirements are not filtered out from the stream bundle.
So we start with adding simple tests as a good base before the fix and adjust
the feature.
Differential Revision: https://phab.mercurial-scm.org/D12029
author | Pierre-Yves David <pierre-yves.david@octobus.net> |
---|---|
date | Mon, 17 Jan 2022 18:51:47 +0100 |
parents | ffd3e823a7e5 |
children | 6000f5b25c9b |
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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, urlutil, ) 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, urlutil.hidepassword(self.url)) ) self.ui.debug( _(b'remotestore: put %s to remote store %s\n') % (source, urlutil.hidepassword(self.url)) ) def exists(self, hashes): return { 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' % (urlutil.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')