Mercurial > hg
view hgext/largefiles/proto.py @ 23274:0ec2e124fcc0
largefiles: update standins only at the 1st commit of "transplant --continue"
Before this patch, "hg transplant --continue" may record incorrect
standins, because largefiles extension always avoid updating standins
while transplanting, even though largefiles in the working directory
may be modified manually at the 1st commit of "hg transplant --continue".
But, on the other hand, updating standins should be avoided at
subsequent commits for efficiency reason.
To update standins only at the 1st commit of "hg transplant
--continue", this patch uses "automatedcommithook", which updates
standins by "lfutil.updatestandinsbymatch()" only at the 1st commit of
resuming.
Even after this patch, "repo._istransplanting = True" is still needed
to avoid some status report while updating largefiles in
"lfcommands.updatelfiles()".
This is reason why this patch omits not "repo._istransplanting = True"
in "overriderebase" but examination of "getattr(repo,
"_istransplanting", False)" in "updatestandinsbymatch".
author | FUJIWARA Katsunori <foozy@lares.dti.ne.jp> |
---|---|
date | Sat, 08 Nov 2014 00:48:41 +0900 |
parents | 70252bdfd39c |
children | bee00e0c2e45 |
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# Copyright 2011 Fog Creek Software # # This software may be used and distributed according to the terms of the # GNU General Public License version 2 or any later version. import os import urllib2 import re from mercurial import error, httppeer, util, wireproto from mercurial.i18n import _ import lfutil LARGEFILES_REQUIRED_MSG = ('\nThis repository uses the largefiles extension.' '\n\nPlease enable it in your Mercurial config ' 'file.\n') # these will all be replaced by largefiles.uisetup capabilitiesorig = None ssholdcallstream = None httpoldcallstream = None def putlfile(repo, proto, sha): '''Put a largefile into a repository's local store and into the user cache.''' proto.redirect() path = lfutil.storepath(repo, sha) util.makedirs(os.path.dirname(path)) tmpfp = util.atomictempfile(path, createmode=repo.store.createmode) try: try: proto.getfile(tmpfp) tmpfp._fp.seek(0) if sha != lfutil.hexsha1(tmpfp._fp): raise IOError(0, _('largefile contents do not match hash')) tmpfp.close() lfutil.linktousercache(repo, sha) except IOError, e: repo.ui.warn(_('largefiles: failed to put %s into store: %s\n') % (sha, e.strerror)) return wireproto.pushres(1) finally: tmpfp.discard() return wireproto.pushres(0) def getlfile(repo, proto, sha): '''Retrieve a largefile from the repository-local cache or system cache.''' filename = lfutil.findfile(repo, sha) if not filename: raise util.Abort(_('requested largefile %s not present in cache') % sha) f = open(filename, 'rb') length = os.fstat(f.fileno())[6] # Since we can't set an HTTP content-length header here, and # Mercurial core provides no way to give the length of a streamres # (and reading the entire file into RAM would be ill-advised), we # just send the length on the first line of the response, like the # ssh proto does for string responses. def generator(): yield '%d\n' % length for chunk in util.filechunkiter(f): yield chunk return wireproto.streamres(generator()) def statlfile(repo, proto, sha): '''Return '2\n' if the largefile is missing, '0\n' if it seems to be in good condition. The value 1 is reserved for mismatched checksum, but that is too expensive to be verified on every stat and must be caught be running 'hg verify' server side.''' filename = lfutil.findfile(repo, sha) if not filename: return '2\n' return '0\n' def wirereposetup(ui, repo): class lfileswirerepository(repo.__class__): def putlfile(self, sha, fd): # unfortunately, httprepository._callpush tries to convert its # input file-like into a bundle before sending it, so we can't use # it ... if issubclass(self.__class__, httppeer.httppeer): res = None try: res = self._call('putlfile', data=fd, sha=sha, headers={'content-type':'application/mercurial-0.1'}) d, output = res.split('\n', 1) for l in output.splitlines(True): self.ui.warn(_('remote: '), l) # assume l ends with \n return int(d) except (ValueError, urllib2.HTTPError): self.ui.warn(_('unexpected putlfile response: %r\n') % res) return 1 # ... but we can't use sshrepository._call because the data= # argument won't get sent, and _callpush does exactly what we want # in this case: send the data straight through else: try: ret, output = self._callpush("putlfile", fd, sha=sha) if ret == "": raise error.ResponseError(_('putlfile failed:'), output) return int(ret) except IOError: return 1 except ValueError: raise error.ResponseError( _('putlfile failed (unexpected response):'), ret) def getlfile(self, sha): """returns an iterable with the chunks of the file with sha sha""" stream = self._callstream("getlfile", sha=sha) length = stream.readline() try: length = int(length) except ValueError: self._abort(error.ResponseError(_("unexpected response:"), length)) # SSH streams will block if reading more than length for chunk in util.filechunkiter(stream, 128 * 1024, length): yield chunk # HTTP streams must hit the end to process the last empty # chunk of Chunked-Encoding so the connection can be reused. if issubclass(self.__class__, httppeer.httppeer): chunk = stream.read(1) if chunk: self._abort(error.ResponseError(_("unexpected response:"), chunk)) @wireproto.batchable def statlfile(self, sha): f = wireproto.future() result = {'sha': sha} yield result, f try: yield int(f.value) except (ValueError, urllib2.HTTPError): # If the server returns anything but an integer followed by a # newline, newline, it's not speaking our language; if we get # an HTTP error, we can't be sure the largefile is present; # either way, consider it missing. yield 2 repo.__class__ = lfileswirerepository # advertise the largefiles=serve capability def capabilities(repo, proto): return capabilitiesorig(repo, proto) + ' largefiles=serve' def heads(repo, proto): if lfutil.islfilesrepo(repo): return wireproto.ooberror(LARGEFILES_REQUIRED_MSG) return wireproto.heads(repo, proto) def sshrepocallstream(self, cmd, **args): if cmd == 'heads' and self.capable('largefiles'): cmd = 'lheads' if cmd == 'batch' and self.capable('largefiles'): args['cmds'] = args['cmds'].replace('heads ', 'lheads ') return ssholdcallstream(self, cmd, **args) headsre = re.compile(r'(^|;)heads\b') def httprepocallstream(self, cmd, **args): if cmd == 'heads' and self.capable('largefiles'): cmd = 'lheads' if cmd == 'batch' and self.capable('largefiles'): args['cmds'] = headsre.sub('lheads', args['cmds']) return httpoldcallstream(self, cmd, **args)