mercurial/statichttprepo.py
author Augie Fackler <augie@google.com>
Sun, 17 May 2015 21:12:33 -0400
changeset 25157 a8d22895a575
parent 24377 656f93ce66d5
child 25196 7a1af58ab242
permissions -rw-r--r--
run-tests: introduce PYTHON3 boolean constant (issue4668) This will avoid open-coding lots of version_info checks later in the file.
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# statichttprepo.py - simple http repository class for mercurial
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#
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# This provides read-only repo access to repositories exported via static http
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#
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# Copyright 2005-2007 Matt Mackall <mpm@selenic.com>
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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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from i18n import _
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import changelog, byterange, url, error, namespaces
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import localrepo, manifest, util, scmutil, store
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import urllib, urllib2, errno, os
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class httprangereader(object):
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    def __init__(self, url, opener):
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        # we assume opener has HTTPRangeHandler
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        self.url = url
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        self.pos = 0
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        self.opener = opener
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        self.name = url
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    def seek(self, pos):
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        self.pos = pos
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    def read(self, bytes=None):
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        req = urllib2.Request(self.url)
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        end = ''
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        if bytes:
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            end = self.pos + bytes - 1
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        if self.pos or end:
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            req.add_header('Range', 'bytes=%d-%s' % (self.pos, end))
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        try:
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            f = self.opener.open(req)
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            data = f.read()
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            # Python 2.6+ defines a getcode() function, and 2.4 and
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            # 2.5 appear to always have an undocumented code attribute
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            # set. If we can't read either of those, fall back to 206
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            # and hope for the best.
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            code = getattr(f, 'getcode', lambda : getattr(f, 'code', 206))()
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        except urllib2.HTTPError, inst:
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            num = inst.code == 404 and errno.ENOENT or None
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            raise IOError(num, inst)
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        except urllib2.URLError, inst:
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            raise IOError(None, inst.reason[1])
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        if code == 200:
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            # HTTPRangeHandler does nothing if remote does not support
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            # Range headers and returns the full entity. Let's slice it.
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            if bytes:
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                data = data[self.pos:self.pos + bytes]
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            else:
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                data = data[self.pos:]
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        elif bytes:
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            data = data[:bytes]
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        self.pos += len(data)
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        return data
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    def readlines(self):
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        return self.read().splitlines(True)
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    def __iter__(self):
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        return iter(self.readlines())
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    def close(self):
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        pass
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def build_opener(ui, authinfo):
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    # urllib cannot handle URLs with embedded user or passwd
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    urlopener = url.opener(ui, authinfo)
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    urlopener.add_handler(byterange.HTTPRangeHandler())
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    class statichttpvfs(scmutil.abstractvfs):
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        def __init__(self, base):
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            self.base = base
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        def __call__(self, path, mode='r', *args, **kw):
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            if mode not in ('r', 'rb'):
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                raise IOError('Permission denied')
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            f = "/".join((self.base, urllib.quote(path)))
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            return httprangereader(f, urlopener)
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        def join(self, path):
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            if path:
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                return os.path.join(self.base, path)
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            else:
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                return self.base
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    return statichttpvfs
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class statichttppeer(localrepo.localpeer):
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    def local(self):
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        return None
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    def canpush(self):
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        return False
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class statichttprepository(localrepo.localrepository):
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    supported = localrepo.localrepository._basesupported
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    def __init__(self, ui, path):
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        self._url = path
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        self.ui = ui
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        self.root = path
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        u = util.url(path.rstrip('/') + "/.hg")
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        self.path, authinfo = u.authinfo()
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        opener = build_opener(ui, authinfo)
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        self.opener = opener(self.path)
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        self.vfs = self.opener
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        self._phasedefaults = []
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        self.names = namespaces.namespaces()
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        try:
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            requirements = scmutil.readrequires(self.vfs, self.supported)
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        except IOError, inst:
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            if inst.errno != errno.ENOENT:
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                raise
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   116
            requirements = set()
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   117
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            # check if it is a non-empty old-style repository
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   119
            try:
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   120
                fp = self.vfs("00changelog.i")
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Dan Villiom Podlaski Christiansen <danchr@gmail.com>
parents: 13253
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                fp.read(1)
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                fp.close()
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parents: 6312
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   123
            except IOError, inst:
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   124
                if inst.errno != errno.ENOENT:
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   125
                    raise
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   126
                # we do not care about empty old-style repositories here
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Dirkjan Ochtman <dirkjan@ochtman.nl>
parents: 5321
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   127
                msg = _("'%s' does not appear to be an hg repository") % path
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parents: 7274
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   128
                raise error.RepoError(msg)
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Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents: 3794
diff changeset
   129
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   130
        # setup store
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parents: 13400
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   131
        self.store = store.store(requirements, self.path, opener)
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parents: 6840
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        self.spath = self.store.path
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parents: 23877
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   133
        self.svfs = self.store.opener
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   134
        self.sopener = self.svfs
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parents: 6840
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   135
        self.sjoin = self.store.join
16115
236bb604dc39 scmutil: update cached copy when filecached attribute is assigned (issue3263)
Idan Kamara <idankk86@gmail.com>
parents: 15922
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   136
        self._filecache = {}
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Peter Arrenbrecht <peter.arrenbrecht@gmail.com>
parents: 17156
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   137
        self.requirements = requirements
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Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents: 3794
diff changeset
   138
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parents: 23877
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   139
        self.manifest = manifest.manifest(self.svfs)
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parents: 23877
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   140
        self.changelog = changelog.changelog(self.svfs)
9146
5614a628d173 localrepo: rename in-memory tag cache instance attributes (issue548).
Greg Ward <greg-hg@gerg.ca>
parents: 8612
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   141
        self._tags = None
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   142
        self.nodetagscache = None
18189
b9026ba002f6 branchmap: enable caching for filtered version too
Pierre-Yves David <pierre-yves.david@ens-lyon.org>
parents: 18125
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   143
        self._branchcaches = {}
24373
59cc09240afb revbranchcache: move out of branchmap onto localrepo
Durham Goode <durham@fb.com>
parents: 23878
diff changeset
   144
        self._revbranchcache = None
1598
14d1f1868bf6 cleanup of revlog.group when repository is local
Benoit Boissinot <benoit.boissinot@ens-lyon.org>
parents: 1325
diff changeset
   145
        self.encodepats = None
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parents: 1325
diff changeset
   146
        self.decodepats = None
24377
656f93ce66d5 revbranchcache: move cache writing to the transaction finalizer
Durham Goode <durham@fb.com>
parents: 24373
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   147
        self._transref = None
17192
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Peter Arrenbrecht <peter.arrenbrecht@gmail.com>
parents: 17156
diff changeset
   148
1ac628cd7113 peer: introduce real peer classes
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parents: 17156
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   149
    def _restrictcapabilities(self, caps):
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parents: 20055
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   150
        caps = super(statichttprepository, self)._restrictcapabilities(caps)
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parents: 17156
diff changeset
   151
        return caps.difference(["pushkey"])
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mpm@selenic.com
parents:
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   152
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109a22f5434a hooks: add url to changegroup, incoming, prechangegroup, pretxnchangegroup hooks
Vadim Gelfer <vadim.gelfer@gmail.com>
parents: 2072
diff changeset
   153
    def url(self):
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parents: 7179
diff changeset
   154
        return self._url
2673
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parents: 2072
diff changeset
   155
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2cf5c8a4eae5 Separate out old-http support
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parents:
diff changeset
   156
    def local(self):
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parents:
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   157
        return False
2740
386f04d6ecb3 clean up hg.py: move repo constructor code into each repo module
Vadim Gelfer <vadim.gelfer@gmail.com>
parents: 2673
diff changeset
   158
17192
1ac628cd7113 peer: introduce real peer classes
Peter Arrenbrecht <peter.arrenbrecht@gmail.com>
parents: 17156
diff changeset
   159
    def peer(self):
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parents: 17156
diff changeset
   160
        return statichttppeer(self)
1ac628cd7113 peer: introduce real peer classes
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parents: 17156
diff changeset
   161
7005
7739b61897df do not pretend to lock static-http repositories (issue994)
Martin Geisler <mg@daimi.au.dk>
parents: 6988
diff changeset
   162
    def lock(self, wait=True):
7739b61897df do not pretend to lock static-http repositories (issue994)
Martin Geisler <mg@daimi.au.dk>
parents: 6988
diff changeset
   163
        raise util.Abort(_('cannot lock static-http repository'))
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Martin Geisler <mg@daimi.au.dk>
parents: 6988
diff changeset
   164
2740
386f04d6ecb3 clean up hg.py: move repo constructor code into each repo module
Vadim Gelfer <vadim.gelfer@gmail.com>
parents: 2673
diff changeset
   165
def instance(ui, path, create):
386f04d6ecb3 clean up hg.py: move repo constructor code into each repo module
Vadim Gelfer <vadim.gelfer@gmail.com>
parents: 2673
diff changeset
   166
    if create:
386f04d6ecb3 clean up hg.py: move repo constructor code into each repo module
Vadim Gelfer <vadim.gelfer@gmail.com>
parents: 2673
diff changeset
   167
        raise util.Abort(_('cannot create new static-http repository'))
4853
bf10a03a6b24 Removed deprecated hg:// and old-http:// protocols (issue406)
Thomas Arendsen Hein <thomas@intevation.de>
parents: 4635
diff changeset
   168
    return statichttprepository(ui, path[7:])