peer: introduce real peer classes
This change separates peer implementations from the repository implementation.
localpeer currently is a simple pass-through to localrepository, except for
legacy calls, which have already been removed from localpeer. This ensures that
the local client code only uses the most modern peer API when talking to local
repos.
Peers have a .local() method which returns either None or the underlying
localrepository (or descendant thereof). Repos have a .peer() method to return
a freshly constructed localpeer. The latter is used by hg.peer(), and also to
allow folks to pass either a peer or a repo to some generic helper methods.
We might want to get rid of .peer() eventually.
The only user of locallegacypeer is debugdiscovery, which uses it to pose as a
pre-setdiscovery client. But we decided to leave the old API defined in
locallegacypeer for clarity and maybe for other uses in the future.
It might be nice to actually define the peer API directly in peer.py as stub
methods. One problem there is, however, that localpeer implements
lock/addchangegroup, whereas the true remote peers implement unbundle.
It might be desireable to get rid of this distinction eventually.
# Copyright 2009-2010 Gregory P. Ward
# Copyright 2009-2010 Intelerad Medical Systems Incorporated
# 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.
'''setup for largefiles extension: uisetup'''
from mercurial import archival, cmdutil, commands, extensions, filemerge, hg, \
httppeer, localrepo, merge, sshpeer, sshserver, wireproto
from mercurial.i18n import _
from mercurial.hgweb import hgweb_mod, protocol, webcommands
from mercurial.subrepo import hgsubrepo
import overrides
import proto
def uisetup(ui):
# Disable auto-status for some commands which assume that all
# files in the result are under Mercurial's control
entry = extensions.wrapcommand(commands.table, 'add',
overrides.overrideadd)
addopt = [('', 'large', None, _('add as largefile')),
('', 'normal', None, _('add as normal file')),
('', 'lfsize', '', _('add all files above this size '
'(in megabytes) as largefiles '
'(default: 10)'))]
entry[1].extend(addopt)
entry = extensions.wrapcommand(commands.table, 'addremove',
overrides.overrideaddremove)
entry = extensions.wrapcommand(commands.table, 'remove',
overrides.overrideremove)
entry = extensions.wrapcommand(commands.table, 'forget',
overrides.overrideforget)
# Subrepos call status function
entry = extensions.wrapcommand(commands.table, 'status',
overrides.overridestatus)
entry = extensions.wrapfunction(hgsubrepo, 'status',
overrides.overridestatusfn)
entry = extensions.wrapcommand(commands.table, 'log',
overrides.overridelog)
entry = extensions.wrapcommand(commands.table, 'rollback',
overrides.overriderollback)
entry = extensions.wrapcommand(commands.table, 'verify',
overrides.overrideverify)
verifyopt = [('', 'large', None, _('verify largefiles')),
('', 'lfa', None,
_('verify all revisions of largefiles not just current')),
('', 'lfc', None,
_('verify largefile contents not just existence'))]
entry[1].extend(verifyopt)
entry = extensions.wrapcommand(commands.table, 'outgoing',
overrides.overrideoutgoing)
outgoingopt = [('', 'large', None, _('display outgoing largefiles'))]
entry[1].extend(outgoingopt)
entry = extensions.wrapcommand(commands.table, 'summary',
overrides.overridesummary)
summaryopt = [('', 'large', None, _('display outgoing largefiles'))]
entry[1].extend(summaryopt)
entry = extensions.wrapcommand(commands.table, 'update',
overrides.overrideupdate)
entry = extensions.wrapcommand(commands.table, 'pull',
overrides.overridepull)
pullopt = [('', 'all-largefiles', None,
_('download all pulled versions of largefiles'))]
entry[1].extend(pullopt)
entry = extensions.wrapcommand(commands.table, 'clone',
overrides.overrideclone)
cloneopt = [('', 'all-largefiles', None,
_('download all versions of all largefiles'))]
entry[1].extend(cloneopt)
entry = extensions.wrapcommand(commands.table, 'cat',
overrides.overridecat)
entry = extensions.wrapfunction(merge, '_checkunknownfile',
overrides.overridecheckunknownfile)
entry = extensions.wrapfunction(merge, 'manifestmerge',
overrides.overridemanifestmerge)
entry = extensions.wrapfunction(filemerge, 'filemerge',
overrides.overridefilemerge)
entry = extensions.wrapfunction(cmdutil, 'copy',
overrides.overridecopy)
# Summary calls dirty on the subrepos
entry = extensions.wrapfunction(hgsubrepo, 'dirty',
overrides.overridedirty)
# Backout calls revert so we need to override both the command and the
# function
entry = extensions.wrapcommand(commands.table, 'revert',
overrides.overriderevert)
entry = extensions.wrapfunction(commands, 'revert',
overrides.overriderevert)
# clone uses hg._update instead of hg.update even though they are the
# same function... so wrap both of them)
extensions.wrapfunction(hg, 'update', overrides.hgupdate)
extensions.wrapfunction(hg, '_update', overrides.hgupdate)
extensions.wrapfunction(hg, 'clean', overrides.hgclean)
extensions.wrapfunction(hg, 'merge', overrides.hgmerge)
extensions.wrapfunction(archival, 'archive', overrides.overridearchive)
extensions.wrapfunction(hgsubrepo, 'archive', overrides.hgsubrepoarchive)
extensions.wrapfunction(cmdutil, 'bailifchanged',
overrides.overridebailifchanged)
# create the new wireproto commands ...
wireproto.commands['putlfile'] = (proto.putlfile, 'sha')
wireproto.commands['getlfile'] = (proto.getlfile, 'sha')
wireproto.commands['statlfile'] = (proto.statlfile, 'sha')
# ... and wrap some existing ones
wireproto.commands['capabilities'] = (proto.capabilities, '')
wireproto.commands['heads'] = (proto.heads, '')
wireproto.commands['lheads'] = (wireproto.heads, '')
# make putlfile behave the same as push and {get,stat}lfile behave
# the same as pull w.r.t. permissions checks
hgweb_mod.perms['putlfile'] = 'push'
hgweb_mod.perms['getlfile'] = 'pull'
hgweb_mod.perms['statlfile'] = 'pull'
extensions.wrapfunction(webcommands, 'decodepath', overrides.decodepath)
# the hello wireproto command uses wireproto.capabilities, so it won't see
# our largefiles capability unless we replace the actual function as well.
proto.capabilitiesorig = wireproto.capabilities
wireproto.capabilities = proto.capabilities
# these let us reject non-largefiles clients and make them display
# our error messages
protocol.webproto.refuseclient = proto.webprotorefuseclient
sshserver.sshserver.refuseclient = proto.sshprotorefuseclient
# can't do this in reposetup because it needs to have happened before
# wirerepo.__init__ is called
proto.ssholdcallstream = sshpeer.sshpeer._callstream
proto.httpoldcallstream = httppeer.httppeer._callstream
sshpeer.sshpeer._callstream = proto.sshrepocallstream
httppeer.httppeer._callstream = proto.httprepocallstream
# don't die on seeing a repo with the largefiles requirement
localrepo.localrepository.supported |= set(['largefiles'])
# override some extensions' stuff as well
for name, module in extensions.extensions():
if name == 'fetch':
extensions.wrapcommand(getattr(module, 'cmdtable'), 'fetch',
overrides.overridefetch)
if name == 'purge':
extensions.wrapcommand(getattr(module, 'cmdtable'), 'purge',
overrides.overridepurge)
if name == 'rebase':
extensions.wrapcommand(getattr(module, 'cmdtable'), 'rebase',
overrides.overriderebase)
if name == 'transplant':
extensions.wrapcommand(getattr(module, 'cmdtable'), 'transplant',
overrides.overridetransplant)