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  • Committer: Canonical.com Patch Queue Manager
  • Date: 2009-03-17 07:05:37 UTC
  • mfrom: (4152.1.2 branch.stacked.streams)
  • Revision ID: pqm@pqm.ubuntu.com-20090317070537-zaud24vjs2szna87
(robertc) Add client-side streaming from stacked branches (over
        bzr:// protocols) when the sort order is compatible with doing
        that. (Robert Collins, Andrew Bennetts)

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bzrlib/smart/branch.py
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# Copyright (C) 2006-2010 Canonical Ltd
 
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# Copyright (C) 2006 Canonical Ltd
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#
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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#
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the Free Software
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# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
 
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# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
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"""Server-side branch related request implmentations."""
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from bzrlib import (
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    bencode,
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    errors,
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    )
 
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from bzrlib import errors
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from bzrlib.bzrdir import BzrDir
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from bzrlib.smart.request import (
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    FailedSmartServerResponse,
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        bzrdir = BzrDir.open_from_transport(transport)
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        if bzrdir.get_branch_reference() is not None:
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            raise errors.NotBranchError(transport.base)
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        branch = bzrdir.open_branch(ignore_fallbacks=True)
 
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        branch = bzrdir.open_branch()
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        return self.do_with_branch(branch, *args)
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        The body is not utf8 decoded - its the literal bytestream from disk.
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        """
 
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        # This was at one time called by RemoteBranchLockableFiles
 
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        # intercepting access to this file; as of 1.5 it is not called by the
 
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        # client but retained for compatibility.  It may be called again to
 
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        # allow the client to get the configuration without needing vfs
 
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        # access.
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        try:
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            content = branch._transport.get_bytes('branch.conf')
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        except errors.NoSuchFile:
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        return SuccessfulSmartServerResponse((bytes,))
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class SmartServerBranchSetTagsBytes(SmartServerLockedBranchRequest):
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    def __init__(self, backing_transport, root_client_path='/', jail_root=None):
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        SmartServerLockedBranchRequest.__init__(
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            self, backing_transport, root_client_path, jail_root)
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        self.locked = False
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    def do_with_locked_branch(self, branch):
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        """Call _set_tags_bytes for a branch.
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        New in 1.18.
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        """
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        # We need to keep this branch locked until we get a body with the tags
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        # bytes.
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        self.branch = branch
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        self.branch.lock_write()
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        self.locked = True
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    def do_body(self, bytes):
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        self.branch._set_tags_bytes(bytes)
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        return SuccessfulSmartServerResponse(())
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    def do_end(self):
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        # TODO: this request shouldn't have to do this housekeeping manually.
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        # Some of this logic probably belongs in a base class.
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        if not self.locked:
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            # We never acquired the branch successfully in the first place, so
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            # there's nothing more to do.
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            return
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        try:
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            return SmartServerLockedBranchRequest.do_end(self)
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        finally:
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            # Only try unlocking if we locked successfully in the first place
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            self.branch.unlock()
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class SmartServerBranchRequestGetStackedOnURL(SmartServerBranchRequest):
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    def do_with_branch(self, branch):
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            return FailedSmartServerResponse(('TipChangeRejected', msg))
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class SmartServerBranchRequestSetConfigOption(SmartServerLockedBranchRequest):
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    """Set an option in the branch configuration."""
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    def do_with_locked_branch(self, branch, value, name, section):
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        if not section:
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            section = None
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        branch._get_config().set_option(value.decode('utf8'), name, section)
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        return SuccessfulSmartServerResponse(())
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class SmartServerBranchRequestSetConfigOptionDict(SmartServerLockedBranchRequest):
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    """Set an option in the branch configuration.
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    New in 2.2.
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    """
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    def do_with_locked_branch(self, branch, value_dict, name, section):
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        utf8_dict = bencode.bdecode(value_dict)
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        value_dict = {}
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        for key, value in utf8_dict.items():
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            value_dict[key.decode('utf8')] = value.decode('utf8')
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        if not section:
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            section = None
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        branch._get_config().set_option(value_dict, name, section)
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        return SuccessfulSmartServerResponse(())
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class SmartServerBranchRequestSetLastRevision(SmartServerSetTipRequest):
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    def do_tip_change_with_locked_branch(self, branch, new_last_revision_id):
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        return SuccessfulSmartServerResponse(('ok',))
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class SmartServerBranchRequestSetParentLocation(SmartServerLockedBranchRequest):
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    """Set the parent location for a branch.
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    Takes a location to set, which must be utf8 encoded.
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    """
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    def do_with_locked_branch(self, branch, location):
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        branch._set_parent_location(location)
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        return SuccessfulSmartServerResponse(())
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class SmartServerBranchRequestLockWrite(SmartServerBranchRequest):
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    def do_with_branch(self, branch, branch_token='', repo_token=''):
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        if repo_token == '':
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            repo_token = None
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        try:
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            repo_token = branch.repository.lock_write(
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                token=repo_token).repository_token
 
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            repo_token = branch.repository.lock_write(token=repo_token)
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            try:
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                branch_token = branch.lock_write(
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                    token=branch_token).branch_token
 
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                branch_token = branch.lock_write(token=branch_token)
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            finally:
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                # this leaves the repository with 1 lock
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                branch.repository.unlock()