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# Copyright (C) 2006, 2007, 2008 Canonical Ltd
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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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# the Free Software Foundation; either version 2 of the License, or
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# (at your option) any later version.
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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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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# TODO: At some point, handle upgrades by just passing the whole request
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# across to run on the server.
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revision as _mod_revision,
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from bzrlib.branch import BranchReferenceFormat
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from bzrlib.bzrdir import BzrDir, RemoteBzrDirFormat
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from bzrlib.decorators import needs_read_lock, needs_write_lock
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from bzrlib.errors import (
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from bzrlib.lockable_files import LockableFiles
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from bzrlib.smart import client, vfs, repository as smart_repo
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from bzrlib.revision import ensure_null, NULL_REVISION
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from bzrlib.trace import mutter, note, warning
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class _RpcHelper(object):
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"""Mixin class that helps with issuing RPCs."""
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def _call(self, method, *args, **err_context):
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return self._client.call(method, *args)
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except errors.ErrorFromSmartServer, err:
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self._translate_error(err, **err_context)
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def _call_expecting_body(self, method, *args, **err_context):
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return self._client.call_expecting_body(method, *args)
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except errors.ErrorFromSmartServer, err:
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self._translate_error(err, **err_context)
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def _call_with_body_bytes_expecting_body(self, method, args, body_bytes,
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return self._client.call_with_body_bytes_expecting_body(
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method, args, body_bytes)
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except errors.ErrorFromSmartServer, err:
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self._translate_error(err, **err_context)
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def response_tuple_to_repo_format(response):
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"""Convert a response tuple describing a repository format to a format."""
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format = RemoteRepositoryFormat()
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format._rich_root_data = (response[0] == 'yes')
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format._supports_tree_reference = (response[1] == 'yes')
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format._supports_external_lookups = (response[2] == 'yes')
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format._network_name = response[3]
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# Note: RemoteBzrDirFormat is in bzrdir.py
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class RemoteBzrDir(BzrDir, _RpcHelper):
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"""Control directory on a remote server, accessed via bzr:// or similar."""
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def __init__(self, transport, format, _client=None):
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"""Construct a RemoteBzrDir.
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:param _client: Private parameter for testing. Disables probing and the
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BzrDir.__init__(self, transport, format)
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# this object holds a delegated bzrdir that uses file-level operations
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# to talk to the other side
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self._real_bzrdir = None
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# 1-shot cache for the call pattern 'create_branch; open_branch' - see
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# create_branch for details.
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self._next_open_branch_result = None
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medium = transport.get_smart_medium()
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self._client = client._SmartClient(medium)
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self._client = _client
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path = self._path_for_remote_call(self._client)
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response = self._call('BzrDir.open', path)
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if response not in [('yes',), ('no',)]:
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raise errors.UnexpectedSmartServerResponse(response)
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if response == ('no',):
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raise errors.NotBranchError(path=transport.base)
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def _ensure_real(self):
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"""Ensure that there is a _real_bzrdir set.
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Used before calls to self._real_bzrdir.
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if not self._real_bzrdir:
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self._real_bzrdir = BzrDir.open_from_transport(
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self.root_transport, _server_formats=False)
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self._format._network_name = \
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self._real_bzrdir._format.network_name()
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def _translate_error(self, err, **context):
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_translate_error(err, bzrdir=self, **context)
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def break_lock(self):
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# Prevent aliasing problems in the next_open_branch_result cache.
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# See create_branch for rationale.
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self._next_open_branch_result = None
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return BzrDir.break_lock(self)
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def _vfs_cloning_metadir(self, require_stacking=False):
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return self._real_bzrdir.cloning_metadir(
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require_stacking=require_stacking)
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def cloning_metadir(self, require_stacking=False):
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medium = self._client._medium
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if medium._is_remote_before((1, 13)):
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return self._vfs_cloning_metadir(require_stacking=require_stacking)
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verb = 'BzrDir.cloning_metadir'
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path = self._path_for_remote_call(self._client)
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response = self._call(verb, path, stacking)
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except errors.UnknownSmartMethod:
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medium._remember_remote_is_before((1, 13))
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return self._vfs_cloning_metadir(require_stacking=require_stacking)
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except errors.UnknownErrorFromSmartServer, err:
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if err.error_tuple != ('BranchReference',):
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# We need to resolve the branch reference to determine the
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# cloning_metadir. This causes unnecessary RPCs to open the
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# referenced branch (and bzrdir, etc) but only when the caller
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# didn't already resolve the branch reference.
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referenced_branch = self.open_branch()
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return referenced_branch.bzrdir.cloning_metadir()
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if len(response) != 3:
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raise errors.UnexpectedSmartServerResponse(response)
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control_name, repo_name, branch_info = response
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if len(branch_info) != 2:
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raise errors.UnexpectedSmartServerResponse(response)
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branch_ref, branch_name = branch_info
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format = bzrdir.network_format_registry.get(control_name)
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format.repository_format = repository.network_format_registry.get(
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if branch_ref == 'ref':
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# XXX: we need possible_transports here to avoid reopening the
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# connection to the referenced location
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ref_bzrdir = BzrDir.open(branch_name)
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branch_format = ref_bzrdir.cloning_metadir().get_branch_format()
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format.set_branch_format(branch_format)
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elif branch_ref == 'branch':
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format.set_branch_format(
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branch.network_format_registry.get(branch_name))
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raise errors.UnexpectedSmartServerResponse(response)
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def create_repository(self, shared=False):
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# as per meta1 formats - just delegate to the format object which may
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result = self._format.repository_format.initialize(self, shared)
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if not isinstance(result, RemoteRepository):
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return self.open_repository()
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def destroy_repository(self):
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"""See BzrDir.destroy_repository"""
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self._real_bzrdir.destroy_repository()
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def create_branch(self):
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# as per meta1 formats - just delegate to the format object which may
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real_branch = self._format.get_branch_format().initialize(self)
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if not isinstance(real_branch, RemoteBranch):
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result = RemoteBranch(self, self.find_repository(), real_branch)
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# BzrDir.clone_on_transport() uses the result of create_branch but does
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# not return it to its callers; we save approximately 8% of our round
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# trips by handing the branch we created back to the first caller to
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# open_branch rather than probing anew. Long term we need a API in
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# bzrdir that doesn't discard result objects (like result_branch).
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self._next_open_branch_result = result
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def destroy_branch(self):
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"""See BzrDir.destroy_branch"""
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self._real_bzrdir.destroy_branch()
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self._next_open_branch_result = None
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def create_workingtree(self, revision_id=None, from_branch=None):
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raise errors.NotLocalUrl(self.transport.base)
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def find_branch_format(self):
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"""Find the branch 'format' for this bzrdir.
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This might be a synthetic object for e.g. RemoteBranch and SVN.
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b = self.open_branch()
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def get_branch_reference(self):
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"""See BzrDir.get_branch_reference()."""
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response = self._get_branch_reference()
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if response[0] == 'ref':
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def _get_branch_reference(self):
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path = self._path_for_remote_call(self._client)
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medium = self._client._medium
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if not medium._is_remote_before((1, 13)):
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response = self._call('BzrDir.open_branchV2', path)
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if response[0] not in ('ref', 'branch'):
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raise errors.UnexpectedSmartServerResponse(response)
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except errors.UnknownSmartMethod:
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medium._remember_remote_is_before((1, 13))
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response = self._call('BzrDir.open_branch', path)
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if response[0] != 'ok':
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raise errors.UnexpectedSmartServerResponse(response)
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if response[1] != '':
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return ('ref', response[1])
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return ('branch', '')
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def _get_tree_branch(self):
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"""See BzrDir._get_tree_branch()."""
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return None, self.open_branch()
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def open_branch(self, _unsupported=False, ignore_fallbacks=False):
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raise NotImplementedError('unsupported flag support not implemented yet.')
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if self._next_open_branch_result is not None:
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# See create_branch for details.
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result = self._next_open_branch_result
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self._next_open_branch_result = None
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response = self._get_branch_reference()
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if response[0] == 'ref':
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# a branch reference, use the existing BranchReference logic.
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format = BranchReferenceFormat()
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return format.open(self, _found=True, location=response[1],
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ignore_fallbacks=ignore_fallbacks)
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branch_format_name = response[1]
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if not branch_format_name:
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branch_format_name = None
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format = RemoteBranchFormat(network_name=branch_format_name)
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return RemoteBranch(self, self.find_repository(), format=format,
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setup_stacking=not ignore_fallbacks)
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def _open_repo_v1(self, path):
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verb = 'BzrDir.find_repository'
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response = self._call(verb, path)
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if response[0] != 'ok':
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raise errors.UnexpectedSmartServerResponse(response)
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# servers that only support the v1 method don't support external
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repo = self._real_bzrdir.open_repository()
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response = response + ('no', repo._format.network_name())
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return response, repo
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def _open_repo_v2(self, path):
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verb = 'BzrDir.find_repositoryV2'
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response = self._call(verb, path)
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if response[0] != 'ok':
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raise errors.UnexpectedSmartServerResponse(response)
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repo = self._real_bzrdir.open_repository()
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response = response + (repo._format.network_name(),)
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return response, repo
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def _open_repo_v3(self, path):
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verb = 'BzrDir.find_repositoryV3'
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medium = self._client._medium
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if medium._is_remote_before((1, 13)):
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raise errors.UnknownSmartMethod(verb)
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response = self._call(verb, path)
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except errors.UnknownSmartMethod:
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medium._remember_remote_is_before((1, 13))
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if response[0] != 'ok':
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raise errors.UnexpectedSmartServerResponse(response)
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return response, None
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def open_repository(self):
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path = self._path_for_remote_call(self._client)
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for probe in [self._open_repo_v3, self._open_repo_v2,
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response, real_repo = probe(path)
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except errors.UnknownSmartMethod:
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raise errors.UnknownSmartMethod('BzrDir.find_repository{3,2,}')
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if response[0] != 'ok':
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raise errors.UnexpectedSmartServerResponse(response)
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if len(response) != 6:
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raise SmartProtocolError('incorrect response length %s' % (response,))
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if response[1] == '':
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# repo is at this dir.
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format = response_tuple_to_repo_format(response[2:])
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# Used to support creating a real format instance when needed.
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format._creating_bzrdir = self
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remote_repo = RemoteRepository(self, format)
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format._creating_repo = remote_repo
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if real_repo is not None:
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remote_repo._set_real_repository(real_repo)
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raise errors.NoRepositoryPresent(self)
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def open_workingtree(self, recommend_upgrade=True):
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if self._real_bzrdir.has_workingtree():
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raise errors.NotLocalUrl(self.root_transport)
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raise errors.NoWorkingTree(self.root_transport.base)
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def _path_for_remote_call(self, client):
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"""Return the path to be used for this bzrdir in a remote call."""
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return client.remote_path_from_transport(self.root_transport)
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def get_branch_transport(self, branch_format):
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return self._real_bzrdir.get_branch_transport(branch_format)
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def get_repository_transport(self, repository_format):
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return self._real_bzrdir.get_repository_transport(repository_format)
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def get_workingtree_transport(self, workingtree_format):
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return self._real_bzrdir.get_workingtree_transport(workingtree_format)
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def can_convert_format(self):
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"""Upgrading of remote bzrdirs is not supported yet."""
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def needs_format_conversion(self, format=None):
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"""Upgrading of remote bzrdirs is not supported yet."""
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symbol_versioning.warn(symbol_versioning.deprecated_in((1, 13, 0))
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% 'needs_format_conversion(format=None)')
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def clone(self, url, revision_id=None, force_new_repo=False,
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preserve_stacking=False):
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return self._real_bzrdir.clone(url, revision_id=revision_id,
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force_new_repo=force_new_repo, preserve_stacking=preserve_stacking)
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def _get_config(self):
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return RemoteBzrDirConfig(self)
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class RemoteRepositoryFormat(repository.RepositoryFormat):
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"""Format for repositories accessed over a _SmartClient.
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Instances of this repository are represented by RemoteRepository
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The RemoteRepositoryFormat is parameterized during construction
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to reflect the capabilities of the real, remote format. Specifically
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the attributes rich_root_data and supports_tree_reference are set
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on a per instance basis, and are not set (and should not be) at
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:ivar _custom_format: If set, a specific concrete repository format that
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will be used when initializing a repository with this
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RemoteRepositoryFormat.
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:ivar _creating_repo: If set, the repository object that this
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RemoteRepositoryFormat was created for: it can be called into
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to obtain data like the network name.
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_matchingbzrdir = RemoteBzrDirFormat()
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repository.RepositoryFormat.__init__(self)
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self._custom_format = None
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self._network_name = None
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self._creating_bzrdir = None
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self._supports_external_lookups = None
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self._supports_tree_reference = None
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self._rich_root_data = None
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def fast_deltas(self):
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return self._custom_format.fast_deltas
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def rich_root_data(self):
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if self._rich_root_data is None:
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self._rich_root_data = self._custom_format.rich_root_data
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return self._rich_root_data
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def supports_external_lookups(self):
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if self._supports_external_lookups is None:
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self._supports_external_lookups = \
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self._custom_format.supports_external_lookups
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return self._supports_external_lookups
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def supports_tree_reference(self):
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if self._supports_tree_reference is None:
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self._supports_tree_reference = \
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self._custom_format.supports_tree_reference
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return self._supports_tree_reference
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def _vfs_initialize(self, a_bzrdir, shared):
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"""Helper for common code in initialize."""
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if self._custom_format:
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# Custom format requested
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result = self._custom_format.initialize(a_bzrdir, shared=shared)
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elif self._creating_bzrdir is not None:
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# Use the format that the repository we were created to back
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prior_repo = self._creating_bzrdir.open_repository()
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prior_repo._ensure_real()
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result = prior_repo._real_repository._format.initialize(
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a_bzrdir, shared=shared)
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# assume that a_bzr is a RemoteBzrDir but the smart server didn't
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# support remote initialization.
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# We delegate to a real object at this point (as RemoteBzrDir
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# delegate to the repository format which would lead to infinite
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# recursion if we just called a_bzrdir.create_repository.
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a_bzrdir._ensure_real()
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result = a_bzrdir._real_bzrdir.create_repository(shared=shared)
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if not isinstance(result, RemoteRepository):
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return self.open(a_bzrdir)
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def initialize(self, a_bzrdir, shared=False):
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# Being asked to create on a non RemoteBzrDir:
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if not isinstance(a_bzrdir, RemoteBzrDir):
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return self._vfs_initialize(a_bzrdir, shared)
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medium = a_bzrdir._client._medium
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if medium._is_remote_before((1, 13)):
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return self._vfs_initialize(a_bzrdir, shared)
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# Creating on a remote bzr dir.
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# 1) get the network name to use.
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if self._custom_format:
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network_name = self._custom_format.network_name()
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elif self._network_name:
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network_name = self._network_name
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# Select the current bzrlib default and ask for that.
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reference_bzrdir_format = bzrdir.format_registry.get('default')()
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reference_format = reference_bzrdir_format.repository_format
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network_name = reference_format.network_name()
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# 2) try direct creation via RPC
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path = a_bzrdir._path_for_remote_call(a_bzrdir._client)
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verb = 'BzrDir.create_repository'
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response = a_bzrdir._call(verb, path, network_name, shared_str)
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except errors.UnknownSmartMethod:
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# Fallback - use vfs methods
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medium._remember_remote_is_before((1, 13))
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return self._vfs_initialize(a_bzrdir, shared)
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# Turn the response into a RemoteRepository object.
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format = response_tuple_to_repo_format(response[1:])
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# Used to support creating a real format instance when needed.
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format._creating_bzrdir = a_bzrdir
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remote_repo = RemoteRepository(a_bzrdir, format)
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format._creating_repo = remote_repo
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def open(self, a_bzrdir):
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if not isinstance(a_bzrdir, RemoteBzrDir):
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raise AssertionError('%r is not a RemoteBzrDir' % (a_bzrdir,))
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return a_bzrdir.open_repository()
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def _ensure_real(self):
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if self._custom_format is None:
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self._custom_format = repository.network_format_registry.get(
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def _fetch_order(self):
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return self._custom_format._fetch_order
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def _fetch_uses_deltas(self):
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return self._custom_format._fetch_uses_deltas
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def _fetch_reconcile(self):
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return self._custom_format._fetch_reconcile
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def get_format_description(self):
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return 'bzr remote repository'
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def __eq__(self, other):
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return self.__class__ is other.__class__
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def check_conversion_target(self, target_format):
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if self.rich_root_data and not target_format.rich_root_data:
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raise errors.BadConversionTarget(
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'Does not support rich root data.', target_format)
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if (self.supports_tree_reference and
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not getattr(target_format, 'supports_tree_reference', False)):
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raise errors.BadConversionTarget(
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'Does not support nested trees', target_format)
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def network_name(self):
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if self._network_name:
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return self._network_name
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self._creating_repo._ensure_real()
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return self._creating_repo._real_repository._format.network_name()
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def _serializer(self):
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return self._custom_format._serializer
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class RemoteRepository(_RpcHelper):
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"""Repository accessed over rpc.
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For the moment most operations are performed using local transport-backed
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def __init__(self, remote_bzrdir, format, real_repository=None, _client=None):
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"""Create a RemoteRepository instance.
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:param remote_bzrdir: The bzrdir hosting this repository.
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:param format: The RemoteFormat object to use.
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:param real_repository: If not None, a local implementation of the
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repository logic for the repository, usually accessing the data
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:param _client: Private testing parameter - override the smart client
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to be used by the repository.
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self._real_repository = real_repository
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self._real_repository = None
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self.bzrdir = remote_bzrdir
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self._client = remote_bzrdir._client
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self._client = _client
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self._format = format
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self._lock_mode = None
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self._lock_token = None
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self._leave_lock = False
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# Cache of revision parents; misses are cached during read locks, and
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# write locks when no _real_repository has been set.
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self._unstacked_provider = graph.CachingParentsProvider(
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get_parent_map=self._get_parent_map_rpc)
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self._unstacked_provider.disable_cache()
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# These depend on the actual remote format, so force them off for
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# maximum compatibility. XXX: In future these should depend on the
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# remote repository instance, but this is irrelevant until we perform
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# reconcile via an RPC call.
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self._reconcile_does_inventory_gc = False
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self._reconcile_fixes_text_parents = False
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self._reconcile_backsup_inventory = False
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self.base = self.bzrdir.transport.base
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# Additional places to query for data.
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self._fallback_repositories = []
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return "%s(%s)" % (self.__class__.__name__, self.base)
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def abort_write_group(self, suppress_errors=False):
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"""Complete a write group on the decorated repository.
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Smart methods perform operations in a single step so this API
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is not really applicable except as a compatibility thunk
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for older plugins that don't use e.g. the CommitBuilder
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:param suppress_errors: see Repository.abort_write_group.
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return self._real_repository.abort_write_group(
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suppress_errors=suppress_errors)
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"""Decorate the real repository for now.
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In the long term a full blown network facility is needed to avoid
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creating a real repository object locally.
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return self._real_repository.chk_bytes
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def commit_write_group(self):
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"""Complete a write group on the decorated repository.
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Smart methods perform operations in a single step so this API
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is not really applicable except as a compatibility thunk
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for older plugins that don't use e.g. the CommitBuilder
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return self._real_repository.commit_write_group()
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def resume_write_group(self, tokens):
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return self._real_repository.resume_write_group(tokens)
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def suspend_write_group(self):
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return self._real_repository.suspend_write_group()
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def get_missing_parent_inventories(self, check_for_missing_texts=True):
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return self._real_repository.get_missing_parent_inventories(
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check_for_missing_texts=check_for_missing_texts)
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def _ensure_real(self):
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"""Ensure that there is a _real_repository set.
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Used before calls to self._real_repository.
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Note that _ensure_real causes many roundtrips to the server which are
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not desirable, and prevents the use of smart one-roundtrip RPC's to
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perform complex operations (such as accessing parent data, streaming
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revisions etc). Adding calls to _ensure_real should only be done when
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bringing up new functionality, adding fallbacks for smart methods that
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require a fallback path, and never to replace an existing smart method
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invocation. If in doubt chat to the bzr network team.
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if self._real_repository is None:
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if 'hpss' in debug.debug_flags:
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warning('VFS Repository access triggered\n%s',
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''.join(traceback.format_stack()))
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self._unstacked_provider.missing_keys.clear()
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self.bzrdir._ensure_real()
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self._set_real_repository(
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self.bzrdir._real_bzrdir.open_repository())
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def _translate_error(self, err, **context):
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self.bzrdir._translate_error(err, repository=self, **context)
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def find_text_key_references(self):
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"""Find the text key references within the repository.
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:return: a dictionary mapping (file_id, revision_id) tuples to altered file-ids to an iterable of
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revision_ids. Each altered file-ids has the exact revision_ids that
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altered it listed explicitly.
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:return: A dictionary mapping text keys ((fileid, revision_id) tuples)
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to whether they were referred to by the inventory of the
712
revision_id that they contain. The inventory texts from all present
713
revision ids are assessed to generate this report.
716
return self._real_repository.find_text_key_references()
718
def _generate_text_key_index(self):
719
"""Generate a new text key index for the repository.
721
This is an expensive function that will take considerable time to run.
723
:return: A dict mapping (file_id, revision_id) tuples to a list of
724
parents, also (file_id, revision_id) tuples.
727
return self._real_repository._generate_text_key_index()
729
def _get_revision_graph(self, revision_id):
730
"""Private method for using with old (< 1.2) servers to fallback."""
731
if revision_id is None:
733
elif revision.is_null(revision_id):
736
path = self.bzrdir._path_for_remote_call(self._client)
737
response = self._call_expecting_body(
738
'Repository.get_revision_graph', path, revision_id)
739
response_tuple, response_handler = response
740
if response_tuple[0] != 'ok':
741
raise errors.UnexpectedSmartServerResponse(response_tuple)
742
coded = response_handler.read_body_bytes()
744
# no revisions in this repository!
746
lines = coded.split('\n')
749
d = tuple(line.split())
750
revision_graph[d[0]] = d[1:]
752
return revision_graph
755
"""See Repository._get_sink()."""
756
return RemoteStreamSink(self)
758
def _get_source(self, to_format):
759
"""Return a source for streaming from this repository."""
760
return RemoteStreamSource(self, to_format)
763
def has_revision(self, revision_id):
764
"""True if this repository has a copy of the revision."""
765
# Copy of bzrlib.repository.Repository.has_revision
766
return revision_id in self.has_revisions((revision_id,))
769
def has_revisions(self, revision_ids):
770
"""Probe to find out the presence of multiple revisions.
772
:param revision_ids: An iterable of revision_ids.
773
:return: A set of the revision_ids that were present.
775
# Copy of bzrlib.repository.Repository.has_revisions
776
parent_map = self.get_parent_map(revision_ids)
777
result = set(parent_map)
778
if _mod_revision.NULL_REVISION in revision_ids:
779
result.add(_mod_revision.NULL_REVISION)
782
def has_same_location(self, other):
783
return (self.__class__ is other.__class__ and
784
self.bzrdir.transport.base == other.bzrdir.transport.base)
786
def get_graph(self, other_repository=None):
787
"""Return the graph for this repository format"""
788
parents_provider = self._make_parents_provider(other_repository)
789
return graph.Graph(parents_provider)
791
def gather_stats(self, revid=None, committers=None):
792
"""See Repository.gather_stats()."""
793
path = self.bzrdir._path_for_remote_call(self._client)
794
# revid can be None to indicate no revisions, not just NULL_REVISION
795
if revid is None or revision.is_null(revid):
799
if committers is None or not committers:
800
fmt_committers = 'no'
802
fmt_committers = 'yes'
803
response_tuple, response_handler = self._call_expecting_body(
804
'Repository.gather_stats', path, fmt_revid, fmt_committers)
805
if response_tuple[0] != 'ok':
806
raise errors.UnexpectedSmartServerResponse(response_tuple)
808
body = response_handler.read_body_bytes()
810
for line in body.split('\n'):
813
key, val_text = line.split(':')
814
if key in ('revisions', 'size', 'committers'):
815
result[key] = int(val_text)
816
elif key in ('firstrev', 'latestrev'):
817
values = val_text.split(' ')[1:]
818
result[key] = (float(values[0]), long(values[1]))
822
def find_branches(self, using=False):
823
"""See Repository.find_branches()."""
824
# should be an API call to the server.
826
return self._real_repository.find_branches(using=using)
828
def get_physical_lock_status(self):
829
"""See Repository.get_physical_lock_status()."""
830
# should be an API call to the server.
832
return self._real_repository.get_physical_lock_status()
834
def is_in_write_group(self):
835
"""Return True if there is an open write group.
837
write groups are only applicable locally for the smart server..
839
if self._real_repository:
840
return self._real_repository.is_in_write_group()
843
return self._lock_count >= 1
846
"""See Repository.is_shared()."""
847
path = self.bzrdir._path_for_remote_call(self._client)
848
response = self._call('Repository.is_shared', path)
849
if response[0] not in ('yes', 'no'):
850
raise SmartProtocolError('unexpected response code %s' % (response,))
851
return response[0] == 'yes'
853
def is_write_locked(self):
854
return self._lock_mode == 'w'
857
# wrong eventually - want a local lock cache context
858
if not self._lock_mode:
859
self._lock_mode = 'r'
861
self._unstacked_provider.enable_cache(cache_misses=True)
862
if self._real_repository is not None:
863
self._real_repository.lock_read()
864
for repo in self._fallback_repositories:
867
self._lock_count += 1
869
def _remote_lock_write(self, token):
870
path = self.bzrdir._path_for_remote_call(self._client)
873
err_context = {'token': token}
874
response = self._call('Repository.lock_write', path, token,
876
if response[0] == 'ok':
880
raise errors.UnexpectedSmartServerResponse(response)
882
def lock_write(self, token=None, _skip_rpc=False):
883
if not self._lock_mode:
885
if self._lock_token is not None:
886
if token != self._lock_token:
887
raise errors.TokenMismatch(token, self._lock_token)
888
self._lock_token = token
890
self._lock_token = self._remote_lock_write(token)
891
# if self._lock_token is None, then this is something like packs or
892
# svn where we don't get to lock the repo, or a weave style repository
893
# where we cannot lock it over the wire and attempts to do so will
895
if self._real_repository is not None:
896
self._real_repository.lock_write(token=self._lock_token)
897
if token is not None:
898
self._leave_lock = True
900
self._leave_lock = False
901
self._lock_mode = 'w'
903
cache_misses = self._real_repository is None
904
self._unstacked_provider.enable_cache(cache_misses=cache_misses)
905
for repo in self._fallback_repositories:
906
# Writes don't affect fallback repos
908
elif self._lock_mode == 'r':
909
raise errors.ReadOnlyError(self)
911
self._lock_count += 1
912
return self._lock_token or None
914
def leave_lock_in_place(self):
915
if not self._lock_token:
916
raise NotImplementedError(self.leave_lock_in_place)
917
self._leave_lock = True
919
def dont_leave_lock_in_place(self):
920
if not self._lock_token:
921
raise NotImplementedError(self.dont_leave_lock_in_place)
922
self._leave_lock = False
924
def _set_real_repository(self, repository):
925
"""Set the _real_repository for this repository.
927
:param repository: The repository to fallback to for non-hpss
928
implemented operations.
930
if self._real_repository is not None:
931
# Replacing an already set real repository.
932
# We cannot do this [currently] if the repository is locked -
933
# synchronised state might be lost.
935
raise AssertionError('_real_repository is already set')
936
if isinstance(repository, RemoteRepository):
937
raise AssertionError()
938
self._real_repository = repository
939
# three code paths happen here:
940
# 1) old servers, RemoteBranch.open() calls _ensure_real before setting
941
# up stacking. In this case self._fallback_repositories is [], and the
942
# real repo is already setup. Preserve the real repo and
943
# RemoteRepository.add_fallback_repository will avoid adding
945
# 2) new servers, RemoteBranch.open() sets up stacking, and when
946
# ensure_real is triggered from a branch, the real repository to
947
# set already has a matching list with separate instances, but
948
# as they are also RemoteRepositories we don't worry about making the
949
# lists be identical.
950
# 3) new servers, RemoteRepository.ensure_real is triggered before
951
# RemoteBranch.ensure real, in this case we get a repo with no fallbacks
952
# and need to populate it.
953
if (self._fallback_repositories and
954
len(self._real_repository._fallback_repositories) !=
955
len(self._fallback_repositories)):
956
if len(self._real_repository._fallback_repositories):
957
raise AssertionError(
958
"cannot cleanly remove existing _fallback_repositories")
959
for fb in self._fallback_repositories:
960
self._real_repository.add_fallback_repository(fb)
961
if self._lock_mode == 'w':
962
# if we are already locked, the real repository must be able to
963
# acquire the lock with our token.
964
self._real_repository.lock_write(self._lock_token)
965
elif self._lock_mode == 'r':
966
self._real_repository.lock_read()
968
def start_write_group(self):
969
"""Start a write group on the decorated repository.
971
Smart methods perform operations in a single step so this API
972
is not really applicable except as a compatibility thunk
973
for older plugins that don't use e.g. the CommitBuilder
977
return self._real_repository.start_write_group()
979
def _unlock(self, token):
980
path = self.bzrdir._path_for_remote_call(self._client)
982
# with no token the remote repository is not persistently locked.
984
err_context = {'token': token}
985
response = self._call('Repository.unlock', path, token,
987
if response == ('ok',):
990
raise errors.UnexpectedSmartServerResponse(response)
993
if not self._lock_count:
994
raise errors.LockNotHeld(self)
995
self._lock_count -= 1
996
if self._lock_count > 0:
998
self._unstacked_provider.disable_cache()
999
old_mode = self._lock_mode
1000
self._lock_mode = None
1002
# The real repository is responsible at present for raising an
1003
# exception if it's in an unfinished write group. However, it
1004
# normally will *not* actually remove the lock from disk - that's
1005
# done by the server on receiving the Repository.unlock call.
1006
# This is just to let the _real_repository stay up to date.
1007
if self._real_repository is not None:
1008
self._real_repository.unlock()
1010
# The rpc-level lock should be released even if there was a
1011
# problem releasing the vfs-based lock.
1013
# Only write-locked repositories need to make a remote method
1014
# call to perform the unlock.
1015
old_token = self._lock_token
1016
self._lock_token = None
1017
if not self._leave_lock:
1018
self._unlock(old_token)
1019
# Fallbacks are always 'lock_read()' so we don't pay attention to
1021
for repo in self._fallback_repositories:
1024
def break_lock(self):
1025
# should hand off to the network
1027
return self._real_repository.break_lock()
1029
def _get_tarball(self, compression):
1030
"""Return a TemporaryFile containing a repository tarball.
1032
Returns None if the server does not support sending tarballs.
1035
path = self.bzrdir._path_for_remote_call(self._client)
1037
response, protocol = self._call_expecting_body(
1038
'Repository.tarball', path, compression)
1039
except errors.UnknownSmartMethod:
1040
protocol.cancel_read_body()
1042
if response[0] == 'ok':
1043
# Extract the tarball and return it
1044
t = tempfile.NamedTemporaryFile()
1045
# TODO: rpc layer should read directly into it...
1046
t.write(protocol.read_body_bytes())
1049
raise errors.UnexpectedSmartServerResponse(response)
1051
def sprout(self, to_bzrdir, revision_id=None):
1052
# TODO: Option to control what format is created?
1054
dest_repo = self._real_repository._format.initialize(to_bzrdir,
1056
dest_repo.fetch(self, revision_id=revision_id)
1059
### These methods are just thin shims to the VFS object for now.
1061
def revision_tree(self, revision_id):
1063
return self._real_repository.revision_tree(revision_id)
1065
def get_serializer_format(self):
1067
return self._real_repository.get_serializer_format()
1069
def get_commit_builder(self, branch, parents, config, timestamp=None,
1070
timezone=None, committer=None, revprops=None,
1072
# FIXME: It ought to be possible to call this without immediately
1073
# triggering _ensure_real. For now it's the easiest thing to do.
1075
real_repo = self._real_repository
1076
builder = real_repo.get_commit_builder(branch, parents,
1077
config, timestamp=timestamp, timezone=timezone,
1078
committer=committer, revprops=revprops, revision_id=revision_id)
1081
def add_fallback_repository(self, repository):
1082
"""Add a repository to use for looking up data not held locally.
1084
:param repository: A repository.
1086
if not self._format.supports_external_lookups:
1087
raise errors.UnstackableRepositoryFormat(
1088
self._format.network_name(), self.base)
1089
# We need to accumulate additional repositories here, to pass them in
1092
if self.is_locked():
1093
# We will call fallback.unlock() when we transition to the unlocked
1094
# state, so always add a lock here. If a caller passes us a locked
1095
# repository, they are responsible for unlocking it later.
1096
repository.lock_read()
1097
self._fallback_repositories.append(repository)
1098
# If self._real_repository was parameterised already (e.g. because a
1099
# _real_branch had its get_stacked_on_url method called), then the
1100
# repository to be added may already be in the _real_repositories list.
1101
if self._real_repository is not None:
1102
fallback_locations = [repo.bzrdir.root_transport.base for repo in
1103
self._real_repository._fallback_repositories]
1104
if repository.bzrdir.root_transport.base not in fallback_locations:
1105
self._real_repository.add_fallback_repository(repository)
1107
def add_inventory(self, revid, inv, parents):
1109
return self._real_repository.add_inventory(revid, inv, parents)
1111
def add_inventory_by_delta(self, basis_revision_id, delta, new_revision_id,
1114
return self._real_repository.add_inventory_by_delta(basis_revision_id,
1115
delta, new_revision_id, parents)
1117
def add_revision(self, rev_id, rev, inv=None, config=None):
1119
return self._real_repository.add_revision(
1120
rev_id, rev, inv=inv, config=config)
1123
def get_inventory(self, revision_id):
1125
return self._real_repository.get_inventory(revision_id)
1127
def iter_inventories(self, revision_ids):
1129
return self._real_repository.iter_inventories(revision_ids)
1132
def get_revision(self, revision_id):
1134
return self._real_repository.get_revision(revision_id)
1136
def get_transaction(self):
1138
return self._real_repository.get_transaction()
1141
def clone(self, a_bzrdir, revision_id=None):
1143
return self._real_repository.clone(a_bzrdir, revision_id=revision_id)
1145
def make_working_trees(self):
1146
"""See Repository.make_working_trees"""
1148
return self._real_repository.make_working_trees()
1150
def refresh_data(self):
1151
"""Re-read any data needed to to synchronise with disk.
1153
This method is intended to be called after another repository instance
1154
(such as one used by a smart server) has inserted data into the
1155
repository. It may not be called during a write group, but may be
1156
called at any other time.
1158
if self.is_in_write_group():
1159
raise errors.InternalBzrError(
1160
"May not refresh_data while in a write group.")
1161
if self._real_repository is not None:
1162
self._real_repository.refresh_data()
1164
def revision_ids_to_search_result(self, result_set):
1165
"""Convert a set of revision ids to a graph SearchResult."""
1166
result_parents = set()
1167
for parents in self.get_graph().get_parent_map(
1168
result_set).itervalues():
1169
result_parents.update(parents)
1170
included_keys = result_set.intersection(result_parents)
1171
start_keys = result_set.difference(included_keys)
1172
exclude_keys = result_parents.difference(result_set)
1173
result = graph.SearchResult(start_keys, exclude_keys,
1174
len(result_set), result_set)
1178
def search_missing_revision_ids(self, other, revision_id=None, find_ghosts=True):
1179
"""Return the revision ids that other has that this does not.
1181
These are returned in topological order.
1183
revision_id: only return revision ids included by revision_id.
1185
return repository.InterRepository.get(
1186
other, self).search_missing_revision_ids(revision_id, find_ghosts)
1188
def fetch(self, source, revision_id=None, pb=None, find_ghosts=False,
1190
# No base implementation to use as RemoteRepository is not a subclass
1191
# of Repository; so this is a copy of Repository.fetch().
1192
if fetch_spec is not None and revision_id is not None:
1193
raise AssertionError(
1194
"fetch_spec and revision_id are mutually exclusive.")
1195
if self.is_in_write_group():
1196
raise errors.InternalBzrError(
1197
"May not fetch while in a write group.")
1198
# fast path same-url fetch operations
1199
if self.has_same_location(source) and fetch_spec is None:
1200
# check that last_revision is in 'from' and then return a
1202
if (revision_id is not None and
1203
not revision.is_null(revision_id)):
1204
self.get_revision(revision_id)
1206
# if there is no specific appropriate InterRepository, this will get
1207
# the InterRepository base class, which raises an
1208
# IncompatibleRepositories when asked to fetch.
1209
inter = repository.InterRepository.get(source, self)
1210
return inter.fetch(revision_id=revision_id, pb=pb,
1211
find_ghosts=find_ghosts, fetch_spec=fetch_spec)
1213
def create_bundle(self, target, base, fileobj, format=None):
1215
self._real_repository.create_bundle(target, base, fileobj, format)
1218
def get_ancestry(self, revision_id, topo_sorted=True):
1220
return self._real_repository.get_ancestry(revision_id, topo_sorted)
1222
def fileids_altered_by_revision_ids(self, revision_ids):
1224
return self._real_repository.fileids_altered_by_revision_ids(revision_ids)
1226
def _get_versioned_file_checker(self, revisions, revision_versions_cache):
1228
return self._real_repository._get_versioned_file_checker(
1229
revisions, revision_versions_cache)
1231
def iter_files_bytes(self, desired_files):
1232
"""See Repository.iter_file_bytes.
1235
return self._real_repository.iter_files_bytes(desired_files)
1237
def get_parent_map(self, revision_ids):
1238
"""See bzrlib.Graph.get_parent_map()."""
1239
return self._make_parents_provider().get_parent_map(revision_ids)
1241
def _get_parent_map_rpc(self, keys):
1242
"""Helper for get_parent_map that performs the RPC."""
1243
medium = self._client._medium
1244
if medium._is_remote_before((1, 2)):
1245
# We already found out that the server can't understand
1246
# Repository.get_parent_map requests, so just fetch the whole
1249
# Note that this reads the whole graph, when only some keys are
1250
# wanted. On this old server there's no way (?) to get them all
1251
# in one go, and the user probably will have seen a warning about
1252
# the server being old anyhow.
1253
rg = self._get_revision_graph(None)
1254
# There is an API discrepancy between get_parent_map and
1255
# get_revision_graph. Specifically, a "key:()" pair in
1256
# get_revision_graph just means a node has no parents. For
1257
# "get_parent_map" it means the node is a ghost. So fix up the
1258
# graph to correct this.
1259
# https://bugs.launchpad.net/bzr/+bug/214894
1260
# There is one other "bug" which is that ghosts in
1261
# get_revision_graph() are not returned at all. But we won't worry
1262
# about that for now.
1263
for node_id, parent_ids in rg.iteritems():
1264
if parent_ids == ():
1265
rg[node_id] = (NULL_REVISION,)
1266
rg[NULL_REVISION] = ()
1271
raise ValueError('get_parent_map(None) is not valid')
1272
if NULL_REVISION in keys:
1273
keys.discard(NULL_REVISION)
1274
found_parents = {NULL_REVISION:()}
1276
return found_parents
1279
# TODO(Needs analysis): We could assume that the keys being requested
1280
# from get_parent_map are in a breadth first search, so typically they
1281
# will all be depth N from some common parent, and we don't have to
1282
# have the server iterate from the root parent, but rather from the
1283
# keys we're searching; and just tell the server the keyspace we
1284
# already have; but this may be more traffic again.
1286
# Transform self._parents_map into a search request recipe.
1287
# TODO: Manage this incrementally to avoid covering the same path
1288
# repeatedly. (The server will have to on each request, but the less
1289
# work done the better).
1291
# Negative caching notes:
1292
# new server sends missing when a request including the revid
1293
# 'include-missing:' is present in the request.
1294
# missing keys are serialised as missing:X, and we then call
1295
# provider.note_missing(X) for-all X
1296
parents_map = self._unstacked_provider.get_cached_map()
1297
if parents_map is None:
1298
# Repository is not locked, so there's no cache.
1300
# start_set is all the keys in the cache
1301
start_set = set(parents_map)
1302
# result set is all the references to keys in the cache
1303
result_parents = set()
1304
for parents in parents_map.itervalues():
1305
result_parents.update(parents)
1306
stop_keys = result_parents.difference(start_set)
1307
# We don't need to send ghosts back to the server as a position to
1309
stop_keys.difference_update(self._unstacked_provider.missing_keys)
1310
key_count = len(parents_map)
1311
if (NULL_REVISION in result_parents
1312
and NULL_REVISION in self._unstacked_provider.missing_keys):
1313
# If we pruned NULL_REVISION from the stop_keys because it's also
1314
# in our cache of "missing" keys we need to increment our key count
1315
# by 1, because the reconsitituted SearchResult on the server will
1316
# still consider NULL_REVISION to be an included key.
1318
included_keys = start_set.intersection(result_parents)
1319
start_set.difference_update(included_keys)
1320
recipe = ('manual', start_set, stop_keys, key_count)
1321
body = self._serialise_search_recipe(recipe)
1322
path = self.bzrdir._path_for_remote_call(self._client)
1324
if type(key) is not str:
1326
"key %r not a plain string" % (key,))
1327
verb = 'Repository.get_parent_map'
1328
args = (path, 'include-missing:') + tuple(keys)
1330
response = self._call_with_body_bytes_expecting_body(
1332
except errors.UnknownSmartMethod:
1333
# Server does not support this method, so get the whole graph.
1334
# Worse, we have to force a disconnection, because the server now
1335
# doesn't realise it has a body on the wire to consume, so the
1336
# only way to recover is to abandon the connection.
1338
'Server is too old for fast get_parent_map, reconnecting. '
1339
'(Upgrade the server to Bazaar 1.2 to avoid this)')
1341
# To avoid having to disconnect repeatedly, we keep track of the
1342
# fact the server doesn't understand remote methods added in 1.2.
1343
medium._remember_remote_is_before((1, 2))
1344
# Recurse just once and we should use the fallback code.
1345
return self._get_parent_map_rpc(keys)
1346
response_tuple, response_handler = response
1347
if response_tuple[0] not in ['ok']:
1348
response_handler.cancel_read_body()
1349
raise errors.UnexpectedSmartServerResponse(response_tuple)
1350
if response_tuple[0] == 'ok':
1351
coded = bz2.decompress(response_handler.read_body_bytes())
1353
# no revisions found
1355
lines = coded.split('\n')
1358
d = tuple(line.split())
1360
revision_graph[d[0]] = d[1:]
1363
if d[0].startswith('missing:'):
1365
self._unstacked_provider.note_missing_key(revid)
1367
# no parents - so give the Graph result
1369
revision_graph[d[0]] = (NULL_REVISION,)
1370
return revision_graph
1373
def get_signature_text(self, revision_id):
1375
return self._real_repository.get_signature_text(revision_id)
1378
def get_inventory_xml(self, revision_id):
1380
return self._real_repository.get_inventory_xml(revision_id)
1382
def deserialise_inventory(self, revision_id, xml):
1384
return self._real_repository.deserialise_inventory(revision_id, xml)
1386
def reconcile(self, other=None, thorough=False):
1388
return self._real_repository.reconcile(other=other, thorough=thorough)
1390
def all_revision_ids(self):
1392
return self._real_repository.all_revision_ids()
1395
def get_deltas_for_revisions(self, revisions, specific_fileids=None):
1397
return self._real_repository.get_deltas_for_revisions(revisions,
1398
specific_fileids=specific_fileids)
1401
def get_revision_delta(self, revision_id, specific_fileids=None):
1403
return self._real_repository.get_revision_delta(revision_id,
1404
specific_fileids=specific_fileids)
1407
def revision_trees(self, revision_ids):
1409
return self._real_repository.revision_trees(revision_ids)
1412
def get_revision_reconcile(self, revision_id):
1414
return self._real_repository.get_revision_reconcile(revision_id)
1417
def check(self, revision_ids=None):
1419
return self._real_repository.check(revision_ids=revision_ids)
1421
def copy_content_into(self, destination, revision_id=None):
1423
return self._real_repository.copy_content_into(
1424
destination, revision_id=revision_id)
1426
def _copy_repository_tarball(self, to_bzrdir, revision_id=None):
1427
# get a tarball of the remote repository, and copy from that into the
1429
from bzrlib import osutils
1431
# TODO: Maybe a progress bar while streaming the tarball?
1432
note("Copying repository content as tarball...")
1433
tar_file = self._get_tarball('bz2')
1434
if tar_file is None:
1436
destination = to_bzrdir.create_repository()
1438
tar = tarfile.open('repository', fileobj=tar_file,
1440
tmpdir = osutils.mkdtemp()
1442
_extract_tar(tar, tmpdir)
1443
tmp_bzrdir = BzrDir.open(tmpdir)
1444
tmp_repo = tmp_bzrdir.open_repository()
1445
tmp_repo.copy_content_into(destination, revision_id)
1447
osutils.rmtree(tmpdir)
1451
# TODO: Suggestion from john: using external tar is much faster than
1452
# python's tarfile library, but it may not work on windows.
1455
def inventories(self):
1456
"""Decorate the real repository for now.
1458
In the long term a full blown network facility is needed to
1459
avoid creating a real repository object locally.
1462
return self._real_repository.inventories
1466
"""Compress the data within the repository.
1468
This is not currently implemented within the smart server.
1471
return self._real_repository.pack()
1474
def revisions(self):
1475
"""Decorate the real repository for now.
1477
In the short term this should become a real object to intercept graph
1480
In the long term a full blown network facility is needed.
1483
return self._real_repository.revisions
1485
def set_make_working_trees(self, new_value):
1487
new_value_str = "True"
1489
new_value_str = "False"
1490
path = self.bzrdir._path_for_remote_call(self._client)
1492
response = self._call(
1493
'Repository.set_make_working_trees', path, new_value_str)
1494
except errors.UnknownSmartMethod:
1496
self._real_repository.set_make_working_trees(new_value)
1498
if response[0] != 'ok':
1499
raise errors.UnexpectedSmartServerResponse(response)
1502
def signatures(self):
1503
"""Decorate the real repository for now.
1505
In the long term a full blown network facility is needed to avoid
1506
creating a real repository object locally.
1509
return self._real_repository.signatures
1512
def sign_revision(self, revision_id, gpg_strategy):
1514
return self._real_repository.sign_revision(revision_id, gpg_strategy)
1518
"""Decorate the real repository for now.
1520
In the long term a full blown network facility is needed to avoid
1521
creating a real repository object locally.
1524
return self._real_repository.texts
1527
def get_revisions(self, revision_ids):
1529
return self._real_repository.get_revisions(revision_ids)
1531
def supports_rich_root(self):
1532
return self._format.rich_root_data
1534
def iter_reverse_revision_history(self, revision_id):
1536
return self._real_repository.iter_reverse_revision_history(revision_id)
1539
def _serializer(self):
1540
return self._format._serializer
1542
def store_revision_signature(self, gpg_strategy, plaintext, revision_id):
1544
return self._real_repository.store_revision_signature(
1545
gpg_strategy, plaintext, revision_id)
1547
def add_signature_text(self, revision_id, signature):
1549
return self._real_repository.add_signature_text(revision_id, signature)
1551
def has_signature_for_revision_id(self, revision_id):
1553
return self._real_repository.has_signature_for_revision_id(revision_id)
1555
def item_keys_introduced_by(self, revision_ids, _files_pb=None):
1557
return self._real_repository.item_keys_introduced_by(revision_ids,
1558
_files_pb=_files_pb)
1560
def revision_graph_can_have_wrong_parents(self):
1561
# The answer depends on the remote repo format.
1563
return self._real_repository.revision_graph_can_have_wrong_parents()
1565
def _find_inconsistent_revision_parents(self):
1567
return self._real_repository._find_inconsistent_revision_parents()
1569
def _check_for_inconsistent_revision_parents(self):
1571
return self._real_repository._check_for_inconsistent_revision_parents()
1573
def _make_parents_provider(self, other=None):
1574
providers = [self._unstacked_provider]
1575
if other is not None:
1576
providers.insert(0, other)
1577
providers.extend(r._make_parents_provider() for r in
1578
self._fallback_repositories)
1579
return graph._StackedParentsProvider(providers)
1581
def _serialise_search_recipe(self, recipe):
1582
"""Serialise a graph search recipe.
1584
:param recipe: A search recipe (start, stop, count).
1585
:return: Serialised bytes.
1587
start_keys = ' '.join(recipe[1])
1588
stop_keys = ' '.join(recipe[2])
1589
count = str(recipe[3])
1590
return '\n'.join((start_keys, stop_keys, count))
1592
def _serialise_search_result(self, search_result):
1593
if isinstance(search_result, graph.PendingAncestryResult):
1594
parts = ['ancestry-of']
1595
parts.extend(search_result.heads)
1597
recipe = search_result.get_recipe()
1598
parts = [recipe[0], self._serialise_search_recipe(recipe)]
1599
return '\n'.join(parts)
1602
path = self.bzrdir._path_for_remote_call(self._client)
1604
response = self._call('PackRepository.autopack', path)
1605
except errors.UnknownSmartMethod:
1607
self._real_repository._pack_collection.autopack()
1610
if response[0] != 'ok':
1611
raise errors.UnexpectedSmartServerResponse(response)
1614
class RemoteStreamSink(repository.StreamSink):
1616
def _insert_real(self, stream, src_format, resume_tokens):
1617
self.target_repo._ensure_real()
1618
sink = self.target_repo._real_repository._get_sink()
1619
result = sink.insert_stream(stream, src_format, resume_tokens)
1621
self.target_repo.autopack()
1624
def insert_stream(self, stream, src_format, resume_tokens):
1625
target = self.target_repo
1626
target._unstacked_provider.missing_keys.clear()
1627
if target._lock_token:
1628
verb = 'Repository.insert_stream_locked'
1629
extra_args = (target._lock_token or '',)
1630
required_version = (1, 14)
1632
verb = 'Repository.insert_stream'
1634
required_version = (1, 13)
1635
client = target._client
1636
medium = client._medium
1637
if medium._is_remote_before(required_version):
1638
# No possible way this can work.
1639
return self._insert_real(stream, src_format, resume_tokens)
1640
path = target.bzrdir._path_for_remote_call(client)
1641
if not resume_tokens:
1642
# XXX: Ugly but important for correctness, *will* be fixed during
1643
# 1.13 cycle. Pushing a stream that is interrupted results in a
1644
# fallback to the _real_repositories sink *with a partial stream*.
1645
# Thats bad because we insert less data than bzr expected. To avoid
1646
# this we do a trial push to make sure the verb is accessible, and
1647
# do not fallback when actually pushing the stream. A cleanup patch
1648
# is going to look at rewinding/restarting the stream/partial
1650
byte_stream = smart_repo._stream_to_byte_stream([], src_format)
1652
response = client.call_with_body_stream(
1653
(verb, path, '') + extra_args, byte_stream)
1654
except errors.UnknownSmartMethod:
1655
medium._remember_remote_is_before(required_version)
1656
return self._insert_real(stream, src_format, resume_tokens)
1657
byte_stream = smart_repo._stream_to_byte_stream(
1659
resume_tokens = ' '.join(resume_tokens)
1660
response = client.call_with_body_stream(
1661
(verb, path, resume_tokens) + extra_args, byte_stream)
1662
if response[0][0] not in ('ok', 'missing-basis'):
1663
raise errors.UnexpectedSmartServerResponse(response)
1664
if response[0][0] == 'missing-basis':
1665
tokens, missing_keys = bencode.bdecode_as_tuple(response[0][1])
1666
resume_tokens = tokens
1667
return resume_tokens, set(missing_keys)
1669
self.target_repo.refresh_data()
1673
class RemoteStreamSource(repository.StreamSource):
1674
"""Stream data from a remote server."""
1676
def get_stream(self, search):
1677
if (self.from_repository._fallback_repositories and
1678
self.to_format._fetch_order == 'topological'):
1679
return self._real_stream(self.from_repository, search)
1680
return self.missing_parents_chain(search, [self.from_repository] +
1681
self.from_repository._fallback_repositories)
1683
def _real_stream(self, repo, search):
1684
"""Get a stream for search from repo.
1686
This never called RemoteStreamSource.get_stream, and is a heler
1687
for RemoteStreamSource._get_stream to allow getting a stream
1688
reliably whether fallback back because of old servers or trying
1689
to stream from a non-RemoteRepository (which the stacked support
1692
source = repo._get_source(self.to_format)
1693
if isinstance(source, RemoteStreamSource):
1694
return repository.StreamSource.get_stream(source, search)
1695
return source.get_stream(search)
1697
def _get_stream(self, repo, search):
1698
"""Core worker to get a stream from repo for search.
1700
This is used by both get_stream and the stacking support logic. It
1701
deliberately gets a stream for repo which does not need to be
1702
self.from_repository. In the event that repo is not Remote, or
1703
cannot do a smart stream, a fallback is made to the generic
1704
repository._get_stream() interface, via self._real_stream.
1706
In the event of stacking, streams from _get_stream will not
1707
contain all the data for search - this is normal (see get_stream).
1709
:param repo: A repository.
1710
:param search: A search.
1712
# Fallbacks may be non-smart
1713
if not isinstance(repo, RemoteRepository):
1714
return self._real_stream(repo, search)
1715
client = repo._client
1716
medium = client._medium
1717
if medium._is_remote_before((1, 13)):
1718
# streaming was added in 1.13
1719
return self._real_stream(repo, search)
1720
path = repo.bzrdir._path_for_remote_call(client)
1722
search_bytes = repo._serialise_search_result(search)
1723
response = repo._call_with_body_bytes_expecting_body(
1724
'Repository.get_stream',
1725
(path, self.to_format.network_name()), search_bytes)
1726
response_tuple, response_handler = response
1727
except errors.UnknownSmartMethod:
1728
medium._remember_remote_is_before((1,13))
1729
return self._real_stream(repo, search)
1730
if response_tuple[0] != 'ok':
1731
raise errors.UnexpectedSmartServerResponse(response_tuple)
1732
byte_stream = response_handler.read_streamed_body()
1733
src_format, stream = smart_repo._byte_stream_to_stream(byte_stream)
1734
if src_format.network_name() != repo._format.network_name():
1735
raise AssertionError(
1736
"Mismatched RemoteRepository and stream src %r, %r" % (
1737
src_format.network_name(), repo._format.network_name()))
1740
def missing_parents_chain(self, search, sources):
1741
"""Chain multiple streams together to handle stacking.
1743
:param search: The overall search to satisfy with streams.
1744
:param sources: A list of Repository objects to query.
1746
self.serialiser = self.to_format._serializer
1747
self.seen_revs = set()
1748
self.referenced_revs = set()
1749
# If there are heads in the search, or the key count is > 0, we are not
1751
while not search.is_empty() and len(sources) > 1:
1752
source = sources.pop(0)
1753
stream = self._get_stream(source, search)
1754
for kind, substream in stream:
1755
if kind != 'revisions':
1756
yield kind, substream
1758
yield kind, self.missing_parents_rev_handler(substream)
1759
search = search.refine(self.seen_revs, self.referenced_revs)
1760
self.seen_revs = set()
1761
self.referenced_revs = set()
1762
if not search.is_empty():
1763
for kind, stream in self._get_stream(sources[0], search):
1766
def missing_parents_rev_handler(self, substream):
1767
for content in substream:
1768
revision_bytes = content.get_bytes_as('fulltext')
1769
revision = self.serialiser.read_revision_from_string(revision_bytes)
1770
self.seen_revs.add(content.key[-1])
1771
self.referenced_revs.update(revision.parent_ids)
1775
class RemoteBranchLockableFiles(LockableFiles):
1776
"""A 'LockableFiles' implementation that talks to a smart server.
1778
This is not a public interface class.
1781
def __init__(self, bzrdir, _client):
1782
self.bzrdir = bzrdir
1783
self._client = _client
1784
self._need_find_modes = True
1785
LockableFiles.__init__(
1786
self, bzrdir.get_branch_transport(None),
1787
'lock', lockdir.LockDir)
1789
def _find_modes(self):
1790
# RemoteBranches don't let the client set the mode of control files.
1791
self._dir_mode = None
1792
self._file_mode = None
1795
class RemoteBranchFormat(branch.BranchFormat):
1797
def __init__(self, network_name=None):
1798
super(RemoteBranchFormat, self).__init__()
1799
self._matchingbzrdir = RemoteBzrDirFormat()
1800
self._matchingbzrdir.set_branch_format(self)
1801
self._custom_format = None
1802
self._network_name = network_name
1804
def __eq__(self, other):
1805
return (isinstance(other, RemoteBranchFormat) and
1806
self.__dict__ == other.__dict__)
1808
def _ensure_real(self):
1809
if self._custom_format is None:
1810
self._custom_format = branch.network_format_registry.get(
1813
def get_format_description(self):
1814
return 'Remote BZR Branch'
1816
def network_name(self):
1817
return self._network_name
1819
def open(self, a_bzrdir, ignore_fallbacks=False):
1820
return a_bzrdir.open_branch(ignore_fallbacks=ignore_fallbacks)
1822
def _vfs_initialize(self, a_bzrdir):
1823
# Initialisation when using a local bzrdir object, or a non-vfs init
1824
# method is not available on the server.
1825
# self._custom_format is always set - the start of initialize ensures
1827
if isinstance(a_bzrdir, RemoteBzrDir):
1828
a_bzrdir._ensure_real()
1829
result = self._custom_format.initialize(a_bzrdir._real_bzrdir)
1831
# We assume the bzrdir is parameterised; it may not be.
1832
result = self._custom_format.initialize(a_bzrdir)
1833
if (isinstance(a_bzrdir, RemoteBzrDir) and
1834
not isinstance(result, RemoteBranch)):
1835
result = RemoteBranch(a_bzrdir, a_bzrdir.find_repository(), result)
1838
def initialize(self, a_bzrdir):
1839
# 1) get the network name to use.
1840
if self._custom_format:
1841
network_name = self._custom_format.network_name()
1843
# Select the current bzrlib default and ask for that.
1844
reference_bzrdir_format = bzrdir.format_registry.get('default')()
1845
reference_format = reference_bzrdir_format.get_branch_format()
1846
self._custom_format = reference_format
1847
network_name = reference_format.network_name()
1848
# Being asked to create on a non RemoteBzrDir:
1849
if not isinstance(a_bzrdir, RemoteBzrDir):
1850
return self._vfs_initialize(a_bzrdir)
1851
medium = a_bzrdir._client._medium
1852
if medium._is_remote_before((1, 13)):
1853
return self._vfs_initialize(a_bzrdir)
1854
# Creating on a remote bzr dir.
1855
# 2) try direct creation via RPC
1856
path = a_bzrdir._path_for_remote_call(a_bzrdir._client)
1857
verb = 'BzrDir.create_branch'
1859
response = a_bzrdir._call(verb, path, network_name)
1860
except errors.UnknownSmartMethod:
1861
# Fallback - use vfs methods
1862
medium._remember_remote_is_before((1, 13))
1863
return self._vfs_initialize(a_bzrdir)
1864
if response[0] != 'ok':
1865
raise errors.UnexpectedSmartServerResponse(response)
1866
# Turn the response into a RemoteRepository object.
1867
format = RemoteBranchFormat(network_name=response[1])
1868
repo_format = response_tuple_to_repo_format(response[3:])
1869
if response[2] == '':
1870
repo_bzrdir = a_bzrdir
1872
repo_bzrdir = RemoteBzrDir(
1873
a_bzrdir.root_transport.clone(response[2]), a_bzrdir._format,
1875
remote_repo = RemoteRepository(repo_bzrdir, repo_format)
1876
remote_branch = RemoteBranch(a_bzrdir, remote_repo,
1877
format=format, setup_stacking=False)
1878
# XXX: We know this is a new branch, so it must have revno 0, revid
1879
# NULL_REVISION. Creating the branch locked would make this be unable
1880
# to be wrong; here its simply very unlikely to be wrong. RBC 20090225
1881
remote_branch._last_revision_info_cache = 0, NULL_REVISION
1882
return remote_branch
1884
def make_tags(self, branch):
1886
return self._custom_format.make_tags(branch)
1888
def supports_tags(self):
1889
# Remote branches might support tags, but we won't know until we
1890
# access the real remote branch.
1892
return self._custom_format.supports_tags()
1894
def supports_stacking(self):
1896
return self._custom_format.supports_stacking()
1899
class RemoteBranch(branch.Branch, _RpcHelper):
1900
"""Branch stored on a server accessed by HPSS RPC.
1902
At the moment most operations are mapped down to simple file operations.
1905
def __init__(self, remote_bzrdir, remote_repository, real_branch=None,
1906
_client=None, format=None, setup_stacking=True):
1907
"""Create a RemoteBranch instance.
1909
:param real_branch: An optional local implementation of the branch
1910
format, usually accessing the data via the VFS.
1911
:param _client: Private parameter for testing.
1912
:param format: A RemoteBranchFormat object, None to create one
1913
automatically. If supplied it should have a network_name already
1915
:param setup_stacking: If True make an RPC call to determine the
1916
stacked (or not) status of the branch. If False assume the branch
1919
# We intentionally don't call the parent class's __init__, because it
1920
# will try to assign to self.tags, which is a property in this subclass.
1921
# And the parent's __init__ doesn't do much anyway.
1922
self._revision_id_to_revno_cache = None
1923
self._partial_revision_id_to_revno_cache = {}
1924
self._revision_history_cache = None
1925
self._last_revision_info_cache = None
1926
self._merge_sorted_revisions_cache = None
1927
self.bzrdir = remote_bzrdir
1928
if _client is not None:
1929
self._client = _client
1931
self._client = remote_bzrdir._client
1932
self.repository = remote_repository
1933
if real_branch is not None:
1934
self._real_branch = real_branch
1935
# Give the remote repository the matching real repo.
1936
real_repo = self._real_branch.repository
1937
if isinstance(real_repo, RemoteRepository):
1938
real_repo._ensure_real()
1939
real_repo = real_repo._real_repository
1940
self.repository._set_real_repository(real_repo)
1941
# Give the branch the remote repository to let fast-pathing happen.
1942
self._real_branch.repository = self.repository
1944
self._real_branch = None
1945
# Fill out expected attributes of branch for bzrlib API users.
1946
self.base = self.bzrdir.root_transport.base
1947
self._control_files = None
1948
self._lock_mode = None
1949
self._lock_token = None
1950
self._repo_lock_token = None
1951
self._lock_count = 0
1952
self._leave_lock = False
1953
# Setup a format: note that we cannot call _ensure_real until all the
1954
# attributes above are set: This code cannot be moved higher up in this
1957
self._format = RemoteBranchFormat()
1958
if real_branch is not None:
1959
self._format._network_name = \
1960
self._real_branch._format.network_name()
1962
self._format = format
1963
if not self._format._network_name:
1964
# Did not get from open_branchV2 - old server.
1966
self._format._network_name = \
1967
self._real_branch._format.network_name()
1968
self.tags = self._format.make_tags(self)
1969
# The base class init is not called, so we duplicate this:
1970
hooks = branch.Branch.hooks['open']
1974
self._setup_stacking()
1976
def _setup_stacking(self):
1977
# configure stacking into the remote repository, by reading it from
1980
fallback_url = self.get_stacked_on_url()
1981
except (errors.NotStacked, errors.UnstackableBranchFormat,
1982
errors.UnstackableRepositoryFormat), e:
1984
self._activate_fallback_location(fallback_url)
1986
def _get_config(self):
1987
return RemoteBranchConfig(self)
1989
def _get_real_transport(self):
1990
# if we try vfs access, return the real branch's vfs transport
1992
return self._real_branch._transport
1994
_transport = property(_get_real_transport)
1997
return "%s(%s)" % (self.__class__.__name__, self.base)
2001
def _ensure_real(self):
2002
"""Ensure that there is a _real_branch set.
2004
Used before calls to self._real_branch.
2006
if self._real_branch is None:
2007
if not vfs.vfs_enabled():
2008
raise AssertionError('smart server vfs must be enabled '
2009
'to use vfs implementation')
2010
self.bzrdir._ensure_real()
2011
self._real_branch = self.bzrdir._real_bzrdir.open_branch()
2012
if self.repository._real_repository is None:
2013
# Give the remote repository the matching real repo.
2014
real_repo = self._real_branch.repository
2015
if isinstance(real_repo, RemoteRepository):
2016
real_repo._ensure_real()
2017
real_repo = real_repo._real_repository
2018
self.repository._set_real_repository(real_repo)
2019
# Give the real branch the remote repository to let fast-pathing
2021
self._real_branch.repository = self.repository
2022
if self._lock_mode == 'r':
2023
self._real_branch.lock_read()
2024
elif self._lock_mode == 'w':
2025
self._real_branch.lock_write(token=self._lock_token)
2027
def _translate_error(self, err, **context):
2028
self.repository._translate_error(err, branch=self, **context)
2030
def _clear_cached_state(self):
2031
super(RemoteBranch, self)._clear_cached_state()
2032
if self._real_branch is not None:
2033
self._real_branch._clear_cached_state()
2035
def _clear_cached_state_of_remote_branch_only(self):
2036
"""Like _clear_cached_state, but doesn't clear the cache of
2039
This is useful when falling back to calling a method of
2040
self._real_branch that changes state. In that case the underlying
2041
branch changes, so we need to invalidate this RemoteBranch's cache of
2042
it. However, there's no need to invalidate the _real_branch's cache
2043
too, in fact doing so might harm performance.
2045
super(RemoteBranch, self)._clear_cached_state()
2048
def control_files(self):
2049
# Defer actually creating RemoteBranchLockableFiles until its needed,
2050
# because it triggers an _ensure_real that we otherwise might not need.
2051
if self._control_files is None:
2052
self._control_files = RemoteBranchLockableFiles(
2053
self.bzrdir, self._client)
2054
return self._control_files
2056
def _get_checkout_format(self):
2058
return self._real_branch._get_checkout_format()
2060
def get_physical_lock_status(self):
2061
"""See Branch.get_physical_lock_status()."""
2062
# should be an API call to the server, as branches must be lockable.
2064
return self._real_branch.get_physical_lock_status()
2066
def get_stacked_on_url(self):
2067
"""Get the URL this branch is stacked against.
2069
:raises NotStacked: If the branch is not stacked.
2070
:raises UnstackableBranchFormat: If the branch does not support
2072
:raises UnstackableRepositoryFormat: If the repository does not support
2076
# there may not be a repository yet, so we can't use
2077
# self._translate_error, so we can't use self._call either.
2078
response = self._client.call('Branch.get_stacked_on_url',
2079
self._remote_path())
2080
except errors.ErrorFromSmartServer, err:
2081
# there may not be a repository yet, so we can't call through
2082
# its _translate_error
2083
_translate_error(err, branch=self)
2084
except errors.UnknownSmartMethod, err:
2086
return self._real_branch.get_stacked_on_url()
2087
if response[0] != 'ok':
2088
raise errors.UnexpectedSmartServerResponse(response)
2091
def _vfs_get_tags_bytes(self):
2093
return self._real_branch._get_tags_bytes()
2095
def _get_tags_bytes(self):
2096
medium = self._client._medium
2097
if medium._is_remote_before((1, 13)):
2098
return self._vfs_get_tags_bytes()
2100
response = self._call('Branch.get_tags_bytes', self._remote_path())
2101
except errors.UnknownSmartMethod:
2102
medium._remember_remote_is_before((1, 13))
2103
return self._vfs_get_tags_bytes()
2106
def lock_read(self):
2107
self.repository.lock_read()
2108
if not self._lock_mode:
2109
self._lock_mode = 'r'
2110
self._lock_count = 1
2111
if self._real_branch is not None:
2112
self._real_branch.lock_read()
2114
self._lock_count += 1
2116
def _remote_lock_write(self, token):
2118
branch_token = repo_token = ''
2120
branch_token = token
2121
repo_token = self.repository.lock_write()
2122
self.repository.unlock()
2123
err_context = {'token': token}
2124
response = self._call(
2125
'Branch.lock_write', self._remote_path(), branch_token,
2126
repo_token or '', **err_context)
2127
if response[0] != 'ok':
2128
raise errors.UnexpectedSmartServerResponse(response)
2129
ok, branch_token, repo_token = response
2130
return branch_token, repo_token
2132
def lock_write(self, token=None):
2133
if not self._lock_mode:
2134
# Lock the branch and repo in one remote call.
2135
remote_tokens = self._remote_lock_write(token)
2136
self._lock_token, self._repo_lock_token = remote_tokens
2137
if not self._lock_token:
2138
raise SmartProtocolError('Remote server did not return a token!')
2139
# Tell the self.repository object that it is locked.
2140
self.repository.lock_write(
2141
self._repo_lock_token, _skip_rpc=True)
2143
if self._real_branch is not None:
2144
self._real_branch.lock_write(token=self._lock_token)
2145
if token is not None:
2146
self._leave_lock = True
2148
self._leave_lock = False
2149
self._lock_mode = 'w'
2150
self._lock_count = 1
2151
elif self._lock_mode == 'r':
2152
raise errors.ReadOnlyTransaction
2154
if token is not None:
2155
# A token was given to lock_write, and we're relocking, so
2156
# check that the given token actually matches the one we
2158
if token != self._lock_token:
2159
raise errors.TokenMismatch(token, self._lock_token)
2160
self._lock_count += 1
2161
# Re-lock the repository too.
2162
self.repository.lock_write(self._repo_lock_token)
2163
return self._lock_token or None
2165
def _set_tags_bytes(self, bytes):
2167
return self._real_branch._set_tags_bytes(bytes)
2169
def _unlock(self, branch_token, repo_token):
2170
err_context = {'token': str((branch_token, repo_token))}
2171
response = self._call(
2172
'Branch.unlock', self._remote_path(), branch_token,
2173
repo_token or '', **err_context)
2174
if response == ('ok',):
2176
raise errors.UnexpectedSmartServerResponse(response)
2180
self._lock_count -= 1
2181
if not self._lock_count:
2182
self._clear_cached_state()
2183
mode = self._lock_mode
2184
self._lock_mode = None
2185
if self._real_branch is not None:
2186
if (not self._leave_lock and mode == 'w' and
2187
self._repo_lock_token):
2188
# If this RemoteBranch will remove the physical lock
2189
# for the repository, make sure the _real_branch
2190
# doesn't do it first. (Because the _real_branch's
2191
# repository is set to be the RemoteRepository.)
2192
self._real_branch.repository.leave_lock_in_place()
2193
self._real_branch.unlock()
2195
# Only write-locked branched need to make a remote method
2196
# call to perform the unlock.
2198
if not self._lock_token:
2199
raise AssertionError('Locked, but no token!')
2200
branch_token = self._lock_token
2201
repo_token = self._repo_lock_token
2202
self._lock_token = None
2203
self._repo_lock_token = None
2204
if not self._leave_lock:
2205
self._unlock(branch_token, repo_token)
2207
self.repository.unlock()
2209
def break_lock(self):
2211
return self._real_branch.break_lock()
2213
def leave_lock_in_place(self):
2214
if not self._lock_token:
2215
raise NotImplementedError(self.leave_lock_in_place)
2216
self._leave_lock = True
2218
def dont_leave_lock_in_place(self):
2219
if not self._lock_token:
2220
raise NotImplementedError(self.dont_leave_lock_in_place)
2221
self._leave_lock = False
2223
def _last_revision_info(self):
2224
response = self._call('Branch.last_revision_info', self._remote_path())
2225
if response[0] != 'ok':
2226
raise SmartProtocolError('unexpected response code %s' % (response,))
2227
revno = int(response[1])
2228
last_revision = response[2]
2229
return (revno, last_revision)
2231
def _gen_revision_history(self):
2232
"""See Branch._gen_revision_history()."""
2233
response_tuple, response_handler = self._call_expecting_body(
2234
'Branch.revision_history', self._remote_path())
2235
if response_tuple[0] != 'ok':
2236
raise errors.UnexpectedSmartServerResponse(response_tuple)
2237
result = response_handler.read_body_bytes().split('\x00')
2242
def _remote_path(self):
2243
return self.bzrdir._path_for_remote_call(self._client)
2245
def _set_last_revision_descendant(self, revision_id, other_branch,
2246
allow_diverged=False, allow_overwrite_descendant=False):
2247
# This performs additional work to meet the hook contract; while its
2248
# undesirable, we have to synthesise the revno to call the hook, and
2249
# not calling the hook is worse as it means changes can't be prevented.
2250
# Having calculated this though, we can't just call into
2251
# set_last_revision_info as a simple call, because there is a set_rh
2252
# hook that some folk may still be using.
2253
old_revno, old_revid = self.last_revision_info()
2254
history = self._lefthand_history(revision_id)
2255
self._run_pre_change_branch_tip_hooks(len(history), revision_id)
2256
err_context = {'other_branch': other_branch}
2257
response = self._call('Branch.set_last_revision_ex',
2258
self._remote_path(), self._lock_token, self._repo_lock_token,
2259
revision_id, int(allow_diverged), int(allow_overwrite_descendant),
2261
self._clear_cached_state()
2262
if len(response) != 3 and response[0] != 'ok':
2263
raise errors.UnexpectedSmartServerResponse(response)
2264
new_revno, new_revision_id = response[1:]
2265
self._last_revision_info_cache = new_revno, new_revision_id
2266
self._run_post_change_branch_tip_hooks(old_revno, old_revid)
2267
if self._real_branch is not None:
2268
cache = new_revno, new_revision_id
2269
self._real_branch._last_revision_info_cache = cache
2271
def _set_last_revision(self, revision_id):
2272
old_revno, old_revid = self.last_revision_info()
2273
# This performs additional work to meet the hook contract; while its
2274
# undesirable, we have to synthesise the revno to call the hook, and
2275
# not calling the hook is worse as it means changes can't be prevented.
2276
# Having calculated this though, we can't just call into
2277
# set_last_revision_info as a simple call, because there is a set_rh
2278
# hook that some folk may still be using.
2279
history = self._lefthand_history(revision_id)
2280
self._run_pre_change_branch_tip_hooks(len(history), revision_id)
2281
self._clear_cached_state()
2282
response = self._call('Branch.set_last_revision',
2283
self._remote_path(), self._lock_token, self._repo_lock_token,
2285
if response != ('ok',):
2286
raise errors.UnexpectedSmartServerResponse(response)
2287
self._run_post_change_branch_tip_hooks(old_revno, old_revid)
2290
def set_revision_history(self, rev_history):
2291
# Send just the tip revision of the history; the server will generate
2292
# the full history from that. If the revision doesn't exist in this
2293
# branch, NoSuchRevision will be raised.
2294
if rev_history == []:
2297
rev_id = rev_history[-1]
2298
self._set_last_revision(rev_id)
2299
for hook in branch.Branch.hooks['set_rh']:
2300
hook(self, rev_history)
2301
self._cache_revision_history(rev_history)
2303
def _get_parent_location(self):
2304
medium = self._client._medium
2305
if medium._is_remote_before((1, 13)):
2306
return self._vfs_get_parent_location()
2308
response = self._call('Branch.get_parent', self._remote_path())
2309
except errors.UnknownSmartMethod:
2310
medium._remember_remote_is_before((1, 13))
2311
return self._vfs_get_parent_location()
2312
if len(response) != 1:
2313
raise errors.UnexpectedSmartServerResponse(response)
2314
parent_location = response[0]
2315
if parent_location == '':
2317
return parent_location
2319
def _vfs_get_parent_location(self):
2321
return self._real_branch._get_parent_location()
2323
def _set_parent_location(self, url):
2324
medium = self._client._medium
2325
if medium._is_remote_before((1, 15)):
2326
return self._vfs_set_parent_location(url)
2328
call_url = url or ''
2329
if type(call_url) is not str:
2330
raise AssertionError('url must be a str or None (%s)' % url)
2331
response = self._call('Branch.set_parent_location',
2332
self._remote_path(), self._lock_token, self._repo_lock_token,
2334
except errors.UnknownSmartMethod:
2335
medium._remember_remote_is_before((1, 15))
2336
return self._vfs_set_parent_location(url)
2338
raise errors.UnexpectedSmartServerResponse(response)
2340
def _vfs_set_parent_location(self, url):
2342
return self._real_branch._set_parent_location(url)
2345
def pull(self, source, overwrite=False, stop_revision=None,
2347
self._clear_cached_state_of_remote_branch_only()
2349
return self._real_branch.pull(
2350
source, overwrite=overwrite, stop_revision=stop_revision,
2351
_override_hook_target=self, **kwargs)
2354
def push(self, target, overwrite=False, stop_revision=None):
2356
return self._real_branch.push(
2357
target, overwrite=overwrite, stop_revision=stop_revision,
2358
_override_hook_source_branch=self)
2360
def is_locked(self):
2361
return self._lock_count >= 1
2364
def revision_id_to_revno(self, revision_id):
2366
return self._real_branch.revision_id_to_revno(revision_id)
2369
def set_last_revision_info(self, revno, revision_id):
2370
# XXX: These should be returned by the set_last_revision_info verb
2371
old_revno, old_revid = self.last_revision_info()
2372
self._run_pre_change_branch_tip_hooks(revno, revision_id)
2373
revision_id = ensure_null(revision_id)
2375
response = self._call('Branch.set_last_revision_info',
2376
self._remote_path(), self._lock_token, self._repo_lock_token,
2377
str(revno), revision_id)
2378
except errors.UnknownSmartMethod:
2380
self._clear_cached_state_of_remote_branch_only()
2381
self._real_branch.set_last_revision_info(revno, revision_id)
2382
self._last_revision_info_cache = revno, revision_id
2384
if response == ('ok',):
2385
self._clear_cached_state()
2386
self._last_revision_info_cache = revno, revision_id
2387
self._run_post_change_branch_tip_hooks(old_revno, old_revid)
2388
# Update the _real_branch's cache too.
2389
if self._real_branch is not None:
2390
cache = self._last_revision_info_cache
2391
self._real_branch._last_revision_info_cache = cache
2393
raise errors.UnexpectedSmartServerResponse(response)
2396
def generate_revision_history(self, revision_id, last_rev=None,
2398
medium = self._client._medium
2399
if not medium._is_remote_before((1, 6)):
2400
# Use a smart method for 1.6 and above servers
2402
self._set_last_revision_descendant(revision_id, other_branch,
2403
allow_diverged=True, allow_overwrite_descendant=True)
2405
except errors.UnknownSmartMethod:
2406
medium._remember_remote_is_before((1, 6))
2407
self._clear_cached_state_of_remote_branch_only()
2408
self.set_revision_history(self._lefthand_history(revision_id,
2409
last_rev=last_rev,other_branch=other_branch))
2411
def set_push_location(self, location):
2413
return self._real_branch.set_push_location(location)
2416
class RemoteConfig(object):
2417
"""A Config that reads and writes from smart verbs.
2419
It is a low-level object that considers config data to be name/value pairs
2420
that may be associated with a section. Assigning meaning to the these
2421
values is done at higher levels like bzrlib.config.TreeConfig.
2424
def get_option(self, name, section=None, default=None):
2425
"""Return the value associated with a named option.
2427
:param name: The name of the value
2428
:param section: The section the option is in (if any)
2429
:param default: The value to return if the value is not set
2430
:return: The value or default value
2433
configobj = self._get_configobj()
2435
section_obj = configobj
2438
section_obj = configobj[section]
2441
return section_obj.get(name, default)
2442
except errors.UnknownSmartMethod:
2443
return self._vfs_get_option(name, section, default)
2445
def _response_to_configobj(self, response):
2446
if len(response[0]) and response[0][0] != 'ok':
2447
raise errors.UnexpectedSmartServerResponse(response)
2448
lines = response[1].read_body_bytes().splitlines()
2449
return config.ConfigObj(lines, encoding='utf-8')
2452
class RemoteBranchConfig(RemoteConfig):
2453
"""A RemoteConfig for Branches."""
2455
def __init__(self, branch):
2456
self._branch = branch
2458
def _get_configobj(self):
2459
path = self._branch._remote_path()
2460
response = self._branch._client.call_expecting_body(
2461
'Branch.get_config_file', path)
2462
return self._response_to_configobj(response)
2464
def set_option(self, value, name, section=None):
2465
"""Set the value associated with a named option.
2467
:param value: The value to set
2468
:param name: The name of the value to set
2469
:param section: The section the option is in (if any)
2471
medium = self._branch._client._medium
2472
if medium._is_remote_before((1, 14)):
2473
return self._vfs_set_option(value, name, section)
2475
path = self._branch._remote_path()
2476
response = self._branch._client.call('Branch.set_config_option',
2477
path, self._branch._lock_token, self._branch._repo_lock_token,
2478
value.encode('utf8'), name, section or '')
2479
except errors.UnknownSmartMethod:
2480
medium._remember_remote_is_before((1, 14))
2481
return self._vfs_set_option(value, name, section)
2483
raise errors.UnexpectedSmartServerResponse(response)
2485
def _real_object(self):
2486
self._branch._ensure_real()
2487
return self._branch._real_branch
2489
def _vfs_set_option(self, value, name, section=None):
2490
return self._real_object()._get_config().set_option(
2491
value, name, section)
2494
class RemoteBzrDirConfig(RemoteConfig):
2495
"""A RemoteConfig for BzrDirs."""
2497
def __init__(self, bzrdir):
2498
self._bzrdir = bzrdir
2500
def _get_configobj(self):
2501
medium = self._bzrdir._client._medium
2502
verb = 'BzrDir.get_config_file'
2503
if medium._is_remote_before((1, 15)):
2504
raise errors.UnknownSmartMethod(verb)
2505
path = self._bzrdir._path_for_remote_call(self._bzrdir._client)
2506
response = self._bzrdir._call_expecting_body(
2508
return self._response_to_configobj(response)
2510
def _vfs_get_option(self, name, section, default):
2511
return self._real_object()._get_config().get_option(
2512
name, section, default)
2514
def set_option(self, value, name, section=None):
2515
"""Set the value associated with a named option.
2517
:param value: The value to set
2518
:param name: The name of the value to set
2519
:param section: The section the option is in (if any)
2521
return self._real_object()._get_config().set_option(
2522
value, name, section)
2524
def _real_object(self):
2525
self._bzrdir._ensure_real()
2526
return self._bzrdir._real_bzrdir
2530
def _extract_tar(tar, to_dir):
2531
"""Extract all the contents of a tarfile object.
2533
A replacement for extractall, which is not present in python2.4
2536
tar.extract(tarinfo, to_dir)
2539
def _translate_error(err, **context):
2540
"""Translate an ErrorFromSmartServer into a more useful error.
2542
Possible context keys:
2550
If the error from the server doesn't match a known pattern, then
2551
UnknownErrorFromSmartServer is raised.
2555
return context[name]
2556
except KeyError, key_err:
2557
mutter('Missing key %r in context %r', key_err.args[0], context)
2560
"""Get the path from the context if present, otherwise use first error
2564
return context['path']
2565
except KeyError, key_err:
2567
return err.error_args[0]
2568
except IndexError, idx_err:
2570
'Missing key %r in context %r', key_err.args[0], context)
2573
if err.error_verb == 'NoSuchRevision':
2574
raise NoSuchRevision(find('branch'), err.error_args[0])
2575
elif err.error_verb == 'nosuchrevision':
2576
raise NoSuchRevision(find('repository'), err.error_args[0])
2577
elif err.error_tuple == ('nobranch',):
2578
raise errors.NotBranchError(path=find('bzrdir').root_transport.base)
2579
elif err.error_verb == 'norepository':
2580
raise errors.NoRepositoryPresent(find('bzrdir'))
2581
elif err.error_verb == 'LockContention':
2582
raise errors.LockContention('(remote lock)')
2583
elif err.error_verb == 'UnlockableTransport':
2584
raise errors.UnlockableTransport(find('bzrdir').root_transport)
2585
elif err.error_verb == 'LockFailed':
2586
raise errors.LockFailed(err.error_args[0], err.error_args[1])
2587
elif err.error_verb == 'TokenMismatch':
2588
raise errors.TokenMismatch(find('token'), '(remote token)')
2589
elif err.error_verb == 'Diverged':
2590
raise errors.DivergedBranches(find('branch'), find('other_branch'))
2591
elif err.error_verb == 'TipChangeRejected':
2592
raise errors.TipChangeRejected(err.error_args[0].decode('utf8'))
2593
elif err.error_verb == 'UnstackableBranchFormat':
2594
raise errors.UnstackableBranchFormat(*err.error_args)
2595
elif err.error_verb == 'UnstackableRepositoryFormat':
2596
raise errors.UnstackableRepositoryFormat(*err.error_args)
2597
elif err.error_verb == 'NotStacked':
2598
raise errors.NotStacked(branch=find('branch'))
2599
elif err.error_verb == 'PermissionDenied':
2601
if len(err.error_args) >= 2:
2602
extra = err.error_args[1]
2605
raise errors.PermissionDenied(path, extra=extra)
2606
elif err.error_verb == 'ReadError':
2608
raise errors.ReadError(path)
2609
elif err.error_verb == 'NoSuchFile':
2611
raise errors.NoSuchFile(path)
2612
elif err.error_verb == 'FileExists':
2613
raise errors.FileExists(err.error_args[0])
2614
elif err.error_verb == 'DirectoryNotEmpty':
2615
raise errors.DirectoryNotEmpty(err.error_args[0])
2616
elif err.error_verb == 'ShortReadvError':
2617
args = err.error_args
2618
raise errors.ShortReadvError(
2619
args[0], int(args[1]), int(args[2]), int(args[3]))
2620
elif err.error_verb in ('UnicodeEncodeError', 'UnicodeDecodeError'):
2621
encoding = str(err.error_args[0]) # encoding must always be a string
2622
val = err.error_args[1]
2623
start = int(err.error_args[2])
2624
end = int(err.error_args[3])
2625
reason = str(err.error_args[4]) # reason must always be a string
2626
if val.startswith('u:'):
2627
val = val[2:].decode('utf-8')
2628
elif val.startswith('s:'):
2629
val = val[2:].decode('base64')
2630
if err.error_verb == 'UnicodeDecodeError':
2631
raise UnicodeDecodeError(encoding, val, start, end, reason)
2632
elif err.error_verb == 'UnicodeEncodeError':
2633
raise UnicodeEncodeError(encoding, val, start, end, reason)
2634
elif err.error_verb == 'ReadOnlyError':
2635
raise errors.TransportNotPossible('readonly transport')
2636
raise errors.UnknownErrorFromSmartServer(err)
added
removed
bzrlib/remote.py
