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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the Free Software
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# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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# 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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from cStringIO import StringIO
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from bzrlib import (
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repository as _mod_repository,
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revision as _mod_revision,
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from bzrlib.branch import BranchReferenceFormat, BranchWriteLockResult
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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, only_raises
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from bzrlib.errors import (
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from bzrlib.config import BranchConfig, TreeConfig
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from bzrlib.decorators import needs_read_lock, needs_write_lock
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from bzrlib.errors import NoSuchRevision
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from bzrlib.lockable_files import LockableFiles
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from bzrlib.pack import ContainerPushParser
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from bzrlib.smart import client, vfs
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from bzrlib.symbol_versioning 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.repository import RepositoryWriteLockResult
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from bzrlib.revision import 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(self, method, args, body_bytes, **err_context):
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return self._client.call_with_body_bytes(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 _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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class RemoteBzrDir(BzrDir):
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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, _force_probe=False):
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def __init__(self, transport, _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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use of a real bzrdir.
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BzrDir.__init__(self, transport, format)
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BzrDir.__init__(self, transport, RemoteBzrDirFormat())
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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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self._has_working_tree = 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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if _client is None:
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medium = transport.get_smart_medium()
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self._client = client._SmartClient(medium)
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self._shared_medium = transport.get_shared_medium()
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self._client = client._SmartClient(self._shared_medium)
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self._client = _client
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return '%s(%r)' % (self.__class__.__name__, self._client)
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def _probe_bzrdir(self):
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medium = self._client._medium
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self._shared_medium = None
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path = self._path_for_remote_call(self._client)
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if medium._is_remote_before((2, 1)):
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self._rpc_open_2_1(path)
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except errors.UnknownSmartMethod:
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medium._remember_remote_is_before((2, 1))
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def _rpc_open_2_1(self, path):
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response = self._call('BzrDir.open_2.1', path)
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if response == ('no',):
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raise errors.NotBranchError(path=self.root_transport.base)
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elif response[0] == 'yes':
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if response[1] == 'yes':
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self._has_working_tree = True
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elif response[1] == 'no':
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self._has_working_tree = False
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raise errors.UnexpectedSmartServerResponse(response)
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raise errors.UnexpectedSmartServerResponse(response)
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def _rpc_open(self, path):
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response = self._call('BzrDir.open', path)
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response = self._client.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=self.root_transport.base)
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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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if 'hpssvfs' in debug.debug_flags:
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warning('VFS BzrDir access triggered\n%s',
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''.join(traceback.format_stack()))
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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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self._real_bzrdir.create_repository(shared=shared)
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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._ensure_real()
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self._real_bzrdir.destroy_repository()
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def create_branch(self, name=None):
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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 create_branch(self):
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real_branch = self._real_bzrdir.create_branch()
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return RemoteBranch(self, self.find_repository(), real_branch)
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def destroy_branch(self, name=None):
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def destroy_branch(self):
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"""See BzrDir.destroy_branch"""
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self._ensure_real()
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self._real_bzrdir.destroy_branch(name=name)
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self._next_open_branch_result = None
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self._real_bzrdir.destroy_branch()
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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 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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path = self._path_for_remote_call(self._client)
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response = self._client.call('BzrDir.open_branch', path)
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if response[0] == 'ok':
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if response[1] == '':
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# branch at this location.
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# a branch reference, use the existing BranchReference logic.
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elif response == ('nobranch',):
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raise errors.NotBranchError(path=self.root_transport.base)
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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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('BzrDir.open_branchV3', (2, 1)),
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('BzrDir.open_branchV2', (1, 13)),
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('BzrDir.open_branch', None),
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for verb, required_version in candidate_calls:
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if required_version and medium._is_remote_before(required_version):
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response = self._call(verb, path)
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except errors.UnknownSmartMethod:
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if required_version is None:
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medium._remember_remote_is_before(required_version)
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if verb == 'BzrDir.open_branch':
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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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if response[0] not in ('ref', 'branch'):
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raise errors.UnexpectedSmartServerResponse(response)
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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, name=None, unsupported=False,
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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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def open_branch(self, _unsupported=False):
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assert _unsupported == False, 'unsupported flag support not implemented yet.'
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reference_url = self.get_branch_reference()
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if reference_url is None:
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# branch at this location.
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return RemoteBranch(self, self.find_repository())
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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, name=name, _found=True,
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location=response[1], 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, name=name)
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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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return format.open(self, _found=True, location=reference_url)
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def open_repository(self):
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path = self._path_for_remote_call(self._client)
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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':
364
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):
371
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)
377
except errors.UnknownSmartMethod:
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medium._remember_remote_is_before((1, 13))
380
if response[0] != 'ok':
381
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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response = self._client.call(verb, path)
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if (response == ('error', "Generic bzr smart protocol error: "
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"bad request '%s'" % verb) or
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response == ('error', "Generic bzr smart protocol error: "
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"bad request u'%s'" % verb)):
158
verb = 'BzrDir.find_repository'
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response = self._client.call(verb, path)
160
assert response[0] in ('ok', 'norepository'), \
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'unexpected response code %s' % (response,)
162
if response[0] == 'norepository':
163
raise errors.NoRepositoryPresent(self)
164
if verb == 'BzrDir.find_repository':
165
# servers that don't support the V2 method don't support external
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response = response + ('no', )
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assert len(response) == 5, 'incorrect response length %s' % (response,)
400
169
if response[1] == '':
401
# repo is at this dir.
402
format = response_tuple_to_repo_format(response[2:])
403
# Used to support creating a real format instance when needed.
404
format._creating_bzrdir = self
405
remote_repo = RemoteRepository(self, format)
406
format._creating_repo = remote_repo
407
if real_repo is not None:
408
remote_repo._set_real_repository(real_repo)
170
format = RemoteRepositoryFormat()
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format.rich_root_data = (response[2] == 'yes')
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format.supports_tree_reference = (response[3] == 'yes')
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# No wire format to check this yet.
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format.supports_external_lookups = (response[4] == 'yes')
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return RemoteRepository(self, format)
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177
raise errors.NoRepositoryPresent(self)
413
def has_workingtree(self):
414
if self._has_working_tree is None:
416
self._has_working_tree = self._real_bzrdir.has_workingtree()
417
return self._has_working_tree
419
179
def open_workingtree(self, recommend_upgrade=True):
420
if self.has_workingtree():
181
if self._real_bzrdir.has_workingtree():
421
182
raise errors.NotLocalUrl(self.root_transport)
423
184
raise errors.NoWorkingTree(self.root_transport.base)
470
224
the attributes rich_root_data and supports_tree_reference are set
471
225
on a per instance basis, and are not set (and should not be) at
474
:ivar _custom_format: If set, a specific concrete repository format that
475
will be used when initializing a repository with this
476
RemoteRepositoryFormat.
477
:ivar _creating_repo: If set, the repository object that this
478
RemoteRepositoryFormat was created for: it can be called into
479
to obtain data like the network name.
482
_matchingbzrdir = RemoteBzrDirFormat()
485
repository.RepositoryFormat.__init__(self)
486
self._custom_format = None
487
self._network_name = None
488
self._creating_bzrdir = None
489
self._supports_chks = None
490
self._supports_external_lookups = None
491
self._supports_tree_reference = None
492
self._rich_root_data = None
495
return "%s(_network_name=%r)" % (self.__class__.__name__,
499
def fast_deltas(self):
501
return self._custom_format.fast_deltas
504
def rich_root_data(self):
505
if self._rich_root_data is None:
507
self._rich_root_data = self._custom_format.rich_root_data
508
return self._rich_root_data
511
def supports_chks(self):
512
if self._supports_chks is None:
514
self._supports_chks = self._custom_format.supports_chks
515
return self._supports_chks
518
def supports_external_lookups(self):
519
if self._supports_external_lookups is None:
521
self._supports_external_lookups = \
522
self._custom_format.supports_external_lookups
523
return self._supports_external_lookups
526
def supports_tree_reference(self):
527
if self._supports_tree_reference is None:
529
self._supports_tree_reference = \
530
self._custom_format.supports_tree_reference
531
return self._supports_tree_reference
533
def _vfs_initialize(self, a_bzrdir, shared):
534
"""Helper for common code in initialize."""
535
if self._custom_format:
536
# Custom format requested
537
result = self._custom_format.initialize(a_bzrdir, shared=shared)
538
elif self._creating_bzrdir is not None:
539
# Use the format that the repository we were created to back
541
prior_repo = self._creating_bzrdir.open_repository()
542
prior_repo._ensure_real()
543
result = prior_repo._real_repository._format.initialize(
544
a_bzrdir, shared=shared)
546
# assume that a_bzr is a RemoteBzrDir but the smart server didn't
547
# support remote initialization.
548
# We delegate to a real object at this point (as RemoteBzrDir
549
# delegate to the repository format which would lead to infinite
550
# recursion if we just called a_bzrdir.create_repository.
551
a_bzrdir._ensure_real()
552
result = a_bzrdir._real_bzrdir.create_repository(shared=shared)
553
if not isinstance(result, RemoteRepository):
554
return self.open(a_bzrdir)
229
_matchingbzrdir = RemoteBzrDirFormat
558
231
def initialize(self, a_bzrdir, shared=False):
559
# Being asked to create on a non RemoteBzrDir:
560
if not isinstance(a_bzrdir, RemoteBzrDir):
561
return self._vfs_initialize(a_bzrdir, shared)
562
medium = a_bzrdir._client._medium
563
if medium._is_remote_before((1, 13)):
564
return self._vfs_initialize(a_bzrdir, shared)
565
# Creating on a remote bzr dir.
566
# 1) get the network name to use.
567
if self._custom_format:
568
network_name = self._custom_format.network_name()
569
elif self._network_name:
570
network_name = self._network_name
572
# Select the current bzrlib default and ask for that.
573
reference_bzrdir_format = bzrdir.format_registry.get('default')()
574
reference_format = reference_bzrdir_format.repository_format
575
network_name = reference_format.network_name()
576
# 2) try direct creation via RPC
577
path = a_bzrdir._path_for_remote_call(a_bzrdir._client)
578
verb = 'BzrDir.create_repository'
584
response = a_bzrdir._call(verb, path, network_name, shared_str)
585
except errors.UnknownSmartMethod:
586
# Fallback - use vfs methods
587
medium._remember_remote_is_before((1, 13))
588
return self._vfs_initialize(a_bzrdir, shared)
590
# Turn the response into a RemoteRepository object.
591
format = response_tuple_to_repo_format(response[1:])
592
# Used to support creating a real format instance when needed.
593
format._creating_bzrdir = a_bzrdir
594
remote_repo = RemoteRepository(a_bzrdir, format)
595
format._creating_repo = remote_repo
232
assert isinstance(a_bzrdir, RemoteBzrDir), \
233
'%r is not a RemoteBzrDir' % (a_bzrdir,)
234
return a_bzrdir.create_repository(shared=shared)
598
236
def open(self, a_bzrdir):
599
if not isinstance(a_bzrdir, RemoteBzrDir):
600
raise AssertionError('%r is not a RemoteBzrDir' % (a_bzrdir,))
237
assert isinstance(a_bzrdir, RemoteBzrDir)
601
238
return a_bzrdir.open_repository()
603
def _ensure_real(self):
604
if self._custom_format is None:
605
self._custom_format = repository.network_format_registry.get(
609
def _fetch_order(self):
611
return self._custom_format._fetch_order
614
def _fetch_uses_deltas(self):
616
return self._custom_format._fetch_uses_deltas
619
def _fetch_reconcile(self):
621
return self._custom_format._fetch_reconcile
623
240
def get_format_description(self):
625
return 'Remote: ' + self._custom_format.get_format_description()
241
return 'bzr remote repository'
627
243
def __eq__(self, other):
628
return self.__class__ is other.__class__
630
def network_name(self):
631
if self._network_name:
632
return self._network_name
633
self._creating_repo._ensure_real()
634
return self._creating_repo._real_repository._format.network_name()
637
def pack_compresses(self):
639
return self._custom_format.pack_compresses
642
def _serializer(self):
644
return self._custom_format._serializer
647
class RemoteRepository(_RpcHelper, lock._RelockDebugMixin,
648
bzrdir.ControlComponent):
244
return self.__class__ == other.__class__
246
def check_conversion_target(self, target_format):
247
if self.rich_root_data and not target_format.rich_root_data:
248
raise errors.BadConversionTarget(
249
'Does not support rich root data.', target_format)
250
if (self.supports_tree_reference and
251
not getattr(target_format, 'supports_tree_reference', False)):
252
raise errors.BadConversionTarget(
253
'Does not support nested trees', target_format)
256
class RemoteRepository(object):
649
257
"""Repository accessed over rpc.
651
259
For the moment most operations are performed using local transport-backed
745
326
self._ensure_real()
746
327
return self._real_repository.commit_write_group()
748
def resume_write_group(self, tokens):
750
return self._real_repository.resume_write_group(tokens)
752
def suspend_write_group(self):
754
return self._real_repository.suspend_write_group()
756
def get_missing_parent_inventories(self, check_for_missing_texts=True):
758
return self._real_repository.get_missing_parent_inventories(
759
check_for_missing_texts=check_for_missing_texts)
761
def _get_rev_id_for_revno_vfs(self, revno, known_pair):
763
return self._real_repository.get_rev_id_for_revno(
766
def get_rev_id_for_revno(self, revno, known_pair):
767
"""See Repository.get_rev_id_for_revno."""
768
path = self.bzrdir._path_for_remote_call(self._client)
770
if self._client._medium._is_remote_before((1, 17)):
771
return self._get_rev_id_for_revno_vfs(revno, known_pair)
772
response = self._call(
773
'Repository.get_rev_id_for_revno', path, revno, known_pair)
774
except errors.UnknownSmartMethod:
775
self._client._medium._remember_remote_is_before((1, 17))
776
return self._get_rev_id_for_revno_vfs(revno, known_pair)
777
if response[0] == 'ok':
778
return True, response[1]
779
elif response[0] == 'history-incomplete':
780
known_pair = response[1:3]
781
for fallback in self._fallback_repositories:
782
found, result = fallback.get_rev_id_for_revno(revno, known_pair)
787
# Not found in any fallbacks
788
return False, known_pair
790
raise errors.UnexpectedSmartServerResponse(response)
792
329
def _ensure_real(self):
793
330
"""Ensure that there is a _real_repository set.
795
332
Used before calls to self._real_repository.
797
Note that _ensure_real causes many roundtrips to the server which are
798
not desirable, and prevents the use of smart one-roundtrip RPC's to
799
perform complex operations (such as accessing parent data, streaming
800
revisions etc). Adding calls to _ensure_real should only be done when
801
bringing up new functionality, adding fallbacks for smart methods that
802
require a fallback path, and never to replace an existing smart method
803
invocation. If in doubt chat to the bzr network team.
805
if self._real_repository is None:
806
if 'hpssvfs' in debug.debug_flags:
808
warning('VFS Repository access triggered\n%s',
809
''.join(traceback.format_stack()))
810
self._unstacked_provider.missing_keys.clear()
334
if not self._real_repository:
811
335
self.bzrdir._ensure_real()
812
self._set_real_repository(
813
self.bzrdir._real_bzrdir.open_repository())
815
def _translate_error(self, err, **context):
816
self.bzrdir._translate_error(err, repository=self, **context)
336
#self._real_repository = self.bzrdir._real_bzrdir.open_repository()
337
self._set_real_repository(self.bzrdir._real_bzrdir.open_repository())
818
339
def find_text_key_references(self):
819
340
"""Find the text key references within the repository.
840
361
self._ensure_real()
841
362
return self._real_repository._generate_text_key_index()
843
def _get_revision_graph(self, revision_id):
844
"""Private method for using with old (< 1.2) servers to fallback."""
364
def get_revision_graph(self, revision_id=None):
365
"""See Repository.get_revision_graph()."""
845
366
if revision_id is None:
847
368
elif revision.is_null(revision_id):
850
371
path = self.bzrdir._path_for_remote_call(self._client)
851
response = self._call_expecting_body(
372
assert type(revision_id) is str
373
response = self._client.call_expecting_body(
852
374
'Repository.get_revision_graph', path, revision_id)
853
response_tuple, response_handler = response
854
if response_tuple[0] != 'ok':
855
raise errors.UnexpectedSmartServerResponse(response_tuple)
856
coded = response_handler.read_body_bytes()
858
# no revisions in this repository!
860
lines = coded.split('\n')
863
d = tuple(line.split())
864
revision_graph[d[0]] = d[1:]
866
return revision_graph
869
"""See Repository._get_sink()."""
870
return RemoteStreamSink(self)
872
def _get_source(self, to_format):
873
"""Return a source for streaming from this repository."""
874
return RemoteStreamSource(self, to_format)
375
if response[0][0] not in ['ok', 'nosuchrevision']:
376
raise errors.UnexpectedSmartServerResponse(response[0])
377
if response[0][0] == 'ok':
378
coded = response[1].read_body_bytes()
380
# no revisions in this repository!
382
lines = coded.split('\n')
385
d = tuple(line.split())
386
revision_graph[d[0]] = d[1:]
388
return revision_graph
390
response_body = response[1].read_body_bytes()
391
assert response_body == ''
392
raise NoSuchRevision(self, revision_id)
877
394
def has_revision(self, revision_id):
878
"""True if this repository has a copy of the revision."""
879
# Copy of bzrlib.repository.Repository.has_revision
880
return revision_id in self.has_revisions((revision_id,))
395
"""See Repository.has_revision()."""
396
if revision_id == NULL_REVISION:
397
# The null revision is always present.
399
path = self.bzrdir._path_for_remote_call(self._client)
400
response = self._client.call('Repository.has_revision', path, revision_id)
401
assert response[0] in ('yes', 'no'), 'unexpected response code %s' % (response,)
402
return response[0] == 'yes'
883
404
def has_revisions(self, revision_ids):
884
"""Probe to find out the presence of multiple revisions.
886
:param revision_ids: An iterable of revision_ids.
887
:return: A set of the revision_ids that were present.
889
# Copy of bzrlib.repository.Repository.has_revisions
890
parent_map = self.get_parent_map(revision_ids)
891
result = set(parent_map)
892
if _mod_revision.NULL_REVISION in revision_ids:
893
result.add(_mod_revision.NULL_REVISION)
405
"""See Repository.has_revisions()."""
407
for revision_id in revision_ids:
408
if self.has_revision(revision_id):
409
result.add(revision_id)
896
def _has_same_fallbacks(self, other_repo):
897
"""Returns true if the repositories have the same fallbacks."""
898
# XXX: copied from Repository; it should be unified into a base class
899
# <https://bugs.edge.launchpad.net/bzr/+bug/401622>
900
my_fb = self._fallback_repositories
901
other_fb = other_repo._fallback_repositories
902
if len(my_fb) != len(other_fb):
904
for f, g in zip(my_fb, other_fb):
905
if not f.has_same_location(g):
909
412
def has_same_location(self, other):
910
# TODO: Move to RepositoryBase and unify with the regular Repository
911
# one; unfortunately the tests rely on slightly different behaviour at
912
# present -- mbp 20090710
913
return (self.__class__ is other.__class__ and
413
return (self.__class__ == other.__class__ and
914
414
self.bzrdir.transport.base == other.bzrdir.transport.base)
916
416
def get_graph(self, other_repository=None):
917
417
"""Return the graph for this repository format"""
918
parents_provider = self._make_parents_provider(other_repository)
418
parents_provider = self
419
if (other_repository is not None and
420
other_repository.bzrdir.transport.base !=
421
self.bzrdir.transport.base):
422
parents_provider = graph._StackedParentsProvider(
423
[parents_provider, other_repository._make_parents_provider()])
919
424
return graph.Graph(parents_provider)
922
def get_known_graph_ancestry(self, revision_ids):
923
"""Return the known graph for a set of revision ids and their ancestors.
925
st = static_tuple.StaticTuple
926
revision_keys = [st(r_id).intern() for r_id in revision_ids]
927
known_graph = self.revisions.get_known_graph_ancestry(revision_keys)
928
return graph.GraphThunkIdsToKeys(known_graph)
930
426
def gather_stats(self, revid=None, committers=None):
931
427
"""See Repository.gather_stats()."""
932
428
path = self.bzrdir._path_for_remote_call(self._client)
984
480
def is_shared(self):
985
481
"""See Repository.is_shared()."""
986
482
path = self.bzrdir._path_for_remote_call(self._client)
987
response = self._call('Repository.is_shared', path)
988
if response[0] not in ('yes', 'no'):
989
raise SmartProtocolError('unexpected response code %s' % (response,))
483
response = self._client.call('Repository.is_shared', path)
484
assert response[0] in ('yes', 'no'), 'unexpected response code %s' % (response,)
990
485
return response[0] == 'yes'
992
487
def is_write_locked(self):
993
488
return self._lock_mode == 'w'
995
def _warn_if_deprecated(self, branch=None):
996
# If we have a real repository, the check will be done there, if we
997
# don't the check will be done remotely.
1000
490
def lock_read(self):
1001
"""Lock the repository for read operations.
1003
:return: An object with an unlock method which will release the lock
1006
491
# wrong eventually - want a local lock cache context
1007
492
if not self._lock_mode:
1008
self._note_lock('r')
1009
493
self._lock_mode = 'r'
1010
494
self._lock_count = 1
1011
self._unstacked_provider.enable_cache(cache_misses=True)
495
self._parents_map = {}
496
if 'hpss' in debug.debug_flags:
497
self._requested_parents = set()
1012
498
if self._real_repository is not None:
1013
499
self._real_repository.lock_read()
1014
for repo in self._fallback_repositories:
1017
501
self._lock_count += 1
1020
503
def _remote_lock_write(self, token):
1021
504
path = self.bzrdir._path_for_remote_call(self._client)
1022
505
if token is None:
1024
err_context = {'token': token}
1025
response = self._call('Repository.lock_write', path, token,
507
response = self._client.call('Repository.lock_write', path, token)
1027
508
if response[0] == 'ok':
1028
509
ok, token = response
511
elif response[0] == 'LockContention':
512
raise errors.LockContention('(remote lock)')
513
elif response[0] == 'UnlockableTransport':
514
raise errors.UnlockableTransport(self.bzrdir.root_transport)
515
elif response[0] == 'LockFailed':
516
raise errors.LockFailed(response[1], response[2])
1031
518
raise errors.UnexpectedSmartServerResponse(response)
1033
def lock_write(self, token=None, _skip_rpc=False):
520
def lock_write(self, token=None):
1034
521
if not self._lock_mode:
1035
self._note_lock('w')
1037
if self._lock_token is not None:
1038
if token != self._lock_token:
1039
raise errors.TokenMismatch(token, self._lock_token)
1040
self._lock_token = token
1042
self._lock_token = self._remote_lock_write(token)
522
self._lock_token = self._remote_lock_write(token)
1043
523
# if self._lock_token is None, then this is something like packs or
1044
524
# svn where we don't get to lock the repo, or a weave style repository
1045
525
# where we cannot lock it over the wire and attempts to do so will
1225
671
# FIXME: It ought to be possible to call this without immediately
1226
672
# triggering _ensure_real. For now it's the easiest thing to do.
1227
673
self._ensure_real()
1228
real_repo = self._real_repository
1229
builder = real_repo.get_commit_builder(branch, parents,
674
builder = self._real_repository.get_commit_builder(branch, parents,
1230
675
config, timestamp=timestamp, timezone=timezone,
1231
676
committer=committer, revprops=revprops, revision_id=revision_id)
1234
def add_fallback_repository(self, repository):
1235
"""Add a repository to use for looking up data not held locally.
1237
:param repository: A repository.
1239
if not self._format.supports_external_lookups:
1240
raise errors.UnstackableRepositoryFormat(
1241
self._format.network_name(), self.base)
1242
# We need to accumulate additional repositories here, to pass them in
1245
if self.is_locked():
1246
# We will call fallback.unlock() when we transition to the unlocked
1247
# state, so always add a lock here. If a caller passes us a locked
1248
# repository, they are responsible for unlocking it later.
1249
repository.lock_read()
1250
self._check_fallback_repository(repository)
1251
self._fallback_repositories.append(repository)
1252
# If self._real_repository was parameterised already (e.g. because a
1253
# _real_branch had its get_stacked_on_url method called), then the
1254
# repository to be added may already be in the _real_repositories list.
1255
if self._real_repository is not None:
1256
fallback_locations = [repo.user_url for repo in
1257
self._real_repository._fallback_repositories]
1258
if repository.user_url not in fallback_locations:
1259
self._real_repository.add_fallback_repository(repository)
1261
def _check_fallback_repository(self, repository):
1262
"""Check that this repository can fallback to repository safely.
1264
Raise an error if not.
1266
:param repository: A repository to fallback to.
1268
return _mod_repository.InterRepository._assert_same_model(
1271
679
def add_inventory(self, revid, inv, parents):
1272
680
self._ensure_real()
1273
681
return self._real_repository.add_inventory(revid, inv, parents)
1275
def add_inventory_by_delta(self, basis_revision_id, delta, new_revision_id,
1276
parents, basis_inv=None, propagate_caches=False):
1278
return self._real_repository.add_inventory_by_delta(basis_revision_id,
1279
delta, new_revision_id, parents, basis_inv=basis_inv,
1280
propagate_caches=propagate_caches)
1282
683
def add_revision(self, rev_id, rev, inv=None, config=None):
1283
684
self._ensure_real()
1284
685
return self._real_repository.add_revision(
1350
741
return repository.InterRepository.get(
1351
742
other, self).search_missing_revision_ids(revision_id, find_ghosts)
1353
def fetch(self, source, revision_id=None, pb=None, find_ghosts=False,
1355
# No base implementation to use as RemoteRepository is not a subclass
1356
# of Repository; so this is a copy of Repository.fetch().
1357
if fetch_spec is not None and revision_id is not None:
1358
raise AssertionError(
1359
"fetch_spec and revision_id are mutually exclusive.")
1360
if self.is_in_write_group():
1361
raise errors.InternalBzrError(
1362
"May not fetch while in a write group.")
1363
# fast path same-url fetch operations
1364
if (self.has_same_location(source)
1365
and fetch_spec is None
1366
and self._has_same_fallbacks(source)):
744
def fetch(self, source, revision_id=None, pb=None):
745
if self.has_same_location(source):
1367
746
# check that last_revision is in 'from' and then return a
1369
748
if (revision_id is not None and
1370
749
not revision.is_null(revision_id)):
1371
750
self.get_revision(revision_id)
1373
# if there is no specific appropriate InterRepository, this will get
1374
# the InterRepository base class, which raises an
1375
# IncompatibleRepositories when asked to fetch.
1376
inter = repository.InterRepository.get(source, self)
1377
return inter.fetch(revision_id=revision_id, pb=pb,
1378
find_ghosts=find_ghosts, fetch_spec=fetch_spec)
753
return self._real_repository.fetch(
754
source, revision_id=revision_id, pb=pb)
1380
756
def create_bundle(self, target, base, fileobj, format=None):
1381
757
self._ensure_real()
1382
758
self._real_repository.create_bundle(target, base, fileobj, format)
761
def control_weaves(self):
763
return self._real_repository.control_weaves
1384
765
@needs_read_lock
1385
766
def get_ancestry(self, revision_id, topo_sorted=True):
1386
767
self._ensure_real()
1387
768
return self._real_repository.get_ancestry(revision_id, topo_sorted)
771
def get_inventory_weave(self):
773
return self._real_repository.get_inventory_weave()
1389
775
def fileids_altered_by_revision_ids(self, revision_ids):
1390
776
self._ensure_real()
1391
777
return self._real_repository.fileids_altered_by_revision_ids(revision_ids)
1394
780
self._ensure_real()
1395
781
return self._real_repository._get_versioned_file_checker(
1396
782
revisions, revision_versions_cache)
1398
784
def iter_files_bytes(self, desired_files):
1399
785
"""See Repository.iter_file_bytes.
1401
787
self._ensure_real()
1402
788
return self._real_repository.iter_files_bytes(desired_files)
1404
def get_parent_map(self, revision_ids):
790
def get_parent_map(self, keys):
1405
791
"""See bzrlib.Graph.get_parent_map()."""
1406
return self._make_parents_provider().get_parent_map(revision_ids)
1408
def _get_parent_map_rpc(self, keys):
792
# Hack to build up the caching logic.
793
ancestry = self._parents_map
795
# Repository is not locked, so there's no cache.
796
missing_revisions = set(keys)
799
missing_revisions = set(key for key in keys if key not in ancestry)
800
if missing_revisions:
801
parent_map = self._get_parent_map(missing_revisions)
802
if 'hpss' in debug.debug_flags:
803
mutter('retransmitted revisions: %d of %d',
804
len(set(ancestry).intersection(parent_map)),
806
ancestry.update(parent_map)
807
present_keys = [k for k in keys if k in ancestry]
808
if 'hpss' in debug.debug_flags:
809
self._requested_parents.update(present_keys)
810
mutter('Current RemoteRepository graph hit rate: %d%%',
811
100.0 * len(self._requested_parents) / len(ancestry))
812
return dict((k, ancestry[k]) for k in present_keys)
814
def _response_is_unknown_method(self, response, verb):
815
"""Return True if response is an unknonwn method response to verb.
817
:param response: The response from a smart client call_expecting_body
819
:param verb: The verb used in that call.
820
:return: True if an unknown method was encountered.
822
# This might live better on
823
# bzrlib.smart.protocol.SmartClientRequestProtocolOne
824
if (response[0] == ('error', "Generic bzr smart protocol error: "
825
"bad request '%s'" % verb) or
826
response[0] == ('error', "Generic bzr smart protocol error: "
827
"bad request u'%s'" % verb)):
828
response[1].cancel_read_body()
832
def _get_parent_map(self, keys):
1409
833
"""Helper for get_parent_map that performs the RPC."""
1410
medium = self._client._medium
1411
if medium._is_remote_before((1, 2)):
834
medium = self._client.get_smart_medium()
835
if not medium._remote_is_at_least_1_2:
1412
836
# We already found out that the server can't understand
1413
837
# Repository.get_parent_map requests, so just fetch the whole
1416
# Note that this reads the whole graph, when only some keys are
1417
# wanted. On this old server there's no way (?) to get them all
1418
# in one go, and the user probably will have seen a warning about
1419
# the server being old anyhow.
1420
rg = self._get_revision_graph(None)
1421
# There is an API discrepancy between get_parent_map and
1422
# get_revision_graph. Specifically, a "key:()" pair in
1423
# get_revision_graph just means a node has no parents. For
1424
# "get_parent_map" it means the node is a ghost. So fix up the
1425
# graph to correct this.
1426
# https://bugs.launchpad.net/bzr/+bug/214894
1427
# There is one other "bug" which is that ghosts in
1428
# get_revision_graph() are not returned at all. But we won't worry
1429
# about that for now.
1430
for node_id, parent_ids in rg.iteritems():
1431
if parent_ids == ():
1432
rg[node_id] = (NULL_REVISION,)
1433
rg[NULL_REVISION] = ()
839
return self.get_revision_graph()
1436
841
keys = set(keys)
1438
raise ValueError('get_parent_map(None) is not valid')
1439
842
if NULL_REVISION in keys:
1440
843
keys.discard(NULL_REVISION)
1441
844
found_parents = {NULL_REVISION:()}
1454
857
# TODO: Manage this incrementally to avoid covering the same path
1455
858
# repeatedly. (The server will have to on each request, but the less
1456
859
# work done the better).
1458
# Negative caching notes:
1459
# new server sends missing when a request including the revid
1460
# 'include-missing:' is present in the request.
1461
# missing keys are serialised as missing:X, and we then call
1462
# provider.note_missing(X) for-all X
1463
parents_map = self._unstacked_provider.get_cached_map()
860
parents_map = self._parents_map
1464
861
if parents_map is None:
1465
862
# Repository is not locked, so there's no cache.
1466
863
parents_map = {}
1467
# start_set is all the keys in the cache
1468
864
start_set = set(parents_map)
1469
# result set is all the references to keys in the cache
1470
865
result_parents = set()
1471
866
for parents in parents_map.itervalues():
1472
867
result_parents.update(parents)
1473
868
stop_keys = result_parents.difference(start_set)
1474
# We don't need to send ghosts back to the server as a position to
1476
stop_keys.difference_update(self._unstacked_provider.missing_keys)
1477
key_count = len(parents_map)
1478
if (NULL_REVISION in result_parents
1479
and NULL_REVISION in self._unstacked_provider.missing_keys):
1480
# If we pruned NULL_REVISION from the stop_keys because it's also
1481
# in our cache of "missing" keys we need to increment our key count
1482
# by 1, because the reconsitituted SearchResult on the server will
1483
# still consider NULL_REVISION to be an included key.
1485
869
included_keys = start_set.intersection(result_parents)
1486
870
start_set.difference_update(included_keys)
1487
recipe = ('manual', start_set, stop_keys, key_count)
871
recipe = (start_set, stop_keys, len(parents_map))
1488
872
body = self._serialise_search_recipe(recipe)
1489
873
path = self.bzrdir._path_for_remote_call(self._client)
1490
874
for key in keys:
1491
if type(key) is not str:
1493
"key %r not a plain string" % (key,))
875
assert type(key) is str
1494
876
verb = 'Repository.get_parent_map'
1495
args = (path, 'include-missing:') + tuple(keys)
1497
response = self._call_with_body_bytes_expecting_body(
1499
except errors.UnknownSmartMethod:
877
args = (path,) + tuple(keys)
878
response = self._client.call_with_body_bytes_expecting_body(
879
verb, args, self._serialise_search_recipe(recipe))
880
if self._response_is_unknown_method(response, verb):
1500
881
# Server does not support this method, so get the whole graph.
1501
882
# Worse, we have to force a disconnection, because the server now
1502
883
# doesn't realise it has a body on the wire to consume, so the
1615
997
# TODO: Suggestion from john: using external tar is much faster than
1616
998
# python's tarfile library, but it may not work on windows.
1619
def inventories(self):
1620
"""Decorate the real repository for now.
1622
In the long term a full blown network facility is needed to
1623
avoid creating a real repository object locally.
1626
return self._real_repository.inventories
1628
1000
@needs_write_lock
1629
def pack(self, hint=None, clean_obsolete_packs=False):
1630
1002
"""Compress the data within the repository.
1632
1004
This is not currently implemented within the smart server.
1634
1006
self._ensure_real()
1635
return self._real_repository.pack(hint=hint, clean_obsolete_packs=clean_obsolete_packs)
1638
def revisions(self):
1639
"""Decorate the real repository for now.
1641
In the short term this should become a real object to intercept graph
1644
In the long term a full blown network facility is needed.
1647
return self._real_repository.revisions
1007
return self._real_repository.pack()
1649
1009
def set_make_working_trees(self, new_value):
1651
new_value_str = "True"
1653
new_value_str = "False"
1654
path = self.bzrdir._path_for_remote_call(self._client)
1656
response = self._call(
1657
'Repository.set_make_working_trees', path, new_value_str)
1658
except errors.UnknownSmartMethod:
1660
self._real_repository.set_make_working_trees(new_value)
1662
if response[0] != 'ok':
1663
raise errors.UnexpectedSmartServerResponse(response)
1666
def signatures(self):
1667
"""Decorate the real repository for now.
1669
In the long term a full blown network facility is needed to avoid
1670
creating a real repository object locally.
1673
return self._real_repository.signatures
1010
raise NotImplementedError(self.set_make_working_trees)
1675
1012
@needs_write_lock
1676
1013
def sign_revision(self, revision_id, gpg_strategy):
1677
1014
self._ensure_real()
1678
1015
return self._real_repository.sign_revision(revision_id, gpg_strategy)
1682
"""Decorate the real repository for now.
1684
In the long term a full blown network facility is needed to avoid
1685
creating a real repository object locally.
1688
return self._real_repository.texts
1690
1017
@needs_read_lock
1691
1018
def get_revisions(self, revision_ids):
1692
1019
self._ensure_real()
1693
1020
return self._real_repository.get_revisions(revision_ids)
1695
1022
def supports_rich_root(self):
1696
return self._format.rich_root_data
1024
return self._real_repository.supports_rich_root()
1698
1026
def iter_reverse_revision_history(self, revision_id):
1699
1027
self._ensure_real()
1716
1045
self._ensure_real()
1717
1046
return self._real_repository.has_signature_for_revision_id(revision_id)
1048
def get_data_stream_for_search(self, search):
1049
medium = self._client.get_smart_medium()
1050
if not medium._remote_is_at_least_1_2:
1052
return self._real_repository.get_data_stream_for_search(search)
1053
REQUEST_NAME = 'Repository.stream_revisions_chunked'
1054
path = self.bzrdir._path_for_remote_call(self._client)
1055
body = self._serialise_search_recipe(search.get_recipe())
1056
response, protocol = self._client.call_with_body_bytes_expecting_body(
1057
REQUEST_NAME, (path,), body)
1059
if self._response_is_unknown_method((response, protocol), REQUEST_NAME):
1060
# Server does not support this method, so fall back to VFS.
1061
# Worse, we have to force a disconnection, because the server now
1062
# doesn't realise it has a body on the wire to consume, so the
1063
# only way to recover is to abandon the connection.
1065
'Server is too old for streaming pull, reconnecting. '
1066
'(Upgrade the server to Bazaar 1.2 to avoid this)')
1068
# To avoid having to disconnect repeatedly, we keep track of the
1069
# fact the server doesn't understand this remote method.
1070
medium._remote_is_at_least_1_2 = False
1072
return self._real_repository.get_data_stream_for_search(search)
1074
if response == ('ok',):
1075
return self._deserialise_stream(protocol)
1076
if response == ('NoSuchRevision', ):
1077
# We cannot easily identify the revision that is missing in this
1078
# situation without doing much more network IO. For now, bail.
1079
raise NoSuchRevision(self, "unknown")
1081
raise errors.UnexpectedSmartServerResponse(response)
1083
def _deserialise_stream(self, protocol):
1084
stream = protocol.read_streamed_body()
1085
container_parser = ContainerPushParser()
1086
for bytes in stream:
1087
container_parser.accept_bytes(bytes)
1088
records = container_parser.read_pending_records()
1089
for record_names, record_bytes in records:
1090
if len(record_names) != 1:
1091
# These records should have only one name, and that name
1092
# should be a one-element tuple.
1093
raise errors.SmartProtocolError(
1094
'Repository data stream had invalid record name %r'
1096
name_tuple = record_names[0]
1097
yield name_tuple, record_bytes
1099
def insert_data_stream(self, stream):
1101
self._real_repository.insert_data_stream(stream)
1719
1103
def item_keys_introduced_by(self, revision_ids, _files_pb=None):
1720
1104
self._ensure_real()
1721
1105
return self._real_repository.item_keys_introduced_by(revision_ids,
1749
1127
:param recipe: A search recipe (start, stop, count).
1750
1128
:return: Serialised bytes.
1752
start_keys = ' '.join(recipe[1])
1753
stop_keys = ' '.join(recipe[2])
1754
count = str(recipe[3])
1130
start_keys = ' '.join(recipe[0])
1131
stop_keys = ' '.join(recipe[1])
1132
count = str(recipe[2])
1755
1133
return '\n'.join((start_keys, stop_keys, count))
1757
def _serialise_search_result(self, search_result):
1758
if isinstance(search_result, graph.PendingAncestryResult):
1759
parts = ['ancestry-of']
1760
parts.extend(search_result.heads)
1762
recipe = search_result.get_recipe()
1763
parts = [recipe[0], self._serialise_search_recipe(recipe)]
1764
return '\n'.join(parts)
1767
path = self.bzrdir._path_for_remote_call(self._client)
1769
response = self._call('PackRepository.autopack', path)
1770
except errors.UnknownSmartMethod:
1772
self._real_repository._pack_collection.autopack()
1775
if response[0] != 'ok':
1776
raise errors.UnexpectedSmartServerResponse(response)
1779
class RemoteStreamSink(repository.StreamSink):
1781
def _insert_real(self, stream, src_format, resume_tokens):
1782
self.target_repo._ensure_real()
1783
sink = self.target_repo._real_repository._get_sink()
1784
result = sink.insert_stream(stream, src_format, resume_tokens)
1786
self.target_repo.autopack()
1789
def insert_stream(self, stream, src_format, resume_tokens):
1790
target = self.target_repo
1791
target._unstacked_provider.missing_keys.clear()
1792
candidate_calls = [('Repository.insert_stream_1.19', (1, 19))]
1793
if target._lock_token:
1794
candidate_calls.append(('Repository.insert_stream_locked', (1, 14)))
1795
lock_args = (target._lock_token or '',)
1797
candidate_calls.append(('Repository.insert_stream', (1, 13)))
1799
client = target._client
1800
medium = client._medium
1801
path = target.bzrdir._path_for_remote_call(client)
1802
# Probe for the verb to use with an empty stream before sending the
1803
# real stream to it. We do this both to avoid the risk of sending a
1804
# large request that is then rejected, and because we don't want to
1805
# implement a way to buffer, rewind, or restart the stream.
1807
for verb, required_version in candidate_calls:
1808
if medium._is_remote_before(required_version):
1811
# We've already done the probing (and set _is_remote_before) on
1812
# a previous insert.
1815
byte_stream = smart_repo._stream_to_byte_stream([], src_format)
1817
response = client.call_with_body_stream(
1818
(verb, path, '') + lock_args, byte_stream)
1819
except errors.UnknownSmartMethod:
1820
medium._remember_remote_is_before(required_version)
1826
return self._insert_real(stream, src_format, resume_tokens)
1827
self._last_inv_record = None
1828
self._last_substream = None
1829
if required_version < (1, 19):
1830
# Remote side doesn't support inventory deltas. Wrap the stream to
1831
# make sure we don't send any. If the stream contains inventory
1832
# deltas we'll interrupt the smart insert_stream request and
1834
stream = self._stop_stream_if_inventory_delta(stream)
1835
byte_stream = smart_repo._stream_to_byte_stream(
1837
resume_tokens = ' '.join(resume_tokens)
1838
response = client.call_with_body_stream(
1839
(verb, path, resume_tokens) + lock_args, byte_stream)
1840
if response[0][0] not in ('ok', 'missing-basis'):
1841
raise errors.UnexpectedSmartServerResponse(response)
1842
if self._last_substream is not None:
1843
# The stream included an inventory-delta record, but the remote
1844
# side isn't new enough to support them. So we need to send the
1845
# rest of the stream via VFS.
1846
self.target_repo.refresh_data()
1847
return self._resume_stream_with_vfs(response, src_format)
1848
if response[0][0] == 'missing-basis':
1849
tokens, missing_keys = bencode.bdecode_as_tuple(response[0][1])
1850
resume_tokens = tokens
1851
return resume_tokens, set(missing_keys)
1853
self.target_repo.refresh_data()
1856
def _resume_stream_with_vfs(self, response, src_format):
1857
"""Resume sending a stream via VFS, first resending the record and
1858
substream that couldn't be sent via an insert_stream verb.
1860
if response[0][0] == 'missing-basis':
1861
tokens, missing_keys = bencode.bdecode_as_tuple(response[0][1])
1862
# Ignore missing_keys, we haven't finished inserting yet
1865
def resume_substream():
1866
# Yield the substream that was interrupted.
1867
for record in self._last_substream:
1869
self._last_substream = None
1870
def resume_stream():
1871
# Finish sending the interrupted substream
1872
yield ('inventory-deltas', resume_substream())
1873
# Then simply continue sending the rest of the stream.
1874
for substream_kind, substream in self._last_stream:
1875
yield substream_kind, substream
1876
return self._insert_real(resume_stream(), src_format, tokens)
1878
def _stop_stream_if_inventory_delta(self, stream):
1879
"""Normally this just lets the original stream pass-through unchanged.
1881
However if any 'inventory-deltas' substream occurs it will stop
1882
streaming, and store the interrupted substream and stream in
1883
self._last_substream and self._last_stream so that the stream can be
1884
resumed by _resume_stream_with_vfs.
1887
stream_iter = iter(stream)
1888
for substream_kind, substream in stream_iter:
1889
if substream_kind == 'inventory-deltas':
1890
self._last_substream = substream
1891
self._last_stream = stream_iter
1894
yield substream_kind, substream
1897
class RemoteStreamSource(repository.StreamSource):
1898
"""Stream data from a remote server."""
1900
def get_stream(self, search):
1901
if (self.from_repository._fallback_repositories and
1902
self.to_format._fetch_order == 'topological'):
1903
return self._real_stream(self.from_repository, search)
1906
repos = [self.from_repository]
1912
repos.extend(repo._fallback_repositories)
1913
sources.append(repo)
1914
return self.missing_parents_chain(search, sources)
1916
def get_stream_for_missing_keys(self, missing_keys):
1917
self.from_repository._ensure_real()
1918
real_repo = self.from_repository._real_repository
1919
real_source = real_repo._get_source(self.to_format)
1920
return real_source.get_stream_for_missing_keys(missing_keys)
1922
def _real_stream(self, repo, search):
1923
"""Get a stream for search from repo.
1925
This never called RemoteStreamSource.get_stream, and is a heler
1926
for RemoteStreamSource._get_stream to allow getting a stream
1927
reliably whether fallback back because of old servers or trying
1928
to stream from a non-RemoteRepository (which the stacked support
1931
source = repo._get_source(self.to_format)
1932
if isinstance(source, RemoteStreamSource):
1934
source = repo._real_repository._get_source(self.to_format)
1935
return source.get_stream(search)
1937
def _get_stream(self, repo, search):
1938
"""Core worker to get a stream from repo for search.
1940
This is used by both get_stream and the stacking support logic. It
1941
deliberately gets a stream for repo which does not need to be
1942
self.from_repository. In the event that repo is not Remote, or
1943
cannot do a smart stream, a fallback is made to the generic
1944
repository._get_stream() interface, via self._real_stream.
1946
In the event of stacking, streams from _get_stream will not
1947
contain all the data for search - this is normal (see get_stream).
1949
:param repo: A repository.
1950
:param search: A search.
1952
# Fallbacks may be non-smart
1953
if not isinstance(repo, RemoteRepository):
1954
return self._real_stream(repo, search)
1955
client = repo._client
1956
medium = client._medium
1957
path = repo.bzrdir._path_for_remote_call(client)
1958
search_bytes = repo._serialise_search_result(search)
1959
args = (path, self.to_format.network_name())
1961
('Repository.get_stream_1.19', (1, 19)),
1962
('Repository.get_stream', (1, 13))]
1964
for verb, version in candidate_verbs:
1965
if medium._is_remote_before(version):
1968
response = repo._call_with_body_bytes_expecting_body(
1969
verb, args, search_bytes)
1970
except errors.UnknownSmartMethod:
1971
medium._remember_remote_is_before(version)
1973
response_tuple, response_handler = response
1977
return self._real_stream(repo, search)
1978
if response_tuple[0] != 'ok':
1979
raise errors.UnexpectedSmartServerResponse(response_tuple)
1980
byte_stream = response_handler.read_streamed_body()
1981
src_format, stream = smart_repo._byte_stream_to_stream(byte_stream)
1982
if src_format.network_name() != repo._format.network_name():
1983
raise AssertionError(
1984
"Mismatched RemoteRepository and stream src %r, %r" % (
1985
src_format.network_name(), repo._format.network_name()))
1988
def missing_parents_chain(self, search, sources):
1989
"""Chain multiple streams together to handle stacking.
1991
:param search: The overall search to satisfy with streams.
1992
:param sources: A list of Repository objects to query.
1994
self.from_serialiser = self.from_repository._format._serializer
1995
self.seen_revs = set()
1996
self.referenced_revs = set()
1997
# If there are heads in the search, or the key count is > 0, we are not
1999
while not search.is_empty() and len(sources) > 1:
2000
source = sources.pop(0)
2001
stream = self._get_stream(source, search)
2002
for kind, substream in stream:
2003
if kind != 'revisions':
2004
yield kind, substream
2006
yield kind, self.missing_parents_rev_handler(substream)
2007
search = search.refine(self.seen_revs, self.referenced_revs)
2008
self.seen_revs = set()
2009
self.referenced_revs = set()
2010
if not search.is_empty():
2011
for kind, stream in self._get_stream(sources[0], search):
2014
def missing_parents_rev_handler(self, substream):
2015
for content in substream:
2016
revision_bytes = content.get_bytes_as('fulltext')
2017
revision = self.from_serialiser.read_revision_from_string(
2019
self.seen_revs.add(content.key[-1])
2020
self.referenced_revs.update(revision.parent_ids)
2024
1136
class RemoteBranchLockableFiles(LockableFiles):
2025
1137
"""A 'LockableFiles' implementation that talks to a smart server.
2027
1139
This is not a public interface class.
2040
1152
self._dir_mode = None
2041
1153
self._file_mode = None
1155
def get(self, path):
1156
"""'get' a remote path as per the LockableFiles interface.
1158
:param path: the file to 'get'. If this is 'branch.conf', we do not
1159
just retrieve a file, instead we ask the smart server to generate
1160
a configuration for us - which is retrieved as an INI file.
1162
if path == 'branch.conf':
1163
path = self.bzrdir._path_for_remote_call(self._client)
1164
response = self._client.call_expecting_body(
1165
'Branch.get_config_file', path)
1166
assert response[0][0] == 'ok', \
1167
'unexpected response code %s' % (response[0],)
1168
return StringIO(response[1].read_body_bytes())
1171
return LockableFiles.get(self, path)
2044
1174
class RemoteBranchFormat(branch.BranchFormat):
2046
def __init__(self, network_name=None):
2047
super(RemoteBranchFormat, self).__init__()
2048
self._matchingbzrdir = RemoteBzrDirFormat()
2049
self._matchingbzrdir.set_branch_format(self)
2050
self._custom_format = None
2051
self._network_name = network_name
2053
1176
def __eq__(self, other):
2054
return (isinstance(other, RemoteBranchFormat) and
1177
return (isinstance(other, RemoteBranchFormat) and
2055
1178
self.__dict__ == other.__dict__)
2057
def _ensure_real(self):
2058
if self._custom_format is None:
2059
self._custom_format = branch.network_format_registry.get(
2062
1180
def get_format_description(self):
2064
return 'Remote: ' + self._custom_format.get_format_description()
2066
def network_name(self):
2067
return self._network_name
2069
def open(self, a_bzrdir, name=None, ignore_fallbacks=False):
2070
return a_bzrdir.open_branch(name=name,
2071
ignore_fallbacks=ignore_fallbacks)
2073
def _vfs_initialize(self, a_bzrdir, name):
2074
# Initialisation when using a local bzrdir object, or a non-vfs init
2075
# method is not available on the server.
2076
# self._custom_format is always set - the start of initialize ensures
2078
if isinstance(a_bzrdir, RemoteBzrDir):
2079
a_bzrdir._ensure_real()
2080
result = self._custom_format.initialize(a_bzrdir._real_bzrdir,
2083
# We assume the bzrdir is parameterised; it may not be.
2084
result = self._custom_format.initialize(a_bzrdir, name)
2085
if (isinstance(a_bzrdir, RemoteBzrDir) and
2086
not isinstance(result, RemoteBranch)):
2087
result = RemoteBranch(a_bzrdir, a_bzrdir.find_repository(), result,
2091
def initialize(self, a_bzrdir, name=None):
2092
# 1) get the network name to use.
2093
if self._custom_format:
2094
network_name = self._custom_format.network_name()
2096
# Select the current bzrlib default and ask for that.
2097
reference_bzrdir_format = bzrdir.format_registry.get('default')()
2098
reference_format = reference_bzrdir_format.get_branch_format()
2099
self._custom_format = reference_format
2100
network_name = reference_format.network_name()
2101
# Being asked to create on a non RemoteBzrDir:
2102
if not isinstance(a_bzrdir, RemoteBzrDir):
2103
return self._vfs_initialize(a_bzrdir, name=name)
2104
medium = a_bzrdir._client._medium
2105
if medium._is_remote_before((1, 13)):
2106
return self._vfs_initialize(a_bzrdir, name=name)
2107
# Creating on a remote bzr dir.
2108
# 2) try direct creation via RPC
2109
path = a_bzrdir._path_for_remote_call(a_bzrdir._client)
2110
if name is not None:
2111
# XXX JRV20100304: Support creating colocated branches
2112
raise errors.NoColocatedBranchSupport(self)
2113
verb = 'BzrDir.create_branch'
2115
response = a_bzrdir._call(verb, path, network_name)
2116
except errors.UnknownSmartMethod:
2117
# Fallback - use vfs methods
2118
medium._remember_remote_is_before((1, 13))
2119
return self._vfs_initialize(a_bzrdir, name=name)
2120
if response[0] != 'ok':
2121
raise errors.UnexpectedSmartServerResponse(response)
2122
# Turn the response into a RemoteRepository object.
2123
format = RemoteBranchFormat(network_name=response[1])
2124
repo_format = response_tuple_to_repo_format(response[3:])
2125
if response[2] == '':
2126
repo_bzrdir = a_bzrdir
2128
repo_bzrdir = RemoteBzrDir(
2129
a_bzrdir.root_transport.clone(response[2]), a_bzrdir._format,
2131
remote_repo = RemoteRepository(repo_bzrdir, repo_format)
2132
remote_branch = RemoteBranch(a_bzrdir, remote_repo,
2133
format=format, setup_stacking=False, name=name)
2134
# XXX: We know this is a new branch, so it must have revno 0, revid
2135
# NULL_REVISION. Creating the branch locked would make this be unable
2136
# to be wrong; here its simply very unlikely to be wrong. RBC 20090225
2137
remote_branch._last_revision_info_cache = 0, NULL_REVISION
2138
return remote_branch
2140
def make_tags(self, branch):
2142
return self._custom_format.make_tags(branch)
1181
return 'Remote BZR Branch'
1183
def get_format_string(self):
1184
return 'Remote BZR Branch'
1186
def open(self, a_bzrdir):
1187
assert isinstance(a_bzrdir, RemoteBzrDir)
1188
return a_bzrdir.open_branch()
1190
def initialize(self, a_bzrdir):
1191
assert isinstance(a_bzrdir, RemoteBzrDir)
1192
return a_bzrdir.create_branch()
2144
1194
def supports_tags(self):
2145
1195
# Remote branches might support tags, but we won't know until we
2146
1196
# access the real remote branch.
2148
return self._custom_format.supports_tags()
2150
def supports_stacking(self):
2152
return self._custom_format.supports_stacking()
2154
def supports_set_append_revisions_only(self):
2156
return self._custom_format.supports_set_append_revisions_only()
2159
class RemoteBranch(branch.Branch, _RpcHelper, lock._RelockDebugMixin):
1200
class RemoteBranch(branch.Branch):
2160
1201
"""Branch stored on a server accessed by HPSS RPC.
2162
1203
At the moment most operations are mapped down to simple file operations.
2165
1206
def __init__(self, remote_bzrdir, remote_repository, real_branch=None,
2166
_client=None, format=None, setup_stacking=True, name=None):
2167
1208
"""Create a RemoteBranch instance.
2169
1210
:param real_branch: An optional local implementation of the branch
2170
1211
format, usually accessing the data via the VFS.
2171
1212
:param _client: Private parameter for testing.
2172
:param format: A RemoteBranchFormat object, None to create one
2173
automatically. If supplied it should have a network_name already
2175
:param setup_stacking: If True make an RPC call to determine the
2176
stacked (or not) status of the branch. If False assume the branch
2178
:param name: Colocated branch name
2180
1214
# We intentionally don't call the parent class's __init__, because it
2181
1215
# will try to assign to self.tags, which is a property in this subclass.
2182
1216
# And the parent's __init__ doesn't do much anyway.
1217
self._revision_id_to_revno_cache = None
1218
self._revision_history_cache = None
2183
1219
self.bzrdir = remote_bzrdir
2184
1220
if _client is not None:
2185
1221
self._client = _client
2187
self._client = remote_bzrdir._client
1223
self._client = client._SmartClient(self.bzrdir._shared_medium)
2188
1224
self.repository = remote_repository
2189
1225
if real_branch is not None:
2190
1226
self._real_branch = real_branch
2198
1234
self._real_branch.repository = self.repository
2200
1236
self._real_branch = None
2201
# Fill out expected attributes of branch for bzrlib API users.
2202
self._clear_cached_state()
2203
# TODO: deprecate self.base in favor of user_url
2204
self.base = self.bzrdir.user_url
1237
# Fill out expected attributes of branch for bzrlib api users.
1238
self._format = RemoteBranchFormat()
1239
self.base = self.bzrdir.root_transport.base
2206
1240
self._control_files = None
2207
1241
self._lock_mode = None
2208
1242
self._lock_token = None
2209
self._repo_lock_token = None
2210
1243
self._lock_count = 0
2211
1244
self._leave_lock = False
2212
# Setup a format: note that we cannot call _ensure_real until all the
2213
# attributes above are set: This code cannot be moved higher up in this
2216
self._format = RemoteBranchFormat()
2217
if real_branch is not None:
2218
self._format._network_name = \
2219
self._real_branch._format.network_name()
2221
self._format = format
2222
# when we do _ensure_real we may need to pass ignore_fallbacks to the
2223
# branch.open_branch method.
2224
self._real_ignore_fallbacks = not setup_stacking
2225
if not self._format._network_name:
2226
# Did not get from open_branchV2 - old server.
2228
self._format._network_name = \
2229
self._real_branch._format.network_name()
2230
self.tags = self._format.make_tags(self)
2231
# The base class init is not called, so we duplicate this:
2232
hooks = branch.Branch.hooks['open']
2235
self._is_stacked = False
2237
self._setup_stacking()
2239
def _setup_stacking(self):
2240
# configure stacking into the remote repository, by reading it from
2243
fallback_url = self.get_stacked_on_url()
2244
except (errors.NotStacked, errors.UnstackableBranchFormat,
2245
errors.UnstackableRepositoryFormat), e:
2247
self._is_stacked = True
2248
self._activate_fallback_location(fallback_url)
2250
def _get_config(self):
2251
return RemoteBranchConfig(self)
2253
def _get_real_transport(self):
2254
# if we try vfs access, return the real branch's vfs transport
2256
return self._real_branch._transport
2258
_transport = property(_get_real_transport)
2260
1246
def __str__(self):
2261
1247
return "%s(%s)" % (self.__class__.__name__, self.base)
2268
1254
Used before calls to self._real_branch.
2270
if self._real_branch is None:
2271
if not vfs.vfs_enabled():
2272
raise AssertionError('smart server vfs must be enabled '
2273
'to use vfs implementation')
1256
if not self._real_branch:
1257
assert vfs.vfs_enabled()
2274
1258
self.bzrdir._ensure_real()
2275
self._real_branch = self.bzrdir._real_bzrdir.open_branch(
2276
ignore_fallbacks=self._real_ignore_fallbacks, name=self._name)
2277
if self.repository._real_repository is None:
2278
# Give the remote repository the matching real repo.
2279
real_repo = self._real_branch.repository
2280
if isinstance(real_repo, RemoteRepository):
2281
real_repo._ensure_real()
2282
real_repo = real_repo._real_repository
2283
self.repository._set_real_repository(real_repo)
2284
# Give the real branch the remote repository to let fast-pathing
1259
self._real_branch = self.bzrdir._real_bzrdir.open_branch()
1260
# Give the remote repository the matching real repo.
1261
real_repo = self._real_branch.repository
1262
if isinstance(real_repo, RemoteRepository):
1263
real_repo._ensure_real()
1264
real_repo = real_repo._real_repository
1265
self.repository._set_real_repository(real_repo)
1266
# Give the branch the remote repository to let fast-pathing happen.
2286
1267
self._real_branch.repository = self.repository
1268
# XXX: deal with _lock_mode == 'w'
2287
1269
if self._lock_mode == 'r':
2288
1270
self._real_branch.lock_read()
2289
elif self._lock_mode == 'w':
2290
self._real_branch.lock_write(token=self._lock_token)
2292
def _translate_error(self, err, **context):
2293
self.repository._translate_error(err, branch=self, **context)
2295
def _clear_cached_state(self):
2296
super(RemoteBranch, self)._clear_cached_state()
2297
if self._real_branch is not None:
2298
self._real_branch._clear_cached_state()
2300
def _clear_cached_state_of_remote_branch_only(self):
2301
"""Like _clear_cached_state, but doesn't clear the cache of
2304
This is useful when falling back to calling a method of
2305
self._real_branch that changes state. In that case the underlying
2306
branch changes, so we need to invalidate this RemoteBranch's cache of
2307
it. However, there's no need to invalidate the _real_branch's cache
2308
too, in fact doing so might harm performance.
2310
super(RemoteBranch, self)._clear_cached_state()
2313
1273
def control_files(self):
2328
1288
self._ensure_real()
2329
1289
return self._real_branch.get_physical_lock_status()
2331
def get_stacked_on_url(self):
2332
"""Get the URL this branch is stacked against.
2334
:raises NotStacked: If the branch is not stacked.
2335
:raises UnstackableBranchFormat: If the branch does not support
2337
:raises UnstackableRepositoryFormat: If the repository does not support
2341
# there may not be a repository yet, so we can't use
2342
# self._translate_error, so we can't use self._call either.
2343
response = self._client.call('Branch.get_stacked_on_url',
2344
self._remote_path())
2345
except errors.ErrorFromSmartServer, err:
2346
# there may not be a repository yet, so we can't call through
2347
# its _translate_error
2348
_translate_error(err, branch=self)
2349
except errors.UnknownSmartMethod, err:
2351
return self._real_branch.get_stacked_on_url()
2352
if response[0] != 'ok':
2353
raise errors.UnexpectedSmartServerResponse(response)
2356
def set_stacked_on_url(self, url):
2357
branch.Branch.set_stacked_on_url(self, url)
2359
self._is_stacked = False
2361
self._is_stacked = True
2363
def _vfs_get_tags_bytes(self):
2365
return self._real_branch._get_tags_bytes()
2367
def _get_tags_bytes(self):
2368
medium = self._client._medium
2369
if medium._is_remote_before((1, 13)):
2370
return self._vfs_get_tags_bytes()
2372
response = self._call('Branch.get_tags_bytes', self._remote_path())
2373
except errors.UnknownSmartMethod:
2374
medium._remember_remote_is_before((1, 13))
2375
return self._vfs_get_tags_bytes()
2378
def _vfs_set_tags_bytes(self, bytes):
2380
return self._real_branch._set_tags_bytes(bytes)
2382
def _set_tags_bytes(self, bytes):
2383
medium = self._client._medium
2384
if medium._is_remote_before((1, 18)):
2385
self._vfs_set_tags_bytes(bytes)
2389
self._remote_path(), self._lock_token, self._repo_lock_token)
2390
response = self._call_with_body_bytes(
2391
'Branch.set_tags_bytes', args, bytes)
2392
except errors.UnknownSmartMethod:
2393
medium._remember_remote_is_before((1, 18))
2394
self._vfs_set_tags_bytes(bytes)
2396
1291
def lock_read(self):
2397
"""Lock the branch for read operations.
2399
:return: An object with an unlock method which will release the lock
2402
self.repository.lock_read()
2403
1292
if not self._lock_mode:
2404
self._note_lock('r')
2405
1293
self._lock_mode = 'r'
2406
1294
self._lock_count = 1
2407
1295
if self._real_branch is not None:
2408
1296
self._real_branch.lock_read()
2410
1298
self._lock_count += 1
2413
1300
def _remote_lock_write(self, token):
2414
1301
if token is None:
2415
1302
branch_token = repo_token = ''
2417
1304
branch_token = token
2418
repo_token = self.repository.lock_write().repository_token
1305
repo_token = self.repository.lock_write()
2419
1306
self.repository.unlock()
2420
err_context = {'token': token}
2421
response = self._call(
2422
'Branch.lock_write', self._remote_path(), branch_token,
2423
repo_token or '', **err_context)
2424
if response[0] != 'ok':
1307
path = self.bzrdir._path_for_remote_call(self._client)
1308
response = self._client.call('Branch.lock_write', path, branch_token,
1310
if response[0] == 'ok':
1311
ok, branch_token, repo_token = response
1312
return branch_token, repo_token
1313
elif response[0] == 'LockContention':
1314
raise errors.LockContention('(remote lock)')
1315
elif response[0] == 'TokenMismatch':
1316
raise errors.TokenMismatch(token, '(remote token)')
1317
elif response[0] == 'UnlockableTransport':
1318
raise errors.UnlockableTransport(self.bzrdir.root_transport)
1319
elif response[0] == 'ReadOnlyError':
1320
raise errors.ReadOnlyError(self)
1321
elif response[0] == 'LockFailed':
1322
raise errors.LockFailed(response[1], response[2])
2425
1324
raise errors.UnexpectedSmartServerResponse(response)
2426
ok, branch_token, repo_token = response
2427
return branch_token, repo_token
2429
1326
def lock_write(self, token=None):
2430
1327
if not self._lock_mode:
2431
self._note_lock('w')
2432
# Lock the branch and repo in one remote call.
2433
1328
remote_tokens = self._remote_lock_write(token)
2434
1329
self._lock_token, self._repo_lock_token = remote_tokens
2435
if not self._lock_token:
2436
raise SmartProtocolError('Remote server did not return a token!')
2437
# Tell the self.repository object that it is locked.
2438
self.repository.lock_write(
2439
self._repo_lock_token, _skip_rpc=True)
1330
assert self._lock_token, 'Remote server did not return a token!'
1331
# TODO: We really, really, really don't want to call _ensure_real
1332
# here, but it's the easiest way to ensure coherency between the
1333
# state of the RemoteBranch and RemoteRepository objects and the
1334
# physical locks. If we don't materialise the real objects here,
1335
# then getting everything in the right state later is complex, so
1336
# for now we just do it the lazy way.
1337
# -- Andrew Bennetts, 2007-02-22.
2441
1339
if self._real_branch is not None:
2442
self._real_branch.lock_write(token=self._lock_token)
1340
self._real_branch.repository.lock_write(
1341
token=self._repo_lock_token)
1343
self._real_branch.lock_write(token=self._lock_token)
1345
self._real_branch.repository.unlock()
2443
1346
if token is not None:
2444
1347
self._leave_lock = True
1349
# XXX: this case seems to be unreachable; token cannot be None.
2446
1350
self._leave_lock = False
2447
1351
self._lock_mode = 'w'
2448
1352
self._lock_count = 1
2450
1354
raise errors.ReadOnlyTransaction
2452
1356
if token is not None:
2453
# A token was given to lock_write, and we're relocking, so
2454
# check that the given token actually matches the one we
1357
# A token was given to lock_write, and we're relocking, so check
1358
# that the given token actually matches the one we already have.
2456
1359
if token != self._lock_token:
2457
1360
raise errors.TokenMismatch(token, self._lock_token)
2458
1361
self._lock_count += 1
2459
# Re-lock the repository too.
2460
self.repository.lock_write(self._repo_lock_token)
2461
return BranchWriteLockResult(self.unlock, self._lock_token or None)
1362
return self._lock_token or None
2463
1364
def _unlock(self, branch_token, repo_token):
2464
err_context = {'token': str((branch_token, repo_token))}
2465
response = self._call(
2466
'Branch.unlock', self._remote_path(), branch_token,
2467
repo_token or '', **err_context)
1365
path = self.bzrdir._path_for_remote_call(self._client)
1366
response = self._client.call('Branch.unlock', path, branch_token,
2468
1368
if response == ('ok',):
2470
raise errors.UnexpectedSmartServerResponse(response)
1370
elif response[0] == 'TokenMismatch':
1371
raise errors.TokenMismatch(
1372
str((branch_token, repo_token)), '(remote tokens)')
1374
raise errors.UnexpectedSmartServerResponse(response)
2472
@only_raises(errors.LockNotHeld, errors.LockBroken)
2473
1376
def unlock(self):
2475
self._lock_count -= 1
2476
if not self._lock_count:
2477
self._clear_cached_state()
2478
mode = self._lock_mode
2479
self._lock_mode = None
2480
if self._real_branch is not None:
2481
if (not self._leave_lock and mode == 'w' and
2482
self._repo_lock_token):
2483
# If this RemoteBranch will remove the physical lock
2484
# for the repository, make sure the _real_branch
2485
# doesn't do it first. (Because the _real_branch's
2486
# repository is set to be the RemoteRepository.)
2487
self._real_branch.repository.leave_lock_in_place()
2488
self._real_branch.unlock()
2490
# Only write-locked branched need to make a remote method
2491
# call to perform the unlock.
2493
if not self._lock_token:
2494
raise AssertionError('Locked, but no token!')
2495
branch_token = self._lock_token
2496
repo_token = self._repo_lock_token
2497
self._lock_token = None
2498
self._repo_lock_token = None
2499
if not self._leave_lock:
2500
self._unlock(branch_token, repo_token)
2502
self.repository.unlock()
1377
self._lock_count -= 1
1378
if not self._lock_count:
1379
self._clear_cached_state()
1380
mode = self._lock_mode
1381
self._lock_mode = None
1382
if self._real_branch is not None:
1383
if (not self._leave_lock and mode == 'w' and
1384
self._repo_lock_token):
1385
# If this RemoteBranch will remove the physical lock for the
1386
# repository, make sure the _real_branch doesn't do it
1387
# first. (Because the _real_branch's repository is set to
1388
# be the RemoteRepository.)
1389
self._real_branch.repository.leave_lock_in_place()
1390
self._real_branch.unlock()
1392
# Only write-locked branched need to make a remote method call
1393
# to perfom the unlock.
1395
assert self._lock_token, 'Locked, but no token!'
1396
branch_token = self._lock_token
1397
repo_token = self._repo_lock_token
1398
self._lock_token = None
1399
self._repo_lock_token = None
1400
if not self._leave_lock:
1401
self._unlock(branch_token, repo_token)
2504
1403
def break_lock(self):
2505
1404
self._ensure_real()
2515
1414
raise NotImplementedError(self.dont_leave_lock_in_place)
2516
1415
self._leave_lock = False
2519
def get_rev_id(self, revno, history=None):
2521
return _mod_revision.NULL_REVISION
2522
last_revision_info = self.last_revision_info()
2523
ok, result = self.repository.get_rev_id_for_revno(
2524
revno, last_revision_info)
2527
missing_parent = result[1]
2528
# Either the revision named by the server is missing, or its parent
2529
# is. Call get_parent_map to determine which, so that we report a
2531
parent_map = self.repository.get_parent_map([missing_parent])
2532
if missing_parent in parent_map:
2533
missing_parent = parent_map[missing_parent]
2534
raise errors.RevisionNotPresent(missing_parent, self.repository)
2536
def _last_revision_info(self):
2537
response = self._call('Branch.last_revision_info', self._remote_path())
2538
if response[0] != 'ok':
2539
raise SmartProtocolError('unexpected response code %s' % (response,))
1417
def last_revision_info(self):
1418
"""See Branch.last_revision_info()."""
1419
path = self.bzrdir._path_for_remote_call(self._client)
1420
response = self._client.call('Branch.last_revision_info', path)
1421
assert response[0] == 'ok', 'unexpected response code %s' % (response,)
2540
1422
revno = int(response[1])
2541
1423
last_revision = response[2]
2542
1424
return (revno, last_revision)
2544
1426
def _gen_revision_history(self):
2545
1427
"""See Branch._gen_revision_history()."""
2546
if self._is_stacked:
2548
return self._real_branch._gen_revision_history()
2549
response_tuple, response_handler = self._call_expecting_body(
2550
'Branch.revision_history', self._remote_path())
2551
if response_tuple[0] != 'ok':
2552
raise errors.UnexpectedSmartServerResponse(response_tuple)
2553
result = response_handler.read_body_bytes().split('\x00')
1428
path = self.bzrdir._path_for_remote_call(self._client)
1429
response = self._client.call_expecting_body(
1430
'Branch.revision_history', path)
1431
assert response[0][0] == 'ok', ('unexpected response code %s'
1433
result = response[1].read_body_bytes().split('\x00')
2554
1434
if result == ['']:
2558
def _remote_path(self):
2559
return self.bzrdir._path_for_remote_call(self._client)
2561
def _set_last_revision_descendant(self, revision_id, other_branch,
2562
allow_diverged=False, allow_overwrite_descendant=False):
2563
# This performs additional work to meet the hook contract; while its
2564
# undesirable, we have to synthesise the revno to call the hook, and
2565
# not calling the hook is worse as it means changes can't be prevented.
2566
# Having calculated this though, we can't just call into
2567
# set_last_revision_info as a simple call, because there is a set_rh
2568
# hook that some folk may still be using.
2569
old_revno, old_revid = self.last_revision_info()
2570
history = self._lefthand_history(revision_id)
2571
self._run_pre_change_branch_tip_hooks(len(history), revision_id)
2572
err_context = {'other_branch': other_branch}
2573
response = self._call('Branch.set_last_revision_ex',
2574
self._remote_path(), self._lock_token, self._repo_lock_token,
2575
revision_id, int(allow_diverged), int(allow_overwrite_descendant),
2577
self._clear_cached_state()
2578
if len(response) != 3 and response[0] != 'ok':
2579
raise errors.UnexpectedSmartServerResponse(response)
2580
new_revno, new_revision_id = response[1:]
2581
self._last_revision_info_cache = new_revno, new_revision_id
2582
self._run_post_change_branch_tip_hooks(old_revno, old_revid)
2583
if self._real_branch is not None:
2584
cache = new_revno, new_revision_id
2585
self._real_branch._last_revision_info_cache = cache
2587
def _set_last_revision(self, revision_id):
2588
old_revno, old_revid = self.last_revision_info()
2589
# This performs additional work to meet the hook contract; while its
2590
# undesirable, we have to synthesise the revno to call the hook, and
2591
# not calling the hook is worse as it means changes can't be prevented.
2592
# Having calculated this though, we can't just call into
2593
# set_last_revision_info as a simple call, because there is a set_rh
2594
# hook that some folk may still be using.
2595
history = self._lefthand_history(revision_id)
2596
self._run_pre_change_branch_tip_hooks(len(history), revision_id)
2597
self._clear_cached_state()
2598
response = self._call('Branch.set_last_revision',
2599
self._remote_path(), self._lock_token, self._repo_lock_token,
2601
if response != ('ok',):
2602
raise errors.UnexpectedSmartServerResponse(response)
2603
self._run_post_change_branch_tip_hooks(old_revno, old_revid)
2605
1438
@needs_write_lock
2606
1439
def set_revision_history(self, rev_history):
2607
1440
# Send just the tip revision of the history; the server will generate
2608
1441
# the full history from that. If the revision doesn't exist in this
2609
1442
# branch, NoSuchRevision will be raised.
1443
path = self.bzrdir._path_for_remote_call(self._client)
2610
1444
if rev_history == []:
2611
1445
rev_id = 'null:'
2613
1447
rev_id = rev_history[-1]
2614
self._set_last_revision(rev_id)
2615
for hook in branch.Branch.hooks['set_rh']:
2616
hook(self, rev_history)
1448
self._clear_cached_state()
1449
response = self._client.call('Branch.set_last_revision',
1450
path, self._lock_token, self._repo_lock_token, rev_id)
1451
if response[0] == 'NoSuchRevision':
1452
raise NoSuchRevision(self, rev_id)
1454
assert response == ('ok',), (
1455
'unexpected response code %r' % (response,))
2617
1456
self._cache_revision_history(rev_history)
2619
def _get_parent_location(self):
2620
medium = self._client._medium
2621
if medium._is_remote_before((1, 13)):
2622
return self._vfs_get_parent_location()
2624
response = self._call('Branch.get_parent', self._remote_path())
2625
except errors.UnknownSmartMethod:
2626
medium._remember_remote_is_before((1, 13))
2627
return self._vfs_get_parent_location()
2628
if len(response) != 1:
2629
raise errors.UnexpectedSmartServerResponse(response)
2630
parent_location = response[0]
2631
if parent_location == '':
2633
return parent_location
2635
def _vfs_get_parent_location(self):
2637
return self._real_branch._get_parent_location()
2639
def _set_parent_location(self, url):
2640
medium = self._client._medium
2641
if medium._is_remote_before((1, 15)):
2642
return self._vfs_set_parent_location(url)
2644
call_url = url or ''
2645
if type(call_url) is not str:
2646
raise AssertionError('url must be a str or None (%s)' % url)
2647
response = self._call('Branch.set_parent_location',
2648
self._remote_path(), self._lock_token, self._repo_lock_token,
2650
except errors.UnknownSmartMethod:
2651
medium._remember_remote_is_before((1, 15))
2652
return self._vfs_set_parent_location(url)
2654
raise errors.UnexpectedSmartServerResponse(response)
2656
def _vfs_set_parent_location(self, url):
2658
return self._real_branch._set_parent_location(url)
1458
def get_parent(self):
1460
return self._real_branch.get_parent()
1462
def set_parent(self, url):
1464
return self._real_branch.set_parent(url)
1466
def get_config(self):
1467
return RemoteBranchConfig(self)
1469
def sprout(self, to_bzrdir, revision_id=None):
1470
# Like Branch.sprout, except that it sprouts a branch in the default
1471
# format, because RemoteBranches can't be created at arbitrary URLs.
1472
# XXX: if to_bzrdir is a RemoteBranch, this should perhaps do
1473
# to_bzrdir.create_branch...
1475
result = self._real_branch._format.initialize(to_bzrdir)
1476
self.copy_content_into(result, revision_id=revision_id)
1477
result.set_parent(self.bzrdir.root_transport.base)
2660
1480
@needs_write_lock
2661
1481
def pull(self, source, overwrite=False, stop_revision=None,
2663
self._clear_cached_state_of_remote_branch_only()
1483
# FIXME: This asks the real branch to run the hooks, which means
1484
# they're called with the wrong target branch parameter.
1485
# The test suite specifically allows this at present but it should be
1486
# fixed. It should get a _override_hook_target branch,
1487
# as push does. -- mbp 20070405
2664
1488
self._ensure_real()
2665
return self._real_branch.pull(
1489
self._real_branch.pull(
2666
1490
source, overwrite=overwrite, stop_revision=stop_revision,
2667
_override_hook_target=self, **kwargs)
2669
1493
@needs_read_lock
2670
1494
def push(self, target, overwrite=False, stop_revision=None):
2676
1500
def is_locked(self):
2677
1501
return self._lock_count >= 1
2680
def revision_id_to_revno(self, revision_id):
2682
return self._real_branch.revision_id_to_revno(revision_id)
2685
1503
def set_last_revision_info(self, revno, revision_id):
2686
# XXX: These should be returned by the set_last_revision_info verb
2687
old_revno, old_revid = self.last_revision_info()
2688
self._run_pre_change_branch_tip_hooks(revno, revision_id)
2689
revision_id = ensure_null(revision_id)
2691
response = self._call('Branch.set_last_revision_info',
2692
self._remote_path(), self._lock_token, self._repo_lock_token,
2693
str(revno), revision_id)
2694
except errors.UnknownSmartMethod:
2696
self._clear_cached_state_of_remote_branch_only()
2697
self._real_branch.set_last_revision_info(revno, revision_id)
2698
self._last_revision_info_cache = revno, revision_id
2700
if response == ('ok',):
2701
self._clear_cached_state()
2702
self._last_revision_info_cache = revno, revision_id
2703
self._run_post_change_branch_tip_hooks(old_revno, old_revid)
2704
# Update the _real_branch's cache too.
2705
if self._real_branch is not None:
2706
cache = self._last_revision_info_cache
2707
self._real_branch._last_revision_info_cache = cache
2709
raise errors.UnexpectedSmartServerResponse(response)
1505
self._clear_cached_state()
1506
return self._real_branch.set_last_revision_info(revno, revision_id)
2712
1508
def generate_revision_history(self, revision_id, last_rev=None,
2713
1509
other_branch=None):
2714
medium = self._client._medium
2715
if not medium._is_remote_before((1, 6)):
2716
# Use a smart method for 1.6 and above servers
2718
self._set_last_revision_descendant(revision_id, other_branch,
2719
allow_diverged=True, allow_overwrite_descendant=True)
2721
except errors.UnknownSmartMethod:
2722
medium._remember_remote_is_before((1, 6))
2723
self._clear_cached_state_of_remote_branch_only()
2724
self.set_revision_history(self._lefthand_history(revision_id,
2725
last_rev=last_rev,other_branch=other_branch))
1511
return self._real_branch.generate_revision_history(
1512
revision_id, last_rev=last_rev, other_branch=other_branch)
1517
return self._real_branch.tags
2727
1519
def set_push_location(self, location):
2728
1520
self._ensure_real()
2729
1521
return self._real_branch.set_push_location(location)
2732
class RemoteConfig(object):
2733
"""A Config that reads and writes from smart verbs.
2735
It is a low-level object that considers config data to be name/value pairs
2736
that may be associated with a section. Assigning meaning to the these
2737
values is done at higher levels like bzrlib.config.TreeConfig.
2740
def get_option(self, name, section=None, default=None):
2741
"""Return the value associated with a named option.
2743
:param name: The name of the value
2744
:param section: The section the option is in (if any)
2745
:param default: The value to return if the value is not set
2746
:return: The value or default value
2749
configobj = self._get_configobj()
2751
section_obj = configobj
2754
section_obj = configobj[section]
2757
return section_obj.get(name, default)
2758
except errors.UnknownSmartMethod:
2759
return self._vfs_get_option(name, section, default)
2761
def _response_to_configobj(self, response):
2762
if len(response[0]) and response[0][0] != 'ok':
2763
raise errors.UnexpectedSmartServerResponse(response)
2764
lines = response[1].read_body_bytes().splitlines()
2765
return config.ConfigObj(lines, encoding='utf-8')
2768
class RemoteBranchConfig(RemoteConfig):
2769
"""A RemoteConfig for Branches."""
2771
def __init__(self, branch):
2772
self._branch = branch
2774
def _get_configobj(self):
2775
path = self._branch._remote_path()
2776
response = self._branch._client.call_expecting_body(
2777
'Branch.get_config_file', path)
2778
return self._response_to_configobj(response)
2780
def set_option(self, value, name, section=None):
2781
"""Set the value associated with a named option.
2783
:param value: The value to set
2784
:param name: The name of the value to set
2785
:param section: The section the option is in (if any)
2787
medium = self._branch._client._medium
2788
if medium._is_remote_before((1, 14)):
2789
return self._vfs_set_option(value, name, section)
2791
path = self._branch._remote_path()
2792
response = self._branch._client.call('Branch.set_config_option',
2793
path, self._branch._lock_token, self._branch._repo_lock_token,
2794
value.encode('utf8'), name, section or '')
2795
except errors.UnknownSmartMethod:
2796
medium._remember_remote_is_before((1, 14))
2797
return self._vfs_set_option(value, name, section)
2799
raise errors.UnexpectedSmartServerResponse(response)
2801
def _real_object(self):
2802
self._branch._ensure_real()
2803
return self._branch._real_branch
2805
def _vfs_set_option(self, value, name, section=None):
2806
return self._real_object()._get_config().set_option(
2807
value, name, section)
2810
class RemoteBzrDirConfig(RemoteConfig):
2811
"""A RemoteConfig for BzrDirs."""
2813
def __init__(self, bzrdir):
2814
self._bzrdir = bzrdir
2816
def _get_configobj(self):
2817
medium = self._bzrdir._client._medium
2818
verb = 'BzrDir.get_config_file'
2819
if medium._is_remote_before((1, 15)):
2820
raise errors.UnknownSmartMethod(verb)
2821
path = self._bzrdir._path_for_remote_call(self._bzrdir._client)
2822
response = self._bzrdir._call_expecting_body(
2824
return self._response_to_configobj(response)
2826
def _vfs_get_option(self, name, section, default):
2827
return self._real_object()._get_config().get_option(
2828
name, section, default)
2830
def set_option(self, value, name, section=None):
2831
"""Set the value associated with a named option.
2833
:param value: The value to set
2834
:param name: The name of the value to set
2835
:param section: The section the option is in (if any)
2837
return self._real_object()._get_config().set_option(
2838
value, name, section)
2840
def _real_object(self):
2841
self._bzrdir._ensure_real()
2842
return self._bzrdir._real_bzrdir
1523
def update_revisions(self, other, stop_revision=None, overwrite=False):
1525
return self._real_branch.update_revisions(
1526
other, stop_revision=stop_revision, overwrite=overwrite)
1529
class RemoteBranchConfig(BranchConfig):
1532
self.branch._ensure_real()
1533
return self.branch._real_branch.get_config().username()
1535
def _get_branch_data_config(self):
1536
self.branch._ensure_real()
1537
if self._branch_data_config is None:
1538
self._branch_data_config = TreeConfig(self.branch._real_branch)
1539
return self._branch_data_config
2846
1542
def _extract_tar(tar, to_dir):
2851
1547
for tarinfo in tar:
2852
1548
tar.extract(tarinfo, to_dir)
2855
def _translate_error(err, **context):
2856
"""Translate an ErrorFromSmartServer into a more useful error.
2858
Possible context keys:
2866
If the error from the server doesn't match a known pattern, then
2867
UnknownErrorFromSmartServer is raised.
2871
return context[name]
2872
except KeyError, key_err:
2873
mutter('Missing key %r in context %r', key_err.args[0], context)
2876
"""Get the path from the context if present, otherwise use first error
2880
return context['path']
2881
except KeyError, key_err:
2883
return err.error_args[0]
2884
except IndexError, idx_err:
2886
'Missing key %r in context %r', key_err.args[0], context)
2889
if err.error_verb == 'IncompatibleRepositories':
2890
raise errors.IncompatibleRepositories(err.error_args[0],
2891
err.error_args[1], err.error_args[2])
2892
elif err.error_verb == 'NoSuchRevision':
2893
raise NoSuchRevision(find('branch'), err.error_args[0])
2894
elif err.error_verb == 'nosuchrevision':
2895
raise NoSuchRevision(find('repository'), err.error_args[0])
2896
elif err.error_verb == 'nobranch':
2897
if len(err.error_args) >= 1:
2898
extra = err.error_args[0]
2901
raise errors.NotBranchError(path=find('bzrdir').root_transport.base,
2903
elif err.error_verb == 'norepository':
2904
raise errors.NoRepositoryPresent(find('bzrdir'))
2905
elif err.error_verb == 'LockContention':
2906
raise errors.LockContention('(remote lock)')
2907
elif err.error_verb == 'UnlockableTransport':
2908
raise errors.UnlockableTransport(find('bzrdir').root_transport)
2909
elif err.error_verb == 'LockFailed':
2910
raise errors.LockFailed(err.error_args[0], err.error_args[1])
2911
elif err.error_verb == 'TokenMismatch':
2912
raise errors.TokenMismatch(find('token'), '(remote token)')
2913
elif err.error_verb == 'Diverged':
2914
raise errors.DivergedBranches(find('branch'), find('other_branch'))
2915
elif err.error_verb == 'TipChangeRejected':
2916
raise errors.TipChangeRejected(err.error_args[0].decode('utf8'))
2917
elif err.error_verb == 'UnstackableBranchFormat':
2918
raise errors.UnstackableBranchFormat(*err.error_args)
2919
elif err.error_verb == 'UnstackableRepositoryFormat':
2920
raise errors.UnstackableRepositoryFormat(*err.error_args)
2921
elif err.error_verb == 'NotStacked':
2922
raise errors.NotStacked(branch=find('branch'))
2923
elif err.error_verb == 'PermissionDenied':
2925
if len(err.error_args) >= 2:
2926
extra = err.error_args[1]
2929
raise errors.PermissionDenied(path, extra=extra)
2930
elif err.error_verb == 'ReadError':
2932
raise errors.ReadError(path)
2933
elif err.error_verb == 'NoSuchFile':
2935
raise errors.NoSuchFile(path)
2936
elif err.error_verb == 'FileExists':
2937
raise errors.FileExists(err.error_args[0])
2938
elif err.error_verb == 'DirectoryNotEmpty':
2939
raise errors.DirectoryNotEmpty(err.error_args[0])
2940
elif err.error_verb == 'ShortReadvError':
2941
args = err.error_args
2942
raise errors.ShortReadvError(
2943
args[0], int(args[1]), int(args[2]), int(args[3]))
2944
elif err.error_verb in ('UnicodeEncodeError', 'UnicodeDecodeError'):
2945
encoding = str(err.error_args[0]) # encoding must always be a string
2946
val = err.error_args[1]
2947
start = int(err.error_args[2])
2948
end = int(err.error_args[3])
2949
reason = str(err.error_args[4]) # reason must always be a string
2950
if val.startswith('u:'):
2951
val = val[2:].decode('utf-8')
2952
elif val.startswith('s:'):
2953
val = val[2:].decode('base64')
2954
if err.error_verb == 'UnicodeDecodeError':
2955
raise UnicodeDecodeError(encoding, val, start, end, reason)
2956
elif err.error_verb == 'UnicodeEncodeError':
2957
raise UnicodeEncodeError(encoding, val, start, end, reason)
2958
elif err.error_verb == 'ReadOnlyError':
2959
raise errors.TransportNotPossible('readonly transport')
2960
raise errors.UnknownErrorFromSmartServer(err)
added
removed
bzrlib/remote.py
