~bzr-pqm/bzr/bzr.dev

# Copyright (C) 2006-2010 Canonical Ltd

    bencode,

    controldir,

    lock,

    repository as _mod_repository,

    revision as _mod_revision,

    static_tuple,

from bzrlib.branch import BranchReferenceFormat, BranchWriteLockResult

from bzrlib.decorators import needs_read_lock, needs_write_lock, only_raises

from bzrlib.repository import RepositoryWriteLockResult

    def _call_with_body_bytes(self, method, args, body_bytes, **err_context):

        try:

            return self._client.call_with_body_bytes(method, args, body_bytes)

        except errors.ErrorFromSmartServer, err:

            self._translate_error(err, **err_context)

 

    def __init__(self, transport, format, _client=None, _force_probe=False):

        self._has_working_tree = None

            if not _force_probe:

                return

 

        self._probe_bzrdir()

 

    def __repr__(self):

        return '%s(%r)' % (self.__class__.__name__, self._client)

 

    def _probe_bzrdir(self):

        medium = self._client._medium

        if medium._is_remote_before((2, 1)):

            self._rpc_open(path)

            return

        try:

            self._rpc_open_2_1(path)

            return

        except errors.UnknownSmartMethod:

            medium._remember_remote_is_before((2, 1))

            self._rpc_open(path)

 

    def _rpc_open_2_1(self, path):

        response = self._call('BzrDir.open_2.1', path)

        if response == ('no',):

            raise errors.NotBranchError(path=self.root_transport.base)

        elif response[0] == 'yes':

            if response[1] == 'yes':

                self._has_working_tree = True

            elif response[1] == 'no':

                self._has_working_tree = False

            else:

                raise errors.UnexpectedSmartServerResponse(response)

        else:

            raise errors.UnexpectedSmartServerResponse(response)

 

    def _rpc_open(self, path):

            raise errors.NotBranchError(path=self.root_transport.base)

            if 'hpssvfs' in debug.debug_flags:

                import traceback

                warning('VFS BzrDir access triggered\n%s',

                    ''.join(traceback.format_stack()))

        format = controldir.network_format_registry.get(control_name)

    def create_branch(self, name=None):

        real_branch = self._format.get_branch_format().initialize(self,

            name=name)

            result = RemoteBranch(self, self.find_repository(), real_branch,

                                  name=name)

    def destroy_branch(self, name=None):

        self._real_bzrdir.destroy_branch(name=name)

    def find_branch_format(self, name=None):

        b = self.open_branch(name=name)

    def get_branch_reference(self, name=None):

        if name is not None:

            # XXX JRV20100304: Support opening colocated branches

            raise errors.NoColocatedBranchSupport(self)

        candidate_calls = [

            ('BzrDir.open_branchV3', (2, 1)),

            ('BzrDir.open_branchV2', (1, 13)),

            ('BzrDir.open_branch', None),

            ]

        for verb, required_version in candidate_calls:

            if required_version and medium._is_remote_before(required_version):

                continue

                response = self._call(verb, path)

                if required_version is None:

                    raise

                medium._remember_remote_is_before(required_version)

            else:

                break

        if verb == 'BzrDir.open_branch':

            if response[0] != 'ok':

                raise errors.UnexpectedSmartServerResponse(response)

            if response[1] != '':

                return ('ref', response[1])

            else:

                return ('branch', '')

        if response[0] not in ('ref', 'branch'):

        return response

    def _get_tree_branch(self, name=None):

        return None, self.open_branch(name=name)

    def open_branch(self, name=None, unsupported=False,

                    ignore_fallbacks=False):

        if unsupported:

            return format.open(self, name=name, _found=True,

                location=response[1], ignore_fallbacks=ignore_fallbacks)

            setup_stacking=not ignore_fallbacks, name=name)

    def has_workingtree(self):

        if self._has_working_tree is None:

            self._ensure_real()

            self._has_working_tree = self._real_bzrdir.has_workingtree()

        return self._has_working_tree

 

        if self.has_workingtree():

    def get_branch_transport(self, branch_format, name=None):

        return self._real_bzrdir.get_branch_transport(branch_format, name=name)

        self._supports_chks = None

    def __repr__(self):

        return "%s(_network_name=%r)" % (self.__class__.__name__,

            self._network_name)

 

    def supports_chks(self):

        if self._supports_chks is None:

            self._ensure_real()

            self._supports_chks = self._custom_format.supports_chks

        return self._supports_chks

 

    @property

        self._ensure_real()

        return 'Remote: ' + self._custom_format.get_format_description()

    def pack_compresses(self):

        self._ensure_real()

        return self._custom_format.pack_compresses

 

    @property

class RemoteRepository(_RpcHelper, lock._RelockDebugMixin,

    controldir.ControlComponent):

        # Cache of revision parents; misses are cached during read locks, and

        # write locks when no _real_repository has been set.

    @property

    def user_transport(self):

        return self.bzrdir.user_transport

 

    @property

    def control_transport(self):

        # XXX: Normally you shouldn't directly get at the remote repository

        # transport, but I'm not sure it's worth making this method

        # optional -- mbp 2010-04-21

        return self.bzrdir.get_repository_transport(None)

        

    def get_missing_parent_inventories(self, check_for_missing_texts=True):

        self._ensure_real()

        return self._real_repository.get_missing_parent_inventories(

            check_for_missing_texts=check_for_missing_texts)

 

    def _get_rev_id_for_revno_vfs(self, revno, known_pair):

        self._ensure_real()

        return self._real_repository.get_rev_id_for_revno(

            revno, known_pair)

 

    def get_rev_id_for_revno(self, revno, known_pair):

        """See Repository.get_rev_id_for_revno."""

        path = self.bzrdir._path_for_remote_call(self._client)

        try:

            if self._client._medium._is_remote_before((1, 17)):

                return self._get_rev_id_for_revno_vfs(revno, known_pair)

            response = self._call(

                'Repository.get_rev_id_for_revno', path, revno, known_pair)

        except errors.UnknownSmartMethod:

            self._client._medium._remember_remote_is_before((1, 17))

            return self._get_rev_id_for_revno_vfs(revno, known_pair)

        if response[0] == 'ok':

            return True, response[1]

        elif response[0] == 'history-incomplete':

            known_pair = response[1:3]

            for fallback in self._fallback_repositories:

                found, result = fallback.get_rev_id_for_revno(revno, known_pair)

                if found:

                    return True, result

                else:

                    known_pair = result

            # Not found in any fallbacks

            return False, known_pair

        else:

            raise errors.UnexpectedSmartServerResponse(response)

            if 'hpssvfs' in debug.debug_flags:

                import traceback

                warning('VFS Repository access triggered\n%s',

                    ''.join(traceback.format_stack()))

            self._unstacked_provider.missing_keys.clear()

    @needs_read_lock

        """True if this repository has a copy of the revision."""

        # Copy of bzrlib.repository.Repository.has_revision

        return revision_id in self.has_revisions((revision_id,))

    @needs_read_lock

        """Probe to find out the presence of multiple revisions.

 

        :param revision_ids: An iterable of revision_ids.

        :return: A set of the revision_ids that were present.

        """

        # Copy of bzrlib.repository.Repository.has_revisions

        parent_map = self.get_parent_map(revision_ids)

        result = set(parent_map)

        if _mod_revision.NULL_REVISION in revision_ids:

            result.add(_mod_revision.NULL_REVISION)

    def _has_same_fallbacks(self, other_repo):

        """Returns true if the repositories have the same fallbacks."""

        # XXX: copied from Repository; it should be unified into a base class

        # <https://bugs.launchpad.net/bzr/+bug/401622>

        my_fb = self._fallback_repositories

        other_fb = other_repo._fallback_repositories

        if len(my_fb) != len(other_fb):

            return False

        for f, g in zip(my_fb, other_fb):

            if not f.has_same_location(g):

                return False

        return True

 

        # TODO: Move to RepositoryBase and unify with the regular Repository

        # one; unfortunately the tests rely on slightly different behaviour at

        # present -- mbp 20090710

    @needs_read_lock

    def get_known_graph_ancestry(self, revision_ids):

        """Return the known graph for a set of revision ids and their ancestors.

        """

        st = static_tuple.StaticTuple

        revision_keys = [st(r_id).intern() for r_id in revision_ids]

        known_graph = self.revisions.get_known_graph_ancestry(revision_keys)

        return graph.GraphThunkIdsToKeys(known_graph)

 

    def _warn_if_deprecated(self, branch=None):

        # If we have a real repository, the check will be done there, if we

        # don't the check will be done remotely.

        pass

 

        """Lock the repository for read operations.

 

        :return: A bzrlib.lock.LogicalLockResult.

        """

            self._note_lock('r')

            for repo in self._fallback_repositories:

                repo.lock_read()

        return lock.LogicalLockResult(self.unlock)

            self._note_lock('w')

            cache_misses = self._real_repository is None

            self._unstacked_provider.enable_cache(cache_misses=cache_misses)

            for repo in self._fallback_repositories:

                # Writes don't affect fallback repos

                repo.lock_read()

        return RepositoryWriteLockResult(self.unlock, self._lock_token or None)

    @only_raises(errors.LockNotHeld, errors.LockBroken)

            return lock.cant_unlock_not_held(self)

        # Fallbacks are always 'lock_read()' so we don't pay attention to

        # self._leave_lock

        for repo in self._fallback_repositories:

            repo.unlock()

        if self.is_locked():

            # We will call fallback.unlock() when we transition to the unlocked

            # state, so always add a lock here. If a caller passes us a locked

            # repository, they are responsible for unlocking it later.

            repository.lock_read()

        self._check_fallback_repository(repository)

            fallback_locations = [repo.user_url for repo in

            if repository.user_url not in fallback_locations:

    def _check_fallback_repository(self, repository):

        """Check that this repository can fallback to repository safely.

 

        Raise an error if not.

 

        :param repository: A repository to fallback to.

        """

        return _mod_repository.InterRepository._assert_same_model(

            self, repository)

 

            parents, basis_inv=None, propagate_caches=False):

            delta, new_revision_id, parents, basis_inv=basis_inv,

            propagate_caches=propagate_caches)

    def iter_inventories(self, revision_ids, ordering=None):

        return self._real_repository.iter_inventories(revision_ids, ordering)

        """Re-read any data needed to synchronise with disk.

        repository. On all repositories this will work outside of write groups.

        Some repository formats (pack and newer for bzrlib native formats)

        support refresh_data inside write groups. If called inside a write

        group on a repository that does not support refreshing in a write group

        IsInWriteGroupError will be raised.

        if (self.has_same_location(source)

            and fetch_spec is None

            and self._has_same_fallbacks(source)):

    def _get_inventory_xml(self, revision_id):

        self._ensure_real()

        return self._real_repository._get_inventory_xml(revision_id)

    def check(self, revision_ids=None, callback_refs=None, check_repo=True):

        return self._real_repository.check(revision_ids=revision_ids,

            callback_refs=callback_refs, check_repo=check_repo)

    def pack(self, hint=None, clean_obsolete_packs=False):

        return self._real_repository.pack(hint=hint, clean_obsolete_packs=clean_obsolete_packs)

    def _find_inconsistent_revision_parents(self, revisions_iterator=None):

        return self._real_repository._find_inconsistent_revision_parents(

            revisions_iterator)

        return graph.StackedParentsProvider(providers)

        target._unstacked_provider.missing_keys.clear()

        candidate_calls = [('Repository.insert_stream_1.19', (1, 19))]

            candidate_calls.append(('Repository.insert_stream_locked', (1, 14)))

            lock_args = (target._lock_token or '',)

            candidate_calls.append(('Repository.insert_stream', (1, 13)))

            lock_args = ()

        # Probe for the verb to use with an empty stream before sending the

        # real stream to it.  We do this both to avoid the risk of sending a

        # large request that is then rejected, and because we don't want to

        # implement a way to buffer, rewind, or restart the stream.

        found_verb = False

        for verb, required_version in candidate_calls:

            if medium._is_remote_before(required_version):

                continue

            if resume_tokens:

                # We've already done the probing (and set _is_remote_before) on

                # a previous insert.

                found_verb = True

                break

                    (verb, path, '') + lock_args, byte_stream)

            else:

                found_verb = True

                break

        if not found_verb:

            # Have to use VFS.

            return self._insert_real(stream, src_format, resume_tokens)

        self._last_inv_record = None

        self._last_substream = None

        if required_version < (1, 19):

            # Remote side doesn't support inventory deltas.  Wrap the stream to

            # make sure we don't send any.  If the stream contains inventory

            # deltas we'll interrupt the smart insert_stream request and

            # fallback to VFS.

            stream = self._stop_stream_if_inventory_delta(stream)

            (verb, path, resume_tokens) + lock_args, byte_stream)

        if self._last_substream is not None:

            # The stream included an inventory-delta record, but the remote

            # side isn't new enough to support them.  So we need to send the

            # rest of the stream via VFS.

            self.target_repo.refresh_data()

            return self._resume_stream_with_vfs(response, src_format)

    def _resume_stream_with_vfs(self, response, src_format):

        """Resume sending a stream via VFS, first resending the record and

        substream that couldn't be sent via an insert_stream verb.

        """

        if response[0][0] == 'missing-basis':

            tokens, missing_keys = bencode.bdecode_as_tuple(response[0][1])

            # Ignore missing_keys, we haven't finished inserting yet

        else:

            tokens = []

        def resume_substream():

            # Yield the substream that was interrupted.

            for record in self._last_substream:

                yield record

            self._last_substream = None

        def resume_stream():

            # Finish sending the interrupted substream

            yield ('inventory-deltas', resume_substream())

            # Then simply continue sending the rest of the stream.

            for substream_kind, substream in self._last_stream:

                yield substream_kind, substream

        return self._insert_real(resume_stream(), src_format, tokens)

 

    def _stop_stream_if_inventory_delta(self, stream):

        """Normally this just lets the original stream pass-through unchanged.

 

        However if any 'inventory-deltas' substream occurs it will stop

        streaming, and store the interrupted substream and stream in

        self._last_substream and self._last_stream so that the stream can be

        resumed by _resume_stream_with_vfs.

        """

                    

        stream_iter = iter(stream)

        for substream_kind, substream in stream_iter:

            if substream_kind == 'inventory-deltas':

                self._last_substream = substream

                self._last_stream = stream_iter

                return

            else:

                yield substream_kind, substream

            

        sources = []