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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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from bzrlib.lazy_import import lazy_import
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lazy_import(globals(), """
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from binascii import hexlify
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from copy import deepcopy
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from cStringIO import StringIO
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from unittest import TestSuite
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revision as _mod_revision,
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from bzrlib.bundle import serializer
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from bzrlib import bzrdir, check, delta, gpg, errors, xml5, ui, transactions, osutils
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from bzrlib.decorators import needs_read_lock, needs_write_lock
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from bzrlib.errors import InvalidRevisionId
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from bzrlib.graph import Graph
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from bzrlib.inter import InterObject
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from bzrlib.inventory import Inventory, InventoryDirectory, ROOT_ID
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from bzrlib.knit import KnitVersionedFile, KnitPlainFactory
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from bzrlib.lockable_files import LockableFiles, TransportLock
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from bzrlib.lockdir import LockDir
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from bzrlib.osutils import (safe_unicode, rand_bytes, compact_date,
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from bzrlib.revision import NULL_REVISION, Revision
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from bzrlib.revisiontree import RevisionTree
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from bzrlib.store.versioned import VersionedFileStore
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from bzrlib.store.versioned import VersionedFileStore, WeaveStore
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from bzrlib.store.text import TextStore
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from bzrlib import symbol_versioning
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from bzrlib.symbol_versioning import (deprecated_method,
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from bzrlib.testament import Testament
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from bzrlib.decorators import needs_read_lock, needs_write_lock, only_raises
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from bzrlib.inter import InterObject
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from bzrlib.inventory import (
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from bzrlib.lock import _RelockDebugMixin
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from bzrlib import registry
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from bzrlib.trace import (
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log_exception_quietly, note, mutter, mutter_callsite, warning)
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from bzrlib.trace import mutter, note, warning
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from bzrlib.tsort import topo_sort
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from bzrlib.weave import WeaveFile
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# Old formats display a warning, but only once
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_deprecation_warning_done = False
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class CommitBuilder(object):
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"""Provides an interface to build up a commit.
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This allows describing a tree to be committed without needing to
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know the internals of the format of the repository.
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# all clients should supply tree roots.
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record_root_entry = True
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# the default CommitBuilder does not manage trees whose root is versioned.
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_versioned_root = False
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def __init__(self, repository, parents, config, timestamp=None,
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timezone=None, committer=None, revprops=None,
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"""Initiate a CommitBuilder.
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:param repository: Repository to commit to.
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:param parents: Revision ids of the parents of the new revision.
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:param config: Configuration to use.
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:param timestamp: Optional timestamp recorded for commit.
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:param timezone: Optional timezone for timestamp.
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:param committer: Optional committer to set for commit.
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:param revprops: Optional dictionary of revision properties.
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:param revision_id: Optional revision id.
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self._config = config
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if committer is None:
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self._committer = self._config.username()
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self._committer = committer
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self.new_inventory = Inventory(None)
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self._new_revision_id = revision_id
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self.parents = parents
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self.repository = repository
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if revprops is not None:
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self._validate_revprops(revprops)
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self._revprops.update(revprops)
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if timestamp is None:
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timestamp = time.time()
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# Restrict resolution to 1ms
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self._timestamp = round(timestamp, 3)
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self._timezone = osutils.local_time_offset()
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self._timezone = int(timezone)
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self._generate_revision_if_needed()
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self.__heads = graph.HeadsCache(repository.get_graph()).heads
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self._basis_delta = []
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# API compatibility, older code that used CommitBuilder did not call
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# .record_delete(), which means the delta that is computed would not be
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# valid. Callers that will call record_delete() should call
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# .will_record_deletes() to indicate that.
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self._recording_deletes = False
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# memo'd check for no-op commits.
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self._any_changes = False
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def any_changes(self):
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"""Return True if any entries were changed.
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This includes merge-only changes. It is the core for the --unchanged
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:return: True if any changes have occured.
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return self._any_changes
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def _validate_unicode_text(self, text, context):
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"""Verify things like commit messages don't have bogus characters."""
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raise ValueError('Invalid value for %s: %r' % (context, text))
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def _validate_revprops(self, revprops):
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for key, value in revprops.iteritems():
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# We know that the XML serializers do not round trip '\r'
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# correctly, so refuse to accept them
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if not isinstance(value, basestring):
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raise ValueError('revision property (%s) is not a valid'
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' (unicode) string: %r' % (key, value))
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self._validate_unicode_text(value,
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'revision property (%s)' % (key,))
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def commit(self, message):
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"""Make the actual commit.
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:return: The revision id of the recorded revision.
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self._validate_unicode_text(message, 'commit message')
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rev = _mod_revision.Revision(
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timestamp=self._timestamp,
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timezone=self._timezone,
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committer=self._committer,
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inventory_sha1=self.inv_sha1,
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revision_id=self._new_revision_id,
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properties=self._revprops)
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rev.parent_ids = self.parents
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self.repository.add_revision(self._new_revision_id, rev,
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self.new_inventory, self._config)
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self.repository.commit_write_group()
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return self._new_revision_id
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"""Abort the commit that is being built.
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self.repository.abort_write_group()
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def revision_tree(self):
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"""Return the tree that was just committed.
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After calling commit() this can be called to get a RevisionTree
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representing the newly committed tree. This is preferred to
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calling Repository.revision_tree() because that may require
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deserializing the inventory, while we already have a copy in
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if self.new_inventory is None:
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self.new_inventory = self.repository.get_inventory(
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self._new_revision_id)
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return RevisionTree(self.repository, self.new_inventory,
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self._new_revision_id)
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def finish_inventory(self):
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"""Tell the builder that the inventory is finished.
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:return: The inventory id in the repository, which can be used with
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repository.get_inventory.
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if self.new_inventory is None:
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# an inventory delta was accumulated without creating a new
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basis_id = self.basis_delta_revision
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# We ignore the 'inventory' returned by add_inventory_by_delta
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# because self.new_inventory is used to hint to the rest of the
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# system what code path was taken
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self.inv_sha1, _ = self.repository.add_inventory_by_delta(
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basis_id, self._basis_delta, self._new_revision_id,
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if self.new_inventory.root is None:
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raise AssertionError('Root entry should be supplied to'
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' record_entry_contents, as of bzr 0.10.')
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self.new_inventory.add(InventoryDirectory(ROOT_ID, '', None))
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self.new_inventory.revision_id = self._new_revision_id
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self.inv_sha1 = self.repository.add_inventory(
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self._new_revision_id,
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return self._new_revision_id
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def _gen_revision_id(self):
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"""Return new revision-id."""
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return generate_ids.gen_revision_id(self._config.username(),
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def _generate_revision_if_needed(self):
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"""Create a revision id if None was supplied.
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If the repository can not support user-specified revision ids
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they should override this function and raise CannotSetRevisionId
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if _new_revision_id is not None.
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:raises: CannotSetRevisionId
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if self._new_revision_id is None:
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self._new_revision_id = self._gen_revision_id()
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self.random_revid = True
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self.random_revid = False
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def _heads(self, file_id, revision_ids):
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"""Calculate the graph heads for revision_ids in the graph of file_id.
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This can use either a per-file graph or a global revision graph as we
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have an identity relationship between the two graphs.
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return self.__heads(revision_ids)
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def _check_root(self, ie, parent_invs, tree):
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"""Helper for record_entry_contents.
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:param ie: An entry being added.
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:param parent_invs: The inventories of the parent revisions of the
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:param tree: The tree that is being committed.
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# In this revision format, root entries have no knit or weave When
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# serializing out to disk and back in root.revision is always
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ie.revision = self._new_revision_id
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def _require_root_change(self, tree):
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"""Enforce an appropriate root object change.
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This is called once when record_iter_changes is called, if and only if
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the root was not in the delta calculated by record_iter_changes.
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:param tree: The tree which is being committed.
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# NB: if there are no parents then this method is not called, so no
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# need to guard on parents having length.
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entry = entry_factory['directory'](tree.path2id(''), '',
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entry.revision = self._new_revision_id
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self._basis_delta.append(('', '', entry.file_id, entry))
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def _get_delta(self, ie, basis_inv, path):
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"""Get a delta against the basis inventory for ie."""
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if ie.file_id not in basis_inv:
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result = (None, path, ie.file_id, ie)
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self._basis_delta.append(result)
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elif ie != basis_inv[ie.file_id]:
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# TODO: avoid tis id2path call.
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result = (basis_inv.id2path(ie.file_id), path, ie.file_id, ie)
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self._basis_delta.append(result)
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def get_basis_delta(self):
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"""Return the complete inventory delta versus the basis inventory.
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This has been built up with the calls to record_delete and
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record_entry_contents. The client must have already called
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will_record_deletes() to indicate that they will be generating a
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:return: An inventory delta, suitable for use with apply_delta, or
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Repository.add_inventory_by_delta, etc.
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if not self._recording_deletes:
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raise AssertionError("recording deletes not activated.")
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return self._basis_delta
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def record_delete(self, path, file_id):
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"""Record that a delete occured against a basis tree.
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This is an optional API - when used it adds items to the basis_delta
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being accumulated by the commit builder. It cannot be called unless the
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method will_record_deletes() has been called to inform the builder that
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a delta is being supplied.
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:param path: The path of the thing deleted.
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:param file_id: The file id that was deleted.
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if not self._recording_deletes:
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raise AssertionError("recording deletes not activated.")
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delta = (path, None, file_id, None)
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self._basis_delta.append(delta)
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self._any_changes = True
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def will_record_deletes(self):
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"""Tell the commit builder that deletes are being notified.
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This enables the accumulation of an inventory delta; for the resulting
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commit to be valid, deletes against the basis MUST be recorded via
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builder.record_delete().
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self._recording_deletes = True
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basis_id = self.parents[0]
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basis_id = _mod_revision.NULL_REVISION
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self.basis_delta_revision = basis_id
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def record_entry_contents(self, ie, parent_invs, path, tree,
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"""Record the content of ie from tree into the commit if needed.
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Side effect: sets ie.revision when unchanged
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:param ie: An inventory entry present in the commit.
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:param parent_invs: The inventories of the parent revisions of the
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:param path: The path the entry is at in the tree.
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:param tree: The tree which contains this entry and should be used to
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:param content_summary: Summary data from the tree about the paths
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content - stat, length, exec, sha/link target. This is only
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accessed when the entry has a revision of None - that is when it is
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a candidate to commit.
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:return: A tuple (change_delta, version_recorded, fs_hash).
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change_delta is an inventory_delta change for this entry against
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the basis tree of the commit, or None if no change occured against
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version_recorded is True if a new version of the entry has been
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recorded. For instance, committing a merge where a file was only
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changed on the other side will return (delta, False).
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fs_hash is either None, or the hash details for the path (currently
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a tuple of the contents sha1 and the statvalue returned by
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tree.get_file_with_stat()).
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if self.new_inventory.root is None:
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if ie.parent_id is not None:
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raise errors.RootMissing()
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self._check_root(ie, parent_invs, tree)
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if ie.revision is None:
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kind = content_summary[0]
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# ie is carried over from a prior commit
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# XXX: repository specific check for nested tree support goes here - if
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# the repo doesn't want nested trees we skip it ?
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if (kind == 'tree-reference' and
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not self.repository._format.supports_tree_reference):
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# mismatch between commit builder logic and repository:
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# this needs the entry creation pushed down into the builder.
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raise NotImplementedError('Missing repository subtree support.')
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self.new_inventory.add(ie)
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# TODO: slow, take it out of the inner loop.
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basis_inv = parent_invs[0]
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basis_inv = Inventory(root_id=None)
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# ie.revision is always None if the InventoryEntry is considered
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# for committing. We may record the previous parents revision if the
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# content is actually unchanged against a sole head.
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if ie.revision is not None:
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if not self._versioned_root and path == '':
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# repositories that do not version the root set the root's
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# revision to the new commit even when no change occurs (more
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# specifically, they do not record a revision on the root; and
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# the rev id is assigned to the root during deserialisation -
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# this masks when a change may have occurred against the basis.
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# To match this we always issue a delta, because the revision
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# of the root will always be changing.
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if ie.file_id in basis_inv:
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delta = (basis_inv.id2path(ie.file_id), path,
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delta = (None, path, ie.file_id, ie)
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self._basis_delta.append(delta)
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return delta, False, None
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# we don't need to commit this, because the caller already
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# determined that an existing revision of this file is
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# appropriate. If its not being considered for committing then
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# it and all its parents to the root must be unaltered so
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# no-change against the basis.
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if ie.revision == self._new_revision_id:
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raise AssertionError("Impossible situation, a skipped "
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"inventory entry (%r) claims to be modified in this "
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"commit (%r).", (ie, self._new_revision_id))
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return None, False, None
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# XXX: Friction: parent_candidates should return a list not a dict
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# so that we don't have to walk the inventories again.
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parent_candiate_entries = ie.parent_candidates(parent_invs)
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head_set = self._heads(ie.file_id, parent_candiate_entries.keys())
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for inv in parent_invs:
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if ie.file_id in inv:
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old_rev = inv[ie.file_id].revision
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if old_rev in head_set:
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heads.append(inv[ie.file_id].revision)
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head_set.remove(inv[ie.file_id].revision)
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# now we check to see if we need to write a new record to the
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# We write a new entry unless there is one head to the ancestors, and
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# the kind-derived content is unchanged.
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# Cheapest check first: no ancestors, or more the one head in the
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# ancestors, we write a new node.
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# There is a single head, look it up for comparison
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parent_entry = parent_candiate_entries[heads[0]]
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# if the non-content specific data has changed, we'll be writing a
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if (parent_entry.parent_id != ie.parent_id or
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parent_entry.name != ie.name):
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# now we need to do content specific checks:
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# if the kind changed the content obviously has
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if kind != parent_entry.kind:
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# Stat cache fingerprint feedback for the caller - None as we usually
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# don't generate one.
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if content_summary[2] is None:
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raise ValueError("Files must not have executable = None")
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# We can't trust a check of the file length because of content
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if (# if the exec bit has changed we have to store:
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parent_entry.executable != content_summary[2]):
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elif parent_entry.text_sha1 == content_summary[3]:
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# all meta and content is unchanged (using a hash cache
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# hit to check the sha)
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ie.revision = parent_entry.revision
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ie.text_size = parent_entry.text_size
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ie.text_sha1 = parent_entry.text_sha1
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ie.executable = parent_entry.executable
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return self._get_delta(ie, basis_inv, path), False, None
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# Either there is only a hash change(no hash cache entry,
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# or same size content change), or there is no change on
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# Provide the parent's hash to the store layer, so that the
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# content is unchanged we will not store a new node.
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nostore_sha = parent_entry.text_sha1
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# We want to record a new node regardless of the presence or
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# absence of a content change in the file.
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ie.executable = content_summary[2]
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file_obj, stat_value = tree.get_file_with_stat(ie.file_id, path)
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text = file_obj.read()
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ie.text_sha1, ie.text_size = self._add_text_to_weave(
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ie.file_id, text, heads, nostore_sha)
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# Let the caller know we generated a stat fingerprint.
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fingerprint = (ie.text_sha1, stat_value)
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except errors.ExistingContent:
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# Turns out that the file content was unchanged, and we were
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# only going to store a new node if it was changed. Carry over
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ie.revision = parent_entry.revision
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ie.text_size = parent_entry.text_size
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ie.text_sha1 = parent_entry.text_sha1
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ie.executable = parent_entry.executable
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return self._get_delta(ie, basis_inv, path), False, None
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elif kind == 'directory':
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# all data is meta here, nothing specific to directory, so
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ie.revision = parent_entry.revision
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return self._get_delta(ie, basis_inv, path), False, None
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self._add_text_to_weave(ie.file_id, '', heads, None)
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elif kind == 'symlink':
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current_link_target = content_summary[3]
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# symlink target is not generic metadata, check if it has
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if current_link_target != parent_entry.symlink_target:
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# unchanged, carry over.
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ie.revision = parent_entry.revision
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ie.symlink_target = parent_entry.symlink_target
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return self._get_delta(ie, basis_inv, path), False, None
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ie.symlink_target = current_link_target
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self._add_text_to_weave(ie.file_id, '', heads, None)
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elif kind == 'tree-reference':
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if content_summary[3] != parent_entry.reference_revision:
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# unchanged, carry over.
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ie.reference_revision = parent_entry.reference_revision
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ie.revision = parent_entry.revision
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return self._get_delta(ie, basis_inv, path), False, None
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ie.reference_revision = content_summary[3]
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if ie.reference_revision is None:
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raise AssertionError("invalid content_summary for nested tree: %r"
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% (content_summary,))
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self._add_text_to_weave(ie.file_id, '', heads, None)
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raise NotImplementedError('unknown kind')
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ie.revision = self._new_revision_id
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self._any_changes = True
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return self._get_delta(ie, basis_inv, path), True, fingerprint
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def record_iter_changes(self, tree, basis_revision_id, iter_changes,
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_entry_factory=entry_factory):
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"""Record a new tree via iter_changes.
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:param tree: The tree to obtain text contents from for changed objects.
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:param basis_revision_id: The revision id of the tree the iter_changes
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has been generated against. Currently assumed to be the same
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as self.parents[0] - if it is not, errors may occur.
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:param iter_changes: An iter_changes iterator with the changes to apply
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to basis_revision_id. The iterator must not include any items with
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a current kind of None - missing items must be either filtered out
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or errored-on beefore record_iter_changes sees the item.
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:param _entry_factory: Private method to bind entry_factory locally for
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:return: A generator of (file_id, relpath, fs_hash) tuples for use with
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# Create an inventory delta based on deltas between all the parents and
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# deltas between all the parent inventories. We use inventory delta's
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# between the inventory objects because iter_changes masks
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# last-changed-field only changes.
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# file_id -> change map, change is fileid, paths, changed, versioneds,
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# parents, names, kinds, executables
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# {file_id -> revision_id -> inventory entry, for entries in parent
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# trees that are not parents[0]
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revtrees = list(self.repository.revision_trees(self.parents))
592
except errors.NoSuchRevision:
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# one or more ghosts, slow path.
595
for revision_id in self.parents:
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revtrees.append(self.repository.revision_tree(revision_id))
598
except errors.NoSuchRevision:
600
basis_revision_id = _mod_revision.NULL_REVISION
602
revtrees.append(self.repository.revision_tree(
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_mod_revision.NULL_REVISION))
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# The basis inventory from a repository
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basis_inv = revtrees[0].inventory
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basis_inv = self.repository.revision_tree(
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_mod_revision.NULL_REVISION).inventory
610
if len(self.parents) > 0:
611
if basis_revision_id != self.parents[0] and not ghost_basis:
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"arbitrary basis parents not yet supported with merges")
614
for revtree in revtrees[1:]:
615
for change in revtree.inventory._make_delta(basis_inv):
616
if change[1] is None:
617
# Not present in this parent.
619
if change[2] not in merged_ids:
620
if change[0] is not None:
621
basis_entry = basis_inv[change[2]]
622
merged_ids[change[2]] = [
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basis_entry.revision,
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parent_entries[change[2]] = {
629
basis_entry.revision:basis_entry,
631
change[3].revision:change[3],
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merged_ids[change[2]] = [change[3].revision]
635
parent_entries[change[2]] = {change[3].revision:change[3]}
637
merged_ids[change[2]].append(change[3].revision)
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parent_entries[change[2]][change[3].revision] = change[3]
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# Setup the changes from the tree:
642
# changes maps file_id -> (change, [parent revision_ids])
644
for change in iter_changes:
645
# This probably looks up in basis_inv way to much.
646
if change[1][0] is not None:
647
head_candidate = [basis_inv[change[0]].revision]
650
changes[change[0]] = change, merged_ids.get(change[0],
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unchanged_merged = set(merged_ids) - set(changes)
653
# Extend the changes dict with synthetic changes to record merges of
655
for file_id in unchanged_merged:
656
# Record a merged version of these items that did not change vs the
657
# basis. This can be either identical parallel changes, or a revert
658
# of a specific file after a merge. The recorded content will be
659
# that of the current tree (which is the same as the basis), but
660
# the per-file graph will reflect a merge.
661
# NB:XXX: We are reconstructing path information we had, this
662
# should be preserved instead.
663
# inv delta change: (file_id, (path_in_source, path_in_target),
664
# changed_content, versioned, parent, name, kind,
667
basis_entry = basis_inv[file_id]
668
except errors.NoSuchId:
669
# a change from basis->some_parents but file_id isn't in basis
670
# so was new in the merge, which means it must have changed
671
# from basis -> current, and as it hasn't the add was reverted
672
# by the user. So we discard this change.
676
(basis_inv.id2path(file_id), tree.id2path(file_id)),
678
(basis_entry.parent_id, basis_entry.parent_id),
679
(basis_entry.name, basis_entry.name),
680
(basis_entry.kind, basis_entry.kind),
681
(basis_entry.executable, basis_entry.executable))
682
changes[file_id] = (change, merged_ids[file_id])
683
# changes contains tuples with the change and a set of inventory
684
# candidates for the file.
686
# old_path, new_path, file_id, new_inventory_entry
687
seen_root = False # Is the root in the basis delta?
688
inv_delta = self._basis_delta
689
modified_rev = self._new_revision_id
690
for change, head_candidates in changes.values():
691
if change[3][1]: # versioned in target.
692
# Several things may be happening here:
693
# We may have a fork in the per-file graph
694
# - record a change with the content from tree
695
# We may have a change against < all trees
696
# - carry over the tree that hasn't changed
697
# We may have a change against all trees
698
# - record the change with the content from tree
701
entry = _entry_factory[kind](file_id, change[5][1],
703
head_set = self._heads(change[0], set(head_candidates))
706
for head_candidate in head_candidates:
707
if head_candidate in head_set:
708
heads.append(head_candidate)
709
head_set.remove(head_candidate)
712
# Could be a carry-over situation:
713
parent_entry_revs = parent_entries.get(file_id, None)
714
if parent_entry_revs:
715
parent_entry = parent_entry_revs.get(heads[0], None)
718
if parent_entry is None:
719
# The parent iter_changes was called against is the one
720
# that is the per-file head, so any change is relevant
721
# iter_changes is valid.
722
carry_over_possible = False
724
# could be a carry over situation
725
# A change against the basis may just indicate a merge,
726
# we need to check the content against the source of the
727
# merge to determine if it was changed after the merge
729
if (parent_entry.kind != entry.kind or
730
parent_entry.parent_id != entry.parent_id or
731
parent_entry.name != entry.name):
732
# Metadata common to all entries has changed
733
# against per-file parent
734
carry_over_possible = False
736
carry_over_possible = True
737
# per-type checks for changes against the parent_entry
740
# Cannot be a carry-over situation
741
carry_over_possible = False
742
# Populate the entry in the delta
744
# XXX: There is still a small race here: If someone reverts the content of a file
745
# after iter_changes examines and decides it has changed,
746
# we will unconditionally record a new version even if some
747
# other process reverts it while commit is running (with
748
# the revert happening after iter_changes did it's
751
entry.executable = True
753
entry.executable = False
754
if (carry_over_possible and
755
parent_entry.executable == entry.executable):
756
# Check the file length, content hash after reading
758
nostore_sha = parent_entry.text_sha1
761
file_obj, stat_value = tree.get_file_with_stat(file_id, change[1][1])
763
text = file_obj.read()
767
entry.text_sha1, entry.text_size = self._add_text_to_weave(
768
file_id, text, heads, nostore_sha)
769
yield file_id, change[1][1], (entry.text_sha1, stat_value)
770
except errors.ExistingContent:
771
# No content change against a carry_over parent
772
# Perhaps this should also yield a fs hash update?
774
entry.text_size = parent_entry.text_size
775
entry.text_sha1 = parent_entry.text_sha1
776
elif kind == 'symlink':
778
entry.symlink_target = tree.get_symlink_target(file_id)
779
if (carry_over_possible and
780
parent_entry.symlink_target == entry.symlink_target):
783
self._add_text_to_weave(change[0], '', heads, None)
784
elif kind == 'directory':
785
if carry_over_possible:
788
# Nothing to set on the entry.
789
# XXX: split into the Root and nonRoot versions.
790
if change[1][1] != '' or self.repository.supports_rich_root():
791
self._add_text_to_weave(change[0], '', heads, None)
792
elif kind == 'tree-reference':
793
if not self.repository._format.supports_tree_reference:
794
# This isn't quite sane as an error, but we shouldn't
795
# ever see this code path in practice: tree's don't
796
# permit references when the repo doesn't support tree
798
raise errors.UnsupportedOperation(tree.add_reference,
800
reference_revision = tree.get_reference_revision(change[0])
801
entry.reference_revision = reference_revision
802
if (carry_over_possible and
803
parent_entry.reference_revision == reference_revision):
806
self._add_text_to_weave(change[0], '', heads, None)
808
raise AssertionError('unknown kind %r' % kind)
810
entry.revision = modified_rev
812
entry.revision = parent_entry.revision
815
new_path = change[1][1]
816
inv_delta.append((change[1][0], new_path, change[0], entry))
819
self.new_inventory = None
821
# This should perhaps be guarded by a check that the basis we
822
# commit against is the basis for the commit and if not do a delta
824
self._any_changes = True
826
# housekeeping root entry changes do not affect no-change commits.
827
self._require_root_change(tree)
828
self.basis_delta_revision = basis_revision_id
830
def _add_text_to_weave(self, file_id, new_text, parents, nostore_sha):
831
parent_keys = tuple([(file_id, parent) for parent in parents])
832
return self.repository.texts._add_text(
833
(file_id, self._new_revision_id), parent_keys, new_text,
834
nostore_sha=nostore_sha, random_id=self.random_revid)[0:2]
837
class RootCommitBuilder(CommitBuilder):
838
"""This commitbuilder actually records the root id"""
840
# the root entry gets versioned properly by this builder.
841
_versioned_root = True
843
def _check_root(self, ie, parent_invs, tree):
844
"""Helper for record_entry_contents.
846
:param ie: An entry being added.
847
:param parent_invs: The inventories of the parent revisions of the
849
:param tree: The tree that is being committed.
852
def _require_root_change(self, tree):
853
"""Enforce an appropriate root object change.
855
This is called once when record_iter_changes is called, if and only if
856
the root was not in the delta calculated by record_iter_changes.
858
:param tree: The tree which is being committed.
860
# versioned roots do not change unless the tree found a change.
863
######################################################################
867
class Repository(_RelockDebugMixin, bzrdir.ControlComponent):
53
class Repository(object):
868
54
"""Repository holding history for one or more branches.
870
56
The repository holds and retrieves historical information including
871
57
revisions and file history. It's normally accessed only by the Branch,
872
58
which views a particular line of development through that history.
874
The Repository builds on top of some byte storage facilies (the revisions,
875
signatures, inventories, texts and chk_bytes attributes) and a Transport,
876
which respectively provide byte storage and a means to access the (possibly
60
The Repository builds on top of Stores and a Transport, which respectively
61
describe the disk data format and the way of accessing the (possibly
879
The byte storage facilities are addressed via tuples, which we refer to
880
as 'keys' throughout the code base. Revision_keys, inventory_keys and
881
signature_keys are all 1-tuples: (revision_id,). text_keys are two-tuples:
882
(file_id, revision_id). chk_bytes uses CHK keys - a 1-tuple with a single
883
byte string made up of a hash identifier and a hash value.
884
We use this interface because it allows low friction with the underlying
885
code that implements disk indices, network encoding and other parts of
888
:ivar revisions: A bzrlib.versionedfile.VersionedFiles instance containing
889
the serialised revisions for the repository. This can be used to obtain
890
revision graph information or to access raw serialised revisions.
891
The result of trying to insert data into the repository via this store
892
is undefined: it should be considered read-only except for implementors
894
:ivar signatures: A bzrlib.versionedfile.VersionedFiles instance containing
895
the serialised signatures for the repository. This can be used to
896
obtain access to raw serialised signatures. The result of trying to
897
insert data into the repository via this store is undefined: it should
898
be considered read-only except for implementors of repositories.
899
:ivar inventories: A bzrlib.versionedfile.VersionedFiles instance containing
900
the serialised inventories for the repository. This can be used to
901
obtain unserialised inventories. The result of trying to insert data
902
into the repository via this store is undefined: it should be
903
considered read-only except for implementors of repositories.
904
:ivar texts: A bzrlib.versionedfile.VersionedFiles instance containing the
905
texts of files and directories for the repository. This can be used to
906
obtain file texts or file graphs. Note that Repository.iter_file_bytes
907
is usually a better interface for accessing file texts.
908
The result of trying to insert data into the repository via this store
909
is undefined: it should be considered read-only except for implementors
911
:ivar chk_bytes: A bzrlib.versionedfile.VersionedFiles instance containing
912
any data the repository chooses to store or have indexed by its hash.
913
The result of trying to insert data into the repository via this store
914
is undefined: it should be considered read-only except for implementors
916
:ivar _transport: Transport for file access to repository, typically
917
pointing to .bzr/repository.
920
# What class to use for a CommitBuilder. Often its simpler to change this
921
# in a Repository class subclass rather than to override
922
# get_commit_builder.
923
_commit_builder_class = CommitBuilder
924
# The search regex used by xml based repositories to determine what things
925
# where changed in a single commit.
926
_file_ids_altered_regex = lazy_regex.lazy_compile(
927
r'file_id="(?P<file_id>[^"]+)"'
928
r'.* revision="(?P<revision_id>[^"]+)"'
931
def abort_write_group(self, suppress_errors=False):
932
"""Commit the contents accrued within the current write group.
934
:param suppress_errors: if true, abort_write_group will catch and log
935
unexpected errors that happen during the abort, rather than
936
allowing them to propagate. Defaults to False.
938
:seealso: start_write_group.
940
if self._write_group is not self.get_transaction():
941
# has an unlock or relock occured ?
944
'(suppressed) mismatched lock context and write group. %r, %r',
945
self._write_group, self.get_transaction())
947
raise errors.BzrError(
948
'mismatched lock context and write group. %r, %r' %
949
(self._write_group, self.get_transaction()))
951
self._abort_write_group()
952
except Exception, exc:
953
self._write_group = None
954
if not suppress_errors:
956
mutter('abort_write_group failed')
957
log_exception_quietly()
958
note('bzr: ERROR (ignored): %s', exc)
959
self._write_group = None
961
def _abort_write_group(self):
962
"""Template method for per-repository write group cleanup.
964
This is called during abort before the write group is considered to be
965
finished and should cleanup any internal state accrued during the write
966
group. There is no requirement that data handed to the repository be
967
*not* made available - this is not a rollback - but neither should any
968
attempt be made to ensure that data added is fully commited. Abort is
969
invoked when an error has occured so futher disk or network operations
970
may not be possible or may error and if possible should not be
974
def add_fallback_repository(self, repository):
975
"""Add a repository to use for looking up data not held locally.
977
:param repository: A repository.
979
if not self._format.supports_external_lookups:
980
raise errors.UnstackableRepositoryFormat(self._format, self.base)
982
# This repository will call fallback.unlock() when we transition to
983
# the unlocked state, so we make sure to increment the lock count
984
repository.lock_read()
985
self._check_fallback_repository(repository)
986
self._fallback_repositories.append(repository)
987
self.texts.add_fallback_versioned_files(repository.texts)
988
self.inventories.add_fallback_versioned_files(repository.inventories)
989
self.revisions.add_fallback_versioned_files(repository.revisions)
990
self.signatures.add_fallback_versioned_files(repository.signatures)
991
if self.chk_bytes is not None:
992
self.chk_bytes.add_fallback_versioned_files(repository.chk_bytes)
994
def _check_fallback_repository(self, repository):
995
"""Check that this repository can fallback to repository safely.
997
Raise an error if not.
999
:param repository: A repository to fallback to.
1001
return InterRepository._assert_same_model(self, repository)
1003
def add_inventory(self, revision_id, inv, parents):
1004
"""Add the inventory inv to the repository as revision_id.
1006
:param parents: The revision ids of the parents that revision_id
66
def add_inventory(self, revid, inv, parents):
67
"""Add the inventory inv to the repository as revid.
69
:param parents: The revision ids of the parents that revid
1007
70
is known to have and are in the repository already.
1009
:returns: The validator(which is a sha1 digest, though what is sha'd is
1010
repository format specific) of the serialized inventory.
1012
if not self.is_in_write_group():
1013
raise AssertionError("%r not in write group" % (self,))
1014
_mod_revision.check_not_reserved_id(revision_id)
1015
if not (inv.revision_id is None or inv.revision_id == revision_id):
1016
raise AssertionError(
1017
"Mismatch between inventory revision"
1018
" id and insertion revid (%r, %r)"
1019
% (inv.revision_id, revision_id))
1020
if inv.root is None:
1021
raise AssertionError()
1022
return self._add_inventory_checked(revision_id, inv, parents)
1024
def _add_inventory_checked(self, revision_id, inv, parents):
1025
"""Add inv to the repository after checking the inputs.
1027
This function can be overridden to allow different inventory styles.
1029
:seealso: add_inventory, for the contract.
1031
inv_lines = self._serializer.write_inventory_to_lines(inv)
1032
return self._inventory_add_lines(revision_id, parents,
1033
inv_lines, check_content=False)
1035
def add_inventory_by_delta(self, basis_revision_id, delta, new_revision_id,
1036
parents, basis_inv=None, propagate_caches=False):
1037
"""Add a new inventory expressed as a delta against another revision.
1039
See the inventory developers documentation for the theory behind
1042
:param basis_revision_id: The inventory id the delta was created
1043
against. (This does not have to be a direct parent.)
1044
:param delta: The inventory delta (see Inventory.apply_delta for
1046
:param new_revision_id: The revision id that the inventory is being
1048
:param parents: The revision ids of the parents that revision_id is
1049
known to have and are in the repository already. These are supplied
1050
for repositories that depend on the inventory graph for revision
1051
graph access, as well as for those that pun ancestry with delta
1053
:param basis_inv: The basis inventory if it is already known,
1055
:param propagate_caches: If True, the caches for this inventory are
1056
copied to and updated for the result if possible.
1058
:returns: (validator, new_inv)
1059
The validator(which is a sha1 digest, though what is sha'd is
1060
repository format specific) of the serialized inventory, and the
1061
resulting inventory.
1063
if not self.is_in_write_group():
1064
raise AssertionError("%r not in write group" % (self,))
1065
_mod_revision.check_not_reserved_id(new_revision_id)
1066
basis_tree = self.revision_tree(basis_revision_id)
1067
basis_tree.lock_read()
1069
# Note that this mutates the inventory of basis_tree, which not all
1070
# inventory implementations may support: A better idiom would be to
1071
# return a new inventory, but as there is no revision tree cache in
1072
# repository this is safe for now - RBC 20081013
1073
if basis_inv is None:
1074
basis_inv = basis_tree.inventory
1075
basis_inv.apply_delta(delta)
1076
basis_inv.revision_id = new_revision_id
1077
return (self.add_inventory(new_revision_id, basis_inv, parents),
1082
def _inventory_add_lines(self, revision_id, parents, lines,
1083
check_content=True):
1084
"""Store lines in inv_vf and return the sha1 of the inventory."""
1085
parents = [(parent,) for parent in parents]
1086
result = self.inventories.add_lines((revision_id,), parents, lines,
1087
check_content=check_content)[0]
1088
self.inventories._access.flush()
1091
def add_revision(self, revision_id, rev, inv=None, config=None):
1092
"""Add rev to the revision store as revision_id.
1094
:param revision_id: the revision id to use.
72
returns the sha1 of the serialized inventory.
74
assert inv.revision_id is None or inv.revision_id == revid, \
75
"Mismatch between inventory revision" \
76
" id and insertion revid (%r, %r)" % (inv.revision_id, revid)
77
assert inv.root is not None
78
inv_text = xml5.serializer_v5.write_inventory_to_string(inv)
79
inv_sha1 = osutils.sha_string(inv_text)
80
inv_vf = self.control_weaves.get_weave('inventory',
81
self.get_transaction())
82
self._inventory_add_lines(inv_vf, revid, parents, osutils.split_lines(inv_text))
85
def _inventory_add_lines(self, inv_vf, revid, parents, lines):
87
for parent in parents:
89
final_parents.append(parent)
91
inv_vf.add_lines(revid, final_parents, lines)
94
def add_revision(self, rev_id, rev, inv=None, config=None):
95
"""Add rev to the revision store as rev_id.
97
:param rev_id: the revision id to use.
1095
98
:param rev: The revision object.
1096
99
:param inv: The inventory for the revision. if None, it will be looked
1097
100
up in the inventory storer
1163
159
Returns a set of the present revisions.
1166
graph = self.get_graph()
1167
parent_map = graph.get_parent_map(revision_ids)
1168
# The old API returned a list, should this actually be a set?
1169
return parent_map.keys()
1171
def _check_inventories(self, checker):
1172
"""Check the inventories found from the revision scan.
1174
This is responsible for verifying the sha1 of inventories and
1175
creating a pending_keys set that covers data referenced by inventories.
1177
bar = ui.ui_factory.nested_progress_bar()
1179
self._do_check_inventories(checker, bar)
1183
def _do_check_inventories(self, checker, bar):
1184
"""Helper for _check_inventories."""
1186
keys = {'chk_bytes':set(), 'inventories':set(), 'texts':set()}
1187
kinds = ['chk_bytes', 'texts']
1188
count = len(checker.pending_keys)
1189
bar.update("inventories", 0, 2)
1190
current_keys = checker.pending_keys
1191
checker.pending_keys = {}
1192
# Accumulate current checks.
1193
for key in current_keys:
1194
if key[0] != 'inventories' and key[0] not in kinds:
1195
checker._report_items.append('unknown key type %r' % (key,))
1196
keys[key[0]].add(key[1:])
1197
if keys['inventories']:
1198
# NB: output order *should* be roughly sorted - topo or
1199
# inverse topo depending on repository - either way decent
1200
# to just delta against. However, pre-CHK formats didn't
1201
# try to optimise inventory layout on disk. As such the
1202
# pre-CHK code path does not use inventory deltas.
1204
for record in self.inventories.check(keys=keys['inventories']):
1205
if record.storage_kind == 'absent':
1206
checker._report_items.append(
1207
'Missing inventory {%s}' % (record.key,))
1209
last_object = self._check_record('inventories', record,
1210
checker, last_object,
1211
current_keys[('inventories',) + record.key])
1212
del keys['inventories']
1215
bar.update("texts", 1)
1216
while (checker.pending_keys or keys['chk_bytes']
1218
# Something to check.
1219
current_keys = checker.pending_keys
1220
checker.pending_keys = {}
1221
# Accumulate current checks.
1222
for key in current_keys:
1223
if key[0] not in kinds:
1224
checker._report_items.append('unknown key type %r' % (key,))
1225
keys[key[0]].add(key[1:])
1226
# Check the outermost kind only - inventories || chk_bytes || texts
1230
for record in getattr(self, kind).check(keys=keys[kind]):
1231
if record.storage_kind == 'absent':
1232
checker._report_items.append(
1233
'Missing %s {%s}' % (kind, record.key,))
1235
last_object = self._check_record(kind, record,
1236
checker, last_object, current_keys[(kind,) + record.key])
1240
def _check_record(self, kind, record, checker, last_object, item_data):
1241
"""Check a single text from this repository."""
1242
if kind == 'inventories':
1243
rev_id = record.key[0]
1244
inv = self._deserialise_inventory(rev_id,
1245
record.get_bytes_as('fulltext'))
1246
if last_object is not None:
1247
delta = inv._make_delta(last_object)
1248
for old_path, path, file_id, ie in delta:
1251
ie.check(checker, rev_id, inv)
1253
for path, ie in inv.iter_entries():
1254
ie.check(checker, rev_id, inv)
1255
if self._format.fast_deltas:
1257
elif kind == 'chk_bytes':
1258
# No code written to check chk_bytes for this repo format.
1259
checker._report_items.append(
1260
'unsupported key type chk_bytes for %s' % (record.key,))
1261
elif kind == 'texts':
1262
self._check_text(record, checker, item_data)
1264
checker._report_items.append(
1265
'unknown key type %s for %s' % (kind, record.key))
1267
def _check_text(self, record, checker, item_data):
1268
"""Check a single text."""
1269
# Check it is extractable.
1270
# TODO: check length.
1271
if record.storage_kind == 'chunked':
1272
chunks = record.get_bytes_as(record.storage_kind)
1273
sha1 = osutils.sha_strings(chunks)
1274
length = sum(map(len, chunks))
1276
content = record.get_bytes_as('fulltext')
1277
sha1 = osutils.sha_string(content)
1278
length = len(content)
1279
if item_data and sha1 != item_data[1]:
1280
checker._report_items.append(
1281
'sha1 mismatch: %s has sha1 %s expected %s referenced by %s' %
1282
(record.key, sha1, item_data[1], item_data[2]))
162
for id in revision_ids:
163
if self.has_revision(id):
1285
168
def create(a_bzrdir):
1286
169
"""Construct the current default format repository in a_bzrdir."""
1287
170
return RepositoryFormat.get_default_format().initialize(a_bzrdir)
1289
def __init__(self, _format, a_bzrdir, control_files):
172
def __init__(self, _format, a_bzrdir, control_files, _revision_store, control_store, text_store):
1290
173
"""instantiate a Repository.
1292
175
:param _format: The format of the repository on disk.
1293
176
:param a_bzrdir: The BzrDir of the repository.
178
In the future we will have a single api for all stores for
179
getting file texts, inventories and revisions, then
180
this construct will accept instances of those things.
1295
# In the future we will have a single api for all stores for
1296
# getting file texts, inventories and revisions, then
1297
# this construct will accept instances of those things.
1298
182
super(Repository, self).__init__()
1299
183
self._format = _format
1300
184
# the following are part of the public API for Repository:
1301
185
self.bzrdir = a_bzrdir
1302
186
self.control_files = control_files
1303
self._transport = control_files._transport
1304
self.base = self._transport.base
1306
self._reconcile_does_inventory_gc = True
1307
self._reconcile_fixes_text_parents = False
1308
self._reconcile_backsup_inventory = True
1309
self._write_group = None
1310
# Additional places to query for data.
1311
self._fallback_repositories = []
1312
# An InventoryEntry cache, used during deserialization
1313
self._inventory_entry_cache = fifo_cache.FIFOCache(10*1024)
1314
# Is it safe to return inventory entries directly from the entry cache,
1315
# rather copying them?
1316
self._safe_to_return_from_cache = False
1319
def user_transport(self):
1320
return self.bzrdir.user_transport
1323
def control_transport(self):
1324
return self._transport
187
self._revision_store = _revision_store
188
self.text_store = text_store
189
# backwards compatibility
190
self.weave_store = text_store
191
# not right yet - should be more semantically clear ?
193
self.control_store = control_store
194
self.control_weaves = control_store
195
# TODO: make sure to construct the right store classes, etc, depending
196
# on whether escaping is required.
197
self._warn_if_deprecated()
1326
199
def __repr__(self):
1327
if self._fallback_repositories:
1328
return '%s(%r, fallback_repositories=%r)' % (
1329
self.__class__.__name__,
1331
self._fallback_repositories)
1333
return '%s(%r)' % (self.__class__.__name__,
1336
def _has_same_fallbacks(self, other_repo):
1337
"""Returns true if the repositories have the same fallbacks."""
1338
my_fb = self._fallback_repositories
1339
other_fb = other_repo._fallback_repositories
1340
if len(my_fb) != len(other_fb):
1342
for f, g in zip(my_fb, other_fb):
1343
if not f.has_same_location(g):
1347
def has_same_location(self, other):
1348
"""Returns a boolean indicating if this repository is at the same
1349
location as another repository.
1351
This might return False even when two repository objects are accessing
1352
the same physical repository via different URLs.
1354
if self.__class__ is not other.__class__:
1356
return (self._transport.base == other._transport.base)
1358
def is_in_write_group(self):
1359
"""Return True if there is an open write group.
1361
:seealso: start_write_group.
1363
return self._write_group is not None
200
return '%s(%r)' % (self.__class__.__name__,
201
self.bzrdir.transport.base)
1365
203
def is_locked(self):
1366
204
return self.control_files.is_locked()
1368
def is_write_locked(self):
1369
"""Return True if this object is write locked."""
1370
return self.is_locked() and self.control_files._lock_mode == 'w'
1372
def lock_write(self, token=None):
1373
"""Lock this repository for writing.
1375
This causes caching within the repository obejct to start accumlating
1376
data during reads, and allows a 'write_group' to be obtained. Write
1377
groups must be used for actual data insertion.
1379
:param token: if this is already locked, then lock_write will fail
1380
unless the token matches the existing lock.
1381
:returns: a token if this instance supports tokens, otherwise None.
1382
:raises TokenLockingNotSupported: when a token is given but this
1383
instance doesn't support using token locks.
1384
:raises MismatchedToken: if the specified token doesn't match the token
1385
of the existing lock.
1386
:seealso: start_write_group.
1388
A token should be passed in if you know that you have locked the object
1389
some other way, and need to synchronise this object's state with that
1392
XXX: this docstring is duplicated in many places, e.g. lockable_files.py
1394
locked = self.is_locked()
1395
result = self.control_files.lock_write(token=token)
1397
self._warn_if_deprecated()
1398
self._note_lock('w')
1399
for repo in self._fallback_repositories:
1400
# Writes don't affect fallback repos
1402
self._refresh_data()
206
def lock_write(self):
207
self.control_files.lock_write()
1405
209
def lock_read(self):
1406
locked = self.is_locked()
1407
210
self.control_files.lock_read()
1409
self._warn_if_deprecated()
1410
self._note_lock('r')
1411
for repo in self._fallback_repositories:
1413
self._refresh_data()
1415
212
def get_physical_lock_status(self):
1416
213
return self.control_files.get_physical_lock_status()
1418
def leave_lock_in_place(self):
1419
"""Tell this repository not to release the physical lock when this
1422
If lock_write doesn't return a token, then this method is not supported.
1424
self.control_files.leave_in_place()
1426
def dont_leave_lock_in_place(self):
1427
"""Tell this repository to release the physical lock when this
1428
object is unlocked, even if it didn't originally acquire it.
1430
If lock_write doesn't return a token, then this method is not supported.
1432
self.control_files.dont_leave_in_place()
1435
def gather_stats(self, revid=None, committers=None):
1436
"""Gather statistics from a revision id.
1438
:param revid: The revision id to gather statistics from, if None, then
1439
no revision specific statistics are gathered.
1440
:param committers: Optional parameter controlling whether to grab
1441
a count of committers from the revision specific statistics.
1442
:return: A dictionary of statistics. Currently this contains:
1443
committers: The number of committers if requested.
1444
firstrev: A tuple with timestamp, timezone for the penultimate left
1445
most ancestor of revid, if revid is not the NULL_REVISION.
1446
latestrev: A tuple with timestamp, timezone for revid, if revid is
1447
not the NULL_REVISION.
1448
revisions: The total revision count in the repository.
1449
size: An estimate disk size of the repository in bytes.
1452
if revid and committers:
1453
result['committers'] = 0
1454
if revid and revid != _mod_revision.NULL_REVISION:
1456
all_committers = set()
1457
revisions = self.get_ancestry(revid)
1458
# pop the leading None
1460
first_revision = None
1462
# ignore the revisions in the middle - just grab first and last
1463
revisions = revisions[0], revisions[-1]
1464
for revision in self.get_revisions(revisions):
1465
if not first_revision:
1466
first_revision = revision
1468
all_committers.add(revision.committer)
1469
last_revision = revision
1471
result['committers'] = len(all_committers)
1472
result['firstrev'] = (first_revision.timestamp,
1473
first_revision.timezone)
1474
result['latestrev'] = (last_revision.timestamp,
1475
last_revision.timezone)
1477
# now gather global repository information
1478
# XXX: This is available for many repos regardless of listability.
1479
if self.user_transport.listable():
1480
# XXX: do we want to __define len__() ?
1481
# Maybe the versionedfiles object should provide a different
1482
# method to get the number of keys.
1483
result['revisions'] = len(self.revisions.keys())
1484
# result['size'] = t
1487
def find_branches(self, using=False):
1488
"""Find branches underneath this repository.
1490
This will include branches inside other branches.
1492
:param using: If True, list only branches using this repository.
1494
if using and not self.is_shared():
1495
return self.bzrdir.list_branches()
1496
class Evaluator(object):
1499
self.first_call = True
1501
def __call__(self, bzrdir):
1502
# On the first call, the parameter is always the bzrdir
1503
# containing the current repo.
1504
if not self.first_call:
1506
repository = bzrdir.open_repository()
1507
except errors.NoRepositoryPresent:
1510
return False, ([], repository)
1511
self.first_call = False
1512
value = (bzrdir.list_branches(), None)
1516
for branches, repository in bzrdir.BzrDir.find_bzrdirs(
1517
self.user_transport, evaluate=Evaluator()):
1518
if branches is not None:
1519
ret.extend(branches)
1520
if not using and repository is not None:
1521
ret.extend(repository.find_branches())
1525
def search_missing_revision_ids(self, other, revision_id=None, find_ghosts=True):
216
def missing_revision_ids(self, other, revision_id=None):
1526
217
"""Return the revision ids that other has that this does not.
1528
219
These are returned in topological order.
1530
221
revision_id: only return revision ids included by revision_id.
1532
return InterRepository.get(other, self).search_missing_revision_ids(
1533
revision_id, find_ghosts)
223
return InterRepository.get(other, self).missing_revision_ids(revision_id)
1722
262
:param revprops: Optional dictionary of revision properties.
1723
263
:param revision_id: Optional revision id.
1725
if self._fallback_repositories:
1726
raise errors.BzrError("Cannot commit from a lightweight checkout "
1727
"to a stacked branch. See "
1728
"https://bugs.launchpad.net/bzr/+bug/375013 for details.")
1729
result = self._commit_builder_class(self, parents, config,
1730
timestamp, timezone, committer, revprops, revision_id)
1731
self.start_write_group()
265
return _CommitBuilder(self, parents, config, timestamp, timezone,
266
committer, revprops, revision_id)
1734
@only_raises(errors.LockNotHeld, errors.LockBroken)
1735
268
def unlock(self):
1736
if (self.control_files._lock_count == 1 and
1737
self.control_files._lock_mode == 'w'):
1738
if self._write_group is not None:
1739
self.abort_write_group()
1740
self.control_files.unlock()
1741
raise errors.BzrError(
1742
'Must end write groups before releasing write locks.')
1743
269
self.control_files.unlock()
1744
if self.control_files._lock_count == 0:
1745
self._inventory_entry_cache.clear()
1746
for repo in self._fallback_repositories:
1749
271
@needs_read_lock
1750
def clone(self, a_bzrdir, revision_id=None):
272
def clone(self, a_bzrdir, revision_id=None, basis=None):
1751
273
"""Clone this repository into a_bzrdir using the current format.
1753
275
Currently no check is made that the format of this repository and
1754
276
the bzrdir format are compatible. FIXME RBC 20060201.
1756
:return: The newly created destination repository.
1758
# TODO: deprecate after 0.16; cloning this with all its settings is
1759
# probably not very useful -- mbp 20070423
1760
dest_repo = self._create_sprouting_repo(a_bzrdir, shared=self.is_shared())
1761
self.copy_content_into(dest_repo, revision_id)
1764
def start_write_group(self):
1765
"""Start a write group in the repository.
1767
Write groups are used by repositories which do not have a 1:1 mapping
1768
between file ids and backend store to manage the insertion of data from
1769
both fetch and commit operations.
1771
A write lock is required around the start_write_group/commit_write_group
1772
for the support of lock-requiring repository formats.
1774
One can only insert data into a repository inside a write group.
1778
if not self.is_write_locked():
1779
raise errors.NotWriteLocked(self)
1780
if self._write_group:
1781
raise errors.BzrError('already in a write group')
1782
self._start_write_group()
1783
# so we can detect unlock/relock - the write group is now entered.
1784
self._write_group = self.get_transaction()
1786
def _start_write_group(self):
1787
"""Template method for per-repository write group startup.
1789
This is called before the write group is considered to be
1794
def sprout(self, to_bzrdir, revision_id=None):
1795
"""Create a descendent repository for new development.
1797
Unlike clone, this does not copy the settings of the repository.
1799
dest_repo = self._create_sprouting_repo(to_bzrdir, shared=False)
1800
dest_repo.fetch(self, revision_id=revision_id)
1803
def _create_sprouting_repo(self, a_bzrdir, shared):
1804
278
if not isinstance(a_bzrdir._format, self.bzrdir._format.__class__):
1805
279
# use target default format.
1806
dest_repo = a_bzrdir.create_repository()
280
result = a_bzrdir.create_repository()
281
# FIXME RBC 20060209 split out the repository type to avoid this check ?
282
elif isinstance(a_bzrdir._format,
283
(bzrdir.BzrDirFormat4,
284
bzrdir.BzrDirFormat5,
285
bzrdir.BzrDirFormat6)):
286
result = a_bzrdir.open_repository()
1808
# Most control formats need the repository to be specifically
1809
# created, but on some old all-in-one formats it's not needed
1811
dest_repo = self._format.initialize(a_bzrdir, shared=shared)
1812
except errors.UninitializableFormat:
1813
dest_repo = a_bzrdir.open_repository()
1816
def _get_sink(self):
1817
"""Return a sink for streaming into this repository."""
1818
return StreamSink(self)
1820
def _get_source(self, to_format):
1821
"""Return a source for streaming from this repository."""
1822
return StreamSource(self, to_format)
288
result = self._format.initialize(a_bzrdir, shared=self.is_shared())
289
self.copy_content_into(result, revision_id, basis)
1824
292
@needs_read_lock
1825
293
def has_revision(self, revision_id):
1826
294
"""True if this repository has a copy of the revision."""
1827
return revision_id in self.has_revisions((revision_id,))
1830
def has_revisions(self, revision_ids):
1831
"""Probe to find out the presence of multiple revisions.
1833
:param revision_ids: An iterable of revision_ids.
1834
:return: A set of the revision_ids that were present.
1836
parent_map = self.revisions.get_parent_map(
1837
[(rev_id,) for rev_id in revision_ids])
1839
if _mod_revision.NULL_REVISION in revision_ids:
1840
result.add(_mod_revision.NULL_REVISION)
1841
result.update([key[0] for key in parent_map])
1845
def get_revision(self, revision_id):
1846
"""Return the Revision object for a named revision."""
1847
return self.get_revisions([revision_id])[0]
295
return self._revision_store.has_revision_id(revision_id,
296
self.get_transaction())
1849
298
@needs_read_lock
1850
299
def get_revision_reconcile(self, revision_id):
1851
300
"""'reconcile' helper routine that allows access to a revision always.
1853
302
This variant of get_revision does not cross check the weave graph
1854
303
against the revision one as get_revision does: but it should only
1855
304
be used by reconcile, or reconcile-alike commands that are correcting
1856
305
or testing the revision graph.
1858
return self._get_revisions([revision_id])[0]
307
if not revision_id or not isinstance(revision_id, basestring):
308
raise InvalidRevisionId(revision_id=revision_id, branch=self)
309
return self._revision_store.get_revisions([revision_id],
310
self.get_transaction())[0]
1860
311
@needs_read_lock
1861
312
def get_revisions(self, revision_ids):
1862
"""Get many revisions at once.
1864
Repositories that need to check data on every revision read should
1865
subclass this method.
1867
return self._get_revisions(revision_ids)
1870
def _get_revisions(self, revision_ids):
1871
"""Core work logic to get many revisions without sanity checks."""
1873
for revid, rev in self._iter_revisions(revision_ids):
1875
raise errors.NoSuchRevision(self, revid)
1877
return [revs[revid] for revid in revision_ids]
1879
def _iter_revisions(self, revision_ids):
1880
"""Iterate over revision objects.
1882
:param revision_ids: An iterable of revisions to examine. None may be
1883
passed to request all revisions known to the repository. Note that
1884
not all repositories can find unreferenced revisions; for those
1885
repositories only referenced ones will be returned.
1886
:return: An iterator of (revid, revision) tuples. Absent revisions (
1887
those asked for but not available) are returned as (revid, None).
1889
if revision_ids is None:
1890
revision_ids = self.all_revision_ids()
1892
for rev_id in revision_ids:
1893
if not rev_id or not isinstance(rev_id, basestring):
1894
raise errors.InvalidRevisionId(revision_id=rev_id, branch=self)
1895
keys = [(key,) for key in revision_ids]
1896
stream = self.revisions.get_record_stream(keys, 'unordered', True)
1897
for record in stream:
1898
revid = record.key[0]
1899
if record.storage_kind == 'absent':
1902
text = record.get_bytes_as('fulltext')
1903
rev = self._serializer.read_revision_from_string(text)
1906
def get_deltas_for_revisions(self, revisions, specific_fileids=None):
313
return self._revision_store.get_revisions(revision_ids,
314
self.get_transaction())
317
def get_revision_xml(self, revision_id):
318
rev = self.get_revision(revision_id)
320
# the current serializer..
321
self._revision_store._serializer.write_revision(rev, rev_tmp)
323
return rev_tmp.getvalue()
326
def get_revision(self, revision_id):
327
"""Return the Revision object for a named revision"""
328
r = self.get_revision_reconcile(revision_id)
329
# weave corruption can lead to absent revision markers that should be
331
# the following test is reasonably cheap (it needs a single weave read)
332
# and the weave is cached in read transactions. In write transactions
333
# it is not cached but typically we only read a small number of
334
# revisions. For knits when they are introduced we will probably want
335
# to ensure that caching write transactions are in use.
336
inv = self.get_inventory_weave()
337
self._check_revision_parents(r, inv)
341
def get_deltas_for_revisions(self, revisions):
1907
342
"""Produce a generator of revision deltas.
1909
344
Note that the input is a sequence of REVISIONS, not revision_ids.
1910
345
Trees will be held in memory until the generator exits.
1911
346
Each delta is relative to the revision's lefthand predecessor.
1913
:param specific_fileids: if not None, the result is filtered
1914
so that only those file-ids, their parents and their
1915
children are included.
1917
# Get the revision-ids of interest
1918
348
required_trees = set()
1919
349
for revision in revisions:
1920
350
required_trees.add(revision.revision_id)
1921
351
required_trees.update(revision.parent_ids[:1])
1923
# Get the matching filtered trees. Note that it's more
1924
# efficient to pass filtered trees to changes_from() rather
1925
# than doing the filtering afterwards. changes_from() could
1926
# arguably do the filtering itself but it's path-based, not
1927
# file-id based, so filtering before or afterwards is
1929
if specific_fileids is None:
1930
trees = dict((t.get_revision_id(), t) for
1931
t in self.revision_trees(required_trees))
1933
trees = dict((t.get_revision_id(), t) for
1934
t in self._filtered_revision_trees(required_trees,
1937
# Calculate the deltas
352
trees = dict((t.get_revision_id(), t) for
353
t in self.revision_trees(required_trees))
1938
354
for revision in revisions:
1939
355
if not revision.parent_ids:
1940
old_tree = self.revision_tree(_mod_revision.NULL_REVISION)
356
old_tree = self.revision_tree(None)
1942
358
old_tree = trees[revision.parent_ids[0]]
1943
359
yield trees[revision.revision_id].changes_from(old_tree)
1945
361
@needs_read_lock
1946
def get_revision_delta(self, revision_id, specific_fileids=None):
362
def get_revision_delta(self, revision_id):
1947
363
"""Return the delta for one revision.
1949
365
The delta is relative to the left-hand predecessor of the
1952
:param specific_fileids: if not None, the result is filtered
1953
so that only those file-ids, their parents and their
1954
children are included.
1956
368
r = self.get_revision(revision_id)
1957
return list(self.get_deltas_for_revisions([r],
1958
specific_fileids=specific_fileids))[0]
369
return list(self.get_deltas_for_revisions([r]))[0]
371
def _check_revision_parents(self, revision, inventory):
372
"""Private to Repository and Fetch.
374
This checks the parentage of revision in an inventory weave for
375
consistency and is only applicable to inventory-weave-for-ancestry
376
using repository formats & fetchers.
378
weave_parents = inventory.get_parents(revision.revision_id)
379
weave_names = inventory.versions()
380
for parent_id in revision.parent_ids:
381
if parent_id in weave_names:
382
# this parent must not be a ghost.
383
if not parent_id in weave_parents:
385
raise errors.CorruptRepository(self)
1960
387
@needs_write_lock
1961
388
def store_revision_signature(self, gpg_strategy, plaintext, revision_id):
1962
389
signature = gpg_strategy.sign(plaintext)
1963
self.add_signature_text(revision_id, signature)
1966
def add_signature_text(self, revision_id, signature):
1967
self.signatures.add_lines((revision_id,), (),
1968
osutils.split_lines(signature))
1970
def find_text_key_references(self):
1971
"""Find the text key references within the repository.
1973
:return: A dictionary mapping text keys ((fileid, revision_id) tuples)
1974
to whether they were referred to by the inventory of the
1975
revision_id that they contain. The inventory texts from all present
1976
revision ids are assessed to generate this report.
1978
revision_keys = self.revisions.keys()
1979
w = self.inventories
1980
pb = ui.ui_factory.nested_progress_bar()
1982
return self._find_text_key_references_from_xml_inventory_lines(
1983
w.iter_lines_added_or_present_in_keys(revision_keys, pb=pb))
1987
def _find_text_key_references_from_xml_inventory_lines(self,
1989
"""Core routine for extracting references to texts from inventories.
1991
This performs the translation of xml lines to revision ids.
1993
:param line_iterator: An iterator of lines, origin_version_id
1994
:return: A dictionary mapping text keys ((fileid, revision_id) tuples)
1995
to whether they were referred to by the inventory of the
1996
revision_id that they contain. Note that if that revision_id was
1997
not part of the line_iterator's output then False will be given -
1998
even though it may actually refer to that key.
2000
if not self._serializer.support_altered_by_hack:
2001
raise AssertionError(
2002
"_find_text_key_references_from_xml_inventory_lines only "
2003
"supported for branches which store inventory as unnested xml"
2004
", not on %r" % self)
390
self._revision_store.add_revision_signature_text(revision_id,
392
self.get_transaction())
394
def fileids_altered_by_revision_ids(self, revision_ids):
395
"""Find the file ids and versions affected by revisions.
397
:param revisions: an iterable containing revision ids.
398
:return: a dictionary mapping altered file-ids to an iterable of
399
revision_ids. Each altered file-ids has the exact revision_ids that
400
altered it listed explicitly.
402
assert isinstance(self._format, (RepositoryFormat5,
405
RepositoryFormatKnit1)), \
406
("fileids_altered_by_revision_ids only supported for branches "
407
"which store inventory as unnested xml, not on %r" % self)
408
selected_revision_ids = set(revision_ids)
409
w = self.get_inventory_weave()
2007
412
# this code needs to read every new line in every inventory for the
2008
413
# inventories [revision_ids]. Seeing a line twice is ok. Seeing a line
2009
# not present in one of those inventories is unnecessary but not
414
# not present in one of those inventories is unnecessary but not
2010
415
# harmful because we are filtering by the revision id marker in the
2011
# inventory lines : we only select file ids altered in one of those
416
# inventory lines : we only select file ids altered in one of those
2012
417
# revisions. We don't need to see all lines in the inventory because
2013
418
# only those added in an inventory in rev X can contain a revision=X
2015
unescape_revid_cache = {}
2016
unescape_fileid_cache = {}
2018
# jam 20061218 In a big fetch, this handles hundreds of thousands
2019
# of lines, so it has had a lot of inlining and optimizing done.
2020
# Sorry that it is a little bit messy.
2021
# Move several functions to be local variables, since this is a long
2023
search = self._file_ids_altered_regex.search
2024
unescape = _unescape_xml
2025
setdefault = result.setdefault
2026
for line, line_key in line_iterator:
2027
match = search(line)
2030
# One call to match.group() returning multiple items is quite a
2031
# bit faster than 2 calls to match.group() each returning 1
2032
file_id, revision_id = match.group('file_id', 'revision_id')
2034
# Inlining the cache lookups helps a lot when you make 170,000
2035
# lines and 350k ids, versus 8.4 unique ids.
2036
# Using a cache helps in 2 ways:
2037
# 1) Avoids unnecessary decoding calls
2038
# 2) Re-uses cached strings, which helps in future set and
2040
# (2) is enough that removing encoding entirely along with
2041
# the cache (so we are using plain strings) results in no
2042
# performance improvement.
2044
revision_id = unescape_revid_cache[revision_id]
2046
unescaped = unescape(revision_id)
2047
unescape_revid_cache[revision_id] = unescaped
2048
revision_id = unescaped
2050
# Note that unconditionally unescaping means that we deserialise
2051
# every fileid, which for general 'pull' is not great, but we don't
2052
# really want to have some many fulltexts that this matters anyway.
2055
file_id = unescape_fileid_cache[file_id]
2057
unescaped = unescape(file_id)
2058
unescape_fileid_cache[file_id] = unescaped
2061
key = (file_id, revision_id)
2062
setdefault(key, False)
2063
if revision_id == line_key[-1]:
2067
def _inventory_xml_lines_for_keys(self, keys):
2068
"""Get a line iterator of the sort needed for findind references.
2070
Not relevant for non-xml inventory repositories.
2072
Ghosts in revision_keys are ignored.
2074
:param revision_keys: The revision keys for the inventories to inspect.
2075
:return: An iterator over (inventory line, revid) for the fulltexts of
2076
all of the xml inventories specified by revision_keys.
2078
stream = self.inventories.get_record_stream(keys, 'unordered', True)
2079
for record in stream:
2080
if record.storage_kind != 'absent':
2081
chunks = record.get_bytes_as('chunked')
2082
revid = record.key[-1]
2083
lines = osutils.chunks_to_lines(chunks)
2087
def _find_file_ids_from_xml_inventory_lines(self, line_iterator,
2089
"""Helper routine for fileids_altered_by_revision_ids.
2091
This performs the translation of xml lines to revision ids.
2093
:param line_iterator: An iterator of lines, origin_version_id
2094
:param revision_keys: The revision ids to filter for. This should be a
2095
set or other type which supports efficient __contains__ lookups, as
2096
the revision key from each parsed line will be looked up in the
2097
revision_keys filter.
2098
:return: a dictionary mapping altered file-ids to an iterable of
2099
revision_ids. Each altered file-ids has the exact revision_ids that
2100
altered it listed explicitly.
2102
seen = set(self._find_text_key_references_from_xml_inventory_lines(
2103
line_iterator).iterkeys())
2104
parent_keys = self._find_parent_keys_of_revisions(revision_keys)
2105
parent_seen = set(self._find_text_key_references_from_xml_inventory_lines(
2106
self._inventory_xml_lines_for_keys(parent_keys)))
2107
new_keys = seen - parent_seen
2109
setdefault = result.setdefault
2110
for key in new_keys:
2111
setdefault(key[0], set()).add(key[-1])
2114
def _find_parent_ids_of_revisions(self, revision_ids):
2115
"""Find all parent ids that are mentioned in the revision graph.
2117
:return: set of revisions that are parents of revision_ids which are
2118
not part of revision_ids themselves
2120
parent_map = self.get_parent_map(revision_ids)
2122
map(parent_ids.update, parent_map.itervalues())
2123
parent_ids.difference_update(revision_ids)
2124
parent_ids.discard(_mod_revision.NULL_REVISION)
2127
def _find_parent_keys_of_revisions(self, revision_keys):
2128
"""Similar to _find_parent_ids_of_revisions, but used with keys.
2130
:param revision_keys: An iterable of revision_keys.
2131
:return: The parents of all revision_keys that are not already in
2134
parent_map = self.revisions.get_parent_map(revision_keys)
2136
map(parent_keys.update, parent_map.itervalues())
2137
parent_keys.difference_update(revision_keys)
2138
parent_keys.discard(_mod_revision.NULL_REVISION)
2141
def fileids_altered_by_revision_ids(self, revision_ids, _inv_weave=None):
2142
"""Find the file ids and versions affected by revisions.
2144
:param revisions: an iterable containing revision ids.
2145
:param _inv_weave: The inventory weave from this repository or None.
2146
If None, the inventory weave will be opened automatically.
2147
:return: a dictionary mapping altered file-ids to an iterable of
2148
revision_ids. Each altered file-ids has the exact revision_ids that
2149
altered it listed explicitly.
2151
selected_keys = set((revid,) for revid in revision_ids)
2152
w = _inv_weave or self.inventories
2153
return self._find_file_ids_from_xml_inventory_lines(
2154
w.iter_lines_added_or_present_in_keys(
2155
selected_keys, pb=None),
2158
def iter_files_bytes(self, desired_files):
2159
"""Iterate through file versions.
2161
Files will not necessarily be returned in the order they occur in
2162
desired_files. No specific order is guaranteed.
2164
Yields pairs of identifier, bytes_iterator. identifier is an opaque
2165
value supplied by the caller as part of desired_files. It should
2166
uniquely identify the file version in the caller's context. (Examples:
2167
an index number or a TreeTransform trans_id.)
2169
bytes_iterator is an iterable of bytestrings for the file. The
2170
kind of iterable and length of the bytestrings are unspecified, but for
2171
this implementation, it is a list of bytes produced by
2172
VersionedFile.get_record_stream().
2174
:param desired_files: a list of (file_id, revision_id, identifier)
2178
for file_id, revision_id, callable_data in desired_files:
2179
text_keys[(file_id, revision_id)] = callable_data
2180
for record in self.texts.get_record_stream(text_keys, 'unordered', True):
2181
if record.storage_kind == 'absent':
2182
raise errors.RevisionNotPresent(record.key, self)
2183
yield text_keys[record.key], record.get_bytes_as('chunked')
2185
def _generate_text_key_index(self, text_key_references=None,
2187
"""Generate a new text key index for the repository.
2189
This is an expensive function that will take considerable time to run.
2191
:return: A dict mapping text keys ((file_id, revision_id) tuples) to a
2192
list of parents, also text keys. When a given key has no parents,
2193
the parents list will be [NULL_REVISION].
2195
# All revisions, to find inventory parents.
2196
if ancestors is None:
2197
graph = self.get_graph()
2198
ancestors = graph.get_parent_map(self.all_revision_ids())
2199
if text_key_references is None:
2200
text_key_references = self.find_text_key_references()
2201
pb = ui.ui_factory.nested_progress_bar()
2203
return self._do_generate_text_key_index(ancestors,
2204
text_key_references, pb)
2208
def _do_generate_text_key_index(self, ancestors, text_key_references, pb):
2209
"""Helper for _generate_text_key_index to avoid deep nesting."""
2210
revision_order = tsort.topo_sort(ancestors)
2211
invalid_keys = set()
2213
for revision_id in revision_order:
2214
revision_keys[revision_id] = set()
2215
text_count = len(text_key_references)
2216
# a cache of the text keys to allow reuse; costs a dict of all the
2217
# keys, but saves a 2-tuple for every child of a given key.
2219
for text_key, valid in text_key_references.iteritems():
2221
invalid_keys.add(text_key)
2223
revision_keys[text_key[1]].add(text_key)
2224
text_key_cache[text_key] = text_key
2225
del text_key_references
2227
text_graph = graph.Graph(graph.DictParentsProvider(text_index))
2228
NULL_REVISION = _mod_revision.NULL_REVISION
2229
# Set a cache with a size of 10 - this suffices for bzr.dev but may be
2230
# too small for large or very branchy trees. However, for 55K path
2231
# trees, it would be easy to use too much memory trivially. Ideally we
2232
# could gauge this by looking at available real memory etc, but this is
2233
# always a tricky proposition.
2234
inventory_cache = lru_cache.LRUCache(10)
2235
batch_size = 10 # should be ~150MB on a 55K path tree
2236
batch_count = len(revision_order) / batch_size + 1
2238
pb.update("Calculating text parents", processed_texts, text_count)
2239
for offset in xrange(batch_count):
2240
to_query = revision_order[offset * batch_size:(offset + 1) *
2244
for revision_id in to_query:
2245
parent_ids = ancestors[revision_id]
2246
for text_key in revision_keys[revision_id]:
2247
pb.update("Calculating text parents", processed_texts)
2248
processed_texts += 1
2249
candidate_parents = []
2250
for parent_id in parent_ids:
2251
parent_text_key = (text_key[0], parent_id)
2253
check_parent = parent_text_key not in \
2254
revision_keys[parent_id]
2256
# the parent parent_id is a ghost:
2257
check_parent = False
2258
# truncate the derived graph against this ghost.
2259
parent_text_key = None
2261
# look at the parent commit details inventories to
2262
# determine possible candidates in the per file graph.
2265
inv = inventory_cache[parent_id]
2267
inv = self.revision_tree(parent_id).inventory
2268
inventory_cache[parent_id] = inv
2270
parent_entry = inv[text_key[0]]
2271
except (KeyError, errors.NoSuchId):
2273
if parent_entry is not None:
2275
text_key[0], parent_entry.revision)
2277
parent_text_key = None
2278
if parent_text_key is not None:
2279
candidate_parents.append(
2280
text_key_cache[parent_text_key])
2281
parent_heads = text_graph.heads(candidate_parents)
2282
new_parents = list(parent_heads)
2283
new_parents.sort(key=lambda x:candidate_parents.index(x))
2284
if new_parents == []:
2285
new_parents = [NULL_REVISION]
2286
text_index[text_key] = new_parents
2288
for text_key in invalid_keys:
2289
text_index[text_key] = [NULL_REVISION]
2292
def item_keys_introduced_by(self, revision_ids, _files_pb=None):
2293
"""Get an iterable listing the keys of all the data introduced by a set
2296
The keys will be ordered so that the corresponding items can be safely
2297
fetched and inserted in that order.
2299
:returns: An iterable producing tuples of (knit-kind, file-id,
2300
versions). knit-kind is one of 'file', 'inventory', 'signatures',
2301
'revisions'. file-id is None unless knit-kind is 'file'.
2303
for result in self._find_file_keys_to_fetch(revision_ids, _files_pb):
2306
for result in self._find_non_file_keys_to_fetch(revision_ids):
2309
def _find_file_keys_to_fetch(self, revision_ids, pb):
2310
# XXX: it's a bit weird to control the inventory weave caching in this
2311
# generator. Ideally the caching would be done in fetch.py I think. Or
2312
# maybe this generator should explicitly have the contract that it
2313
# should not be iterated until the previously yielded item has been
2315
inv_w = self.inventories
2317
# file ids that changed
2318
file_ids = self.fileids_altered_by_revision_ids(revision_ids, inv_w)
2320
num_file_ids = len(file_ids)
2321
for file_id, altered_versions in file_ids.iteritems():
2323
pb.update("Fetch texts", count, num_file_ids)
2325
yield ("file", file_id, altered_versions)
2327
def _find_non_file_keys_to_fetch(self, revision_ids):
2329
yield ("inventory", None, revision_ids)
2332
# XXX: Note ATM no callers actually pay attention to this return
2333
# instead they just use the list of revision ids and ignore
2334
# missing sigs. Consider removing this work entirely
2335
revisions_with_signatures = set(self.signatures.get_parent_map(
2336
[(r,) for r in revision_ids]))
2337
revisions_with_signatures = set(
2338
[r for (r,) in revisions_with_signatures])
2339
revisions_with_signatures.intersection_update(revision_ids)
2340
yield ("signatures", None, revisions_with_signatures)
2343
yield ("revisions", None, revision_ids)
420
for line in w.iter_lines_added_or_present_in_versions(selected_revision_ids):
421
start = line.find('file_id="')+9
422
if start < 9: continue
423
end = line.find('"', start)
425
file_id = _unescape_xml(line[start:end])
427
start = line.find('revision="')+10
428
if start < 10: continue
429
end = line.find('"', start)
431
revision_id = _unescape_xml(line[start:end])
432
if revision_id in selected_revision_ids:
433
result.setdefault(file_id, set()).add(revision_id)
437
def get_inventory_weave(self):
438
return self.control_weaves.get_weave('inventory',
439
self.get_transaction())
2345
441
@needs_read_lock
2346
442
def get_inventory(self, revision_id):
2347
"""Get Inventory object by revision id."""
2348
return self.iter_inventories([revision_id]).next()
2350
def iter_inventories(self, revision_ids, ordering=None):
2351
"""Get many inventories by revision_ids.
2353
This will buffer some or all of the texts used in constructing the
2354
inventories in memory, but will only parse a single inventory at a
2357
:param revision_ids: The expected revision ids of the inventories.
2358
:param ordering: optional ordering, e.g. 'topological'. If not
2359
specified, the order of revision_ids will be preserved (by
2360
buffering if necessary).
2361
:return: An iterator of inventories.
2363
if ((None in revision_ids)
2364
or (_mod_revision.NULL_REVISION in revision_ids)):
2365
raise ValueError('cannot get null revision inventory')
2366
return self._iter_inventories(revision_ids, ordering)
2368
def _iter_inventories(self, revision_ids, ordering):
2369
"""single-document based inventory iteration."""
2370
inv_xmls = self._iter_inventory_xmls(revision_ids, ordering)
2371
for text, revision_id in inv_xmls:
2372
yield self._deserialise_inventory(revision_id, text)
2374
def _iter_inventory_xmls(self, revision_ids, ordering):
2375
if ordering is None:
2376
order_as_requested = True
2377
ordering = 'unordered'
2379
order_as_requested = False
2380
keys = [(revision_id,) for revision_id in revision_ids]
2383
if order_as_requested:
2384
key_iter = iter(keys)
2385
next_key = key_iter.next()
2386
stream = self.inventories.get_record_stream(keys, ordering, True)
2388
for record in stream:
2389
if record.storage_kind != 'absent':
2390
chunks = record.get_bytes_as('chunked')
2391
if order_as_requested:
2392
text_chunks[record.key] = chunks
2394
yield ''.join(chunks), record.key[-1]
2396
raise errors.NoSuchRevision(self, record.key)
2397
if order_as_requested:
2398
# Yield as many results as we can while preserving order.
2399
while next_key in text_chunks:
2400
chunks = text_chunks.pop(next_key)
2401
yield ''.join(chunks), next_key[-1]
2403
next_key = key_iter.next()
2404
except StopIteration:
2405
# We still want to fully consume the get_record_stream,
2406
# just in case it is not actually finished at this point
2410
def _deserialise_inventory(self, revision_id, xml):
2411
"""Transform the xml into an inventory object.
443
"""Get Inventory object by hash."""
444
return self.deserialise_inventory(
445
revision_id, self.get_inventory_xml(revision_id))
447
def deserialise_inventory(self, revision_id, xml):
448
"""Transform the xml into an inventory object.
2413
450
:param revision_id: The expected revision id of the inventory.
2414
451
:param xml: A serialised inventory.
2416
result = self._serializer.read_inventory_from_string(xml, revision_id,
2417
entry_cache=self._inventory_entry_cache,
2418
return_from_cache=self._safe_to_return_from_cache)
2419
if result.revision_id != revision_id:
2420
raise AssertionError('revision id mismatch %s != %s' % (
2421
result.revision_id, revision_id))
453
result = xml5.serializer_v5.read_inventory_from_string(xml)
454
result.root.revision = revision_id
2424
def get_serializer_format(self):
2425
return self._serializer.format_num
2427
457
@needs_read_lock
2428
def _get_inventory_xml(self, revision_id):
2429
"""Get serialized inventory as a string."""
2430
texts = self._iter_inventory_xmls([revision_id], 'unordered')
458
def get_inventory_xml(self, revision_id):
459
"""Get inventory XML as a file object."""
2432
text, revision_id = texts.next()
2433
except StopIteration:
461
assert isinstance(revision_id, basestring), type(revision_id)
462
iw = self.get_inventory_weave()
463
return iw.get_text(revision_id)
2434
465
raise errors.HistoryMissing(self, 'inventory', revision_id)
2437
def get_rev_id_for_revno(self, revno, known_pair):
2438
"""Return the revision id of a revno, given a later (revno, revid)
2439
pair in the same history.
2441
:return: if found (True, revid). If the available history ran out
2442
before reaching the revno, then this returns
2443
(False, (closest_revno, closest_revid)).
2445
known_revno, known_revid = known_pair
2446
partial_history = [known_revid]
2447
distance_from_known = known_revno - revno
2448
if distance_from_known < 0:
2450
'requested revno (%d) is later than given known revno (%d)'
2451
% (revno, known_revno))
2454
self, partial_history, stop_index=distance_from_known)
2455
except errors.RevisionNotPresent, err:
2456
if err.revision_id == known_revid:
2457
# The start revision (known_revid) wasn't found.
2459
# This is a stacked repository with no fallbacks, or a there's a
2460
# left-hand ghost. Either way, even though the revision named in
2461
# the error isn't in this repo, we know it's the next step in this
2462
# left-hand history.
2463
partial_history.append(err.revision_id)
2464
if len(partial_history) <= distance_from_known:
2465
# Didn't find enough history to get a revid for the revno.
2466
earliest_revno = known_revno - len(partial_history) + 1
2467
return (False, (earliest_revno, partial_history[-1]))
2468
if len(partial_history) - 1 > distance_from_known:
2469
raise AssertionError('_iter_for_revno returned too much history')
2470
return (True, partial_history[-1])
2472
def iter_reverse_revision_history(self, revision_id):
2473
"""Iterate backwards through revision ids in the lefthand history
2475
:param revision_id: The revision id to start with. All its lefthand
2476
ancestors will be traversed.
2478
graph = self.get_graph()
2479
next_id = revision_id
2481
if next_id in (None, _mod_revision.NULL_REVISION):
468
def get_inventory_sha1(self, revision_id):
469
"""Return the sha1 hash of the inventory entry
471
return self.get_revision(revision_id).inventory_sha1
474
def get_revision_graph(self, revision_id=None):
475
"""Return a dictionary containing the revision graph.
477
:param revision_id: The revision_id to get a graph from. If None, then
478
the entire revision graph is returned. This is a deprecated mode of
479
operation and will be removed in the future.
480
:return: a dictionary of revision_id->revision_parents_list.
482
# special case NULL_REVISION
483
if revision_id == NULL_REVISION:
485
weave = self.get_inventory_weave()
486
all_revisions = self._eliminate_revisions_not_present(weave.versions())
487
entire_graph = dict([(node, weave.get_parents(node)) for
488
node in all_revisions])
489
if revision_id is None:
491
elif revision_id not in entire_graph:
492
raise errors.NoSuchRevision(self, revision_id)
494
# add what can be reached from revision_id
496
pending = set([revision_id])
497
while len(pending) > 0:
499
result[node] = entire_graph[node]
500
for revision_id in result[node]:
501
if revision_id not in result:
502
pending.add(revision_id)
506
def get_revision_graph_with_ghosts(self, revision_ids=None):
507
"""Return a graph of the revisions with ghosts marked as applicable.
509
:param revision_ids: an iterable of revisions to graph or None for all.
510
:return: a Graph object with the graph reachable from revision_ids.
514
pending = set(self.all_revision_ids())
517
pending = set(revision_ids)
518
# special case NULL_REVISION
519
if NULL_REVISION in pending:
520
pending.remove(NULL_REVISION)
521
required = set(pending)
524
revision_id = pending.pop()
2484
parents = graph.get_parent_map([next_id])[next_id]
2486
raise errors.RevisionNotPresent(next_id, self)
2488
if len(parents) == 0:
2491
next_id = parents[0]
526
rev = self.get_revision(revision_id)
527
except errors.NoSuchRevision:
528
if revision_id in required:
531
result.add_ghost(revision_id)
533
for parent_id in rev.parent_ids:
534
# is this queued or done ?
535
if (parent_id not in pending and
536
parent_id not in done):
538
pending.add(parent_id)
539
result.add_node(revision_id, rev.parent_ids)
540
done.add(revision_id)
544
def get_revision_inventory(self, revision_id):
545
"""Return inventory of a past revision."""
546
# TODO: Unify this with get_inventory()
547
# bzr 0.0.6 and later imposes the constraint that the inventory_id
548
# must be the same as its revision, so this is trivial.
549
if revision_id is None:
550
# This does not make sense: if there is no revision,
551
# then it is the current tree inventory surely ?!
552
# and thus get_root_id() is something that looks at the last
553
# commit on the branch, and the get_root_id is an inventory check.
554
raise NotImplementedError
555
# return Inventory(self.get_root_id())
557
return self.get_inventory(revision_id)
2493
560
def is_shared(self):
2494
561
"""Return True if this repository is flagged as a shared repository."""
2495
562
raise NotImplementedError(self.is_shared)
2501
568
reconciler = RepoReconciler(self, thorough=thorough)
2502
569
reconciler.reconcile()
2503
570
return reconciler
2505
def _refresh_data(self):
2506
"""Helper called from lock_* to ensure coherency with disk.
2508
The default implementation does nothing; it is however possible
2509
for repositories to maintain loaded indices across multiple locks
2510
by checking inside their implementation of this method to see
2511
whether their indices are still valid. This depends of course on
2512
the disk format being validatable in this manner. This method is
2513
also called by the refresh_data() public interface to cause a refresh
2514
to occur while in a write lock so that data inserted by a smart server
2515
push operation is visible on the client's instance of the physical
2519
572
@needs_read_lock
2520
573
def revision_tree(self, revision_id):
2521
574
"""Return Tree for a revision on this branch.
2523
`revision_id` may be NULL_REVISION for the empty tree revision.
576
`revision_id` may be None for the empty tree revision.
2525
revision_id = _mod_revision.ensure_null(revision_id)
2526
578
# TODO: refactor this to use an existing revision object
2527
579
# so we don't need to read it in twice.
2528
if revision_id == _mod_revision.NULL_REVISION:
2529
return RevisionTree(self, Inventory(root_id=None),
2530
_mod_revision.NULL_REVISION)
580
if revision_id is None or revision_id == NULL_REVISION:
581
return RevisionTree(self, Inventory(), NULL_REVISION)
2532
inv = self.get_inventory(revision_id)
583
inv = self.get_revision_inventory(revision_id)
2533
584
return RevisionTree(self, inv, revision_id)
2535
587
def revision_trees(self, revision_ids):
2536
"""Return Trees for revisions in this repository.
2538
:param revision_ids: a sequence of revision-ids;
2539
a revision-id may not be None or 'null:'
2541
inventories = self.iter_inventories(revision_ids)
2542
for inv in inventories:
2543
yield RevisionTree(self, inv, inv.revision_id)
2545
def _filtered_revision_trees(self, revision_ids, file_ids):
2546
"""Return Tree for a revision on this branch with only some files.
2548
:param revision_ids: a sequence of revision-ids;
2549
a revision-id may not be None or 'null:'
2550
:param file_ids: if not None, the result is filtered
2551
so that only those file-ids, their parents and their
2552
children are included.
2554
inventories = self.iter_inventories(revision_ids)
2555
for inv in inventories:
2556
# Should we introduce a FilteredRevisionTree class rather
2557
# than pre-filter the inventory here?
2558
filtered_inv = inv.filter(file_ids)
2559
yield RevisionTree(self, filtered_inv, filtered_inv.revision_id)
588
"""Return Tree for a revision on this branch.
590
`revision_id` may not be None or 'null:'"""
591
assert None not in revision_ids
592
assert NULL_REVISION not in revision_ids
593
texts = self.get_inventory_weave().get_texts(revision_ids)
594
for text, revision_id in zip(texts, revision_ids):
595
inv = self.deserialise_inventory(revision_id, text)
596
yield RevisionTree(self, inv, revision_id)
2561
598
@needs_read_lock
2562
def get_ancestry(self, revision_id, topo_sorted=True):
599
def get_ancestry(self, revision_id):
2563
600
"""Return a list of revision-ids integrated by a revision.
2565
The first element of the list is always None, indicating the origin
2566
revision. This might change when we have history horizons, or
602
The first element of the list is always None, indicating the origin
603
revision. This might change when we have history horizons, or
2567
604
perhaps we should have a new API.
2569
606
This is topologically sorted.
2571
if _mod_revision.is_null(revision_id):
608
if revision_id is None:
2573
610
if not self.has_revision(revision_id):
2574
611
raise errors.NoSuchRevision(self, revision_id)
2575
graph = self.get_graph()
2577
search = graph._make_breadth_first_searcher([revision_id])
2580
found, ghosts = search.next_with_ghosts()
2581
except StopIteration:
2584
if _mod_revision.NULL_REVISION in keys:
2585
keys.remove(_mod_revision.NULL_REVISION)
2587
parent_map = graph.get_parent_map(keys)
2588
keys = tsort.topo_sort(parent_map)
2589
return [None] + list(keys)
2591
def pack(self, hint=None, clean_obsolete_packs=False):
2592
"""Compress the data within the repository.
2594
This operation only makes sense for some repository types. For other
2595
types it should be a no-op that just returns.
2597
This stub method does not require a lock, but subclasses should use
2598
@needs_write_lock as this is a long running call its reasonable to
2599
implicitly lock for the user.
2601
:param hint: If not supplied, the whole repository is packed.
2602
If supplied, the repository may use the hint parameter as a
2603
hint for the parts of the repository to pack. A hint can be
2604
obtained from the result of commit_write_group(). Out of
2605
date hints are simply ignored, because concurrent operations
2606
can obsolete them rapidly.
2608
:param clean_obsolete_packs: Clean obsolete packs immediately after
612
w = self.get_inventory_weave()
613
candidates = w.get_ancestry(revision_id)
614
return [None] + candidates # self._eliminate_revisions_not_present(candidates)
617
def print_file(self, file, revision_id):
618
"""Print `file` to stdout.
620
FIXME RBC 20060125 as John Meinel points out this is a bad api
621
- it writes to stdout, it assumes that that is valid etc. Fix
622
by creating a new more flexible convenience function.
624
tree = self.revision_tree(revision_id)
625
# use inventory as it was in that revision
626
file_id = tree.inventory.path2id(file)
628
# TODO: jam 20060427 Write a test for this code path
629
# it had a bug in it, and was raising the wrong
631
raise errors.BzrError("%r is not present in revision %s" % (file, revision_id))
632
tree.print_file(file_id)
2612
634
def get_transaction(self):
2613
635
return self.control_files.get_transaction()
2615
def get_parent_map(self, revision_ids):
2616
"""See graph.StackedParentsProvider.get_parent_map"""
2617
# revisions index works in keys; this just works in revisions
2618
# therefore wrap and unwrap
2621
for revision_id in revision_ids:
2622
if revision_id == _mod_revision.NULL_REVISION:
2623
result[revision_id] = ()
2624
elif revision_id is None:
2625
raise ValueError('get_parent_map(None) is not valid')
2627
query_keys.append((revision_id ,))
2628
for ((revision_id,), parent_keys) in \
2629
self.revisions.get_parent_map(query_keys).iteritems():
2631
result[revision_id] = tuple([parent_revid
2632
for (parent_revid,) in parent_keys])
2634
result[revision_id] = (_mod_revision.NULL_REVISION,)
2637
def _make_parents_provider(self):
2641
def get_known_graph_ancestry(self, revision_ids):
2642
"""Return the known graph for a set of revision ids and their ancestors.
2644
st = static_tuple.StaticTuple
2645
revision_keys = [st(r_id).intern() for r_id in revision_ids]
2646
known_graph = self.revisions.get_known_graph_ancestry(revision_keys)
2647
return graph.GraphThunkIdsToKeys(known_graph)
2649
def get_graph(self, other_repository=None):
2650
"""Return the graph walker for this repository format"""
2651
parents_provider = self._make_parents_provider()
2652
if (other_repository is not None and
2653
not self.has_same_location(other_repository)):
2654
parents_provider = graph.StackedParentsProvider(
2655
[parents_provider, other_repository._make_parents_provider()])
2656
return graph.Graph(parents_provider)
2658
def _get_versioned_file_checker(self, text_key_references=None,
2660
"""Return an object suitable for checking versioned files.
2662
:param text_key_references: if non-None, an already built
2663
dictionary mapping text keys ((fileid, revision_id) tuples)
2664
to whether they were referred to by the inventory of the
2665
revision_id that they contain. If None, this will be
2667
:param ancestors: Optional result from
2668
self.get_graph().get_parent_map(self.all_revision_ids()) if already
2671
return _VersionedFileChecker(self,
2672
text_key_references=text_key_references, ancestors=ancestors)
2674
def revision_ids_to_search_result(self, result_set):
2675
"""Convert a set of revision ids to a graph SearchResult."""
2676
result_parents = set()
2677
for parents in self.get_graph().get_parent_map(
2678
result_set).itervalues():
2679
result_parents.update(parents)
2680
included_keys = result_set.intersection(result_parents)
2681
start_keys = result_set.difference(included_keys)
2682
exclude_keys = result_parents.difference(result_set)
2683
result = graph.SearchResult(start_keys, exclude_keys,
2684
len(result_set), result_set)
637
def revision_parents(self, revid):
638
return self.get_inventory_weave().parent_names(revid)
2687
640
@needs_write_lock
2688
641
def set_make_working_trees(self, new_value):
2948
self._transport.delete('no-working-trees')
832
self.control_files._transport.delete('no-working-trees')
2949
833
except errors.NoSuchFile:
2952
self._transport.put_bytes('no-working-trees', '',
2953
mode=self.bzrdir._get_file_mode())
836
self.control_files.put_utf8('no-working-trees', '')
2955
838
def make_working_trees(self):
2956
839
"""Returns the policy for making working trees on new branches."""
2957
return not self._transport.has('no-working-trees')
2960
class MetaDirVersionedFileRepository(MetaDirRepository):
2961
"""Repositories in a meta-dir, that work via versioned file objects."""
2963
def __init__(self, _format, a_bzrdir, control_files):
2964
super(MetaDirVersionedFileRepository, self).__init__(_format, a_bzrdir,
2968
network_format_registry = registry.FormatRegistry()
2969
"""Registry of formats indexed by their network name.
2971
The network name for a repository format is an identifier that can be used when
2972
referring to formats with smart server operations. See
2973
RepositoryFormat.network_name() for more detail.
2977
format_registry = registry.FormatRegistry(network_format_registry)
2978
"""Registry of formats, indexed by their BzrDirMetaFormat format string.
2980
This can contain either format instances themselves, or classes/factories that
2981
can be called to obtain one.
2985
#####################################################################
2986
# Repository Formats
840
return not self.control_files._transport.has('no-working-trees')
843
class KnitRepository(MetaDirRepository):
844
"""Knit format repository."""
846
def _warn_if_deprecated(self):
847
# This class isn't deprecated
850
def _inventory_add_lines(self, inv_vf, revid, parents, lines):
851
inv_vf.add_lines_with_ghosts(revid, parents, lines)
854
def _all_revision_ids(self):
855
"""See Repository.all_revision_ids()."""
856
# Knits get the revision graph from the index of the revision knit, so
857
# it's always possible even if they're on an unlistable transport.
858
return self._revision_store.all_revision_ids(self.get_transaction())
860
def fileid_involved_between_revs(self, from_revid, to_revid):
861
"""Find file_id(s) which are involved in the changes between revisions.
863
This determines the set of revisions which are involved, and then
864
finds all file ids affected by those revisions.
866
vf = self._get_revision_vf()
867
from_set = set(vf.get_ancestry(from_revid))
868
to_set = set(vf.get_ancestry(to_revid))
869
changed = to_set.difference(from_set)
870
return self._fileid_involved_by_set(changed)
872
def fileid_involved(self, last_revid=None):
873
"""Find all file_ids modified in the ancestry of last_revid.
875
:param last_revid: If None, last_revision() will be used.
878
changed = set(self.all_revision_ids())
880
changed = set(self.get_ancestry(last_revid))
883
return self._fileid_involved_by_set(changed)
886
def get_ancestry(self, revision_id):
887
"""Return a list of revision-ids integrated by a revision.
889
This is topologically sorted.
891
if revision_id is None:
893
vf = self._get_revision_vf()
895
return [None] + vf.get_ancestry(revision_id)
896
except errors.RevisionNotPresent:
897
raise errors.NoSuchRevision(self, revision_id)
900
def get_revision(self, revision_id):
901
"""Return the Revision object for a named revision"""
902
return self.get_revision_reconcile(revision_id)
905
def get_revision_graph(self, revision_id=None):
906
"""Return a dictionary containing the revision graph.
908
:param revision_id: The revision_id to get a graph from. If None, then
909
the entire revision graph is returned. This is a deprecated mode of
910
operation and will be removed in the future.
911
:return: a dictionary of revision_id->revision_parents_list.
913
# special case NULL_REVISION
914
if revision_id == NULL_REVISION:
916
weave = self._get_revision_vf()
917
entire_graph = weave.get_graph()
918
if revision_id is None:
919
return weave.get_graph()
920
elif revision_id not in weave:
921
raise errors.NoSuchRevision(self, revision_id)
923
# add what can be reached from revision_id
925
pending = set([revision_id])
926
while len(pending) > 0:
928
result[node] = weave.get_parents(node)
929
for revision_id in result[node]:
930
if revision_id not in result:
931
pending.add(revision_id)
935
def get_revision_graph_with_ghosts(self, revision_ids=None):
936
"""Return a graph of the revisions with ghosts marked as applicable.
938
:param revision_ids: an iterable of revisions to graph or None for all.
939
:return: a Graph object with the graph reachable from revision_ids.
942
vf = self._get_revision_vf()
943
versions = set(vf.versions())
945
pending = set(self.all_revision_ids())
948
pending = set(revision_ids)
949
# special case NULL_REVISION
950
if NULL_REVISION in pending:
951
pending.remove(NULL_REVISION)
952
required = set(pending)
955
revision_id = pending.pop()
956
if not revision_id in versions:
957
if revision_id in required:
958
raise errors.NoSuchRevision(self, revision_id)
960
result.add_ghost(revision_id)
961
# mark it as done so we don't try for it again.
962
done.add(revision_id)
964
parent_ids = vf.get_parents_with_ghosts(revision_id)
965
for parent_id in parent_ids:
966
# is this queued or done ?
967
if (parent_id not in pending and
968
parent_id not in done):
970
pending.add(parent_id)
971
result.add_node(revision_id, parent_ids)
972
done.add(revision_id)
975
def _get_revision_vf(self):
976
""":return: a versioned file containing the revisions."""
977
vf = self._revision_store.get_revision_file(self.get_transaction())
981
def reconcile(self, other=None, thorough=False):
982
"""Reconcile this repository."""
983
from bzrlib.reconcile import KnitReconciler
984
reconciler = KnitReconciler(self, thorough=thorough)
985
reconciler.reconcile()
988
def revision_parents(self, revision_id):
989
return self._get_revision_vf().get_parents(revision_id)
2988
992
class RepositoryFormat(object):
2989
993
"""A repository format.
2991
Formats provide four things:
995
Formats provide three things:
2992
996
* An initialization routine to construct repository data on disk.
2993
* a optional format string which is used when the BzrDir supports
997
* a format string which is used when the BzrDir supports versioned
2995
999
* an open routine which returns a Repository instance.
2996
* A network name for referring to the format in smart server RPC
2999
There is one and only one Format subclass for each on-disk format. But
3000
there can be one Repository subclass that is used for several different
3001
formats. The _format attribute on a Repository instance can be used to
3002
determine the disk format.
3004
Formats are placed in a registry by their format string for reference
3005
during opening. These should be subclasses of RepositoryFormat for
1001
Formats are placed in an dict by their format string for reference
1002
during opening. These should be subclasses of RepositoryFormat
3008
1005
Once a format is deprecated, just deprecate the initialize and open
3009
methods on the format class. Do not deprecate the object, as the
3010
object may be created even when a repository instance hasn't been
1006
methods on the format class. Do not deprecate the object, as the
1007
object will be created every system load.
3013
1009
Common instance attributes:
3014
1010
_matchingbzrdir - the bzrdir format that the repository format was
3015
1011
originally written to work with. This can be used if manually
3016
1012
constructing a bzrdir and repository, or more commonly for test suite
3020
# Set to True or False in derived classes. True indicates that the format
3021
# supports ghosts gracefully.
3022
supports_ghosts = None
3023
# Can this repository be given external locations to lookup additional
3024
# data. Set to True or False in derived classes.
3025
supports_external_lookups = None
3026
# Does this format support CHK bytestring lookups. Set to True or False in
3028
supports_chks = None
3029
# Should commit add an inventory, or an inventory delta to the repository.
3030
_commit_inv_deltas = True
3031
# What order should fetch operations request streams in?
3032
# The default is unordered as that is the cheapest for an origin to
3034
_fetch_order = 'unordered'
3035
# Does this repository format use deltas that can be fetched as-deltas ?
3036
# (E.g. knits, where the knit deltas can be transplanted intact.
3037
# We default to False, which will ensure that enough data to get
3038
# a full text out of any fetch stream will be grabbed.
3039
_fetch_uses_deltas = False
3040
# Should fetch trigger a reconcile after the fetch? Only needed for
3041
# some repository formats that can suffer internal inconsistencies.
3042
_fetch_reconcile = False
3043
# Does this format have < O(tree_size) delta generation. Used to hint what
3044
# code path for commit, amongst other things.
3046
# Does doing a pack operation compress data? Useful for the pack UI command
3047
# (so if there is one pack, the operation can still proceed because it may
3048
# help), and for fetching when data won't have come from the same
3050
pack_compresses = False
3051
# Does the repository inventory storage understand references to trees?
3052
supports_tree_reference = None
3053
# Is the format experimental ?
3054
experimental = False
3057
return "%s()" % self.__class__.__name__
3059
def __eq__(self, other):
3060
# format objects are generally stateless
3061
return isinstance(other, self.__class__)
3063
def __ne__(self, other):
3064
return not self == other
1016
_default_format = None
1017
"""The default format used for new repositories."""
1020
"""The known formats."""
1023
return "<%s>" % self.__class__.__name__
3067
1026
def find_format(klass, a_bzrdir):
3068
"""Return the format for the repository object in a_bzrdir.
3070
This is used by bzr native formats that have a "format" file in
3071
the repository. Other methods may be used by different types of
1027
"""Return the format for the repository object in a_bzrdir."""
3075
1029
transport = a_bzrdir.get_repository_transport(None)
3076
format_string = transport.get_bytes("format")
3077
return format_registry.get(format_string)
1030
format_string = transport.get("format").read()
1031
return klass._formats[format_string]
3078
1032
except errors.NoSuchFile:
3079
1033
raise errors.NoRepositoryPresent(a_bzrdir)
3080
1034
except KeyError:
3081
raise errors.UnknownFormatError(format=format_string,
3085
def register_format(klass, format):
3086
format_registry.register(format.get_format_string(), format)
3089
def unregister_format(klass, format):
3090
format_registry.remove(format.get_format_string())
1035
raise errors.UnknownFormatError(format=format_string)
1037
def _get_control_store(self, repo_transport, control_files):
1038
"""Return the control store for this repository."""
1039
raise NotImplementedError(self._get_control_store)
3093
1042
def get_default_format(klass):
3094
1043
"""Return the current default format."""
3095
from bzrlib import bzrdir
3096
return bzrdir.format_registry.make_bzrdir('default').repository_format
1044
return klass._default_format
3098
1046
def get_format_string(self):
3099
1047
"""Return the ASCII format string that identifies this format.
3101
Note that in pre format ?? repositories the format string is
1049
Note that in pre format ?? repositories the format string is
3102
1050
not permitted nor written to disk.
3104
1052
raise NotImplementedError(self.get_format_string)
3135
1104
:param a_bzrdir: The bzrdir to put the new repository in it.
3136
1105
:param shared: The repository should be initialized as a sharable one.
3137
:returns: The new repository object.
3139
1107
This may raise UninitializableFormat if shared repository are not
3140
1108
compatible the a_bzrdir.
3142
raise NotImplementedError(self.initialize)
3144
1111
def is_supported(self):
3145
1112
"""Is this format supported?
3147
1114
Supported formats must be initializable and openable.
3148
Unsupported formats may not support initialization or committing or
1115
Unsupported formats may not support initialization or committing or
3149
1116
some other features depending on the reason for not being supported.
3153
def network_name(self):
3154
"""A simple byte string uniquely identifying this format for RPC calls.
3156
MetaDir repository formats use their disk format string to identify the
3157
repository over the wire. All in one formats such as bzr < 0.8, and
3158
foreign formats like svn/git and hg should use some marker which is
3159
unique and immutable.
3161
raise NotImplementedError(self.network_name)
3163
def check_conversion_target(self, target_format):
3164
if self.rich_root_data and not target_format.rich_root_data:
3165
raise errors.BadConversionTarget(
3166
'Does not support rich root data.', target_format,
3168
if (self.supports_tree_reference and
3169
not getattr(target_format, 'supports_tree_reference', False)):
3170
raise errors.BadConversionTarget(
3171
'Does not support nested trees', target_format,
3174
1120
def open(self, a_bzrdir, _found=False):
3175
1121
"""Return an instance of this format for the bzrdir a_bzrdir.
3177
1123
_found is a private parameter, do not use it.
3179
1125
raise NotImplementedError(self.open)
3181
def _run_post_repo_init_hooks(self, repository, a_bzrdir, shared):
3182
from bzrlib.bzrdir import BzrDir, RepoInitHookParams
3183
hooks = BzrDir.hooks['post_repo_init']
3186
params = RepoInitHookParams(repository, self, a_bzrdir, shared)
1128
def register_format(klass, format):
1129
klass._formats[format.get_format_string()] = format
1132
def set_default_format(klass, format):
1133
klass._default_format = format
1136
def unregister_format(klass, format):
1137
assert klass._formats[format.get_format_string()] is format
1138
del klass._formats[format.get_format_string()]
1141
class PreSplitOutRepositoryFormat(RepositoryFormat):
1142
"""Base class for the pre split out repository formats."""
1144
def initialize(self, a_bzrdir, shared=False, _internal=False):
1145
"""Create a weave repository.
1147
TODO: when creating split out bzr branch formats, move this to a common
1148
base for Format5, Format6. or something like that.
1150
from bzrlib.weavefile import write_weave_v5
1151
from bzrlib.weave import Weave
1154
raise errors.IncompatibleFormat(self, a_bzrdir._format)
1157
# always initialized when the bzrdir is.
1158
return self.open(a_bzrdir, _found=True)
1160
# Create an empty weave
1162
write_weave_v5(Weave(), sio)
1163
empty_weave = sio.getvalue()
1165
mutter('creating repository in %s.', a_bzrdir.transport.base)
1166
dirs = ['revision-store', 'weaves']
1167
files = [('inventory.weave', StringIO(empty_weave)),
1170
# FIXME: RBC 20060125 don't peek under the covers
1171
# NB: no need to escape relative paths that are url safe.
1172
control_files = LockableFiles(a_bzrdir.transport, 'branch-lock',
1174
control_files.create_lock()
1175
control_files.lock_write()
1176
control_files._transport.mkdir_multi(dirs,
1177
mode=control_files._dir_mode)
1179
for file, content in files:
1180
control_files.put(file, content)
1182
control_files.unlock()
1183
return self.open(a_bzrdir, _found=True)
1185
def _get_control_store(self, repo_transport, control_files):
1186
"""Return the control store for this repository."""
1187
return self._get_versioned_file_store('',
1192
def _get_text_store(self, transport, control_files):
1193
"""Get a store for file texts for this format."""
1194
raise NotImplementedError(self._get_text_store)
1196
def open(self, a_bzrdir, _found=False):
1197
"""See RepositoryFormat.open()."""
1199
# we are being called directly and must probe.
1200
raise NotImplementedError
1202
repo_transport = a_bzrdir.get_repository_transport(None)
1203
control_files = a_bzrdir._control_files
1204
text_store = self._get_text_store(repo_transport, control_files)
1205
control_store = self._get_control_store(repo_transport, control_files)
1206
_revision_store = self._get_revision_store(repo_transport, control_files)
1207
return AllInOneRepository(_format=self,
1209
_revision_store=_revision_store,
1210
control_store=control_store,
1211
text_store=text_store)
1214
class RepositoryFormat4(PreSplitOutRepositoryFormat):
1215
"""Bzr repository format 4.
1217
This repository format has:
1219
- TextStores for texts, inventories,revisions.
1221
This format is deprecated: it indexes texts using a text id which is
1222
removed in format 5; initialization and write support for this format
1227
super(RepositoryFormat4, self).__init__()
1228
self._matchingbzrdir = bzrdir.BzrDirFormat4()
1230
def get_format_description(self):
1231
"""See RepositoryFormat.get_format_description()."""
1232
return "Repository format 4"
1234
def initialize(self, url, shared=False, _internal=False):
1235
"""Format 4 branches cannot be created."""
1236
raise errors.UninitializableFormat(self)
1238
def is_supported(self):
1239
"""Format 4 is not supported.
1241
It is not supported because the model changed from 4 to 5 and the
1242
conversion logic is expensive - so doing it on the fly was not
1247
def _get_control_store(self, repo_transport, control_files):
1248
"""Format 4 repositories have no formal control store at this point.
1250
This will cause any control-file-needing apis to fail - this is desired.
1254
def _get_revision_store(self, repo_transport, control_files):
1255
"""See RepositoryFormat._get_revision_store()."""
1256
from bzrlib.xml4 import serializer_v4
1257
return self._get_text_rev_store(repo_transport,
1260
serializer=serializer_v4)
1262
def _get_text_store(self, transport, control_files):
1263
"""See RepositoryFormat._get_text_store()."""
1266
class RepositoryFormat5(PreSplitOutRepositoryFormat):
1267
"""Bzr control format 5.
1269
This repository format has:
1270
- weaves for file texts and inventory
1272
- TextStores for revisions and signatures.
1276
super(RepositoryFormat5, self).__init__()
1277
self._matchingbzrdir = bzrdir.BzrDirFormat5()
1279
def get_format_description(self):
1280
"""See RepositoryFormat.get_format_description()."""
1281
return "Weave repository format 5"
1283
def _get_revision_store(self, repo_transport, control_files):
1284
"""See RepositoryFormat._get_revision_store()."""
1285
"""Return the revision store object for this a_bzrdir."""
1286
return self._get_text_rev_store(repo_transport,
1291
def _get_text_store(self, transport, control_files):
1292
"""See RepositoryFormat._get_text_store()."""
1293
return self._get_versioned_file_store('weaves', transport, control_files, prefixed=False)
1296
class RepositoryFormat6(PreSplitOutRepositoryFormat):
1297
"""Bzr control format 6.
1299
This repository format has:
1300
- weaves for file texts and inventory
1301
- hash subdirectory based stores.
1302
- TextStores for revisions and signatures.
1306
super(RepositoryFormat6, self).__init__()
1307
self._matchingbzrdir = bzrdir.BzrDirFormat6()
1309
def get_format_description(self):
1310
"""See RepositoryFormat.get_format_description()."""
1311
return "Weave repository format 6"
1313
def _get_revision_store(self, repo_transport, control_files):
1314
"""See RepositoryFormat._get_revision_store()."""
1315
return self._get_text_rev_store(repo_transport,
1321
def _get_text_store(self, transport, control_files):
1322
"""See RepositoryFormat._get_text_store()."""
1323
return self._get_versioned_file_store('weaves', transport, control_files)
3191
1326
class MetaDirRepositoryFormat(RepositoryFormat):
3192
1327
"""Common base class for the new repositories using the metadir layout."""
3194
rich_root_data = False
3195
supports_tree_reference = False
3196
supports_external_lookups = False
3199
def _matchingbzrdir(self):
3200
matching = bzrdir.BzrDirMetaFormat1()
3201
matching.repository_format = self
3204
1329
def __init__(self):
3205
1330
super(MetaDirRepositoryFormat, self).__init__()
1331
self._matchingbzrdir = bzrdir.BzrDirMetaFormat1()
3207
1333
def _create_control_files(self, a_bzrdir):
3208
1334
"""Create the required files and the initial control_files object."""
3209
1335
# FIXME: RBC 20060125 don't peek under the covers
3210
1336
# NB: no need to escape relative paths that are url safe.
3211
1337
repository_transport = a_bzrdir.get_repository_transport(self)
3212
control_files = lockable_files.LockableFiles(repository_transport,
3213
'lock', lockdir.LockDir)
1338
control_files = LockableFiles(repository_transport, 'lock', LockDir)
3214
1339
control_files.create_lock()
3215
1340
return control_files
3218
1343
"""Upload the initial blank content."""
3219
1344
control_files = self._create_control_files(a_bzrdir)
3220
1345
control_files.lock_write()
3221
transport = control_files._transport
3223
utf8_files += [('shared-storage', '')]
3225
transport.mkdir_multi(dirs, mode=a_bzrdir._get_dir_mode())
3226
for (filename, content_stream) in files:
3227
transport.put_file(filename, content_stream,
3228
mode=a_bzrdir._get_file_mode())
3229
for (filename, content_bytes) in utf8_files:
3230
transport.put_bytes_non_atomic(filename, content_bytes,
3231
mode=a_bzrdir._get_file_mode())
1347
control_files._transport.mkdir_multi(dirs,
1348
mode=control_files._dir_mode)
1349
for file, content in files:
1350
control_files.put(file, content)
1351
for file, content in utf8_files:
1352
control_files.put_utf8(file, content)
1354
control_files.put_utf8('shared-storage', '')
3233
1356
control_files.unlock()
3235
def network_name(self):
3236
"""Metadir formats have matching disk and network format strings."""
3237
return self.get_format_string()
3240
# Pre-0.8 formats that don't have a disk format string (because they are
3241
# versioned by the matching control directory). We use the control directories
3242
# disk format string as a key for the network_name because they meet the
3243
# constraints (simple string, unique, immutable).
3244
network_format_registry.register_lazy(
3245
"Bazaar-NG branch, format 5\n",
3246
'bzrlib.repofmt.weaverepo',
3247
'RepositoryFormat5',
3249
network_format_registry.register_lazy(
3250
"Bazaar-NG branch, format 6\n",
3251
'bzrlib.repofmt.weaverepo',
3252
'RepositoryFormat6',
3255
# formats which have no format string are not discoverable or independently
3256
# creatable on disk, so are not registered in format_registry. They're
3257
# all in bzrlib.repofmt.weaverepo now. When an instance of one of these is
3258
# needed, it's constructed directly by the BzrDir. Non-native formats where
3259
# the repository is not separately opened are similar.
3261
format_registry.register_lazy(
3262
'Bazaar-NG Repository format 7',
3263
'bzrlib.repofmt.weaverepo',
3267
format_registry.register_lazy(
3268
'Bazaar-NG Knit Repository Format 1',
3269
'bzrlib.repofmt.knitrepo',
3270
'RepositoryFormatKnit1',
3273
format_registry.register_lazy(
3274
'Bazaar Knit Repository Format 3 (bzr 0.15)\n',
3275
'bzrlib.repofmt.knitrepo',
3276
'RepositoryFormatKnit3',
3279
format_registry.register_lazy(
3280
'Bazaar Knit Repository Format 4 (bzr 1.0)\n',
3281
'bzrlib.repofmt.knitrepo',
3282
'RepositoryFormatKnit4',
3285
# Pack-based formats. There is one format for pre-subtrees, and one for
3286
# post-subtrees to allow ease of testing.
3287
# NOTE: These are experimental in 0.92. Stable in 1.0 and above
3288
format_registry.register_lazy(
3289
'Bazaar pack repository format 1 (needs bzr 0.92)\n',
3290
'bzrlib.repofmt.pack_repo',
3291
'RepositoryFormatKnitPack1',
3293
format_registry.register_lazy(
3294
'Bazaar pack repository format 1 with subtree support (needs bzr 0.92)\n',
3295
'bzrlib.repofmt.pack_repo',
3296
'RepositoryFormatKnitPack3',
3298
format_registry.register_lazy(
3299
'Bazaar pack repository format 1 with rich root (needs bzr 1.0)\n',
3300
'bzrlib.repofmt.pack_repo',
3301
'RepositoryFormatKnitPack4',
3303
format_registry.register_lazy(
3304
'Bazaar RepositoryFormatKnitPack5 (bzr 1.6)\n',
3305
'bzrlib.repofmt.pack_repo',
3306
'RepositoryFormatKnitPack5',
3308
format_registry.register_lazy(
3309
'Bazaar RepositoryFormatKnitPack5RichRoot (bzr 1.6.1)\n',
3310
'bzrlib.repofmt.pack_repo',
3311
'RepositoryFormatKnitPack5RichRoot',
3313
format_registry.register_lazy(
3314
'Bazaar RepositoryFormatKnitPack5RichRoot (bzr 1.6)\n',
3315
'bzrlib.repofmt.pack_repo',
3316
'RepositoryFormatKnitPack5RichRootBroken',
3318
format_registry.register_lazy(
3319
'Bazaar RepositoryFormatKnitPack6 (bzr 1.9)\n',
3320
'bzrlib.repofmt.pack_repo',
3321
'RepositoryFormatKnitPack6',
3323
format_registry.register_lazy(
3324
'Bazaar RepositoryFormatKnitPack6RichRoot (bzr 1.9)\n',
3325
'bzrlib.repofmt.pack_repo',
3326
'RepositoryFormatKnitPack6RichRoot',
3329
# Development formats.
3330
# Obsolete but kept pending a CHK based subtree format.
3331
format_registry.register_lazy(
3332
("Bazaar development format 2 with subtree support "
3333
"(needs bzr.dev from before 1.8)\n"),
3334
'bzrlib.repofmt.pack_repo',
3335
'RepositoryFormatPackDevelopment2Subtree',
3338
# 1.14->1.16 go below here
3339
format_registry.register_lazy(
3340
'Bazaar development format - group compression and chk inventory'
3341
' (needs bzr.dev from 1.14)\n',
3342
'bzrlib.repofmt.groupcompress_repo',
3343
'RepositoryFormatCHK1',
3346
format_registry.register_lazy(
3347
'Bazaar development format - chk repository with bencode revision '
3348
'serialization (needs bzr.dev from 1.16)\n',
3349
'bzrlib.repofmt.groupcompress_repo',
3350
'RepositoryFormatCHK2',
3352
format_registry.register_lazy(
3353
'Bazaar repository format 2a (needs bzr 1.16 or later)\n',
3354
'bzrlib.repofmt.groupcompress_repo',
3355
'RepositoryFormat2a',
1359
class RepositoryFormat7(MetaDirRepositoryFormat):
1360
"""Bzr repository 7.
1362
This repository format has:
1363
- weaves for file texts and inventory
1364
- hash subdirectory based stores.
1365
- TextStores for revisions and signatures.
1366
- a format marker of its own
1367
- an optional 'shared-storage' flag
1368
- an optional 'no-working-trees' flag
1371
def _get_control_store(self, repo_transport, control_files):
1372
"""Return the control store for this repository."""
1373
return self._get_versioned_file_store('',
1378
def get_format_string(self):
1379
"""See RepositoryFormat.get_format_string()."""
1380
return "Bazaar-NG Repository format 7"
1382
def get_format_description(self):
1383
"""See RepositoryFormat.get_format_description()."""
1384
return "Weave repository format 7"
1386
def _get_revision_store(self, repo_transport, control_files):
1387
"""See RepositoryFormat._get_revision_store()."""
1388
return self._get_text_rev_store(repo_transport,
1395
def _get_text_store(self, transport, control_files):
1396
"""See RepositoryFormat._get_text_store()."""
1397
return self._get_versioned_file_store('weaves',
1401
def initialize(self, a_bzrdir, shared=False):
1402
"""Create a weave repository.
1404
:param shared: If true the repository will be initialized as a shared
1407
from bzrlib.weavefile import write_weave_v5
1408
from bzrlib.weave import Weave
1410
# Create an empty weave
1412
write_weave_v5(Weave(), sio)
1413
empty_weave = sio.getvalue()
1415
mutter('creating repository in %s.', a_bzrdir.transport.base)
1416
dirs = ['revision-store', 'weaves']
1417
files = [('inventory.weave', StringIO(empty_weave)),
1419
utf8_files = [('format', self.get_format_string())]
1421
self._upload_blank_content(a_bzrdir, dirs, files, utf8_files, shared)
1422
return self.open(a_bzrdir=a_bzrdir, _found=True)
1424
def open(self, a_bzrdir, _found=False, _override_transport=None):
1425
"""See RepositoryFormat.open().
1427
:param _override_transport: INTERNAL USE ONLY. Allows opening the
1428
repository at a slightly different url
1429
than normal. I.e. during 'upgrade'.
1432
format = RepositoryFormat.find_format(a_bzrdir)
1433
assert format.__class__ == self.__class__
1434
if _override_transport is not None:
1435
repo_transport = _override_transport
1437
repo_transport = a_bzrdir.get_repository_transport(None)
1438
control_files = LockableFiles(repo_transport, 'lock', LockDir)
1439
text_store = self._get_text_store(repo_transport, control_files)
1440
control_store = self._get_control_store(repo_transport, control_files)
1441
_revision_store = self._get_revision_store(repo_transport, control_files)
1442
return MetaDirRepository(_format=self,
1444
control_files=control_files,
1445
_revision_store=_revision_store,
1446
control_store=control_store,
1447
text_store=text_store)
1450
class RepositoryFormatKnit1(MetaDirRepositoryFormat):
1451
"""Bzr repository knit format 1.
1453
This repository format has:
1454
- knits for file texts and inventory
1455
- hash subdirectory based stores.
1456
- knits for revisions and signatures
1457
- TextStores for revisions and signatures.
1458
- a format marker of its own
1459
- an optional 'shared-storage' flag
1460
- an optional 'no-working-trees' flag
1463
This format was introduced in bzr 0.8.
1466
def _get_control_store(self, repo_transport, control_files):
1467
"""Return the control store for this repository."""
1468
return VersionedFileStore(
1471
file_mode=control_files._file_mode,
1472
versionedfile_class=KnitVersionedFile,
1473
versionedfile_kwargs={'factory':KnitPlainFactory()},
1476
def get_format_string(self):
1477
"""See RepositoryFormat.get_format_string()."""
1478
return "Bazaar-NG Knit Repository Format 1"
1480
def get_format_description(self):
1481
"""See RepositoryFormat.get_format_description()."""
1482
return "Knit repository format 1"
1484
def _get_revision_store(self, repo_transport, control_files):
1485
"""See RepositoryFormat._get_revision_store()."""
1486
from bzrlib.store.revision.knit import KnitRevisionStore
1487
versioned_file_store = VersionedFileStore(
1489
file_mode=control_files._file_mode,
1492
versionedfile_class=KnitVersionedFile,
1493
versionedfile_kwargs={'delta':False, 'factory':KnitPlainFactory()},
1496
return KnitRevisionStore(versioned_file_store)
1498
def _get_text_store(self, transport, control_files):
1499
"""See RepositoryFormat._get_text_store()."""
1500
return self._get_versioned_file_store('knits',
1503
versionedfile_class=KnitVersionedFile,
1506
def initialize(self, a_bzrdir, shared=False):
1507
"""Create a knit format 1 repository.
1509
:param a_bzrdir: bzrdir to contain the new repository; must already
1511
:param shared: If true the repository will be initialized as a shared
1514
mutter('creating repository in %s.', a_bzrdir.transport.base)
1515
dirs = ['revision-store', 'knits']
1517
utf8_files = [('format', self.get_format_string())]
1519
self._upload_blank_content(a_bzrdir, dirs, files, utf8_files, shared)
1520
repo_transport = a_bzrdir.get_repository_transport(None)
1521
control_files = LockableFiles(repo_transport, 'lock', LockDir)
1522
control_store = self._get_control_store(repo_transport, control_files)
1523
transaction = transactions.WriteTransaction()
1524
# trigger a write of the inventory store.
1525
control_store.get_weave_or_empty('inventory', transaction)
1526
_revision_store = self._get_revision_store(repo_transport, control_files)
1527
_revision_store.has_revision_id('A', transaction)
1528
_revision_store.get_signature_file(transaction)
1529
return self.open(a_bzrdir=a_bzrdir, _found=True)
1531
def open(self, a_bzrdir, _found=False, _override_transport=None):
1532
"""See RepositoryFormat.open().
1534
:param _override_transport: INTERNAL USE ONLY. Allows opening the
1535
repository at a slightly different url
1536
than normal. I.e. during 'upgrade'.
1539
format = RepositoryFormat.find_format(a_bzrdir)
1540
assert format.__class__ == self.__class__
1541
if _override_transport is not None:
1542
repo_transport = _override_transport
1544
repo_transport = a_bzrdir.get_repository_transport(None)
1545
control_files = LockableFiles(repo_transport, 'lock', LockDir)
1546
text_store = self._get_text_store(repo_transport, control_files)
1547
control_store = self._get_control_store(repo_transport, control_files)
1548
_revision_store = self._get_revision_store(repo_transport, control_files)
1549
return KnitRepository(_format=self,
1551
control_files=control_files,
1552
_revision_store=_revision_store,
1553
control_store=control_store,
1554
text_store=text_store)
1557
# formats which have no format string are not discoverable
1558
# and not independently creatable, so are not registered.
1559
RepositoryFormat.register_format(RepositoryFormat7())
1560
_default_format = RepositoryFormatKnit1()
1561
RepositoryFormat.register_format(_default_format)
1562
RepositoryFormat.set_default_format(_default_format)
1563
_legacy_formats = [RepositoryFormat4(),
1564
RepositoryFormat5(),
1565
RepositoryFormat6()]
3359
1568
class InterRepository(InterObject):
3360
1569
"""This class represents operations taking place between two repositories.
3362
1571
Its instances have methods like copy_content and fetch, and contain
3363
references to the source and target repositories these operations can be
1572
references to the source and target repositories these operations can be
3364
1573
carried out on.
3366
1575
Often we will provide convenience methods on 'repository' which carry out
3631
1754
# we do not have a revision as that would be pointless.
3632
1755
target_ids = set(self.target._all_possible_ids())
3633
1756
possibly_present_revisions = target_ids.intersection(source_ids_set)
3634
actually_present_revisions = set(
3635
self.target._eliminate_revisions_not_present(possibly_present_revisions))
1757
actually_present_revisions = set(self.target._eliminate_revisions_not_present(possibly_present_revisions))
3636
1758
required_revisions = source_ids_set.difference(actually_present_revisions)
1759
required_topo_revisions = [rev_id for rev_id in source_ids if rev_id in required_revisions]
3637
1760
if revision_id is not None:
3638
1761
# we used get_ancestry to determine source_ids then we are assured all
3639
1762
# revisions referenced are present as they are installed in topological order.
3640
1763
# and the tip revision was validated by get_ancestry.
3641
result_set = required_revisions
1764
return required_topo_revisions
3643
# if we just grabbed the possibly available ids, then
1766
# if we just grabbed the possibly available ids, then
3644
1767
# we only have an estimate of whats available and need to validate
3645
1768
# that against the revision records.
3647
self.source._eliminate_revisions_not_present(required_revisions))
3648
return self.source.revision_ids_to_search_result(result_set)
3651
class InterKnitRepo(InterSameDataRepository):
1769
return self.source._eliminate_revisions_not_present(required_topo_revisions)
1772
class InterKnitRepo(InterRepository):
3652
1773
"""Optimised code paths between Knit based repositories."""
3655
def _get_repo_format_to_test(self):
3656
from bzrlib.repofmt import knitrepo
3657
return knitrepo.RepositoryFormatKnit1()
1775
_matching_repo_format = RepositoryFormatKnit1()
1776
"""Repository format for testing with."""
3660
1779
def is_compatible(source, target):
3661
1780
"""Be compatible with known Knit formats.
3663
1782
We don't test for the stores being of specific types because that
3664
could lead to confusing results, and there is no need to be
1783
could lead to confusing results, and there is no need to be
3665
1784
overly general.
3667
from bzrlib.repofmt.knitrepo import RepositoryFormatKnit
3669
are_knits = (isinstance(source._format, RepositoryFormatKnit) and
3670
isinstance(target._format, RepositoryFormatKnit))
1787
return (isinstance(source._format, (RepositoryFormatKnit1)) and
1788
isinstance(target._format, (RepositoryFormatKnit1)))
3671
1789
except AttributeError:
3673
return are_knits and InterRepository._same_model(source, target)
1793
def fetch(self, revision_id=None, pb=None):
1794
"""See InterRepository.fetch()."""
1795
from bzrlib.fetch import KnitRepoFetcher
1796
mutter("Using fetch logic to copy between %s(%s) and %s(%s)",
1797
self.source, self.source._format, self.target, self.target._format)
1798
f = KnitRepoFetcher(to_repository=self.target,
1799
from_repository=self.source,
1800
last_revision=revision_id,
1802
return f.count_copied, f.failed_revisions
3675
1804
@needs_read_lock
3676
def search_missing_revision_ids(self, revision_id=None, find_ghosts=True):
1805
def missing_revision_ids(self, revision_id=None):
3677
1806
"""See InterRepository.missing_revision_ids()."""
3678
1807
if revision_id is not None:
3679
1808
source_ids = self.source.get_ancestry(revision_id)
3680
if source_ids[0] is not None:
3681
raise AssertionError()
1809
assert source_ids[0] is None
3682
1810
source_ids.pop(0)
3684
source_ids = self.source.all_revision_ids()
1812
source_ids = self.source._all_possible_ids()
3685
1813
source_ids_set = set(source_ids)
3686
1814
# source_ids is the worst possible case we may need to pull.
3687
1815
# now we want to filter source_ids against what we actually
3688
1816
# have in target, but don't try to check for existence where we know
3689
1817
# we do not have a revision as that would be pointless.
3690
target_ids = set(self.target.all_revision_ids())
1818
target_ids = set(self.target._all_possible_ids())
3691
1819
possibly_present_revisions = target_ids.intersection(source_ids_set)
3692
actually_present_revisions = set(
3693
self.target._eliminate_revisions_not_present(possibly_present_revisions))
1820
actually_present_revisions = set(self.target._eliminate_revisions_not_present(possibly_present_revisions))
3694
1821
required_revisions = source_ids_set.difference(actually_present_revisions)
1822
required_topo_revisions = [rev_id for rev_id in source_ids if rev_id in required_revisions]
3695
1823
if revision_id is not None:
3696
1824
# we used get_ancestry to determine source_ids then we are assured all
3697
1825
# revisions referenced are present as they are installed in topological order.
3698
1826
# and the tip revision was validated by get_ancestry.
3699
result_set = required_revisions
1827
return required_topo_revisions
3701
# if we just grabbed the possibly available ids, then
1829
# if we just grabbed the possibly available ids, then
3702
1830
# we only have an estimate of whats available and need to validate
3703
1831
# that against the revision records.
3705
self.source._eliminate_revisions_not_present(required_revisions))
3706
return self.source.revision_ids_to_search_result(result_set)
3709
class InterDifferingSerializer(InterRepository):
3712
def _get_repo_format_to_test(self):
3716
def is_compatible(source, target):
3717
"""Be compatible with Knit2 source and Knit3 target"""
3718
# This is redundant with format.check_conversion_target(), however that
3719
# raises an exception, and we just want to say "False" as in we won't
3720
# support converting between these formats.
3721
if 'IDS_never' in debug.debug_flags:
3723
if source.supports_rich_root() and not target.supports_rich_root():
3725
if (source._format.supports_tree_reference
3726
and not target._format.supports_tree_reference):
3728
if target._fallback_repositories and target._format.supports_chks:
3729
# IDS doesn't know how to copy CHKs for the parent inventories it
3730
# adds to stacked repos.
3732
if 'IDS_always' in debug.debug_flags:
3734
# Only use this code path for local source and target. IDS does far
3735
# too much IO (both bandwidth and roundtrips) over a network.
3736
if not source.bzrdir.transport.base.startswith('file:///'):
3738
if not target.bzrdir.transport.base.startswith('file:///'):
3742
def _get_trees(self, revision_ids, cache):
3744
for rev_id in revision_ids:
3746
possible_trees.append((rev_id, cache[rev_id]))
3748
# Not cached, but inventory might be present anyway.
3750
tree = self.source.revision_tree(rev_id)
3751
except errors.NoSuchRevision:
3752
# Nope, parent is ghost.
3755
cache[rev_id] = tree
3756
possible_trees.append((rev_id, tree))
3757
return possible_trees
3759
def _get_delta_for_revision(self, tree, parent_ids, possible_trees):
3760
"""Get the best delta and base for this revision.
3762
:return: (basis_id, delta)
3765
# Generate deltas against each tree, to find the shortest.
3766
texts_possibly_new_in_tree = set()
3767
for basis_id, basis_tree in possible_trees:
3768
delta = tree.inventory._make_delta(basis_tree.inventory)
3769
for old_path, new_path, file_id, new_entry in delta:
3770
if new_path is None:
3771
# This file_id isn't present in the new rev, so we don't
3775
# Rich roots are handled elsewhere...
3777
kind = new_entry.kind
3778
if kind != 'directory' and kind != 'file':
3779
# No text record associated with this inventory entry.
3781
# This is a directory or file that has changed somehow.
3782
texts_possibly_new_in_tree.add((file_id, new_entry.revision))
3783
deltas.append((len(delta), basis_id, delta))
3785
return deltas[0][1:]
3787
def _fetch_parent_invs_for_stacking(self, parent_map, cache):
3788
"""Find all parent revisions that are absent, but for which the
3789
inventory is present, and copy those inventories.
3791
This is necessary to preserve correctness when the source is stacked
3792
without fallbacks configured. (Note that in cases like upgrade the
3793
source may be not have _fallback_repositories even though it is
3797
for parents in parent_map.values():
3798
parent_revs.update(parents)
3799
present_parents = self.source.get_parent_map(parent_revs)
3800
absent_parents = set(parent_revs).difference(present_parents)
3801
parent_invs_keys_for_stacking = self.source.inventories.get_parent_map(
3802
(rev_id,) for rev_id in absent_parents)
3803
parent_inv_ids = [key[-1] for key in parent_invs_keys_for_stacking]
3804
for parent_tree in self.source.revision_trees(parent_inv_ids):
3805
current_revision_id = parent_tree.get_revision_id()
3806
parents_parents_keys = parent_invs_keys_for_stacking[
3807
(current_revision_id,)]
3808
parents_parents = [key[-1] for key in parents_parents_keys]
3809
basis_id = _mod_revision.NULL_REVISION
3810
basis_tree = self.source.revision_tree(basis_id)
3811
delta = parent_tree.inventory._make_delta(basis_tree.inventory)
3812
self.target.add_inventory_by_delta(
3813
basis_id, delta, current_revision_id, parents_parents)
3814
cache[current_revision_id] = parent_tree
3816
def _fetch_batch(self, revision_ids, basis_id, cache, a_graph=None):
3817
"""Fetch across a few revisions.
3819
:param revision_ids: The revisions to copy
3820
:param basis_id: The revision_id of a tree that must be in cache, used
3821
as a basis for delta when no other base is available
3822
:param cache: A cache of RevisionTrees that we can use.
3823
:param a_graph: A Graph object to determine the heads() of the
3824
rich-root data stream.
3825
:return: The revision_id of the last converted tree. The RevisionTree
3826
for it will be in cache
3828
# Walk though all revisions; get inventory deltas, copy referenced
3829
# texts that delta references, insert the delta, revision and
3831
root_keys_to_create = set()
3834
pending_revisions = []
3835
parent_map = self.source.get_parent_map(revision_ids)
3836
self._fetch_parent_invs_for_stacking(parent_map, cache)
3837
self.source._safe_to_return_from_cache = True
3838
for tree in self.source.revision_trees(revision_ids):
3839
# Find a inventory delta for this revision.
3840
# Find text entries that need to be copied, too.
3841
current_revision_id = tree.get_revision_id()
3842
parent_ids = parent_map.get(current_revision_id, ())
3843
parent_trees = self._get_trees(parent_ids, cache)
3844
possible_trees = list(parent_trees)
3845
if len(possible_trees) == 0:
3846
# There either aren't any parents, or the parents are ghosts,
3847
# so just use the last converted tree.
3848
possible_trees.append((basis_id, cache[basis_id]))
3849
basis_id, delta = self._get_delta_for_revision(tree, parent_ids,
3851
revision = self.source.get_revision(current_revision_id)
3852
pending_deltas.append((basis_id, delta,
3853
current_revision_id, revision.parent_ids))
3854
if self._converting_to_rich_root:
3855
self._revision_id_to_root_id[current_revision_id] = \
3857
# Determine which texts are in present in this revision but not in
3858
# any of the available parents.
3859
texts_possibly_new_in_tree = set()
3860
for old_path, new_path, file_id, entry in delta:
3861
if new_path is None:
3862
# This file_id isn't present in the new rev
3866
if not self.target.supports_rich_root():
3867
# The target doesn't support rich root, so we don't
3870
if self._converting_to_rich_root:
3871
# This can't be copied normally, we have to insert
3873
root_keys_to_create.add((file_id, entry.revision))
3876
texts_possibly_new_in_tree.add((file_id, entry.revision))
3877
for basis_id, basis_tree in possible_trees:
3878
basis_inv = basis_tree.inventory
3879
for file_key in list(texts_possibly_new_in_tree):
3880
file_id, file_revision = file_key
3882
entry = basis_inv[file_id]
3883
except errors.NoSuchId:
3885
if entry.revision == file_revision:
3886
texts_possibly_new_in_tree.remove(file_key)
3887
text_keys.update(texts_possibly_new_in_tree)
3888
pending_revisions.append(revision)
3889
cache[current_revision_id] = tree
3890
basis_id = current_revision_id
3891
self.source._safe_to_return_from_cache = False
3893
from_texts = self.source.texts
3894
to_texts = self.target.texts
3895
if root_keys_to_create:
3896
root_stream = _mod_fetch._new_root_data_stream(
3897
root_keys_to_create, self._revision_id_to_root_id, parent_map,
3898
self.source, graph=a_graph)
3899
to_texts.insert_record_stream(root_stream)
3900
to_texts.insert_record_stream(from_texts.get_record_stream(
3901
text_keys, self.target._format._fetch_order,
3902
not self.target._format._fetch_uses_deltas))
3903
# insert inventory deltas
3904
for delta in pending_deltas:
3905
self.target.add_inventory_by_delta(*delta)
3906
if self.target._fallback_repositories:
3907
# Make sure this stacked repository has all the parent inventories
3908
# for the new revisions that we are about to insert. We do this
3909
# before adding the revisions so that no revision is added until
3910
# all the inventories it may depend on are added.
3911
# Note that this is overzealous, as we may have fetched these in an
3914
revision_ids = set()
3915
for revision in pending_revisions:
3916
revision_ids.add(revision.revision_id)
3917
parent_ids.update(revision.parent_ids)
3918
parent_ids.difference_update(revision_ids)
3919
parent_ids.discard(_mod_revision.NULL_REVISION)
3920
parent_map = self.source.get_parent_map(parent_ids)
3921
# we iterate over parent_map and not parent_ids because we don't
3922
# want to try copying any revision which is a ghost
3923
for parent_tree in self.source.revision_trees(parent_map):
3924
current_revision_id = parent_tree.get_revision_id()
3925
parents_parents = parent_map[current_revision_id]
3926
possible_trees = self._get_trees(parents_parents, cache)
3927
if len(possible_trees) == 0:
3928
# There either aren't any parents, or the parents are
3929
# ghosts, so just use the last converted tree.
3930
possible_trees.append((basis_id, cache[basis_id]))
3931
basis_id, delta = self._get_delta_for_revision(parent_tree,
3932
parents_parents, possible_trees)
3933
self.target.add_inventory_by_delta(
3934
basis_id, delta, current_revision_id, parents_parents)
3935
# insert signatures and revisions
3936
for revision in pending_revisions:
3938
signature = self.source.get_signature_text(
3939
revision.revision_id)
3940
self.target.add_signature_text(revision.revision_id,
3942
except errors.NoSuchRevision:
3944
self.target.add_revision(revision.revision_id, revision)
3947
def _fetch_all_revisions(self, revision_ids, pb):
3948
"""Fetch everything for the list of revisions.
3950
:param revision_ids: The list of revisions to fetch. Must be in
3952
:param pb: A ProgressTask
3955
basis_id, basis_tree = self._get_basis(revision_ids[0])
3957
cache = lru_cache.LRUCache(100)
3958
cache[basis_id] = basis_tree
3959
del basis_tree # We don't want to hang on to it here
3961
if self._converting_to_rich_root and len(revision_ids) > 100:
3962
a_graph = _mod_fetch._get_rich_root_heads_graph(self.source,
3967
for offset in range(0, len(revision_ids), batch_size):
3968
self.target.start_write_group()
3970
pb.update('Transferring revisions', offset,
3972
batch = revision_ids[offset:offset+batch_size]
3973
basis_id = self._fetch_batch(batch, basis_id, cache,
3976
self.source._safe_to_return_from_cache = False
3977
self.target.abort_write_group()
3980
hint = self.target.commit_write_group()
3983
if hints and self.target._format.pack_compresses:
3984
self.target.pack(hint=hints)
3985
pb.update('Transferring revisions', len(revision_ids),
3989
def fetch(self, revision_id=None, pb=None, find_ghosts=False,
3991
"""See InterRepository.fetch()."""
3992
if fetch_spec is not None:
3993
raise AssertionError("Not implemented yet...")
3994
ui.ui_factory.warn_experimental_format_fetch(self)
3995
if (not self.source.supports_rich_root()
3996
and self.target.supports_rich_root()):
3997
self._converting_to_rich_root = True
3998
self._revision_id_to_root_id = {}
4000
self._converting_to_rich_root = False
4001
# See <https://launchpad.net/bugs/456077> asking for a warning here
4002
if self.source._format.network_name() != self.target._format.network_name():
4003
ui.ui_factory.show_user_warning('cross_format_fetch',
4004
from_format=self.source._format,
4005
to_format=self.target._format)
4006
revision_ids = self.target.search_missing_revision_ids(self.source,
4007
revision_id, find_ghosts=find_ghosts).get_keys()
4008
if not revision_ids:
4010
revision_ids = tsort.topo_sort(
4011
self.source.get_graph().get_parent_map(revision_ids))
4012
if not revision_ids:
4014
# Walk though all revisions; get inventory deltas, copy referenced
4015
# texts that delta references, insert the delta, revision and
4018
my_pb = ui.ui_factory.nested_progress_bar()
4021
symbol_versioning.warn(
4022
symbol_versioning.deprecated_in((1, 14, 0))
4023
% "pb parameter to fetch()")
4026
self._fetch_all_revisions(revision_ids, pb)
4028
if my_pb is not None:
4030
return len(revision_ids), 0
4032
def _get_basis(self, first_revision_id):
4033
"""Get a revision and tree which exists in the target.
4035
This assumes that first_revision_id is selected for transmission
4036
because all other ancestors are already present. If we can't find an
4037
ancestor we fall back to NULL_REVISION since we know that is safe.
4039
:return: (basis_id, basis_tree)
4041
first_rev = self.source.get_revision(first_revision_id)
4043
basis_id = first_rev.parent_ids[0]
4044
# only valid as a basis if the target has it
4045
self.target.get_revision(basis_id)
4046
# Try to get a basis tree - if its a ghost it will hit the
4047
# NoSuchRevision case.
4048
basis_tree = self.source.revision_tree(basis_id)
4049
except (IndexError, errors.NoSuchRevision):
4050
basis_id = _mod_revision.NULL_REVISION
4051
basis_tree = self.source.revision_tree(basis_id)
4052
return basis_id, basis_tree
4055
InterRepository.register_optimiser(InterDifferingSerializer)
4056
InterRepository.register_optimiser(InterSameDataRepository)
1832
return self.source._eliminate_revisions_not_present(required_topo_revisions)
4057
1834
InterRepository.register_optimiser(InterWeaveRepo)
4058
1835
InterRepository.register_optimiser(InterKnitRepo)
1838
class RepositoryTestProviderAdapter(object):
1839
"""A tool to generate a suite testing multiple repository formats at once.
1841
This is done by copying the test once for each transport and injecting
1842
the transport_server, transport_readonly_server, and bzrdir_format and
1843
repository_format classes into each copy. Each copy is also given a new id()
1844
to make it easy to identify.
1847
def __init__(self, transport_server, transport_readonly_server, formats):
1848
self._transport_server = transport_server
1849
self._transport_readonly_server = transport_readonly_server
1850
self._formats = formats
1852
def adapt(self, test):
1853
result = TestSuite()
1854
for repository_format, bzrdir_format in self._formats:
1855
new_test = deepcopy(test)
1856
new_test.transport_server = self._transport_server
1857
new_test.transport_readonly_server = self._transport_readonly_server
1858
new_test.bzrdir_format = bzrdir_format
1859
new_test.repository_format = repository_format
1860
def make_new_test_id():
1861
new_id = "%s(%s)" % (new_test.id(), repository_format.__class__.__name__)
1862
return lambda: new_id
1863
new_test.id = make_new_test_id()
1864
result.addTest(new_test)
1868
class InterRepositoryTestProviderAdapter(object):
1869
"""A tool to generate a suite testing multiple inter repository formats.
1871
This is done by copying the test once for each interrepo provider and injecting
1872
the transport_server, transport_readonly_server, repository_format and
1873
repository_to_format classes into each copy.
1874
Each copy is also given a new id() to make it easy to identify.
1877
def __init__(self, transport_server, transport_readonly_server, formats):
1878
self._transport_server = transport_server
1879
self._transport_readonly_server = transport_readonly_server
1880
self._formats = formats
1882
def adapt(self, test):
1883
result = TestSuite()
1884
for interrepo_class, repository_format, repository_format_to in self._formats:
1885
new_test = deepcopy(test)
1886
new_test.transport_server = self._transport_server
1887
new_test.transport_readonly_server = self._transport_readonly_server
1888
new_test.interrepo_class = interrepo_class
1889
new_test.repository_format = repository_format
1890
new_test.repository_format_to = repository_format_to
1891
def make_new_test_id():
1892
new_id = "%s(%s)" % (new_test.id(), interrepo_class.__name__)
1893
return lambda: new_id
1894
new_test.id = make_new_test_id()
1895
result.addTest(new_test)
1899
def default_test_list():
1900
"""Generate the default list of interrepo permutations to test."""
1902
# test the default InterRepository between format 6 and the current
1904
# XXX: robertc 20060220 reinstate this when there are two supported
1905
# formats which do not have an optimal code path between them.
1906
result.append((InterRepository,
1907
RepositoryFormat6(),
1908
RepositoryFormatKnit1()))
1909
for optimiser in InterRepository._optimisers:
1910
result.append((optimiser,
1911
optimiser._matching_repo_format,
1912
optimiser._matching_repo_format
1914
# if there are specific combinations we want to use, we can add them
4061
1919
class CopyConverter(object):
4062
1920
"""A repository conversion tool which just performs a copy of the content.
4064
1922
This is slow but quite reliable.
4070
1928
:param target_format: The format the resulting repository should be.
4072
1930
self.target_format = target_format
4074
1932
def convert(self, repo, pb):
4075
1933
"""Perform the conversion of to_convert, giving feedback via pb.
4077
1935
:param to_convert: The disk object to convert.
4078
1936
:param pb: a progress bar to use for progress information.
4080
pb = ui.ui_factory.nested_progress_bar()
4083
1941
# this is only useful with metadir layouts - separated repo content.
4084
1942
# trigger an assertion if not such
4085
1943
repo._format.get_format_string()
4086
1944
self.repo_dir = repo.bzrdir
4087
pb.update('Moving repository to repository.backup')
1945
self.step('Moving repository to repository.backup')
4088
1946
self.repo_dir.transport.move('repository', 'repository.backup')
4089
1947
backup_transport = self.repo_dir.transport.clone('repository.backup')
4090
repo._format.check_conversion_target(self.target_format)
4091
1948
self.source_repo = repo._format.open(self.repo_dir,
4093
1950
_override_transport=backup_transport)
4094
pb.update('Creating new repository')
1951
self.step('Creating new repository')
4095
1952
converted = self.target_format.initialize(self.repo_dir,
4096
1953
self.source_repo.is_shared())
4097
1954
converted.lock_write()
4099
pb.update('Copying content')
1956
self.step('Copying content into repository.')
4100
1957
self.source_repo.copy_content_into(converted)
4102
1959
converted.unlock()
4103
pb.update('Deleting old repository content')
1960
self.step('Deleting old repository content.')
4104
1961
self.repo_dir.transport.delete_tree('repository.backup')
4105
ui.ui_factory.note('repository converted')
1962
self.pb.note('repository converted')
1964
def step(self, message):
1965
"""Update the pb by a step."""
1967
self.pb.update(message, self.count, self.total)
1970
class CommitBuilder(object):
1971
"""Provides an interface to build up a commit.
1973
This allows describing a tree to be committed without needing to
1974
know the internals of the format of the repository.
1977
record_root_entry = False
1978
def __init__(self, repository, parents, config, timestamp=None,
1979
timezone=None, committer=None, revprops=None,
1981
"""Initiate a CommitBuilder.
1983
:param repository: Repository to commit to.
1984
:param parents: Revision ids of the parents of the new revision.
1985
:param config: Configuration to use.
1986
:param timestamp: Optional timestamp recorded for commit.
1987
:param timezone: Optional timezone for timestamp.
1988
:param committer: Optional committer to set for commit.
1989
:param revprops: Optional dictionary of revision properties.
1990
:param revision_id: Optional revision id.
1992
self._config = config
1994
if committer is None:
1995
self._committer = self._config.username()
1997
assert isinstance(committer, basestring), type(committer)
1998
self._committer = committer
2000
self.new_inventory = Inventory(None)
2001
self._new_revision_id = revision_id
2002
self.parents = parents
2003
self.repository = repository
2006
if revprops is not None:
2007
self._revprops.update(revprops)
2009
if timestamp is None:
2010
timestamp = time.time()
2011
# Restrict resolution to 1ms
2012
self._timestamp = round(timestamp, 3)
2014
if timezone is None:
2015
self._timezone = local_time_offset()
2017
self._timezone = int(timezone)
2019
self._generate_revision_if_needed()
2021
def commit(self, message):
2022
"""Make the actual commit.
2024
:return: The revision id of the recorded revision.
2026
rev = Revision(timestamp=self._timestamp,
2027
timezone=self._timezone,
2028
committer=self._committer,
2030
inventory_sha1=self.inv_sha1,
2031
revision_id=self._new_revision_id,
2032
properties=self._revprops)
2033
rev.parent_ids = self.parents
2034
self.repository.add_revision(self._new_revision_id, rev,
2035
self.new_inventory, self._config)
2036
return self._new_revision_id
2038
def finish_inventory(self):
2039
"""Tell the builder that the inventory is finished."""
2040
if self.new_inventory.root is None:
2041
symbol_versioning.warn('Root entry should be supplied to'
2042
' record_entry_contents, as of bzr 0.10.',
2043
DeprecationWarning, stacklevel=2)
2044
self.new_inventory.add(InventoryDirectory(ROOT_ID, '', None))
2045
self.new_inventory.revision_id = self._new_revision_id
2046
self.inv_sha1 = self.repository.add_inventory(
2047
self._new_revision_id,
2052
def _gen_revision_id(self):
2053
"""Return new revision-id."""
2054
s = '%s-%s-' % (self._config.user_email(),
2055
compact_date(self._timestamp))
2056
s += hexlify(rand_bytes(8))
2059
def _generate_revision_if_needed(self):
2060
"""Create a revision id if None was supplied.
2062
If the repository can not support user-specified revision ids
2063
they should override this function and raise UnsupportedOperation
2064
if _new_revision_id is not None.
2066
:raises: UnsupportedOperation
2068
if self._new_revision_id is None:
2069
self._new_revision_id = self._gen_revision_id()
2071
def record_entry_contents(self, ie, parent_invs, path, tree):
2072
"""Record the content of ie from tree into the commit if needed.
2074
Side effect: sets ie.revision when unchanged
2076
:param ie: An inventory entry present in the commit.
2077
:param parent_invs: The inventories of the parent revisions of the
2079
:param path: The path the entry is at in the tree.
2080
:param tree: The tree which contains this entry and should be used to
2083
if self.new_inventory.root is None and ie.parent_id is not None:
2084
symbol_versioning.warn('Root entry should be supplied to'
2085
' record_entry_contents, as of bzr 0.10.',
2086
DeprecationWarning, stacklevel=2)
2087
self.record_entry_contents(tree.inventory.root.copy(), parent_invs,
2089
self.new_inventory.add(ie)
2091
# ie.revision is always None if the InventoryEntry is considered
2092
# for committing. ie.snapshot will record the correct revision
2093
# which may be the sole parent if it is untouched.
2094
if ie.revision is not None:
2097
# In this revision format, root entries have no knit or weave
2098
if ie is self.new_inventory.root:
2099
if len(parent_invs):
2100
ie.revision = parent_invs[0].root.revision
2104
previous_entries = ie.find_previous_heads(
2106
self.repository.weave_store,
2107
self.repository.get_transaction())
2108
# we are creating a new revision for ie in the history store
2110
ie.snapshot(self._new_revision_id, path, previous_entries, tree, self)
2112
def modified_directory(self, file_id, file_parents):
2113
"""Record the presence of a symbolic link.
2115
:param file_id: The file_id of the link to record.
2116
:param file_parents: The per-file parent revision ids.
2118
self._add_text_to_weave(file_id, [], file_parents.keys())
2120
def modified_file_text(self, file_id, file_parents,
2121
get_content_byte_lines, text_sha1=None,
2123
"""Record the text of file file_id
2125
:param file_id: The file_id of the file to record the text of.
2126
:param file_parents: The per-file parent revision ids.
2127
:param get_content_byte_lines: A callable which will return the byte
2129
:param text_sha1: Optional SHA1 of the file contents.
2130
:param text_size: Optional size of the file contents.
2132
# mutter('storing text of file {%s} in revision {%s} into %r',
2133
# file_id, self._new_revision_id, self.repository.weave_store)
2134
# special case to avoid diffing on renames or
2136
if (len(file_parents) == 1
2137
and text_sha1 == file_parents.values()[0].text_sha1
2138
and text_size == file_parents.values()[0].text_size):
2139
previous_ie = file_parents.values()[0]
2140
versionedfile = self.repository.weave_store.get_weave(file_id,
2141
self.repository.get_transaction())
2142
versionedfile.clone_text(self._new_revision_id,
2143
previous_ie.revision, file_parents.keys())
2144
return text_sha1, text_size
2146
new_lines = get_content_byte_lines()
2147
# TODO: Rather than invoking sha_strings here, _add_text_to_weave
2148
# should return the SHA1 and size
2149
self._add_text_to_weave(file_id, new_lines, file_parents.keys())
2150
return osutils.sha_strings(new_lines), \
2151
sum(map(len, new_lines))
2153
def modified_link(self, file_id, file_parents, link_target):
2154
"""Record the presence of a symbolic link.
2156
:param file_id: The file_id of the link to record.
2157
:param file_parents: The per-file parent revision ids.
2158
:param link_target: Target location of this link.
2160
self._add_text_to_weave(file_id, [], file_parents.keys())
2162
def _add_text_to_weave(self, file_id, new_lines, parents):
2163
versionedfile = self.repository.weave_store.get_weave_or_empty(
2164
file_id, self.repository.get_transaction())
2165
versionedfile.add_lines(self._new_revision_id, parents, new_lines)
2166
versionedfile.clear_cache()
2169
class _CommitBuilder(CommitBuilder):
2170
"""Temporary class so old CommitBuilders are detected properly
2172
Note: CommitBuilder works whether or not root entry is recorded.
2175
record_root_entry = True
4109
2178
_unescape_map = {
4132
2195
"""Unescape predefined XML entities in a string of data."""
4133
2196
global _unescape_re
4134
2197
if _unescape_re is None:
4135
_unescape_re = re.compile('\&([^;]*);')
2198
_unescape_re = re.compile('\&([^;]*);')
4136
2199
return _unescape_re.sub(_unescaper, data)
4139
class _VersionedFileChecker(object):
4141
def __init__(self, repository, text_key_references=None, ancestors=None):
4142
self.repository = repository
4143
self.text_index = self.repository._generate_text_key_index(
4144
text_key_references=text_key_references, ancestors=ancestors)
4146
def calculate_file_version_parents(self, text_key):
4147
"""Calculate the correct parents for a file version according to
4150
parent_keys = self.text_index[text_key]
4151
if parent_keys == [_mod_revision.NULL_REVISION]:
4153
return tuple(parent_keys)
4155
def check_file_version_parents(self, texts, progress_bar=None):
4156
"""Check the parents stored in a versioned file are correct.
4158
It also detects file versions that are not referenced by their
4159
corresponding revision's inventory.
4161
:returns: A tuple of (wrong_parents, dangling_file_versions).
4162
wrong_parents is a dict mapping {revision_id: (stored_parents,
4163
correct_parents)} for each revision_id where the stored parents
4164
are not correct. dangling_file_versions is a set of (file_id,
4165
revision_id) tuples for versions that are present in this versioned
4166
file, but not used by the corresponding inventory.
4168
local_progress = None
4169
if progress_bar is None:
4170
local_progress = ui.ui_factory.nested_progress_bar()
4171
progress_bar = local_progress
4173
return self._check_file_version_parents(texts, progress_bar)
4176
local_progress.finished()
4178
def _check_file_version_parents(self, texts, progress_bar):
4179
"""See check_file_version_parents."""
4181
self.file_ids = set([file_id for file_id, _ in
4182
self.text_index.iterkeys()])
4183
# text keys is now grouped by file_id
4184
n_versions = len(self.text_index)
4185
progress_bar.update('loading text store', 0, n_versions)
4186
parent_map = self.repository.texts.get_parent_map(self.text_index)
4187
# On unlistable transports this could well be empty/error...
4188
text_keys = self.repository.texts.keys()
4189
unused_keys = frozenset(text_keys) - set(self.text_index)
4190
for num, key in enumerate(self.text_index.iterkeys()):
4191
progress_bar.update('checking text graph', num, n_versions)
4192
correct_parents = self.calculate_file_version_parents(key)
4194
knit_parents = parent_map[key]
4195
except errors.RevisionNotPresent:
4198
if correct_parents != knit_parents:
4199
wrong_parents[key] = (knit_parents, correct_parents)
4200
return wrong_parents, unused_keys
4203
def _old_get_graph(repository, revision_id):
4204
"""DO NOT USE. That is all. I'm serious."""
4205
graph = repository.get_graph()
4206
revision_graph = dict(((key, value) for key, value in
4207
graph.iter_ancestry([revision_id]) if value is not None))
4208
return _strip_NULL_ghosts(revision_graph)
4211
def _strip_NULL_ghosts(revision_graph):
4212
"""Also don't use this. more compatibility code for unmigrated clients."""
4213
# Filter ghosts, and null:
4214
if _mod_revision.NULL_REVISION in revision_graph:
4215
del revision_graph[_mod_revision.NULL_REVISION]
4216
for key, parents in revision_graph.items():
4217
revision_graph[key] = tuple(parent for parent in parents if parent
4219
return revision_graph
4222
class StreamSink(object):
4223
"""An object that can insert a stream into a repository.
4225
This interface handles the complexity of reserialising inventories and
4226
revisions from different formats, and allows unidirectional insertion into
4227
stacked repositories without looking for the missing basis parents
4231
def __init__(self, target_repo):
4232
self.target_repo = target_repo
4234
def insert_stream(self, stream, src_format, resume_tokens):
4235
"""Insert a stream's content into the target repository.
4237
:param src_format: a bzr repository format.
4239
:return: a list of resume tokens and an iterable of keys additional
4240
items required before the insertion can be completed.
4242
self.target_repo.lock_write()
4245
self.target_repo.resume_write_group(resume_tokens)
4248
self.target_repo.start_write_group()
4251
# locked_insert_stream performs a commit|suspend.
4252
return self._locked_insert_stream(stream, src_format, is_resume)
4254
self.target_repo.abort_write_group(suppress_errors=True)
4257
self.target_repo.unlock()
4259
def _locked_insert_stream(self, stream, src_format, is_resume):
4260
to_serializer = self.target_repo._format._serializer
4261
src_serializer = src_format._serializer
4263
if to_serializer == src_serializer:
4264
# If serializers match and the target is a pack repository, set the
4265
# write cache size on the new pack. This avoids poor performance
4266
# on transports where append is unbuffered (such as
4267
# RemoteTransport). This is safe to do because nothing should read
4268
# back from the target repository while a stream with matching
4269
# serialization is being inserted.
4270
# The exception is that a delta record from the source that should
4271
# be a fulltext may need to be expanded by the target (see
4272
# test_fetch_revisions_with_deltas_into_pack); but we take care to
4273
# explicitly flush any buffered writes first in that rare case.
4275
new_pack = self.target_repo._pack_collection._new_pack
4276
except AttributeError:
4277
# Not a pack repository
4280
new_pack.set_write_cache_size(1024*1024)
4281
for substream_type, substream in stream:
4282
if 'stream' in debug.debug_flags:
4283
mutter('inserting substream: %s', substream_type)
4284
if substream_type == 'texts':
4285
self.target_repo.texts.insert_record_stream(substream)
4286
elif substream_type == 'inventories':
4287
if src_serializer == to_serializer:
4288
self.target_repo.inventories.insert_record_stream(
4291
self._extract_and_insert_inventories(
4292
substream, src_serializer)
4293
elif substream_type == 'inventory-deltas':
4294
self._extract_and_insert_inventory_deltas(
4295
substream, src_serializer)
4296
elif substream_type == 'chk_bytes':
4297
# XXX: This doesn't support conversions, as it assumes the
4298
# conversion was done in the fetch code.
4299
self.target_repo.chk_bytes.insert_record_stream(substream)
4300
elif substream_type == 'revisions':
4301
# This may fallback to extract-and-insert more often than
4302
# required if the serializers are different only in terms of
4304
if src_serializer == to_serializer:
4305
self.target_repo.revisions.insert_record_stream(
4308
self._extract_and_insert_revisions(substream,
4310
elif substream_type == 'signatures':
4311
self.target_repo.signatures.insert_record_stream(substream)
4313
raise AssertionError('kaboom! %s' % (substream_type,))
4314
# Done inserting data, and the missing_keys calculations will try to
4315
# read back from the inserted data, so flush the writes to the new pack
4316
# (if this is pack format).
4317
if new_pack is not None:
4318
new_pack._write_data('', flush=True)
4319
# Find all the new revisions (including ones from resume_tokens)
4320
missing_keys = self.target_repo.get_missing_parent_inventories(
4321
check_for_missing_texts=is_resume)
4323
for prefix, versioned_file in (
4324
('texts', self.target_repo.texts),
4325
('inventories', self.target_repo.inventories),
4326
('revisions', self.target_repo.revisions),
4327
('signatures', self.target_repo.signatures),
4328
('chk_bytes', self.target_repo.chk_bytes),
4330
if versioned_file is None:
4332
# TODO: key is often going to be a StaticTuple object
4333
# I don't believe we can define a method by which
4334
# (prefix,) + StaticTuple will work, though we could
4335
# define a StaticTuple.sq_concat that would allow you to
4336
# pass in either a tuple or a StaticTuple as the second
4337
# object, so instead we could have:
4338
# StaticTuple(prefix) + key here...
4339
missing_keys.update((prefix,) + key for key in
4340
versioned_file.get_missing_compression_parent_keys())
4341
except NotImplementedError:
4342
# cannot even attempt suspending, and missing would have failed
4343
# during stream insertion.
4344
missing_keys = set()
4347
# suspend the write group and tell the caller what we is
4348
# missing. We know we can suspend or else we would not have
4349
# entered this code path. (All repositories that can handle
4350
# missing keys can handle suspending a write group).
4351
write_group_tokens = self.target_repo.suspend_write_group()
4352
return write_group_tokens, missing_keys
4353
hint = self.target_repo.commit_write_group()
4354
if (to_serializer != src_serializer and
4355
self.target_repo._format.pack_compresses):
4356
self.target_repo.pack(hint=hint)
4359
def _extract_and_insert_inventory_deltas(self, substream, serializer):
4360
target_rich_root = self.target_repo._format.rich_root_data
4361
target_tree_refs = self.target_repo._format.supports_tree_reference
4362
for record in substream:
4363
# Insert the delta directly
4364
inventory_delta_bytes = record.get_bytes_as('fulltext')
4365
deserialiser = inventory_delta.InventoryDeltaDeserializer()
4367
parse_result = deserialiser.parse_text_bytes(
4368
inventory_delta_bytes)
4369
except inventory_delta.IncompatibleInventoryDelta, err:
4370
trace.mutter("Incompatible delta: %s", err.msg)
4371
raise errors.IncompatibleRevision(self.target_repo._format)
4372
basis_id, new_id, rich_root, tree_refs, inv_delta = parse_result
4373
revision_id = new_id
4374
parents = [key[0] for key in record.parents]
4375
self.target_repo.add_inventory_by_delta(
4376
basis_id, inv_delta, revision_id, parents)
4378
def _extract_and_insert_inventories(self, substream, serializer,
4380
"""Generate a new inventory versionedfile in target, converting data.
4382
The inventory is retrieved from the source, (deserializing it), and
4383
stored in the target (reserializing it in a different format).
4385
target_rich_root = self.target_repo._format.rich_root_data
4386
target_tree_refs = self.target_repo._format.supports_tree_reference
4387
for record in substream:
4388
# It's not a delta, so it must be a fulltext in the source
4389
# serializer's format.
4390
bytes = record.get_bytes_as('fulltext')
4391
revision_id = record.key[0]
4392
inv = serializer.read_inventory_from_string(bytes, revision_id)
4393
parents = [key[0] for key in record.parents]
4394
self.target_repo.add_inventory(revision_id, inv, parents)
4395
# No need to keep holding this full inv in memory when the rest of
4396
# the substream is likely to be all deltas.
4399
def _extract_and_insert_revisions(self, substream, serializer):
4400
for record in substream:
4401
bytes = record.get_bytes_as('fulltext')
4402
revision_id = record.key[0]
4403
rev = serializer.read_revision_from_string(bytes)
4404
if rev.revision_id != revision_id:
4405
raise AssertionError('wtf: %s != %s' % (rev, revision_id))
4406
self.target_repo.add_revision(revision_id, rev)
4409
if self.target_repo._format._fetch_reconcile:
4410
self.target_repo.reconcile()
4413
class StreamSource(object):
4414
"""A source of a stream for fetching between repositories."""
4416
def __init__(self, from_repository, to_format):
4417
"""Create a StreamSource streaming from from_repository."""
4418
self.from_repository = from_repository
4419
self.to_format = to_format
4421
def delta_on_metadata(self):
4422
"""Return True if delta's are permitted on metadata streams.
4424
That is on revisions and signatures.
4426
src_serializer = self.from_repository._format._serializer
4427
target_serializer = self.to_format._serializer
4428
return (self.to_format._fetch_uses_deltas and
4429
src_serializer == target_serializer)
4431
def _fetch_revision_texts(self, revs):
4432
# fetch signatures first and then the revision texts
4433
# may need to be a InterRevisionStore call here.
4434
from_sf = self.from_repository.signatures
4435
# A missing signature is just skipped.
4436
keys = [(rev_id,) for rev_id in revs]
4437
signatures = versionedfile.filter_absent(from_sf.get_record_stream(
4439
self.to_format._fetch_order,
4440
not self.to_format._fetch_uses_deltas))
4441
# If a revision has a delta, this is actually expanded inside the
4442
# insert_record_stream code now, which is an alternate fix for
4444
from_rf = self.from_repository.revisions
4445
revisions = from_rf.get_record_stream(
4447
self.to_format._fetch_order,
4448
not self.delta_on_metadata())
4449
return [('signatures', signatures), ('revisions', revisions)]
4451
def _generate_root_texts(self, revs):
4452
"""This will be called by get_stream between fetching weave texts and
4453
fetching the inventory weave.
4455
if self._rich_root_upgrade():
4456
return _mod_fetch.Inter1and2Helper(
4457
self.from_repository).generate_root_texts(revs)
4461
def get_stream(self, search):
4463
revs = search.get_keys()
4464
graph = self.from_repository.get_graph()
4465
revs = tsort.topo_sort(graph.get_parent_map(revs))
4466
data_to_fetch = self.from_repository.item_keys_introduced_by(revs)
4468
for knit_kind, file_id, revisions in data_to_fetch:
4469
if knit_kind != phase:
4471
# Make a new progress bar for this phase
4472
if knit_kind == "file":
4473
# Accumulate file texts
4474
text_keys.extend([(file_id, revision) for revision in
4476
elif knit_kind == "inventory":
4477
# Now copy the file texts.
4478
from_texts = self.from_repository.texts
4479
yield ('texts', from_texts.get_record_stream(
4480
text_keys, self.to_format._fetch_order,
4481
not self.to_format._fetch_uses_deltas))
4482
# Cause an error if a text occurs after we have done the
4485
# Before we process the inventory we generate the root
4486
# texts (if necessary) so that the inventories references
4488
for _ in self._generate_root_texts(revs):
4490
# we fetch only the referenced inventories because we do not
4491
# know for unselected inventories whether all their required
4492
# texts are present in the other repository - it could be
4494
for info in self._get_inventory_stream(revs):
4496
elif knit_kind == "signatures":
4497
# Nothing to do here; this will be taken care of when
4498
# _fetch_revision_texts happens.
4500
elif knit_kind == "revisions":
4501
for record in self._fetch_revision_texts(revs):
4504
raise AssertionError("Unknown knit kind %r" % knit_kind)
4506
def get_stream_for_missing_keys(self, missing_keys):
4507
# missing keys can only occur when we are byte copying and not
4508
# translating (because translation means we don't send
4509
# unreconstructable deltas ever).
4511
keys['texts'] = set()
4512
keys['revisions'] = set()
4513
keys['inventories'] = set()
4514
keys['chk_bytes'] = set()
4515
keys['signatures'] = set()
4516
for key in missing_keys:
4517
keys[key[0]].add(key[1:])
4518
if len(keys['revisions']):
4519
# If we allowed copying revisions at this point, we could end up
4520
# copying a revision without copying its required texts: a
4521
# violation of the requirements for repository integrity.
4522
raise AssertionError(
4523
'cannot copy revisions to fill in missing deltas %s' % (
4524
keys['revisions'],))
4525
for substream_kind, keys in keys.iteritems():
4526
vf = getattr(self.from_repository, substream_kind)
4527
if vf is None and keys:
4528
raise AssertionError(
4529
"cannot fill in keys for a versioned file we don't"
4530
" have: %s needs %s" % (substream_kind, keys))
4532
# No need to stream something we don't have
4534
if substream_kind == 'inventories':
4535
# Some missing keys are genuinely ghosts, filter those out.
4536
present = self.from_repository.inventories.get_parent_map(keys)
4537
revs = [key[0] for key in present]
4538
# Get the inventory stream more-or-less as we do for the
4539
# original stream; there's no reason to assume that records
4540
# direct from the source will be suitable for the sink. (Think
4541
# e.g. 2a -> 1.9-rich-root).
4542
for info in self._get_inventory_stream(revs, missing=True):
4546
# Ask for full texts always so that we don't need more round trips
4547
# after this stream.
4548
# Some of the missing keys are genuinely ghosts, so filter absent
4549
# records. The Sink is responsible for doing another check to
4550
# ensure that ghosts don't introduce missing data for future
4552
stream = versionedfile.filter_absent(vf.get_record_stream(keys,
4553
self.to_format._fetch_order, True))
4554
yield substream_kind, stream
4556
def inventory_fetch_order(self):
4557
if self._rich_root_upgrade():
4558
return 'topological'
4560
return self.to_format._fetch_order
4562
def _rich_root_upgrade(self):
4563
return (not self.from_repository._format.rich_root_data and
4564
self.to_format.rich_root_data)
4566
def _get_inventory_stream(self, revision_ids, missing=False):
4567
from_format = self.from_repository._format
4568
if (from_format.supports_chks and self.to_format.supports_chks and
4569
from_format.network_name() == self.to_format.network_name()):
4570
raise AssertionError(
4571
"this case should be handled by GroupCHKStreamSource")
4572
elif 'forceinvdeltas' in debug.debug_flags:
4573
return self._get_convertable_inventory_stream(revision_ids,
4574
delta_versus_null=missing)
4575
elif from_format.network_name() == self.to_format.network_name():
4577
return self._get_simple_inventory_stream(revision_ids,
4579
elif (not from_format.supports_chks and not self.to_format.supports_chks
4580
and from_format._serializer == self.to_format._serializer):
4581
# Essentially the same format.
4582
return self._get_simple_inventory_stream(revision_ids,
4585
# Any time we switch serializations, we want to use an
4586
# inventory-delta based approach.
4587
return self._get_convertable_inventory_stream(revision_ids,
4588
delta_versus_null=missing)
4590
def _get_simple_inventory_stream(self, revision_ids, missing=False):
4591
# NB: This currently reopens the inventory weave in source;
4592
# using a single stream interface instead would avoid this.
4593
from_weave = self.from_repository.inventories
4595
delta_closure = True
4597
delta_closure = not self.delta_on_metadata()
4598
yield ('inventories', from_weave.get_record_stream(
4599
[(rev_id,) for rev_id in revision_ids],
4600
self.inventory_fetch_order(), delta_closure))
4602
def _get_convertable_inventory_stream(self, revision_ids,
4603
delta_versus_null=False):
4604
# The two formats are sufficiently different that there is no fast
4605
# path, so we need to send just inventorydeltas, which any
4606
# sufficiently modern client can insert into any repository.
4607
# The StreamSink code expects to be able to
4608
# convert on the target, so we need to put bytes-on-the-wire that can
4609
# be converted. That means inventory deltas (if the remote is <1.19,
4610
# RemoteStreamSink will fallback to VFS to insert the deltas).
4611
yield ('inventory-deltas',
4612
self._stream_invs_as_deltas(revision_ids,
4613
delta_versus_null=delta_versus_null))
4615
def _stream_invs_as_deltas(self, revision_ids, delta_versus_null=False):
4616
"""Return a stream of inventory-deltas for the given rev ids.
4618
:param revision_ids: The list of inventories to transmit
4619
:param delta_versus_null: Don't try to find a minimal delta for this
4620
entry, instead compute the delta versus the NULL_REVISION. This
4621
effectively streams a complete inventory. Used for stuff like
4622
filling in missing parents, etc.
4624
from_repo = self.from_repository
4625
revision_keys = [(rev_id,) for rev_id in revision_ids]
4626
parent_map = from_repo.inventories.get_parent_map(revision_keys)
4627
# XXX: possibly repos could implement a more efficient iter_inv_deltas
4629
inventories = self.from_repository.iter_inventories(
4630
revision_ids, 'topological')
4631
format = from_repo._format
4632
invs_sent_so_far = set([_mod_revision.NULL_REVISION])
4633
inventory_cache = lru_cache.LRUCache(50)
4634
null_inventory = from_repo.revision_tree(
4635
_mod_revision.NULL_REVISION).inventory
4636
# XXX: ideally the rich-root/tree-refs flags would be per-revision, not
4637
# per-repo (e.g. streaming a non-rich-root revision out of a rich-root
4638
# repo back into a non-rich-root repo ought to be allowed)
4639
serializer = inventory_delta.InventoryDeltaSerializer(
4640
versioned_root=format.rich_root_data,
4641
tree_references=format.supports_tree_reference)
4642
for inv in inventories:
4643
key = (inv.revision_id,)
4644
parent_keys = parent_map.get(key, ())
4646
if not delta_versus_null and parent_keys:
4647
# The caller did not ask for complete inventories and we have
4648
# some parents that we can delta against. Make a delta against
4649
# each parent so that we can find the smallest.
4650
parent_ids = [parent_key[0] for parent_key in parent_keys]
4651
for parent_id in parent_ids:
4652
if parent_id not in invs_sent_so_far:
4653
# We don't know that the remote side has this basis, so
4656
if parent_id == _mod_revision.NULL_REVISION:
4657
parent_inv = null_inventory
4659
parent_inv = inventory_cache.get(parent_id, None)
4660
if parent_inv is None:
4661
parent_inv = from_repo.get_inventory(parent_id)
4662
candidate_delta = inv._make_delta(parent_inv)
4663
if (delta is None or
4664
len(delta) > len(candidate_delta)):
4665
delta = candidate_delta
4666
basis_id = parent_id
4668
# Either none of the parents ended up being suitable, or we
4669
# were asked to delta against NULL
4670
basis_id = _mod_revision.NULL_REVISION
4671
delta = inv._make_delta(null_inventory)
4672
invs_sent_so_far.add(inv.revision_id)
4673
inventory_cache[inv.revision_id] = inv
4674
delta_serialized = ''.join(
4675
serializer.delta_to_lines(basis_id, key[-1], delta))
4676
yield versionedfile.FulltextContentFactory(
4677
key, parent_keys, None, delta_serialized)
4680
def _iter_for_revno(repo, partial_history_cache, stop_index=None,
4681
stop_revision=None):
4682
"""Extend the partial history to include a given index
4684
If a stop_index is supplied, stop when that index has been reached.
4685
If a stop_revision is supplied, stop when that revision is
4686
encountered. Otherwise, stop when the beginning of history is
4689
:param stop_index: The index which should be present. When it is
4690
present, history extension will stop.
4691
:param stop_revision: The revision id which should be present. When
4692
it is encountered, history extension will stop.
4694
start_revision = partial_history_cache[-1]
4695
iterator = repo.iter_reverse_revision_history(start_revision)
4697
#skip the last revision in the list
4700
if (stop_index is not None and
4701
len(partial_history_cache) > stop_index):
4703
if partial_history_cache[-1] == stop_revision:
4705
revision_id = iterator.next()
4706
partial_history_cache.append(revision_id)
4707
except StopIteration: