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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 cStringIO import StringIO
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from bzrlib.lazy_import import lazy_import
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lazy_import(globals(), """
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from itertools import chain
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from copy import deepcopy
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from unittest import TestSuite
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from warnings import warn
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from bzrlib import (
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config as _mod_config,
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revision as _mod_revision,
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from bzrlib.config import BranchConfig, TransportConfig
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from bzrlib.repofmt.pack_repo import RepositoryFormatKnitPack5RichRoot
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from bzrlib.tag import (
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from bzrlib.config import BranchConfig, TreeConfig
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from bzrlib.lockable_files import LockableFiles, TransportLock
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from bzrlib.decorators import needs_read_lock, needs_write_lock, only_raises
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from bzrlib.hooks import HookPoint, Hooks
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from bzrlib.inter import InterObject
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from bzrlib.lock import _RelockDebugMixin, LogicalLockResult
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from bzrlib import registry
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from bzrlib.symbol_versioning import (
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from bzrlib.trace import mutter, mutter_callsite, note, is_quiet
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from bzrlib.decorators import needs_read_lock, needs_write_lock
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from bzrlib.errors import (BzrError, BzrCheckError, DivergedBranches,
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HistoryMissing, InvalidRevisionId,
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InvalidRevisionNumber, LockError, NoSuchFile,
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NoSuchRevision, NoWorkingTree, NotVersionedError,
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NotBranchError, UninitializableFormat,
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UnlistableStore, UnlistableBranch,
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from bzrlib.symbol_versioning import (deprecated_function,
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zero_eight, zero_nine,
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from bzrlib.trace import mutter, note
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BZR_BRANCH_FORMAT_4 = "Bazaar-NG branch, format 0.0.4\n"
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BZR_BRANCH_FORMAT_5 = "Bazaar-NG branch, format 5\n"
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BZR_BRANCH_FORMAT_6 = "Bazaar Branch Format 6 (bzr 0.15)\n"
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class Branch(bzrdir.ControlComponent):
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BZR_BRANCH_FORMAT_6 = "Bazaar-NG branch, format 6\n"
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# TODO: Maybe include checks for common corruption of newlines, etc?
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# TODO: Some operations like log might retrieve the same revisions
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# repeatedly to calculate deltas. We could perhaps have a weakref
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# cache in memory to make this faster. In general anything can be
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# cached in memory between lock and unlock operations. .. nb thats
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# what the transaction identity map provides
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######################################################################
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"""Branch holding a history of revisions.
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Base directory/url of the branch; using control_url and
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control_transport is more standardized.
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Base directory/url of the branch.
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hooks: An instance of BranchHooks.
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if master is not None:
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master.break_lock()
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def _check_stackable_repo(self):
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if not self.repository._format.supports_external_lookups:
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raise errors.UnstackableRepositoryFormat(self.repository._format,
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self.repository.base)
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def _extend_partial_history(self, stop_index=None, stop_revision=None):
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"""Extend the partial history to include a given index
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If a stop_index is supplied, stop when that index has been reached.
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If a stop_revision is supplied, stop when that revision is
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encountered. Otherwise, stop when the beginning of history is
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:param stop_index: The index which should be present. When it is
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present, history extension will stop.
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:param stop_revision: The revision id which should be present. When
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it is encountered, history extension will stop.
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if len(self._partial_revision_history_cache) == 0:
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self._partial_revision_history_cache = [self.last_revision()]
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repository._iter_for_revno(
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self.repository, self._partial_revision_history_cache,
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stop_index=stop_index, stop_revision=stop_revision)
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if self._partial_revision_history_cache[-1] == _mod_revision.NULL_REVISION:
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self._partial_revision_history_cache.pop()
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def _get_check_refs(self):
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"""Get the references needed for check().
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revid = self.last_revision()
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return [('revision-existence', revid), ('lefthand-distance', revid)]
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def open(base, _unsupported=False, possible_transports=None):
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@deprecated_method(zero_eight)
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def open_downlevel(base):
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"""Open a branch which may be of an old format."""
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return Branch.open(base, _unsupported=True)
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def open(base, _unsupported=False):
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"""Open the branch rooted at base.
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For instance, if the branch is at URL/.bzr/branch,
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Branch.open(URL) -> a Branch instance.
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control = bzrdir.BzrDir.open(base, _unsupported,
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possible_transports=possible_transports)
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return control.open_branch(unsupported=_unsupported)
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def open_from_transport(transport, name=None, _unsupported=False):
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"""Open the branch rooted at transport"""
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control = bzrdir.BzrDir.open_from_transport(transport, _unsupported)
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return control.open_branch(name=name, unsupported=_unsupported)
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def open_containing(url, possible_transports=None):
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control = bzrdir.BzrDir.open(base, _unsupported)
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return control.open_branch(_unsupported)
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def open_containing(url):
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"""Open an existing branch which contains url.
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This probes for a branch at url, and searches upwards from there.
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Basically we keep looking up until we find the control directory or
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run into the root. If there isn't one, raises NotBranchError.
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If there is one and it is either an unrecognised format or an unsupported
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If there is one and it is either an unrecognised format or an unsupported
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format, UnknownFormatError or UnsupportedFormatError are raised.
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If there is one, it is returned, along with the unused portion of url.
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control, relpath = bzrdir.BzrDir.open_containing(url,
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control, relpath = bzrdir.BzrDir.open_containing(url)
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return control.open_branch(), relpath
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def _push_should_merge_tags(self):
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"""Should _basic_push merge this branch's tags into the target?
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The default implementation returns False if this branch has no tags,
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and True the rest of the time. Subclasses may override this.
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return self.supports_tags() and self.tags.get_tag_dict()
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@deprecated_function(zero_eight)
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def initialize(base):
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"""Create a new working tree and branch, rooted at 'base' (url)
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NOTE: This will soon be deprecated in favour of creation
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return bzrdir.BzrDir.create_standalone_workingtree(base).branch
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@deprecated_function(zero_eight)
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def setup_caching(self, cache_root):
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"""Subclasses that care about caching should override this, and set
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up cached stores located under cache_root.
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NOTE: This is unused.
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def get_config(self):
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return BranchConfig(self)
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def _get_config(self):
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"""Get the concrete config for just the config in this branch.
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This is not intended for client use; see Branch.get_config for the
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:return: An object supporting get_option and set_option.
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raise NotImplementedError(self._get_config)
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def _get_fallback_repository(self, url):
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"""Get the repository we fallback to at url."""
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url = urlutils.join(self.base, url)
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a_branch = Branch.open(url,
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possible_transports=[self.bzrdir.root_transport])
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return a_branch.repository
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def _get_tags_bytes(self):
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"""Get the bytes of a serialised tags dict.
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Note that not all branches support tags, nor do all use the same tags
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logic: this method is specific to BasicTags. Other tag implementations
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may use the same method name and behave differently, safely, because
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of the double-dispatch via
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format.make_tags->tags_instance->get_tags_dict.
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:return: The bytes of the tags file.
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:seealso: Branch._set_tags_bytes.
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return self._transport.get_bytes('tags')
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def _get_nick(self, local=False, possible_transports=None):
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config = self.get_config()
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# explicit overrides master, but don't look for master if local is True
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if not local and not config.has_explicit_nickname():
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master = self.get_master_branch(possible_transports)
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if master is not None:
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# return the master branch value
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except errors.BzrError, e:
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# Silently fall back to local implicit nick if the master is
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mutter("Could not connect to bound branch, "
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"falling back to local nick.\n " + str(e))
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return config.get_nickname()
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return self.get_config().get_nickname()
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def _set_nick(self, nick):
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self.get_config().set_user_option('nickname', nick, warn_masked=True)
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self.get_config().set_user_option('nickname', nick)
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nick = property(_get_nick, _set_nick)
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def is_locked(self):
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raise NotImplementedError(self.is_locked)
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def _lefthand_history(self, revision_id, last_rev=None,
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if 'evil' in debug.debug_flags:
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mutter_callsite(4, "_lefthand_history scales with history.")
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# stop_revision must be a descendant of last_revision
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graph = self.repository.get_graph()
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if last_rev is not None:
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if not graph.is_ancestor(last_rev, revision_id):
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# our previous tip is not merged into stop_revision
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raise errors.DivergedBranches(self, other_branch)
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# make a new revision history from the graph
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parents_map = graph.get_parent_map([revision_id])
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if revision_id not in parents_map:
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raise errors.NoSuchRevision(self, revision_id)
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current_rev_id = revision_id
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check_not_reserved_id = _mod_revision.check_not_reserved_id
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# Do not include ghosts or graph origin in revision_history
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while (current_rev_id in parents_map and
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len(parents_map[current_rev_id]) > 0):
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check_not_reserved_id(current_rev_id)
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new_history.append(current_rev_id)
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current_rev_id = parents_map[current_rev_id][0]
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parents_map = graph.get_parent_map([current_rev_id])
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new_history.reverse()
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def lock_write(self, token=None):
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"""Lock the branch for write operations.
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:param token: A token to permit reacquiring a previously held and
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:return: A BranchWriteLockResult.
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def lock_write(self):
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raise NotImplementedError(self.lock_write)
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def lock_read(self):
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"""Lock the branch for read operations.
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:return: A bzrlib.lock.LogicalLockResult.
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raise NotImplementedError(self.lock_read)
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def unlock(self):
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def get_physical_lock_status(self):
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raise NotImplementedError(self.get_physical_lock_status)
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def dotted_revno_to_revision_id(self, revno, _cache_reverse=False):
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"""Return the revision_id for a dotted revno.
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:param revno: a tuple like (1,) or (1,1,2)
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:param _cache_reverse: a private parameter enabling storage
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of the reverse mapping in a top level cache. (This should
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only be done in selective circumstances as we want to
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avoid having the mapping cached multiple times.)
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:return: the revision_id
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:raises errors.NoSuchRevision: if the revno doesn't exist
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rev_id = self._do_dotted_revno_to_revision_id(revno)
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self._partial_revision_id_to_revno_cache[rev_id] = revno
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def _do_dotted_revno_to_revision_id(self, revno):
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"""Worker function for dotted_revno_to_revision_id.
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Subclasses should override this if they wish to
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provide a more efficient implementation.
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return self.get_rev_id(revno[0])
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revision_id_to_revno = self.get_revision_id_to_revno_map()
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revision_ids = [revision_id for revision_id, this_revno
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in revision_id_to_revno.iteritems()
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if revno == this_revno]
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if len(revision_ids) == 1:
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return revision_ids[0]
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revno_str = '.'.join(map(str, revno))
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raise errors.NoSuchRevision(self, revno_str)
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def revision_id_to_dotted_revno(self, revision_id):
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"""Given a revision id, return its dotted revno.
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:return: a tuple like (1,) or (400,1,3).
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return self._do_revision_id_to_dotted_revno(revision_id)
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def _do_revision_id_to_dotted_revno(self, revision_id):
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"""Worker function for revision_id_to_revno."""
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# Try the caches if they are loaded
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result = self._partial_revision_id_to_revno_cache.get(revision_id)
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if result is not None:
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if self._revision_id_to_revno_cache:
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result = self._revision_id_to_revno_cache.get(revision_id)
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raise errors.NoSuchRevision(self, revision_id)
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# Try the mainline as it's optimised
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revno = self.revision_id_to_revno(revision_id)
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except errors.NoSuchRevision:
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# We need to load and use the full revno map after all
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result = self.get_revision_id_to_revno_map().get(revision_id)
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raise errors.NoSuchRevision(self, revision_id)
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def get_revision_id_to_revno_map(self):
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"""Return the revision_id => dotted revno map.
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This will be regenerated on demand, but will be cached.
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:return: A dictionary mapping revision_id => dotted revno.
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This dictionary should not be modified by the caller.
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if self._revision_id_to_revno_cache is not None:
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mapping = self._revision_id_to_revno_cache
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mapping = self._gen_revno_map()
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self._cache_revision_id_to_revno(mapping)
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# TODO: jam 20070417 Since this is being cached, should we be returning
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# I would rather not, and instead just declare that users should not
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# modify the return value.
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def _gen_revno_map(self):
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"""Create a new mapping from revision ids to dotted revnos.
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Dotted revnos are generated based on the current tip in the revision
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This is the worker function for get_revision_id_to_revno_map, which
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just caches the return value.
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:return: A dictionary mapping revision_id => dotted revno.
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revision_id_to_revno = dict((rev_id, revno)
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for rev_id, depth, revno, end_of_merge
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in self.iter_merge_sorted_revisions())
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return revision_id_to_revno
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def iter_merge_sorted_revisions(self, start_revision_id=None,
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stop_revision_id=None, stop_rule='exclude', direction='reverse'):
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"""Walk the revisions for a branch in merge sorted order.
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Merge sorted order is the output from a merge-aware,
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topological sort, i.e. all parents come before their
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children going forward; the opposite for reverse.
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:param start_revision_id: the revision_id to begin walking from.
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If None, the branch tip is used.
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:param stop_revision_id: the revision_id to terminate the walk
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after. If None, the rest of history is included.
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:param stop_rule: if stop_revision_id is not None, the precise rule
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to use for termination:
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* 'exclude' - leave the stop revision out of the result (default)
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* 'include' - the stop revision is the last item in the result
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* 'with-merges' - include the stop revision and all of its
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merged revisions in the result
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* 'with-merges-without-common-ancestry' - filter out revisions
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that are in both ancestries
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:param direction: either 'reverse' or 'forward':
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* reverse means return the start_revision_id first, i.e.
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start at the most recent revision and go backwards in history
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* forward returns tuples in the opposite order to reverse.
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Note in particular that forward does *not* do any intelligent
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ordering w.r.t. depth as some clients of this API may like.
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(If required, that ought to be done at higher layers.)
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:return: an iterator over (revision_id, depth, revno, end_of_merge)
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* revision_id: the unique id of the revision
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* depth: How many levels of merging deep this node has been
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* revno_sequence: This field provides a sequence of
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revision numbers for all revisions. The format is:
448
(REVNO, BRANCHNUM, BRANCHREVNO). BRANCHNUM is the number of the
449
branch that the revno is on. From left to right the REVNO numbers
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are the sequence numbers within that branch of the revision.
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* end_of_merge: When True the next node (earlier in history) is
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part of a different merge.
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# Note: depth and revno values are in the context of the branch so
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# we need the full graph to get stable numbers, regardless of the
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if self._merge_sorted_revisions_cache is None:
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last_revision = self.last_revision()
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known_graph = self.repository.get_known_graph_ancestry(
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self._merge_sorted_revisions_cache = known_graph.merge_sort(
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filtered = self._filter_merge_sorted_revisions(
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self._merge_sorted_revisions_cache, start_revision_id,
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stop_revision_id, stop_rule)
466
# Make sure we don't return revisions that are not part of the
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# start_revision_id ancestry.
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filtered = self._filter_start_non_ancestors(filtered)
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if direction == 'reverse':
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if direction == 'forward':
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return reversed(list(filtered))
474
raise ValueError('invalid direction %r' % direction)
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def _filter_merge_sorted_revisions(self, merge_sorted_revisions,
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start_revision_id, stop_revision_id, stop_rule):
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"""Iterate over an inclusive range of sorted revisions."""
479
rev_iter = iter(merge_sorted_revisions)
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if start_revision_id is not None:
481
for node in rev_iter:
482
rev_id = node.key[-1]
483
if rev_id != start_revision_id:
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# The decision to include the start or not
487
# depends on the stop_rule if a stop is provided
488
# so pop this node back into the iterator
489
rev_iter = chain(iter([node]), rev_iter)
491
if stop_revision_id is None:
493
for node in rev_iter:
494
rev_id = node.key[-1]
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yield (rev_id, node.merge_depth, node.revno,
497
elif stop_rule == 'exclude':
498
for node in rev_iter:
499
rev_id = node.key[-1]
500
if rev_id == stop_revision_id:
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yield (rev_id, node.merge_depth, node.revno,
504
elif stop_rule == 'include':
505
for node in rev_iter:
506
rev_id = node.key[-1]
507
yield (rev_id, node.merge_depth, node.revno,
509
if rev_id == stop_revision_id:
511
elif stop_rule == 'with-merges-without-common-ancestry':
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# We want to exclude all revisions that are already part of the
513
# stop_revision_id ancestry.
514
graph = self.repository.get_graph()
515
ancestors = graph.find_unique_ancestors(start_revision_id,
517
for node in rev_iter:
518
rev_id = node.key[-1]
519
if rev_id not in ancestors:
521
yield (rev_id, node.merge_depth, node.revno,
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elif stop_rule == 'with-merges':
524
stop_rev = self.repository.get_revision(stop_revision_id)
525
if stop_rev.parent_ids:
526
left_parent = stop_rev.parent_ids[0]
528
left_parent = _mod_revision.NULL_REVISION
529
# left_parent is the actual revision we want to stop logging at,
530
# since we want to show the merged revisions after the stop_rev too
531
reached_stop_revision_id = False
532
revision_id_whitelist = []
533
for node in rev_iter:
534
rev_id = node.key[-1]
535
if rev_id == left_parent:
536
# reached the left parent after the stop_revision
538
if (not reached_stop_revision_id or
539
rev_id in revision_id_whitelist):
540
yield (rev_id, node.merge_depth, node.revno,
542
if reached_stop_revision_id or rev_id == stop_revision_id:
543
# only do the merged revs of rev_id from now on
544
rev = self.repository.get_revision(rev_id)
546
reached_stop_revision_id = True
547
revision_id_whitelist.extend(rev.parent_ids)
549
raise ValueError('invalid stop_rule %r' % stop_rule)
551
def _filter_start_non_ancestors(self, rev_iter):
552
# If we started from a dotted revno, we want to consider it as a tip
553
# and don't want to yield revisions that are not part of its
554
# ancestry. Given the order guaranteed by the merge sort, we will see
555
# uninteresting descendants of the first parent of our tip before the
557
first = rev_iter.next()
558
(rev_id, merge_depth, revno, end_of_merge) = first
561
# We start at a mainline revision so by definition, all others
562
# revisions in rev_iter are ancestors
563
for node in rev_iter:
568
pmap = self.repository.get_parent_map([rev_id])
569
parents = pmap.get(rev_id, [])
571
whitelist.update(parents)
573
# If there is no parents, there is nothing of interest left
575
# FIXME: It's hard to test this scenario here as this code is never
576
# called in that case. -- vila 20100322
579
for (rev_id, merge_depth, revno, end_of_merge) in rev_iter:
581
if rev_id in whitelist:
582
pmap = self.repository.get_parent_map([rev_id])
583
parents = pmap.get(rev_id, [])
584
whitelist.remove(rev_id)
585
whitelist.update(parents)
587
# We've reached the mainline, there is nothing left to
591
# A revision that is not part of the ancestry of our
594
yield (rev_id, merge_depth, revno, end_of_merge)
596
def leave_lock_in_place(self):
597
"""Tell this branch object not to release the physical lock when this
600
If lock_write doesn't return a token, then this method is not supported.
602
self.control_files.leave_in_place()
604
def dont_leave_lock_in_place(self):
605
"""Tell this branch object to release the physical lock when this
606
object is unlocked, even if it didn't originally acquire it.
608
If lock_write doesn't return a token, then this method is not supported.
610
self.control_files.dont_leave_in_place()
188
def abspath(self, name):
189
"""Return absolute filename for something in the branch
191
XXX: Robert Collins 20051017 what is this used for? why is it a branch
192
method and not a tree method.
194
raise NotImplementedError(self.abspath)
612
196
def bind(self, other):
613
197
"""Bind the local branch the other branch.
708
282
The delta is relative to its mainline predecessor, or the
709
283
empty tree for revision 1.
285
assert isinstance(revno, int)
711
286
rh = self.revision_history()
712
287
if not (1 <= revno <= len(rh)):
713
raise errors.InvalidRevisionNumber(revno)
288
raise InvalidRevisionNumber(revno)
714
289
return self.repository.get_revision_delta(rh[revno-1])
716
def get_stacked_on_url(self):
717
"""Get the URL this branch is stacked against.
719
:raises NotStacked: If the branch is not stacked.
720
:raises UnstackableBranchFormat: If the branch does not support
723
raise NotImplementedError(self.get_stacked_on_url)
291
def get_root_id(self):
292
"""Return the id of this branches root"""
293
raise NotImplementedError(self.get_root_id)
725
295
def print_file(self, file, revision_id):
726
296
"""Print `file` to stdout."""
727
297
raise NotImplementedError(self.print_file)
299
def append_revision(self, *revision_ids):
300
raise NotImplementedError(self.append_revision)
729
302
def set_revision_history(self, rev_history):
730
303
raise NotImplementedError(self.set_revision_history)
733
def set_parent(self, url):
734
"""See Branch.set_parent."""
735
# TODO: Maybe delete old location files?
736
# URLs should never be unicode, even on the local fs,
737
# FIXUP this and get_parent in a future branch format bump:
738
# read and rewrite the file. RBC 20060125
740
if isinstance(url, unicode):
742
url = url.encode('ascii')
743
except UnicodeEncodeError:
744
raise errors.InvalidURL(url,
745
"Urls must be 7-bit ascii, "
746
"use bzrlib.urlutils.escape")
747
url = urlutils.relative_url(self.base, url)
748
self._set_parent_location(url)
751
def set_stacked_on_url(self, url):
752
"""Set the URL this branch is stacked against.
754
:raises UnstackableBranchFormat: If the branch does not support
756
:raises UnstackableRepositoryFormat: If the repository does not support
759
if not self._format.supports_stacking():
760
raise errors.UnstackableBranchFormat(self._format, self.user_url)
761
# XXX: Changing from one fallback repository to another does not check
762
# that all the data you need is present in the new fallback.
763
# Possibly it should.
764
self._check_stackable_repo()
767
old_url = self.get_stacked_on_url()
768
except (errors.NotStacked, errors.UnstackableBranchFormat,
769
errors.UnstackableRepositoryFormat):
773
self._activate_fallback_location(url)
774
# write this out after the repository is stacked to avoid setting a
775
# stacked config that doesn't work.
776
self._set_config_location('stacked_on_location', url)
779
"""Change a branch to be unstacked, copying data as needed.
781
Don't call this directly, use set_stacked_on_url(None).
783
pb = ui.ui_factory.nested_progress_bar()
785
pb.update("Unstacking")
786
# The basic approach here is to fetch the tip of the branch,
787
# including all available ghosts, from the existing stacked
788
# repository into a new repository object without the fallbacks.
790
# XXX: See <https://launchpad.net/bugs/397286> - this may not be
791
# correct for CHKMap repostiories
792
old_repository = self.repository
793
if len(old_repository._fallback_repositories) != 1:
794
raise AssertionError("can't cope with fallback repositories "
795
"of %r" % (self.repository,))
796
# unlock it, including unlocking the fallback
797
old_repository.unlock()
798
old_repository.lock_read()
800
# Repositories don't offer an interface to remove fallback
801
# repositories today; take the conceptually simpler option and just
802
# reopen it. We reopen it starting from the URL so that we
803
# get a separate connection for RemoteRepositories and can
804
# stream from one of them to the other. This does mean doing
805
# separate SSH connection setup, but unstacking is not a
806
# common operation so it's tolerable.
807
new_bzrdir = bzrdir.BzrDir.open(self.bzrdir.root_transport.base)
808
new_repository = new_bzrdir.find_repository()
809
self.repository = new_repository
810
if self.repository._fallback_repositories:
811
raise AssertionError("didn't expect %r to have "
812
"fallback_repositories"
813
% (self.repository,))
814
# this is not paired with an unlock because it's just restoring
815
# the previous state; the lock's released when set_stacked_on_url
817
self.repository.lock_write()
818
# XXX: If you unstack a branch while it has a working tree
819
# with a pending merge, the pending-merged revisions will no
820
# longer be present. You can (probably) revert and remerge.
822
# XXX: This only fetches up to the tip of the repository; it
823
# doesn't bring across any tags. That's fairly consistent
824
# with how branch works, but perhaps not ideal.
825
self.repository.fetch(old_repository,
826
revision_id=self.last_revision(),
829
old_repository.unlock()
833
def _set_tags_bytes(self, bytes):
834
"""Mirror method for _get_tags_bytes.
836
:seealso: Branch._get_tags_bytes.
838
return _run_with_write_locked_target(self, self._transport.put_bytes,
841
def _cache_revision_history(self, rev_history):
842
"""Set the cached revision history to rev_history.
844
The revision_history method will use this cache to avoid regenerating
845
the revision history.
847
This API is semi-public; it only for use by subclasses, all other code
848
should consider it to be private.
850
self._revision_history_cache = rev_history
852
def _cache_revision_id_to_revno(self, revision_id_to_revno):
853
"""Set the cached revision_id => revno map to revision_id_to_revno.
855
This API is semi-public; it only for use by subclasses, all other code
856
should consider it to be private.
858
self._revision_id_to_revno_cache = revision_id_to_revno
860
def _clear_cached_state(self):
861
"""Clear any cached data on this branch, e.g. cached revision history.
863
This means the next call to revision_history will need to call
864
_gen_revision_history.
866
This API is semi-public; it only for use by subclasses, all other code
867
should consider it to be private.
869
self._revision_history_cache = None
870
self._revision_id_to_revno_cache = None
871
self._last_revision_info_cache = None
872
self._merge_sorted_revisions_cache = None
873
self._partial_revision_history_cache = []
874
self._partial_revision_id_to_revno_cache = {}
876
def _gen_revision_history(self):
877
"""Return sequence of revision hashes on to this branch.
879
Unlike revision_history, this method always regenerates or rereads the
880
revision history, i.e. it does not cache the result, so repeated calls
883
Concrete subclasses should override this instead of revision_history so
884
that subclasses do not need to deal with caching logic.
886
This API is semi-public; it only for use by subclasses, all other code
887
should consider it to be private.
889
raise NotImplementedError(self._gen_revision_history)
892
305
def revision_history(self):
893
"""Return sequence of revision ids on this branch.
895
This method will cache the revision history for as long as it is safe to
898
if 'evil' in debug.debug_flags:
899
mutter_callsite(3, "revision_history scales with history.")
900
if self._revision_history_cache is not None:
901
history = self._revision_history_cache
903
history = self._gen_revision_history()
904
self._cache_revision_history(history)
306
"""Return sequence of revision hashes on to this branch."""
307
raise NotImplementedError(self.revision_history)
908
310
"""Return current revision number for this branch.
952
355
common_index = min(self_len, other_len) -1
953
356
if common_index >= 0 and \
954
357
self_history[common_index] != other_history[common_index]:
955
raise errors.DivergedBranches(self, other)
358
raise DivergedBranches(self, other)
957
360
if stop_revision is None:
958
361
stop_revision = other_len
363
assert isinstance(stop_revision, int)
960
364
if stop_revision > other_len:
961
365
raise errors.NoSuchRevision(self, stop_revision)
962
366
return other_history[self_len:stop_revision]
965
def update_revisions(self, other, stop_revision=None, overwrite=False,
368
def update_revisions(self, other, stop_revision=None):
967
369
"""Pull in new perfect-fit revisions.
969
371
:param other: Another Branch to pull from
970
372
:param stop_revision: Updated until the given revision
971
:param overwrite: Always set the branch pointer, rather than checking
972
to see if it is a proper descendant.
973
:param graph: A Graph object that can be used to query history
974
information. This can be None.
977
return InterBranch.get(other, self).update_revisions(stop_revision,
980
def import_last_revision_info(self, source_repo, revno, revid):
981
"""Set the last revision info, importing from another repo if necessary.
983
This is used by the bound branch code to upload a revision to
984
the master branch first before updating the tip of the local branch.
986
:param source_repo: Source repository to optionally fetch from
987
:param revno: Revision number of the new tip
988
:param revid: Revision id of the new tip
990
if not self.repository.has_same_location(source_repo):
991
self.repository.fetch(source_repo, revision_id=revid)
992
self.set_last_revision_info(revno, revid)
375
raise NotImplementedError(self.update_revisions)
994
377
def revision_id_to_revno(self, revision_id):
995
378
"""Given a revision id, return its revno"""
996
if _mod_revision.is_null(revision_id):
379
if revision_id is None:
381
revision_id = osutils.safe_revision_id(revision_id)
998
382
history = self.revision_history()
1000
384
return history.index(revision_id) + 1
1001
385
except ValueError:
1002
raise errors.NoSuchRevision(self, revision_id)
386
raise bzrlib.errors.NoSuchRevision(self, revision_id)
1005
388
def get_rev_id(self, revno, history=None):
1006
389
"""Find the revision id of the specified revno."""
1008
return _mod_revision.NULL_REVISION
1009
last_revno, last_revid = self.last_revision_info()
1010
if revno == last_revno:
1012
if revno <= 0 or revno > last_revno:
1013
raise errors.NoSuchRevision(self, revno)
1014
distance_from_last = last_revno - revno
1015
if len(self._partial_revision_history_cache) <= distance_from_last:
1016
self._extend_partial_history(distance_from_last)
1017
return self._partial_revision_history_cache[distance_from_last]
393
history = self.revision_history()
394
if revno <= 0 or revno > len(history):
395
raise bzrlib.errors.NoSuchRevision(self, revno)
396
return history[revno - 1]
1020
def pull(self, source, overwrite=False, stop_revision=None,
1021
possible_transports=None, *args, **kwargs):
398
def pull(self, source, overwrite=False, stop_revision=None):
1022
399
"""Mirror source into this branch.
1024
401
This branch is considered to be 'local', having low latency.
1026
:returns: PullResult instance
1028
return InterBranch.get(source, self).pull(overwrite=overwrite,
1029
stop_revision=stop_revision,
1030
possible_transports=possible_transports, *args, **kwargs)
403
raise NotImplementedError(self.pull)
1032
def push(self, target, overwrite=False, stop_revision=None, *args,
405
def push(self, target, overwrite=False, stop_revision=None):
1034
406
"""Mirror this branch into target.
1036
408
This branch is considered to be 'local', having low latency.
1038
return InterBranch.get(self, target).push(overwrite, stop_revision,
1041
def lossy_push(self, target, stop_revision=None):
1042
"""Push deltas into another branch.
1044
:note: This does not, like push, retain the revision ids from
1045
the source branch and will, rather than adding bzr-specific
1046
metadata, push only those semantics of the revision that can be
1047
natively represented by this branch' VCS.
1049
:param target: Target branch
1050
:param stop_revision: Revision to push, defaults to last revision.
1051
:return: BranchPushResult with an extra member revidmap:
1052
A dictionary mapping revision ids from the target branch
1053
to new revision ids in the target branch, for each
1054
revision that was pushed.
1056
inter = InterBranch.get(self, target)
1057
lossy_push = getattr(inter, "lossy_push", None)
1058
if lossy_push is None:
1059
raise errors.LossyPushToSameVCS(self, target)
1060
return lossy_push(stop_revision)
410
raise NotImplementedError(self.push)
1062
412
def basis_tree(self):
1063
413
"""Return `Tree` object for last revision."""
1064
414
return self.repository.revision_tree(self.last_revision())
416
def rename_one(self, from_rel, to_rel):
419
This can change the directory or the filename or both.
421
raise NotImplementedError(self.rename_one)
423
def move(self, from_paths, to_name):
426
to_name must exist as a versioned directory.
428
If to_name exists and is a directory, the files are moved into
429
it, keeping their old names. If it is a directory,
431
Note that to_name is only the last component of the new name;
432
this doesn't change the directory.
434
This returns a list of (from_path, to_path) pairs for each
437
raise NotImplementedError(self.move)
1066
439
def get_parent(self):
1067
440
"""Return the parent location of the branch.
1069
This is the default location for pull/missing. The usual
442
This is the default location for push/pull/missing. The usual
1070
443
pattern is that the user can override it by specifying a
1073
parent = self._get_parent_location()
1076
# This is an old-format absolute path to a local branch
1077
# turn it into a url
1078
if parent.startswith('/'):
1079
parent = urlutils.local_path_to_url(parent.decode('utf8'))
1081
return urlutils.join(self.base[:-1], parent)
1082
except errors.InvalidURLJoin, e:
1083
raise errors.InaccessibleParent(parent, self.user_url)
1085
def _get_parent_location(self):
1086
raise NotImplementedError(self._get_parent_location)
1088
def _set_config_location(self, name, url, config=None,
1089
make_relative=False):
1091
config = self.get_config()
1095
url = urlutils.relative_url(self.base, url)
1096
config.set_user_option(name, url, warn_masked=True)
1098
def _get_config_location(self, name, config=None):
1100
config = self.get_config()
1101
location = config.get_user_option(name)
1106
def get_child_submit_format(self):
1107
"""Return the preferred format of submissions to this branch."""
1108
return self.get_config().get_user_option("child_submit_format")
446
raise NotImplementedError(self.get_parent)
1110
448
def get_submit_branch(self):
1111
449
"""Return the submit location of the branch.
1190
491
self.check_real_revno(revno)
1192
493
def check_real_revno(self, revno):
1194
495
Check whether a revno corresponds to a real revision.
1195
496
Zero (the NULL revision) is considered invalid
1197
498
if revno < 1 or revno > self.revno():
1198
raise errors.InvalidRevisionNumber(revno)
499
raise InvalidRevisionNumber(revno)
1200
501
@needs_read_lock
1201
def clone(self, to_bzrdir, revision_id=None, repository_policy=None):
502
def clone(self, *args, **kwargs):
1202
503
"""Clone this branch into to_bzrdir preserving all semantic values.
1204
Most API users will want 'create_clone_on_transport', which creates a
1205
new bzrdir and branch on the fly.
1207
505
revision_id: if not None, the revision history in the new branch will
1208
506
be truncated to end with revision_id.
1210
result = to_bzrdir.create_branch()
1213
if repository_policy is not None:
1214
repository_policy.configure_branch(result)
1215
self.copy_content_into(result, revision_id=revision_id)
508
# for API compatibility, until 0.8 releases we provide the old api:
509
# def clone(self, to_location, revision=None, basis_branch=None, to_branch_format=None):
510
# after 0.8 releases, the *args and **kwargs should be changed:
511
# def clone(self, to_bzrdir, revision_id=None):
512
if (kwargs.get('to_location', None) or
513
kwargs.get('revision', None) or
514
kwargs.get('basis_branch', None) or
515
(len(args) and isinstance(args[0], basestring))):
516
# backwards compatibility api:
517
warn("Branch.clone() has been deprecated for BzrDir.clone() from"
518
" bzrlib 0.8.", DeprecationWarning, stacklevel=3)
521
basis_branch = args[2]
523
basis_branch = kwargs.get('basis_branch', None)
525
basis = basis_branch.bzrdir
530
revision_id = args[1]
532
revision_id = kwargs.get('revision', None)
537
# no default to raise if not provided.
538
url = kwargs.get('to_location')
539
return self.bzrdir.clone(url,
540
revision_id=revision_id,
541
basis=basis).open_branch()
543
# generate args by hand
545
revision_id = args[1]
547
revision_id = kwargs.get('revision_id', None)
551
# no default to raise if not provided.
552
to_bzrdir = kwargs.get('to_bzrdir')
553
result = self._format.initialize(to_bzrdir)
554
self.copy_content_into(result, revision_id=revision_id)
1220
557
@needs_read_lock
1221
def sprout(self, to_bzrdir, revision_id=None, repository_policy=None):
558
def sprout(self, to_bzrdir, revision_id=None):
1222
559
"""Create a new line of development from the branch, into to_bzrdir.
1224
to_bzrdir controls the branch format.
1226
561
revision_id: if not None, the revision history in the new branch will
1227
562
be truncated to end with revision_id.
1229
if (repository_policy is not None and
1230
repository_policy.requires_stacking()):
1231
to_bzrdir._format.require_stacking(_skip_repo=True)
1232
result = to_bzrdir.create_branch()
1235
if repository_policy is not None:
1236
repository_policy.configure_branch(result)
1237
self.copy_content_into(result, revision_id=revision_id)
1238
result.set_parent(self.bzrdir.root_transport.base)
564
result = self._format.initialize(to_bzrdir)
565
self.copy_content_into(result, revision_id=revision_id)
566
result.set_parent(self.bzrdir.root_transport.base)
1243
569
def _synchronize_history(self, destination, revision_id):
1244
570
"""Synchronize last revision and revision history between branches.
1246
572
This version is most efficient when the destination is also a
1247
BzrBranch6, but works for BzrBranch5, as long as the destination's
1248
repository contains all the lefthand ancestors of the intended
1249
last_revision. If not, set_last_revision_info will fail.
573
BzrBranch5, but works for BzrBranch6 as long as the revision
574
history is the true lefthand parent history, and all of the revisions
575
are in the destination's repository. If not, set_revision_history
1251
578
:param destination: The branch to copy the history into
1252
579
:param revision_id: The revision-id to truncate history at. May
1253
580
be None to copy complete history.
1255
source_revno, source_revision_id = self.last_revision_info()
1256
if revision_id is None:
1257
revno, revision_id = source_revno, source_revision_id
1259
graph = self.repository.get_graph()
582
new_history = self.revision_history()
583
if revision_id is not None:
584
revision_id = osutils.safe_revision_id(revision_id)
1261
revno = graph.find_distance_to_null(revision_id,
1262
[(source_revision_id, source_revno)])
1263
except errors.GhostRevisionsHaveNoRevno:
1264
# Default to 1, if we can't find anything else
1266
destination.set_last_revision_info(revno, revision_id)
586
new_history = new_history[:new_history.index(revision_id) + 1]
588
rev = self.repository.get_revision(revision_id)
589
new_history = rev.get_history(self.repository)[1:]
590
destination.set_revision_history(new_history)
1268
592
@needs_read_lock
1269
593
def copy_content_into(self, destination, revision_id=None):
1283
606
destination.set_parent(parent)
1284
if self._push_should_merge_tags():
1285
self.tags.merge_to(destination.tags)
1287
def update_references(self, target):
1288
if not getattr(self._format, 'supports_reference_locations', False):
1290
reference_dict = self._get_all_reference_info()
1291
if len(reference_dict) == 0:
1293
old_base = self.base
1294
new_base = target.base
1295
target_reference_dict = target._get_all_reference_info()
1296
for file_id, (tree_path, branch_location) in (
1297
reference_dict.items()):
1298
branch_location = urlutils.rebase_url(branch_location,
1300
target_reference_dict.setdefault(
1301
file_id, (tree_path, branch_location))
1302
target._set_all_reference_info(target_reference_dict)
1304
608
@needs_read_lock
1305
def check(self, refs):
1306
610
"""Check consistency of the branch.
1308
612
In particular this checks that revisions given in the revision-history
1309
do actually match up in the revision graph, and that they're all
613
do actually match up in the revision graph, and that they're all
1310
614
present in the repository.
1312
616
Callers will typically also want to check the repository.
1314
:param refs: Calculated refs for this branch as specified by
1315
branch._get_check_refs()
1316
618
:return: A BranchCheckResult.
1318
result = BranchCheckResult(self)
1319
last_revno, last_revision_id = self.last_revision_info()
1320
actual_revno = refs[('lefthand-distance', last_revision_id)]
1321
if actual_revno != last_revno:
1322
result.errors.append(errors.BzrCheckError(
1323
'revno does not match len(mainline) %s != %s' % (
1324
last_revno, actual_revno)))
1325
# TODO: We should probably also check that self.revision_history
1326
# matches the repository for older branch formats.
1327
# If looking for the code that cross-checks repository parents against
1328
# the iter_reverse_revision_history output, that is now a repository
620
mainline_parent_id = None
621
for revision_id in self.revision_history():
623
revision = self.repository.get_revision(revision_id)
624
except errors.NoSuchRevision, e:
625
raise errors.BzrCheckError("mainline revision {%s} not in repository"
627
# In general the first entry on the revision history has no parents.
628
# But it's not illegal for it to have parents listed; this can happen
629
# in imports from Arch when the parents weren't reachable.
630
if mainline_parent_id is not None:
631
if mainline_parent_id not in revision.parent_ids:
632
raise errors.BzrCheckError("previous revision {%s} not listed among "
634
% (mainline_parent_id, revision_id))
635
mainline_parent_id = revision_id
636
return BranchCheckResult(self)
1332
638
def _get_checkout_format(self):
1333
639
"""Return the most suitable metadir for a checkout of this branch.
1334
Weaves are used if this branch's repository uses weaves.
640
Weaves are used if this branch's repostory uses weaves.
1336
642
if isinstance(self.bzrdir, bzrdir.BzrDirPreSplitOut):
1337
643
from bzrlib.repofmt import weaverepo
1338
644
format = bzrdir.BzrDirMetaFormat1()
1339
645
format.repository_format = weaverepo.RepositoryFormat7()
1341
format = self.repository.bzrdir.checkout_metadir()
1342
format.set_branch_format(self._format)
647
format = self.repository.bzrdir.cloning_metadir()
648
format.branch_format = self._format
1345
def create_clone_on_transport(self, to_transport, revision_id=None,
1346
stacked_on=None, create_prefix=False, use_existing_dir=False):
1347
"""Create a clone of this branch and its bzrdir.
1349
:param to_transport: The transport to clone onto.
1350
:param revision_id: The revision id to use as tip in the new branch.
1351
If None the tip is obtained from this branch.
1352
:param stacked_on: An optional URL to stack the clone on.
1353
:param create_prefix: Create any missing directories leading up to
1355
:param use_existing_dir: Use an existing directory if one exists.
1357
# XXX: Fix the bzrdir API to allow getting the branch back from the
1358
# clone call. Or something. 20090224 RBC/spiv.
1359
# XXX: Should this perhaps clone colocated branches as well,
1360
# rather than just the default branch? 20100319 JRV
1361
if revision_id is None:
1362
revision_id = self.last_revision()
1363
dir_to = self.bzrdir.clone_on_transport(to_transport,
1364
revision_id=revision_id, stacked_on=stacked_on,
1365
create_prefix=create_prefix, use_existing_dir=use_existing_dir)
1366
return dir_to.open_branch()
1368
651
def create_checkout(self, to_location, revision_id=None,
1369
lightweight=False, accelerator_tree=None,
1371
653
"""Create a checkout of a branch.
1373
655
:param to_location: The url to produce the checkout at
1374
656
:param revision_id: The revision to check out
1375
657
:param lightweight: If True, produce a lightweight checkout, otherwise,
1376
658
produce a bound branch (heavyweight checkout)
1377
:param accelerator_tree: A tree which can be used for retrieving file
1378
contents more quickly than the revision tree, i.e. a workingtree.
1379
The revision tree will be used for cases where accelerator_tree's
1380
content is different.
1381
:param hardlink: If true, hard-link files from accelerator_tree,
1383
659
:return: The tree of the created checkout
1385
661
t = transport.get_transport(to_location)
664
except errors.FileExists:
1388
format = self._get_checkout_format()
1389
checkout = format.initialize_on_transport(t)
1390
from_branch = BranchReferenceFormat().initialize(checkout,
667
checkout = bzrdir.BzrDirMetaFormat1().initialize_on_transport(t)
668
BranchReferenceFormat().initialize(checkout, self)
1393
670
format = self._get_checkout_format()
1394
671
checkout_branch = bzrdir.BzrDir.create_branch_convenience(
1395
672
to_location, force_new_tree=False, format=format)
1396
673
checkout = checkout_branch.bzrdir
1397
674
checkout_branch.bind(self)
1398
# pull up to the specified revision_id to set the initial
675
# pull up to the specified revision_id to set the initial
1399
676
# branch tip correctly, and seed it with history.
1400
677
checkout_branch.pull(self, stop_revision=revision_id)
1402
tree = checkout.create_workingtree(revision_id,
1403
from_branch=from_branch,
1404
accelerator_tree=accelerator_tree,
1406
basis_tree = tree.basis_tree()
1407
basis_tree.lock_read()
1409
for path, file_id in basis_tree.iter_references():
1410
reference_parent = self.reference_parent(file_id, path)
1411
reference_parent.create_checkout(tree.abspath(path),
1412
basis_tree.get_reference_revision(file_id, path),
1419
def reconcile(self, thorough=True):
1420
"""Make sure the data stored in this branch is consistent."""
1421
from bzrlib.reconcile import BranchReconciler
1422
reconciler = BranchReconciler(self, thorough=thorough)
1423
reconciler.reconcile()
1426
def reference_parent(self, file_id, path, possible_transports=None):
1427
"""Return the parent branch for a tree-reference file_id
1428
:param file_id: The file_id of the tree reference
1429
:param path: The path of the file_id in the tree
1430
:return: A branch associated with the file_id
1432
# FIXME should provide multiple branches, based on config
1433
return Branch.open(self.bzrdir.root_transport.clone(path).base,
1434
possible_transports=possible_transports)
1436
def supports_tags(self):
1437
return self._format.supports_tags()
1439
def automatic_tag_name(self, revision_id):
1440
"""Try to automatically find the tag name for a revision.
1442
:param revision_id: Revision id of the revision.
1443
:return: A tag name or None if no tag name could be determined.
1445
for hook in Branch.hooks['automatic_tag_name']:
1446
ret = hook(self, revision_id)
1451
def _check_if_descendant_or_diverged(self, revision_a, revision_b, graph,
1453
"""Ensure that revision_b is a descendant of revision_a.
1455
This is a helper function for update_revisions.
1457
:raises: DivergedBranches if revision_b has diverged from revision_a.
1458
:returns: True if revision_b is a descendant of revision_a.
1460
relation = self._revision_relations(revision_a, revision_b, graph)
1461
if relation == 'b_descends_from_a':
1463
elif relation == 'diverged':
1464
raise errors.DivergedBranches(self, other_branch)
1465
elif relation == 'a_descends_from_b':
1468
raise AssertionError("invalid relation: %r" % (relation,))
1470
def _revision_relations(self, revision_a, revision_b, graph):
1471
"""Determine the relationship between two revisions.
1473
:returns: One of: 'a_descends_from_b', 'b_descends_from_a', 'diverged'
1475
heads = graph.heads([revision_a, revision_b])
1476
if heads == set([revision_b]):
1477
return 'b_descends_from_a'
1478
elif heads == set([revision_a, revision_b]):
1479
# These branches have diverged
1481
elif heads == set([revision_a]):
1482
return 'a_descends_from_b'
1484
raise AssertionError("invalid heads: %r" % (heads,))
678
return checkout.create_workingtree(revision_id)
1487
681
class BranchFormat(object):
1599
749
control_files = lockable_files.LockableFiles(branch_transport,
1600
750
lock_name, lock_class)
1601
751
control_files.create_lock()
1603
control_files.lock_write()
1604
except errors.LockContention:
1605
if lock_type != 'branch4':
752
control_files.lock_write()
1611
utf8_files += [('format', self.get_format_string())]
754
control_files.put_utf8('format', self.get_format_string())
1613
for (filename, content) in utf8_files:
1614
branch_transport.put_bytes(
1616
mode=a_bzrdir._get_file_mode())
756
for file, content in utf8_files:
757
control_files.put_utf8(file, content)
1619
control_files.unlock()
1620
branch = self.open(a_bzrdir, name, _found=True)
1621
self._run_post_branch_init_hooks(a_bzrdir, name, branch)
759
control_files.unlock()
760
return self.open(a_bzrdir, _found=True)
1624
def initialize(self, a_bzrdir, name=None):
1625
"""Create a branch of this format in a_bzrdir.
1627
:param name: Name of the colocated branch to create.
762
def initialize(self, a_bzrdir):
763
"""Create a branch of this format in a_bzrdir."""
1629
764
raise NotImplementedError(self.initialize)
1631
766
def is_supported(self):
1632
767
"""Is this format supported?
1634
769
Supported formats can be initialized and opened.
1635
Unsupported formats may not support initialization or committing or
770
Unsupported formats may not support initialization or committing or
1636
771
some other features depending on the reason for not being supported.
1640
def make_tags(self, branch):
1641
"""Create a tags object for branch.
1643
This method is on BranchFormat, because BranchFormats are reflected
1644
over the wire via network_name(), whereas full Branch instances require
1645
multiple VFS method calls to operate at all.
1647
The default implementation returns a disabled-tags instance.
1649
Note that it is normal for branch to be a RemoteBranch when using tags
1652
return DisabledTags(branch)
1654
def network_name(self):
1655
"""A simple byte string uniquely identifying this format for RPC calls.
1657
MetaDir branch formats use their disk format string to identify the
1658
repository over the wire. All in one formats such as bzr < 0.8, and
1659
foreign formats like svn/git and hg should use some marker which is
1660
unique and immutable.
1662
raise NotImplementedError(self.network_name)
1664
def open(self, a_bzrdir, name=None, _found=False, ignore_fallbacks=False):
775
def open(self, a_bzrdir, _found=False):
1665
776
"""Return the branch object for a_bzrdir
1667
:param a_bzrdir: A BzrDir that contains a branch.
1668
:param name: Name of colocated branch to open
1669
:param _found: a private parameter, do not use it. It is used to
1670
indicate if format probing has already be done.
1671
:param ignore_fallbacks: when set, no fallback branches will be opened
1672
(if there are any). Default is to open fallbacks.
778
_found is a private parameter, do not use it. It is used to indicate
779
if format probing has already be done.
1674
781
raise NotImplementedError(self.open)
1677
784
def register_format(klass, format):
1678
"""Register a metadir format."""
1679
785
klass._formats[format.get_format_string()] = format
1680
# Metadir formats have a network name of their format string, and get
1681
# registered as class factories.
1682
network_format_registry.register(format.get_format_string(), format.__class__)
1685
788
def set_default_format(klass, format):
1686
789
klass._default_format = format
1688
def supports_set_append_revisions_only(self):
1689
"""True if this format supports set_append_revisions_only."""
1692
def supports_stacking(self):
1693
"""True if this format records a stacked-on branch."""
1697
792
def unregister_format(klass, format):
793
assert klass._formats[format.get_format_string()] is format
1698
794
del klass._formats[format.get_format_string()]
1700
796
def __str__(self):
1701
return self.get_format_description().rstrip()
1703
def supports_tags(self):
1704
"""True if this format supports tags stored in the branch"""
1705
return False # by default
1708
class BranchHooks(Hooks):
797
return self.get_format_string().rstrip()
800
class BranchHooks(dict):
1709
801
"""A dictionary mapping hook name to a list of callables for branch hooks.
1711
803
e.g. ['set_rh'] Is the list of items to be called when the
1712
804
set_revision_history function is invoked.
1718
810
These are all empty initially, because by default nothing should get
1721
Hooks.__init__(self)
1722
self.create_hook(HookPoint('set_rh',
1723
"Invoked whenever the revision history has been set via "
1724
"set_revision_history. The api signature is (branch, "
1725
"revision_history), and the branch will be write-locked. "
1726
"The set_rh hook can be expensive for bzr to trigger, a better "
1727
"hook to use is Branch.post_change_branch_tip.", (0, 15), None))
1728
self.create_hook(HookPoint('open',
1729
"Called with the Branch object that has been opened after a "
1730
"branch is opened.", (1, 8), None))
1731
self.create_hook(HookPoint('post_push',
1732
"Called after a push operation completes. post_push is called "
1733
"with a bzrlib.branch.BranchPushResult object and only runs in the "
1734
"bzr client.", (0, 15), None))
1735
self.create_hook(HookPoint('post_pull',
1736
"Called after a pull operation completes. post_pull is called "
1737
"with a bzrlib.branch.PullResult object and only runs in the "
1738
"bzr client.", (0, 15), None))
1739
self.create_hook(HookPoint('pre_commit',
1740
"Called after a commit is calculated but before it is is "
1741
"completed. pre_commit is called with (local, master, old_revno, "
1742
"old_revid, future_revno, future_revid, tree_delta, future_tree"
1743
"). old_revid is NULL_REVISION for the first commit to a branch, "
1744
"tree_delta is a TreeDelta object describing changes from the "
1745
"basis revision. hooks MUST NOT modify this delta. "
1746
" future_tree is an in-memory tree obtained from "
1747
"CommitBuilder.revision_tree() and hooks MUST NOT modify this "
1748
"tree.", (0,91), None))
1749
self.create_hook(HookPoint('post_commit',
1750
"Called in the bzr client after a commit has completed. "
1751
"post_commit is called with (local, master, old_revno, old_revid, "
1752
"new_revno, new_revid). old_revid is NULL_REVISION for the first "
1753
"commit to a branch.", (0, 15), None))
1754
self.create_hook(HookPoint('post_uncommit',
1755
"Called in the bzr client after an uncommit completes. "
1756
"post_uncommit is called with (local, master, old_revno, "
1757
"old_revid, new_revno, new_revid) where local is the local branch "
1758
"or None, master is the target branch, and an empty branch "
1759
"receives new_revno of 0, new_revid of None.", (0, 15), None))
1760
self.create_hook(HookPoint('pre_change_branch_tip',
1761
"Called in bzr client and server before a change to the tip of a "
1762
"branch is made. pre_change_branch_tip is called with a "
1763
"bzrlib.branch.ChangeBranchTipParams. Note that push, pull, "
1764
"commit, uncommit will all trigger this hook.", (1, 6), None))
1765
self.create_hook(HookPoint('post_change_branch_tip',
1766
"Called in bzr client and server after a change to the tip of a "
1767
"branch is made. post_change_branch_tip is called with a "
1768
"bzrlib.branch.ChangeBranchTipParams. Note that push, pull, "
1769
"commit, uncommit will all trigger this hook.", (1, 4), None))
1770
self.create_hook(HookPoint('transform_fallback_location',
1771
"Called when a stacked branch is activating its fallback "
1772
"locations. transform_fallback_location is called with (branch, "
1773
"url), and should return a new url. Returning the same url "
1774
"allows it to be used as-is, returning a different one can be "
1775
"used to cause the branch to stack on a closer copy of that "
1776
"fallback_location. Note that the branch cannot have history "
1777
"accessing methods called on it during this hook because the "
1778
"fallback locations have not been activated. When there are "
1779
"multiple hooks installed for transform_fallback_location, "
1780
"all are called with the url returned from the previous hook."
1781
"The order is however undefined.", (1, 9), None))
1782
self.create_hook(HookPoint('automatic_tag_name',
1783
"Called to determine an automatic tag name for a revision."
1784
"automatic_tag_name is called with (branch, revision_id) and "
1785
"should return a tag name or None if no tag name could be "
1786
"determined. The first non-None tag name returned will be used.",
1788
self.create_hook(HookPoint('post_branch_init',
1789
"Called after new branch initialization completes. "
1790
"post_branch_init is called with a "
1791
"bzrlib.branch.BranchInitHookParams. "
1792
"Note that init, branch and checkout (both heavyweight and "
1793
"lightweight) will all trigger this hook.", (2, 2), None))
1794
self.create_hook(HookPoint('post_switch',
1795
"Called after a checkout switches branch. "
1796
"post_switch is called with a "
1797
"bzrlib.branch.SwitchHookParams.", (2, 2), None))
814
# Introduced in 0.15:
815
# invoked whenever the revision history has been set
816
# with set_revision_history. The api signature is
817
# (branch, revision_history), and the branch will
820
# invoked after a push operation completes.
821
# the api signature is
822
# (source, local, master, old_revno, old_revid, new_revno, new_revid)
823
# where local is the local branch or None, master is the target
824
# master branch, and the rest should be self explanatory. The source
825
# is read locked and the target branches write locked. Source will
826
# be the local low-latency branch.
827
self['post_push'] = []
828
# invoked after a pull operation completes.
829
# the api signature is
830
# (source, local, master, old_revno, old_revid, new_revno, new_revid)
831
# where local is the local branch or None, master is the target
832
# master branch, and the rest should be self explanatory. The source
833
# is read locked and the target branches write locked. The local
834
# branch is the low-latency branch.
835
self['post_pull'] = []
836
# invoked after a commit operation completes.
837
# the api signature is
838
# (local, master, old_revno, old_revid, new_revno, new_revid)
839
# old_revid is NULL_REVISION for the first commit to a branch.
840
self['post_commit'] = []
841
# invoked after a uncommit operation completes.
842
# the api signature is
843
# (local, master, old_revno, old_revid, new_revno, new_revid) where
844
# local is the local branch or None, master is the target branch,
845
# and an empty branch recieves new_revno of 0, new_revid of None.
846
self['post_uncommit'] = []
848
def install_hook(self, hook_name, a_callable):
849
"""Install a_callable in to the hook hook_name.
851
:param hook_name: A hook name. See the __init__ method of BranchHooks
852
for the complete list of hooks.
853
:param a_callable: The callable to be invoked when the hook triggers.
854
The exact signature will depend on the hook - see the __init__
855
method of BranchHooks for details on each hook.
858
self[hook_name].append(a_callable)
860
raise errors.UnknownHook('branch', hook_name)
1801
863
# install the default hooks into the Branch class.
1802
864
Branch.hooks = BranchHooks()
1805
class ChangeBranchTipParams(object):
1806
"""Object holding parameters passed to *_change_branch_tip hooks.
1808
There are 5 fields that hooks may wish to access:
1810
:ivar branch: the branch being changed
1811
:ivar old_revno: revision number before the change
1812
:ivar new_revno: revision number after the change
1813
:ivar old_revid: revision id before the change
1814
:ivar new_revid: revision id after the change
1816
The revid fields are strings. The revno fields are integers.
1819
def __init__(self, branch, old_revno, new_revno, old_revid, new_revid):
1820
"""Create a group of ChangeBranchTip parameters.
1822
:param branch: The branch being changed.
1823
:param old_revno: Revision number before the change.
1824
:param new_revno: Revision number after the change.
1825
:param old_revid: Tip revision id before the change.
1826
:param new_revid: Tip revision id after the change.
1828
self.branch = branch
1829
self.old_revno = old_revno
1830
self.new_revno = new_revno
1831
self.old_revid = old_revid
1832
self.new_revid = new_revid
1834
def __eq__(self, other):
1835
return self.__dict__ == other.__dict__
1838
return "<%s of %s from (%s, %s) to (%s, %s)>" % (
1839
self.__class__.__name__, self.branch,
1840
self.old_revno, self.old_revid, self.new_revno, self.new_revid)
1843
class BranchInitHookParams(object):
1844
"""Object holding parameters passed to *_branch_init hooks.
1846
There are 4 fields that hooks may wish to access:
1848
:ivar format: the branch format
1849
:ivar bzrdir: the BzrDir where the branch will be/has been initialized
1850
:ivar name: name of colocated branch, if any (or None)
1851
:ivar branch: the branch created
1853
Note that for lightweight checkouts, the bzrdir and format fields refer to
1854
the checkout, hence they are different from the corresponding fields in
1855
branch, which refer to the original branch.
1858
def __init__(self, format, a_bzrdir, name, branch):
1859
"""Create a group of BranchInitHook parameters.
1861
:param format: the branch format
1862
:param a_bzrdir: the BzrDir where the branch will be/has been
1864
:param name: name of colocated branch, if any (or None)
1865
:param branch: the branch created
1867
Note that for lightweight checkouts, the bzrdir and format fields refer
1868
to the checkout, hence they are different from the corresponding fields
1869
in branch, which refer to the original branch.
1871
self.format = format
1872
self.bzrdir = a_bzrdir
1874
self.branch = branch
1876
def __eq__(self, other):
1877
return self.__dict__ == other.__dict__
1881
return "<%s of %s>" % (self.__class__.__name__, self.branch)
1883
return "<%s of format:%s bzrdir:%s>" % (
1884
self.__class__.__name__, self.branch,
1885
self.format, self.bzrdir)
1888
class SwitchHookParams(object):
1889
"""Object holding parameters passed to *_switch hooks.
1891
There are 4 fields that hooks may wish to access:
1893
:ivar control_dir: BzrDir of the checkout to change
1894
:ivar to_branch: branch that the checkout is to reference
1895
:ivar force: skip the check for local commits in a heavy checkout
1896
:ivar revision_id: revision ID to switch to (or None)
1899
def __init__(self, control_dir, to_branch, force, revision_id):
1900
"""Create a group of SwitchHook parameters.
1902
:param control_dir: BzrDir of the checkout to change
1903
:param to_branch: branch that the checkout is to reference
1904
:param force: skip the check for local commits in a heavy checkout
1905
:param revision_id: revision ID to switch to (or None)
1907
self.control_dir = control_dir
1908
self.to_branch = to_branch
1910
self.revision_id = revision_id
1912
def __eq__(self, other):
1913
return self.__dict__ == other.__dict__
1916
return "<%s for %s to (%s, %s)>" % (self.__class__.__name__,
1917
self.control_dir, self.to_branch,
1921
867
class BzrBranchFormat4(BranchFormat):
1922
868
"""Bzr branch format 4.
1930
876
"""See BranchFormat.get_format_description()."""
1931
877
return "Branch format 4"
1933
def initialize(self, a_bzrdir, name=None):
879
def initialize(self, a_bzrdir):
1934
880
"""Create a branch of this format in a_bzrdir."""
1935
881
utf8_files = [('revision-history', ''),
1936
882
('branch-name', ''),
1938
return self._initialize_helper(a_bzrdir, utf8_files, name=name,
884
return self._initialize_helper(a_bzrdir, utf8_files,
1939
885
lock_type='branch4', set_format=False)
1941
887
def __init__(self):
1942
888
super(BzrBranchFormat4, self).__init__()
1943
889
self._matchingbzrdir = bzrdir.BzrDirFormat6()
1945
def network_name(self):
1946
"""The network name for this format is the control dirs disk label."""
1947
return self._matchingbzrdir.get_format_string()
891
def open(self, a_bzrdir, _found=False):
892
"""Return the branch object for a_bzrdir
1949
def open(self, a_bzrdir, name=None, _found=False, ignore_fallbacks=False):
1950
"""See BranchFormat.open()."""
894
_found is a private parameter, do not use it. It is used to indicate
895
if format probing has already be done.
1952
898
# we are being called directly and must probe.
1953
899
raise NotImplementedError
1954
900
return BzrBranch(_format=self,
1955
901
_control_files=a_bzrdir._control_files,
1956
902
a_bzrdir=a_bzrdir,
1958
903
_repository=a_bzrdir.open_repository())
1960
905
def __str__(self):
1961
906
return "Bazaar-NG branch format 4"
1964
class BranchFormatMetadir(BranchFormat):
1965
"""Common logic for meta-dir based branch formats."""
1967
def _branch_class(self):
1968
"""What class to instantiate on open calls."""
1969
raise NotImplementedError(self._branch_class)
1971
def network_name(self):
1972
"""A simple byte string uniquely identifying this format for RPC calls.
1974
Metadir branch formats use their format string.
1976
return self.get_format_string()
1978
def open(self, a_bzrdir, name=None, _found=False, ignore_fallbacks=False):
1979
"""See BranchFormat.open()."""
1981
format = BranchFormat.find_format(a_bzrdir, name=name)
1982
if format.__class__ != self.__class__:
1983
raise AssertionError("wrong format %r found for %r" %
1985
transport = a_bzrdir.get_branch_transport(None, name=name)
1987
control_files = lockable_files.LockableFiles(transport, 'lock',
1989
return self._branch_class()(_format=self,
1990
_control_files=control_files,
1993
_repository=a_bzrdir.find_repository(),
1994
ignore_fallbacks=ignore_fallbacks)
1995
except errors.NoSuchFile:
1996
raise errors.NotBranchError(path=transport.base, bzrdir=a_bzrdir)
1999
super(BranchFormatMetadir, self).__init__()
2000
self._matchingbzrdir = bzrdir.BzrDirMetaFormat1()
2001
self._matchingbzrdir.set_branch_format(self)
2003
def supports_tags(self):
2007
class BzrBranchFormat5(BranchFormatMetadir):
909
class BzrBranchFormat5(BranchFormat):
2008
910
"""Bzr branch format 5.
2010
912
This format has:
2027
926
def get_format_description(self):
2028
927
"""See BranchFormat.get_format_description()."""
2029
928
return "Branch format 5"
2031
def initialize(self, a_bzrdir, name=None):
930
def initialize(self, a_bzrdir):
2032
931
"""Create a branch of this format in a_bzrdir."""
2033
932
utf8_files = [('revision-history', ''),
2034
933
('branch-name', ''),
2036
return self._initialize_helper(a_bzrdir, utf8_files, name)
2038
def supports_tags(self):
2042
class BzrBranchFormat6(BranchFormatMetadir):
2043
"""Branch format with last-revision and tags.
935
return self._initialize_helper(a_bzrdir, utf8_files)
938
super(BzrBranchFormat5, self).__init__()
939
self._matchingbzrdir = bzrdir.BzrDirMetaFormat1()
941
def open(self, a_bzrdir, _found=False):
942
"""Return the branch object for a_bzrdir
944
_found is a private parameter, do not use it. It is used to indicate
945
if format probing has already be done.
948
format = BranchFormat.find_format(a_bzrdir)
949
assert format.__class__ == self.__class__
950
transport = a_bzrdir.get_branch_transport(None)
951
control_files = lockable_files.LockableFiles(transport, 'lock',
953
return BzrBranch5(_format=self,
954
_control_files=control_files,
956
_repository=a_bzrdir.find_repository())
959
return "Bazaar-NG Metadir branch format 5"
962
class BzrBranchFormat6(BzrBranchFormat5):
963
"""Branch format with last-revision
2045
965
Unlike previous formats, this has no explicit revision history. Instead,
2046
966
this just stores the last-revision, and the left-hand history leading
2047
967
up to there is the history.
2049
969
This format was introduced in bzr 0.15
2050
and became the default in 0.91.
2053
def _branch_class(self):
2056
972
def get_format_string(self):
2057
973
"""See BranchFormat.get_format_string()."""
2058
return "Bazaar Branch Format 6 (bzr 0.15)\n"
974
return "Bazaar-NG branch format 6\n"
2060
976
def get_format_description(self):
2061
977
"""See BranchFormat.get_format_description()."""
2062
978
return "Branch format 6"
2064
def initialize(self, a_bzrdir, name=None):
2065
"""Create a branch of this format in a_bzrdir."""
2066
utf8_files = [('last-revision', '0 null:\n'),
2067
('branch.conf', ''),
2070
return self._initialize_helper(a_bzrdir, utf8_files, name)
2072
def make_tags(self, branch):
2073
"""See bzrlib.branch.BranchFormat.make_tags()."""
2074
return BasicTags(branch)
2076
def supports_set_append_revisions_only(self):
2080
class BzrBranchFormat8(BranchFormatMetadir):
2081
"""Metadir format supporting storing locations of subtree branches."""
2083
def _branch_class(self):
2086
def get_format_string(self):
2087
"""See BranchFormat.get_format_string()."""
2088
return "Bazaar Branch Format 8 (needs bzr 1.15)\n"
2090
def get_format_description(self):
2091
"""See BranchFormat.get_format_description()."""
2092
return "Branch format 8"
2094
def initialize(self, a_bzrdir, name=None):
2095
"""Create a branch of this format in a_bzrdir."""
2096
utf8_files = [('last-revision', '0 null:\n'),
2097
('branch.conf', ''),
2101
return self._initialize_helper(a_bzrdir, utf8_files, name)
2104
super(BzrBranchFormat8, self).__init__()
2105
self._matchingbzrdir.repository_format = \
2106
RepositoryFormatKnitPack5RichRoot()
2108
def make_tags(self, branch):
2109
"""See bzrlib.branch.BranchFormat.make_tags()."""
2110
return BasicTags(branch)
2112
def supports_set_append_revisions_only(self):
2115
def supports_stacking(self):
2118
supports_reference_locations = True
2121
class BzrBranchFormat7(BzrBranchFormat8):
2122
"""Branch format with last-revision, tags, and a stacked location pointer.
2124
The stacked location pointer is passed down to the repository and requires
2125
a repository format with supports_external_lookups = True.
2127
This format was introduced in bzr 1.6.
2130
def initialize(self, a_bzrdir, name=None):
2131
"""Create a branch of this format in a_bzrdir."""
2132
utf8_files = [('last-revision', '0 null:\n'),
2133
('branch.conf', ''),
2136
return self._initialize_helper(a_bzrdir, utf8_files, name)
2138
def _branch_class(self):
2141
def get_format_string(self):
2142
"""See BranchFormat.get_format_string()."""
2143
return "Bazaar Branch Format 7 (needs bzr 1.6)\n"
2145
def get_format_description(self):
2146
"""See BranchFormat.get_format_description()."""
2147
return "Branch format 7"
2149
def supports_set_append_revisions_only(self):
2152
supports_reference_locations = False
980
def initialize(self, a_bzrdir):
981
"""Create a branch of this format in a_bzrdir."""
982
utf8_files = [('last-revision', '0 null:\n'),
986
return self._initialize_helper(a_bzrdir, utf8_files)
988
def open(self, a_bzrdir, _found=False):
989
"""Return the branch object for a_bzrdir
991
_found is a private parameter, do not use it. It is used to indicate
992
if format probing has already be done.
995
format = BranchFormat.find_format(a_bzrdir)
996
assert format.__class__ == self.__class__
997
transport = a_bzrdir.get_branch_transport(None)
998
control_files = lockable_files.LockableFiles(transport, 'lock',
1000
return BzrBranch6(_format=self,
1001
_control_files=control_files,
1003
_repository=a_bzrdir.find_repository())
2155
1006
class BranchReferenceFormat(BranchFormat):
2170
1021
def get_format_description(self):
2171
1022
"""See BranchFormat.get_format_description()."""
2172
1023
return "Checkout reference format 1"
2174
def get_reference(self, a_bzrdir, name=None):
2175
"""See BranchFormat.get_reference()."""
2176
transport = a_bzrdir.get_branch_transport(None, name=name)
2177
return transport.get_bytes('location')
2179
def set_reference(self, a_bzrdir, name, to_branch):
2180
"""See BranchFormat.set_reference()."""
2181
transport = a_bzrdir.get_branch_transport(None, name=name)
2182
location = transport.put_bytes('location', to_branch.base)
2184
def initialize(self, a_bzrdir, name=None, target_branch=None):
1025
def initialize(self, a_bzrdir, target_branch=None):
2185
1026
"""Create a branch of this format in a_bzrdir."""
2186
1027
if target_branch is None:
2187
1028
# this format does not implement branch itself, thus the implicit
2188
1029
# creation contract must see it as uninitializable
2189
1030
raise errors.UninitializableFormat(self)
2190
mutter('creating branch reference in %s', a_bzrdir.user_url)
2191
branch_transport = a_bzrdir.get_branch_transport(self, name=name)
1031
mutter('creating branch reference in %s', a_bzrdir.transport.base)
1032
branch_transport = a_bzrdir.get_branch_transport(self)
2192
1033
branch_transport.put_bytes('location',
2193
target_branch.bzrdir.user_url)
1034
target_branch.bzrdir.root_transport.base)
2194
1035
branch_transport.put_bytes('format', self.get_format_string())
2196
a_bzrdir, name, _found=True,
2197
possible_transports=[target_branch.bzrdir.root_transport])
2198
self._run_post_branch_init_hooks(a_bzrdir, name, branch)
1036
return self.open(a_bzrdir, _found=True)
2201
1038
def __init__(self):
2202
1039
super(BranchReferenceFormat, self).__init__()
2203
1040
self._matchingbzrdir = bzrdir.BzrDirMetaFormat1()
2204
self._matchingbzrdir.set_branch_format(self)
2206
1042
def _make_reference_clone_function(format, a_branch):
2207
1043
"""Create a clone() routine for a branch dynamically."""
2208
def clone(to_bzrdir, revision_id=None,
2209
repository_policy=None):
1044
def clone(to_bzrdir, revision_id=None):
2210
1045
"""See Branch.clone()."""
2211
return format.initialize(to_bzrdir, target_branch=a_branch)
1046
return format.initialize(to_bzrdir, a_branch)
2212
1047
# cannot obey revision_id limits when cloning a reference ...
2213
1048
# FIXME RBC 20060210 either nuke revision_id for clone, or
2214
1049
# emit some sort of warning/error to the caller ?!
2217
def open(self, a_bzrdir, name=None, _found=False, location=None,
2218
possible_transports=None, ignore_fallbacks=False):
1052
def open(self, a_bzrdir, _found=False):
2219
1053
"""Return the branch that the branch reference in a_bzrdir points at.
2221
:param a_bzrdir: A BzrDir that contains a branch.
2222
:param name: Name of colocated branch to open, if any
2223
:param _found: a private parameter, do not use it. It is used to
2224
indicate if format probing has already be done.
2225
:param ignore_fallbacks: when set, no fallback branches will be opened
2226
(if there are any). Default is to open fallbacks.
2227
:param location: The location of the referenced branch. If
2228
unspecified, this will be determined from the branch reference in
2230
:param possible_transports: An optional reusable transports list.
1055
_found is a private parameter, do not use it. It is used to indicate
1056
if format probing has already be done.
2233
format = BranchFormat.find_format(a_bzrdir, name=name)
2234
if format.__class__ != self.__class__:
2235
raise AssertionError("wrong format %r found for %r" %
2237
if location is None:
2238
location = self.get_reference(a_bzrdir, name)
2239
real_bzrdir = bzrdir.BzrDir.open(
2240
location, possible_transports=possible_transports)
2241
result = real_bzrdir.open_branch(name=name,
2242
ignore_fallbacks=ignore_fallbacks)
1059
format = BranchFormat.find_format(a_bzrdir)
1060
assert format.__class__ == self.__class__
1061
transport = a_bzrdir.get_branch_transport(None)
1062
real_bzrdir = bzrdir.BzrDir.open(transport.get('location').read())
1063
result = real_bzrdir.open_branch()
2243
1064
# this changes the behaviour of result.clone to create a new reference
2244
1065
# rather than a copy of the content of the branch.
2245
1066
# I did not use a proxy object because that needs much more extensive
2255
network_format_registry = registry.FormatRegistry()
2256
"""Registry of formats indexed by their network name.
2258
The network name for a branch format is an identifier that can be used when
2259
referring to formats with smart server operations. See
2260
BranchFormat.network_name() for more detail.
2264
1076
# formats which have no format string are not discoverable
2265
1077
# and not independently creatable, so are not registered.
2266
__format5 = BzrBranchFormat5()
2267
__format6 = BzrBranchFormat6()
2268
__format7 = BzrBranchFormat7()
2269
__format8 = BzrBranchFormat8()
2270
BranchFormat.register_format(__format5)
1078
__default_format = BzrBranchFormat5()
1079
BranchFormat.register_format(__default_format)
2271
1080
BranchFormat.register_format(BranchReferenceFormat())
2272
BranchFormat.register_format(__format6)
2273
BranchFormat.register_format(__format7)
2274
BranchFormat.register_format(__format8)
2275
BranchFormat.set_default_format(__format7)
1081
BranchFormat.register_format(BzrBranchFormat6())
1082
BranchFormat.set_default_format(__default_format)
2276
1083
_legacy_formats = [BzrBranchFormat4(),
2278
network_format_registry.register(
2279
_legacy_formats[0].network_name(), _legacy_formats[0].__class__)
2282
class BranchWriteLockResult(LogicalLockResult):
2283
"""The result of write locking a branch.
2285
:ivar branch_token: The token obtained from the underlying branch lock, or
2287
:ivar unlock: A callable which will unlock the lock.
2290
def __init__(self, unlock, branch_token):
2291
LogicalLockResult.__init__(self, unlock)
2292
self.branch_token = branch_token
2295
return "BranchWriteLockResult(%s, %s)" % (self.branch_token,
2299
class BzrBranch(Branch, _RelockDebugMixin):
1086
class BzrBranch(Branch):
2300
1087
"""A branch stored in the actual filesystem.
2302
1089
Note that it's "local" in the context of the filesystem; it doesn't
2303
1090
really matter if it's on an nfs/smb/afs/coda/... share, as long as
2304
1091
it's writable, and can be accessed via the normal filesystem API.
2306
:ivar _transport: Transport for file operations on this branch's
2307
control files, typically pointing to the .bzr/branch directory.
2308
:ivar repository: Repository for this branch.
2309
:ivar base: The url of the base directory for this branch; the one
2310
containing the .bzr directory.
2311
:ivar name: Optional colocated branch name as it exists in the control
2315
def __init__(self, _format=None,
2316
_control_files=None, a_bzrdir=None, name=None,
2317
_repository=None, ignore_fallbacks=False):
2318
"""Create new branch object at a particular location."""
1094
def __init__(self, transport=DEPRECATED_PARAMETER, init=DEPRECATED_PARAMETER,
1095
relax_version_check=DEPRECATED_PARAMETER, _format=None,
1096
_control_files=None, a_bzrdir=None, _repository=None):
1097
"""Create new branch object at a particular location.
1099
transport -- A Transport object, defining how to access files.
1101
init -- If True, create new control files in a previously
1102
unversioned directory. If False, the branch must already
1105
relax_version_check -- If true, the usual check for the branch
1106
version is not applied. This is intended only for
1107
upgrade/recovery type use; it's not guaranteed that
1108
all operations will work on old format branches.
2319
1110
if a_bzrdir is None:
2320
raise ValueError('a_bzrdir must be supplied')
1111
self.bzrdir = bzrdir.BzrDir.open(transport.base)
2322
1113
self.bzrdir = a_bzrdir
2323
self._base = self.bzrdir.transport.clone('..').base
2325
# XXX: We should be able to just do
2326
# self.base = self.bzrdir.root_transport.base
2327
# but this does not quite work yet -- mbp 20080522
1114
self._transport = self.bzrdir.transport.clone('..')
1115
self._base = self._transport.base
2328
1116
self._format = _format
2329
1117
if _control_files is None:
2330
1118
raise ValueError('BzrBranch _control_files is None')
2331
1119
self.control_files = _control_files
2332
self._transport = _control_files._transport
1120
if deprecated_passed(init):
1121
warn("BzrBranch.__init__(..., init=XXX): The init parameter is "
1122
"deprecated as of bzr 0.8. Please use Branch.create().",
1126
# this is slower than before deprecation, oh well never mind.
1127
# -> its deprecated.
1128
self._initialize(transport.base)
1129
self._check_format(_format)
1130
if deprecated_passed(relax_version_check):
1131
warn("BzrBranch.__init__(..., relax_version_check=XXX_: The "
1132
"relax_version_check parameter is deprecated as of bzr 0.8. "
1133
"Please use BzrDir.open_downlevel, or a BzrBranchFormat's "
1137
if (not relax_version_check
1138
and not self._format.is_supported()):
1139
raise errors.UnsupportedFormatError(format=fmt)
1140
if deprecated_passed(transport):
1141
warn("BzrBranch.__init__(transport=XXX...): The transport "
1142
"parameter is deprecated as of bzr 0.8. "
1143
"Please use Branch.open, or bzrdir.open_branch().",
2333
1146
self.repository = _repository
2334
Branch.__init__(self)
2336
1148
def __str__(self):
2337
if self.name is None:
2338
return '%s(%s)' % (self.__class__.__name__, self.user_url)
2340
return '%s(%s,%s)' % (self.__class__.__name__, self.user_url,
1149
return '%s(%r)' % (self.__class__.__name__, self.base)
2343
1151
__repr__ = __str__
2345
1153
def _get_base(self):
2346
"""Returns the directory containing the control directory."""
2347
1154
return self._base
2349
1156
base = property(_get_base, doc="The URL for the root of this branch.")
2351
def _get_config(self):
2352
return TransportConfig(self._transport, 'branch.conf')
1158
def _finish_transaction(self):
1159
"""Exit the current transaction."""
1160
return self.control_files._finish_transaction()
1162
def get_transaction(self):
1163
"""Return the current active transaction.
1165
If no transaction is active, this returns a passthrough object
1166
for which all data is immediately flushed and no caching happens.
1168
# this is an explicit function so that we can do tricky stuff
1169
# when the storage in rev_storage is elsewhere.
1170
# we probably need to hook the two 'lock a location' and
1171
# 'have a transaction' together more delicately, so that
1172
# we can have two locks (branch and storage) and one transaction
1173
# ... and finishing the transaction unlocks both, but unlocking
1174
# does not. - RBC 20051121
1175
return self.control_files.get_transaction()
1177
def _set_transaction(self, transaction):
1178
"""Set a new active transaction."""
1179
return self.control_files._set_transaction(transaction)
1181
def abspath(self, name):
1182
"""See Branch.abspath."""
1183
return self.control_files._transport.abspath(name)
1185
def _check_format(self, format):
1186
"""Identify the branch format if needed.
1188
The format is stored as a reference to the format object in
1189
self._format for code that needs to check it later.
1191
The format parameter is either None or the branch format class
1192
used to open this branch.
1194
FIXME: DELETE THIS METHOD when pre 0.8 support is removed.
1197
format = BranchFormat.find_format(self.bzrdir)
1198
self._format = format
1199
mutter("got branch format %s", self._format)
1202
def get_root_id(self):
1203
"""See Branch.get_root_id."""
1204
tree = self.repository.revision_tree(self.last_revision())
1205
return tree.inventory.root.file_id
2354
1207
def is_locked(self):
2355
1208
return self.control_files.is_locked()
2357
def lock_write(self, token=None):
2358
"""Lock the branch for write operations.
2360
:param token: A token to permit reacquiring a previously held and
2362
:return: A BranchWriteLockResult.
2364
if not self.is_locked():
2365
self._note_lock('w')
2366
# All-in-one needs to always unlock/lock.
2367
repo_control = getattr(self.repository, 'control_files', None)
2368
if self.control_files == repo_control or not self.is_locked():
2369
self.repository._warn_if_deprecated(self)
2370
self.repository.lock_write()
1210
def lock_write(self):
1211
self.repository.lock_write()
2375
return BranchWriteLockResult(self.unlock,
2376
self.control_files.lock_write(token=token))
1213
self.control_files.lock_write()
2379
self.repository.unlock()
1215
self.repository.unlock()
2382
1218
def lock_read(self):
2383
"""Lock the branch for read operations.
2385
:return: A bzrlib.lock.LogicalLockResult.
2387
if not self.is_locked():
2388
self._note_lock('r')
2389
# All-in-one needs to always unlock/lock.
2390
repo_control = getattr(self.repository, 'control_files', None)
2391
if self.control_files == repo_control or not self.is_locked():
2392
self.repository._warn_if_deprecated(self)
2393
self.repository.lock_read()
1219
self.repository.lock_read()
2398
1221
self.control_files.lock_read()
2399
return LogicalLockResult(self.unlock)
2402
self.repository.unlock()
1223
self.repository.unlock()
2405
@only_raises(errors.LockNotHeld, errors.LockBroken)
2406
1226
def unlock(self):
1227
# TODO: test for failed two phase locks. This is known broken.
2408
1229
self.control_files.unlock()
2410
# All-in-one needs to always unlock/lock.
2411
repo_control = getattr(self.repository, 'control_files', None)
2412
if (self.control_files == repo_control or
2413
not self.control_files.is_locked()):
2414
self.repository.unlock()
2415
if not self.control_files.is_locked():
2416
# we just released the lock
2417
self._clear_cached_state()
1231
self.repository.unlock()
2419
1233
def peek_lock_mode(self):
2420
1234
if self.control_files._lock_count == 0:
2430
1244
"""See Branch.print_file."""
2431
1245
return self.repository.print_file(file, revision_id)
1248
def append_revision(self, *revision_ids):
1249
"""See Branch.append_revision."""
1250
revision_ids = [osutils.safe_revision_id(r) for r in revision_ids]
1251
for revision_id in revision_ids:
1252
_mod_revision.check_not_reserved_id(revision_id)
1253
mutter("add {%s} to revision-history" % revision_id)
1254
rev_history = self.revision_history()
1255
rev_history.extend(revision_ids)
1256
self.set_revision_history(rev_history)
2433
1258
def _write_revision_history(self, history):
2434
1259
"""Factored out of set_revision_history.
2436
1261
This performs the actual writing to disk.
2437
1262
It is intended to be called by BzrBranch5.set_revision_history."""
2438
self._transport.put_bytes(
2439
'revision-history', '\n'.join(history),
2440
mode=self.bzrdir._get_file_mode())
1263
self.control_files.put_bytes(
1264
'revision-history', '\n'.join(history))
2442
1266
@needs_write_lock
2443
1267
def set_revision_history(self, rev_history):
2444
1268
"""See Branch.set_revision_history."""
2445
if 'evil' in debug.debug_flags:
2446
mutter_callsite(3, "set_revision_history scales with history.")
2447
check_not_reserved_id = _mod_revision.check_not_reserved_id
2448
for rev_id in rev_history:
2449
check_not_reserved_id(rev_id)
2450
if Branch.hooks['post_change_branch_tip']:
2451
# Don't calculate the last_revision_info() if there are no hooks
2453
old_revno, old_revid = self.last_revision_info()
2454
if len(rev_history) == 0:
2455
revid = _mod_revision.NULL_REVISION
2457
revid = rev_history[-1]
2458
self._run_pre_change_branch_tip_hooks(len(rev_history), revid)
1269
rev_history = [osutils.safe_revision_id(r) for r in rev_history]
2459
1270
self._write_revision_history(rev_history)
2460
self._clear_cached_state()
2461
self._cache_revision_history(rev_history)
1271
transaction = self.get_transaction()
1272
history = transaction.map.find_revision_history()
1273
if history is not None:
1274
# update the revision history in the identity map.
1275
history[:] = list(rev_history)
1276
# this call is disabled because revision_history is
1277
# not really an object yet, and the transaction is for objects.
1278
# transaction.register_dirty(history)
1280
transaction.map.add_revision_history(rev_history)
1281
# this call is disabled because revision_history is
1282
# not really an object yet, and the transaction is for objects.
1283
# transaction.register_clean(history)
2462
1284
for hook in Branch.hooks['set_rh']:
2463
1285
hook(self, rev_history)
2464
if Branch.hooks['post_change_branch_tip']:
2465
self._run_post_change_branch_tip_hooks(old_revno, old_revid)
2467
def _synchronize_history(self, destination, revision_id):
2468
"""Synchronize last revision and revision history between branches.
2470
This version is most efficient when the destination is also a
2471
BzrBranch5, but works for BzrBranch6 as long as the revision
2472
history is the true lefthand parent history, and all of the revisions
2473
are in the destination's repository. If not, set_revision_history
2476
:param destination: The branch to copy the history into
2477
:param revision_id: The revision-id to truncate history at. May
2478
be None to copy complete history.
2480
if not isinstance(destination._format, BzrBranchFormat5):
2481
super(BzrBranch, self)._synchronize_history(
2482
destination, revision_id)
2484
if revision_id == _mod_revision.NULL_REVISION:
2487
new_history = self.revision_history()
2488
if revision_id is not None and new_history != []:
2490
new_history = new_history[:new_history.index(revision_id) + 1]
2492
rev = self.repository.get_revision(revision_id)
2493
new_history = rev.get_history(self.repository)[1:]
2494
destination.set_revision_history(new_history)
2496
1287
@needs_write_lock
2497
1288
def set_last_revision_info(self, revno, revision_id):
2498
"""Set the last revision of this branch.
2500
The caller is responsible for checking that the revno is correct
2501
for this revision id.
2503
It may be possible to set the branch last revision to an id not
2504
present in the repository. However, branches can also be
2505
configured to check constraints on history, in which case this may not
2508
revision_id = _mod_revision.ensure_null(revision_id)
2509
# this old format stores the full history, but this api doesn't
2510
# provide it, so we must generate, and might as well check it's
1289
revision_id = osutils.safe_revision_id(revision_id)
2512
1290
history = self._lefthand_history(revision_id)
2513
if len(history) != revno:
2514
raise AssertionError('%d != %d' % (len(history), revno))
1291
assert len(history) == revno, '%d != %d' % (len(history), revno)
2515
1292
self.set_revision_history(history)
2517
1294
def _gen_revision_history(self):
2518
history = self._transport.get_bytes('revision-history').split('\n')
2519
if history[-1:] == ['']:
2520
# There shouldn't be a trailing newline, but just in case.
1295
get_cached_utf8 = cache_utf8.get_cached_utf8
1296
history = [get_cached_utf8(l.rstrip('\r\n')) for l in
1297
self.control_files.get('revision-history').readlines()]
1301
def revision_history(self):
1302
"""See Branch.revision_history."""
1303
transaction = self.get_transaction()
1304
history = transaction.map.find_revision_history()
1305
if history is not None:
1306
# mutter("cache hit for revision-history in %s", self)
1307
return list(history)
1308
history = self._gen_revision_history()
1309
transaction.map.add_revision_history(history)
1310
# this call is disabled because revision_history is
1311
# not really an object yet, and the transaction is for objects.
1312
# transaction.register_clean(history, precious=True)
1313
return list(history)
1315
def _lefthand_history(self, revision_id, last_rev=None,
1317
# stop_revision must be a descendant of last_revision
1318
stop_graph = self.repository.get_revision_graph(revision_id)
1319
if last_rev is not None and last_rev not in stop_graph:
1320
# our previous tip is not merged into stop_revision
1321
raise errors.DivergedBranches(self, other_branch)
1322
# make a new revision history from the graph
1323
current_rev_id = revision_id
1325
while current_rev_id not in (None, _mod_revision.NULL_REVISION):
1326
new_history.append(current_rev_id)
1327
current_rev_id_parents = stop_graph[current_rev_id]
1329
current_rev_id = current_rev_id_parents[0]
1331
current_rev_id = None
1332
new_history.reverse()
2524
1335
@needs_write_lock
2525
1336
def generate_revision_history(self, revision_id, last_rev=None,
2526
1337
other_branch=None):
2532
1343
:param other_branch: The other branch that DivergedBranches should
2533
1344
raise with respect to.
1346
revision_id = osutils.safe_revision_id(revision_id)
2535
1347
self.set_revision_history(self._lefthand_history(revision_id,
2536
1348
last_rev, other_branch))
1351
def update_revisions(self, other, stop_revision=None):
1352
"""See Branch.update_revisions."""
1355
if stop_revision is None:
1356
stop_revision = other.last_revision()
1357
if stop_revision is None:
1358
# if there are no commits, we're done.
1361
stop_revision = osutils.safe_revision_id(stop_revision)
1362
# whats the current last revision, before we fetch [and change it
1364
last_rev = self.last_revision()
1365
# we fetch here regardless of whether we need to so that we pickup
1367
self.fetch(other, stop_revision)
1368
my_ancestry = self.repository.get_ancestry(last_rev)
1369
if stop_revision in my_ancestry:
1370
# last_revision is a descendant of stop_revision
1372
self.generate_revision_history(stop_revision, last_rev=last_rev,
2538
1377
def basis_tree(self):
2539
1378
"""See Branch.basis_tree."""
2540
1379
return self.repository.revision_tree(self.last_revision())
1381
@deprecated_method(zero_eight)
1382
def working_tree(self):
1383
"""Create a Working tree object for this branch."""
1385
from bzrlib.transport.local import LocalTransport
1386
if (self.base.find('://') != -1 or
1387
not isinstance(self._transport, LocalTransport)):
1388
raise NoWorkingTree(self.base)
1389
return self.bzrdir.open_workingtree()
1392
def pull(self, source, overwrite=False, stop_revision=None,
1393
_hook_master=None, _run_hooks=True):
1396
:param _hook_master: Private parameter - set the branch to
1397
be supplied as the master to push hooks.
1398
:param _run_hooks: Private parameter - allow disabling of
1399
hooks, used when pushing to a master branch.
1403
old_count, old_tip = self.last_revision_info()
1405
self.update_revisions(source, stop_revision)
1406
except DivergedBranches:
1410
self.set_revision_history(source.revision_history())
1411
new_count, new_tip = self.last_revision_info()
1418
for hook in Branch.hooks['post_pull']:
1419
hook(source, _hook_local, _hook_master, old_count, old_tip,
1421
return new_count - old_count
2542
1425
def _get_parent_location(self):
2543
1426
_locs = ['parent', 'pull', 'x-pull']
2544
1427
for l in _locs:
2546
return self._transport.get_bytes(l).strip('\n')
2547
except errors.NoSuchFile:
1429
return self.control_files.get(l).read().strip('\n')
2551
def _basic_push(self, target, overwrite, stop_revision):
2552
"""Basic implementation of push without bound branches or hooks.
2554
Must be called with source read locked and target write locked.
1435
def push(self, target, overwrite=False, stop_revision=None,
1436
_hook_master=None, _run_hooks=True):
1439
:param _hook_master: Private parameter - set the branch to
1440
be supplied as the master to push hooks.
1441
:param _run_hooks: Private parameter - allow disabling of
1442
hooks, used when pushing to a master branch.
2556
result = BranchPushResult()
2557
result.source_branch = self
2558
result.target_branch = target
2559
result.old_revno, result.old_revid = target.last_revision_info()
2560
self.update_references(target)
2561
if result.old_revid != self.last_revision():
2562
# We assume that during 'push' this repository is closer than
2564
graph = self.repository.get_graph(target.repository)
2565
target.update_revisions(self, stop_revision,
2566
overwrite=overwrite, graph=graph)
2567
if self._push_should_merge_tags():
2568
result.tag_conflicts = self.tags.merge_to(target.tags,
2570
result.new_revno, result.new_revid = target.last_revision_info()
2573
def get_stacked_on_url(self):
2574
raise errors.UnstackableBranchFormat(self._format, self.user_url)
1446
old_count, old_tip = target.last_revision_info()
1448
target.update_revisions(self, stop_revision)
1449
except DivergedBranches:
1453
target.set_revision_history(self.revision_history())
1454
new_count, new_tip = target.last_revision_info()
1457
_hook_local = target
1459
_hook_master = target
1461
for hook in Branch.hooks['post_push']:
1462
hook(self, _hook_local, _hook_master, old_count, old_tip,
1464
return new_count - old_count
1468
def get_parent(self):
1469
"""See Branch.get_parent."""
1471
assert self.base[-1] == '/'
1472
parent = self._get_parent_location()
1475
# This is an old-format absolute path to a local branch
1476
# turn it into a url
1477
if parent.startswith('/'):
1478
parent = urlutils.local_path_to_url(parent.decode('utf8'))
1480
return urlutils.join(self.base[:-1], parent)
1481
except errors.InvalidURLJoin, e:
1482
raise errors.InaccessibleParent(parent, self.base)
1484
def get_push_location(self):
1485
"""See Branch.get_push_location."""
1486
push_loc = self.get_config().get_user_option('push_location')
2576
1489
def set_push_location(self, location):
2577
1490
"""See Branch.set_push_location."""
2579
1492
'push_location', location,
2580
1493
store=_mod_config.STORE_LOCATION_NORECURSE)
1496
def set_parent(self, url):
1497
"""See Branch.set_parent."""
1498
# TODO: Maybe delete old location files?
1499
# URLs should never be unicode, even on the local fs,
1500
# FIXUP this and get_parent in a future branch format bump:
1501
# read and rewrite the file, and have the new format code read
1502
# using .get not .get_utf8. RBC 20060125
1504
if isinstance(url, unicode):
1506
url = url.encode('ascii')
1507
except UnicodeEncodeError:
1508
raise bzrlib.errors.InvalidURL(url,
1509
"Urls must be 7-bit ascii, "
1510
"use bzrlib.urlutils.escape")
1511
url = urlutils.relative_url(self.base, url)
1512
self._set_parent_location(url)
2582
1514
def _set_parent_location(self, url):
2583
1515
if url is None:
2584
self._transport.delete('parent')
1516
self.control_files._transport.delete('parent')
2586
self._transport.put_bytes('parent', url + '\n',
2587
mode=self.bzrdir._get_file_mode())
1518
assert isinstance(url, str)
1519
self.control_files.put_bytes('parent', url + '\n')
1521
@deprecated_function(zero_nine)
1522
def tree_config(self):
1523
"""DEPRECATED; call get_config instead.
1524
TreeConfig has become part of BranchConfig."""
1525
return TreeConfig(self)
2590
1528
class BzrBranch5(BzrBranch):
2591
"""A format 5 branch. This supports new features over plain branches.
1529
"""A format 5 branch. This supports new features over plan branches.
2593
1531
It has support for a master_branch which is the data for bound branches.
1539
super(BzrBranch5, self).__init__(_format=_format,
1540
_control_files=_control_files,
1542
_repository=_repository)
1545
def pull(self, source, overwrite=False, stop_revision=None,
1547
"""Extends branch.pull to be bound branch aware.
1549
:param _run_hooks: Private parameter used to force hook running
1550
off during bound branch double-pushing.
1552
bound_location = self.get_bound_location()
1553
master_branch = None
1554
if bound_location and source.base != bound_location:
1555
# not pulling from master, so we need to update master.
1556
master_branch = self.get_master_branch()
1557
master_branch.lock_write()
1560
# pull from source into master.
1561
master_branch.pull(source, overwrite, stop_revision,
1563
return super(BzrBranch5, self).pull(source, overwrite,
1564
stop_revision, _hook_master=master_branch,
1565
_run_hooks=_run_hooks)
1568
master_branch.unlock()
1571
def push(self, target, overwrite=False, stop_revision=None):
1572
"""Updates branch.push to be bound branch aware."""
1573
bound_location = target.get_bound_location()
1574
master_branch = None
1575
if bound_location and target.base != bound_location:
1576
# not pushing to master, so we need to update master.
1577
master_branch = target.get_master_branch()
1578
master_branch.lock_write()
1581
# push into the master from this branch.
1582
super(BzrBranch5, self).push(master_branch, overwrite,
1583
stop_revision, _run_hooks=False)
1584
# and push into the target branch from this. Note that we push from
1585
# this branch again, because its considered the highest bandwidth
1587
return super(BzrBranch5, self).push(target, overwrite,
1588
stop_revision, _hook_master=master_branch)
1591
master_branch.unlock()
2596
1593
def get_bound_location(self):
2598
return self._transport.get_bytes('bound')[:-1]
1595
return self.control_files.get_utf8('bound').read()[:-1]
2599
1596
except errors.NoSuchFile:
2602
1599
@needs_read_lock
2603
def get_master_branch(self, possible_transports=None):
1600
def get_master_branch(self):
2604
1601
"""Return the branch we are bound to.
2606
1603
:return: Either a Branch, or None
2608
1605
This could memoise the branch, but if thats done
2668
1679
return self.set_bound_location(None)
2670
1681
@needs_write_lock
2671
def update(self, possible_transports=None):
2672
"""Synchronise this branch with the master branch if any.
1683
"""Synchronise this branch with the master branch if any.
2674
1685
:return: None or the last_revision that was pivoted out during the
2677
master = self.get_master_branch(possible_transports)
1688
master = self.get_master_branch()
2678
1689
if master is not None:
2679
old_tip = _mod_revision.ensure_null(self.last_revision())
1690
old_tip = self.last_revision()
2680
1691
self.pull(master, overwrite=True)
2681
if self.repository.get_graph().is_ancestor(old_tip,
2682
_mod_revision.ensure_null(self.last_revision())):
1692
if old_tip in self.repository.get_ancestry(self.last_revision()):
2688
class BzrBranch8(BzrBranch5):
2689
"""A branch that stores tree-reference locations."""
2691
def _open_hook(self):
2692
if self._ignore_fallbacks:
2695
url = self.get_stacked_on_url()
2696
except (errors.UnstackableRepositoryFormat, errors.NotStacked,
2697
errors.UnstackableBranchFormat):
2700
for hook in Branch.hooks['transform_fallback_location']:
2701
url = hook(self, url)
2703
hook_name = Branch.hooks.get_hook_name(hook)
2704
raise AssertionError(
2705
"'transform_fallback_location' hook %s returned "
2706
"None, not a URL." % hook_name)
2707
self._activate_fallback_location(url)
2709
def __init__(self, *args, **kwargs):
2710
self._ignore_fallbacks = kwargs.get('ignore_fallbacks', False)
2711
super(BzrBranch8, self).__init__(*args, **kwargs)
2712
self._last_revision_info_cache = None
2713
self._reference_info = None
2715
def _clear_cached_state(self):
2716
super(BzrBranch8, self)._clear_cached_state()
2717
self._last_revision_info_cache = None
2718
self._reference_info = None
2720
def _last_revision_info(self):
2721
revision_string = self._transport.get_bytes('last-revision')
1698
class BzrBranch6(BzrBranch5):
1701
def last_revision_info(self):
1702
revision_string = self.control_files.get('last-revision').read()
2722
1703
revno, revision_id = revision_string.rstrip('\n').split(' ', 1)
2723
1704
revision_id = cache_utf8.get_cached_utf8(revision_id)
2724
1705
revno = int(revno)
2725
1706
return revno, revision_id
1708
def last_revision(self):
1709
"""Return last revision id, or None"""
1710
revision_id = self.last_revision_info()[1]
1711
if revision_id == _mod_revision.NULL_REVISION:
2727
1715
def _write_last_revision_info(self, revno, revision_id):
2728
1716
"""Simply write out the revision id, with no checks.
2733
1721
Intended to be called by set_last_revision_info and
2734
1722
_write_revision_history.
2736
revision_id = _mod_revision.ensure_null(revision_id)
1724
if revision_id is None:
1725
revision_id = 'null:'
2737
1726
out_string = '%d %s\n' % (revno, revision_id)
2738
self._transport.put_bytes('last-revision', out_string,
2739
mode=self.bzrdir._get_file_mode())
1727
self.control_files.put_bytes('last-revision', out_string)
2741
1729
@needs_write_lock
2742
1730
def set_last_revision_info(self, revno, revision_id):
2743
revision_id = _mod_revision.ensure_null(revision_id)
2744
old_revno, old_revid = self.last_revision_info()
1731
revision_id = osutils.safe_revision_id(revision_id)
2745
1732
if self._get_append_revisions_only():
2746
1733
self._check_history_violation(revision_id)
2747
self._run_pre_change_branch_tip_hooks(revno, revision_id)
2748
1734
self._write_last_revision_info(revno, revision_id)
2749
self._clear_cached_state()
2750
self._last_revision_info_cache = revno, revision_id
2751
self._run_post_change_branch_tip_hooks(old_revno, old_revid)
2753
def _synchronize_history(self, destination, revision_id):
2754
"""Synchronize last revision and revision history between branches.
2756
:see: Branch._synchronize_history
2758
# XXX: The base Branch has a fast implementation of this method based
2759
# on set_last_revision_info, but BzrBranch/BzrBranch5 have a slower one
2760
# that uses set_revision_history. This class inherits from BzrBranch5,
2761
# but wants the fast implementation, so it calls
2762
# Branch._synchronize_history directly.
2763
Branch._synchronize_history(self, destination, revision_id)
1735
transaction = self.get_transaction()
1736
cached_history = transaction.map.find_revision_history()
1737
if cached_history is not None:
1738
transaction.map.remove_object(cached_history)
2765
1740
def _check_history_violation(self, revision_id):
2766
last_revision = _mod_revision.ensure_null(self.last_revision())
2767
if _mod_revision.is_null(last_revision):
1741
last_revision = self.last_revision()
1742
if last_revision is None:
2769
1744
if last_revision not in self._lefthand_history(revision_id):
2770
raise errors.AppendRevisionsOnlyViolation(self.user_url)
1745
raise errors.AppendRevisionsOnlyViolation(self.base)
2772
1747
def _gen_revision_history(self):
2773
1748
"""Generate the revision history from last revision
2775
last_revno, last_revision = self.last_revision_info()
2776
self._extend_partial_history(stop_index=last_revno-1)
2777
return list(reversed(self._partial_revision_history_cache))
1750
history = list(self.repository.iter_reverse_revision_history(
1751
self.last_revision()))
2779
1755
def _write_revision_history(self, history):
2780
1756
"""Factored out of set_revision_history.
2802
1816
"""Set the parent branch"""
2803
1817
return self._get_config_location('parent_location')
2806
def _set_all_reference_info(self, info_dict):
2807
"""Replace all reference info stored in a branch.
2809
:param info_dict: A dict of {file_id: (tree_path, branch_location)}
2812
writer = rio.RioWriter(s)
2813
for key, (tree_path, branch_location) in info_dict.iteritems():
2814
stanza = rio.Stanza(file_id=key, tree_path=tree_path,
2815
branch_location=branch_location)
2816
writer.write_stanza(stanza)
2817
self._transport.put_bytes('references', s.getvalue())
2818
self._reference_info = info_dict
2821
def _get_all_reference_info(self):
2822
"""Return all the reference info stored in a branch.
2824
:return: A dict of {file_id: (tree_path, branch_location)}
2826
if self._reference_info is not None:
2827
return self._reference_info
2828
rio_file = self._transport.get('references')
2830
stanzas = rio.read_stanzas(rio_file)
2831
info_dict = dict((s['file_id'], (s['tree_path'],
2832
s['branch_location'])) for s in stanzas)
2835
self._reference_info = info_dict
2838
def set_reference_info(self, file_id, tree_path, branch_location):
2839
"""Set the branch location to use for a tree reference.
2841
:param file_id: The file-id of the tree reference.
2842
:param tree_path: The path of the tree reference in the tree.
2843
:param branch_location: The location of the branch to retrieve tree
2846
info_dict = self._get_all_reference_info()
2847
info_dict[file_id] = (tree_path, branch_location)
2848
if None in (tree_path, branch_location):
2849
if tree_path is not None:
2850
raise ValueError('tree_path must be None when branch_location'
2852
if branch_location is not None:
2853
raise ValueError('branch_location must be None when tree_path'
2855
del info_dict[file_id]
2856
self._set_all_reference_info(info_dict)
2858
def get_reference_info(self, file_id):
2859
"""Get the tree_path and branch_location for a tree reference.
2861
:return: a tuple of (tree_path, branch_location)
2863
return self._get_all_reference_info().get(file_id, (None, None))
2865
def reference_parent(self, file_id, path, possible_transports=None):
2866
"""Return the parent branch for a tree-reference file_id.
2868
:param file_id: The file_id of the tree reference
2869
:param path: The path of the file_id in the tree
2870
:return: A branch associated with the file_id
2872
branch_location = self.get_reference_info(file_id)[1]
2873
if branch_location is None:
2874
return Branch.reference_parent(self, file_id, path,
2875
possible_transports)
2876
branch_location = urlutils.join(self.user_url, branch_location)
2877
return Branch.open(branch_location,
2878
possible_transports=possible_transports)
2880
1819
def set_push_location(self, location):
2881
1820
"""See Branch.set_push_location."""
2882
1821
self._set_config_location('push_location', location)
2915
1854
"""See Branch.get_old_bound_location"""
2916
1855
return self._get_bound_location(False)
2918
def get_stacked_on_url(self):
2919
# you can always ask for the URL; but you might not be able to use it
2920
# if the repo can't support stacking.
2921
## self._check_stackable_repo()
2922
stacked_url = self._get_config_location('stacked_on_location')
2923
if stacked_url is None:
2924
raise errors.NotStacked(self)
1857
def set_append_revisions_only(self, enabled):
1862
self.get_config().set_user_option('append_revisions_only', value)
2927
1864
def _get_append_revisions_only(self):
2928
return self.get_config(
2929
).get_user_option_as_bool('append_revisions_only')
2932
def generate_revision_history(self, revision_id, last_rev=None,
2934
"""See BzrBranch5.generate_revision_history"""
2935
history = self._lefthand_history(revision_id, last_rev, other_branch)
2936
revno = len(history)
2937
self.set_last_revision_info(revno, revision_id)
2940
def get_rev_id(self, revno, history=None):
2941
"""Find the revision id of the specified revno."""
2943
return _mod_revision.NULL_REVISION
2945
last_revno, last_revision_id = self.last_revision_info()
2946
if revno <= 0 or revno > last_revno:
2947
raise errors.NoSuchRevision(self, revno)
2949
if history is not None:
2950
return history[revno - 1]
2952
index = last_revno - revno
2953
if len(self._partial_revision_history_cache) <= index:
2954
self._extend_partial_history(stop_index=index)
2955
if len(self._partial_revision_history_cache) > index:
2956
return self._partial_revision_history_cache[index]
2958
raise errors.NoSuchRevision(self, revno)
2961
def revision_id_to_revno(self, revision_id):
2962
"""Given a revision id, return its revno"""
2963
if _mod_revision.is_null(revision_id):
2966
index = self._partial_revision_history_cache.index(revision_id)
2968
self._extend_partial_history(stop_revision=revision_id)
2969
index = len(self._partial_revision_history_cache) - 1
2970
if self._partial_revision_history_cache[index] != revision_id:
2971
raise errors.NoSuchRevision(self, revision_id)
2972
return self.revno() - index
2975
class BzrBranch7(BzrBranch8):
2976
"""A branch with support for a fallback repository."""
2978
def set_reference_info(self, file_id, tree_path, branch_location):
2979
Branch.set_reference_info(self, file_id, tree_path, branch_location)
2981
def get_reference_info(self, file_id):
2982
Branch.get_reference_info(self, file_id)
2984
def reference_parent(self, file_id, path, possible_transports=None):
2985
return Branch.reference_parent(self, file_id, path,
2986
possible_transports)
2989
class BzrBranch6(BzrBranch7):
2990
"""See BzrBranchFormat6 for the capabilities of this branch.
2992
This subclass of BzrBranch7 disables the new features BzrBranch7 added,
2996
def get_stacked_on_url(self):
2997
raise errors.UnstackableBranchFormat(self._format, self.user_url)
3000
######################################################################
3001
# results of operations
3004
class _Result(object):
3006
def _show_tag_conficts(self, to_file):
3007
if not getattr(self, 'tag_conflicts', None):
3009
to_file.write('Conflicting tags:\n')
3010
for name, value1, value2 in self.tag_conflicts:
3011
to_file.write(' %s\n' % (name, ))
3014
class PullResult(_Result):
3015
"""Result of a Branch.pull operation.
3017
:ivar old_revno: Revision number before pull.
3018
:ivar new_revno: Revision number after pull.
3019
:ivar old_revid: Tip revision id before pull.
3020
:ivar new_revid: Tip revision id after pull.
3021
:ivar source_branch: Source (local) branch object. (read locked)
3022
:ivar master_branch: Master branch of the target, or the target if no
3024
:ivar local_branch: target branch if there is a Master, else None
3025
:ivar target_branch: Target/destination branch object. (write locked)
3026
:ivar tag_conflicts: A list of tag conflicts, see BasicTags.merge_to
3030
# DEPRECATED: pull used to return the change in revno
3031
return self.new_revno - self.old_revno
3033
def report(self, to_file):
3035
if self.old_revid == self.new_revid:
3036
to_file.write('No revisions to pull.\n')
3038
to_file.write('Now on revision %d.\n' % self.new_revno)
3039
self._show_tag_conficts(to_file)
3042
class BranchPushResult(_Result):
3043
"""Result of a Branch.push operation.
3045
:ivar old_revno: Revision number (eg 10) of the target before push.
3046
:ivar new_revno: Revision number (eg 12) of the target after push.
3047
:ivar old_revid: Tip revision id (eg joe@foo.com-1234234-aoeua34) of target
3049
:ivar new_revid: Tip revision id (eg joe@foo.com-5676566-boa234a) of target
3051
:ivar source_branch: Source branch object that the push was from. This is
3052
read locked, and generally is a local (and thus low latency) branch.
3053
:ivar master_branch: If target is a bound branch, the master branch of
3054
target, or target itself. Always write locked.
3055
:ivar target_branch: The direct Branch where data is being sent (write
3057
:ivar local_branch: If the target is a bound branch this will be the
3058
target, otherwise it will be None.
3062
# DEPRECATED: push used to return the change in revno
3063
return self.new_revno - self.old_revno
3065
def report(self, to_file):
3066
"""Write a human-readable description of the result."""
3067
if self.old_revid == self.new_revid:
3068
note('No new revisions to push.')
3070
note('Pushed up to revision %d.' % self.new_revno)
3071
self._show_tag_conficts(to_file)
1865
value = self.get_config().get_user_option('append_revisions_only')
1866
return value == 'True'
1868
def _synchronize_history(self, destination, revision_id):
1869
"""Synchronize last revision and revision history between branches.
1871
This version is most efficient when the destination is also a
1872
BzrBranch6, but works for BzrBranch5, as long as the destination's
1873
repository contains all the lefthand ancestors of the intended
1874
last_revision. If not, set_last_revision_info will fail.
1876
:param destination: The branch to copy the history into
1877
:param revision_id: The revision-id to truncate history at. May
1878
be None to copy complete history.
1880
if revision_id is None:
1881
revno, revision_id = self.last_revision_info()
1883
revno = self.revision_id_to_revno(revision_id)
1884
destination.set_last_revision_info(revno, revision_id)
1887
class BranchTestProviderAdapter(object):
1888
"""A tool to generate a suite testing multiple branch formats at once.
1890
This is done by copying the test once for each transport and injecting
1891
the transport_server, transport_readonly_server, and branch_format
1892
classes into each copy. Each copy is also given a new id() to make it
1896
def __init__(self, transport_server, transport_readonly_server, formats):
1897
self._transport_server = transport_server
1898
self._transport_readonly_server = transport_readonly_server
1899
self._formats = formats
1901
def adapt(self, test):
1902
result = TestSuite()
1903
for branch_format, bzrdir_format in self._formats:
1904
new_test = deepcopy(test)
1905
new_test.transport_server = self._transport_server
1906
new_test.transport_readonly_server = self._transport_readonly_server
1907
new_test.bzrdir_format = bzrdir_format
1908
new_test.branch_format = branch_format
1909
def make_new_test_id():
1910
new_id = "%s(%s)" % (new_test.id(), branch_format.__class__.__name__)
1911
return lambda: new_id
1912
new_test.id = make_new_test_id()
1913
result.addTest(new_test)
3074
1917
class BranchCheckResult(object):
3102
1954
new_branch = format.open(branch.bzrdir, _found=True)
3104
1956
# Copy source data into target
3105
new_branch._write_last_revision_info(*branch.last_revision_info())
1957
new_branch.set_last_revision_info(*branch.last_revision_info())
3106
1958
new_branch.set_parent(branch.get_parent())
3107
1959
new_branch.set_bound_location(branch.get_bound_location())
3108
1960
new_branch.set_push_location(branch.get_push_location())
3110
# New branch has no tags by default
3111
new_branch.tags._set_tag_dict({})
3113
1962
# Copying done; now update target format
3114
new_branch._transport.put_bytes('format',
3115
format.get_format_string(),
3116
mode=new_branch.bzrdir._get_file_mode())
1963
new_branch.control_files.put_utf8('format',
1964
format.get_format_string())
3118
1966
# Clean up old files
3119
new_branch._transport.delete('revision-history')
1967
new_branch.control_files._transport.delete('revision-history')
3121
1969
branch.set_parent(None)
3122
except errors.NoSuchFile:
3124
1972
branch.set_bound_location(None)
3127
class Converter6to7(object):
3128
"""Perform an in-place upgrade of format 6 to format 7"""
3130
def convert(self, branch):
3131
format = BzrBranchFormat7()
3132
branch._set_config_location('stacked_on_location', '')
3133
# update target format
3134
branch._transport.put_bytes('format', format.get_format_string())
3137
class Converter7to8(object):
3138
"""Perform an in-place upgrade of format 6 to format 7"""
3140
def convert(self, branch):
3141
format = BzrBranchFormat8()
3142
branch._transport.put_bytes('references', '')
3143
# update target format
3144
branch._transport.put_bytes('format', format.get_format_string())
3147
def _run_with_write_locked_target(target, callable, *args, **kwargs):
3148
"""Run ``callable(*args, **kwargs)``, write-locking target for the
3151
_run_with_write_locked_target will attempt to release the lock it acquires.
3153
If an exception is raised by callable, then that exception *will* be
3154
propagated, even if the unlock attempt raises its own error. Thus
3155
_run_with_write_locked_target should be preferred to simply doing::
3159
return callable(*args, **kwargs)
3164
# This is very similar to bzrlib.decorators.needs_write_lock. Perhaps they
3165
# should share code?
3168
result = callable(*args, **kwargs)
3170
exc_info = sys.exc_info()
3174
raise exc_info[0], exc_info[1], exc_info[2]
3180
class InterBranch(InterObject):
3181
"""This class represents operations taking place between two branches.
3183
Its instances have methods like pull() and push() and contain
3184
references to the source and target repositories these operations
3185
can be carried out on.
3189
"""The available optimised InterBranch types."""
3192
def _get_branch_formats_to_test():
3193
"""Return a tuple with the Branch formats to use when testing."""
3194
raise NotImplementedError(InterBranch._get_branch_formats_to_test)
3196
def pull(self, overwrite=False, stop_revision=None,
3197
possible_transports=None, local=False):
3198
"""Mirror source into target branch.
3200
The target branch is considered to be 'local', having low latency.
3202
:returns: PullResult instance
3204
raise NotImplementedError(self.pull)
3206
def update_revisions(self, stop_revision=None, overwrite=False,
3208
"""Pull in new perfect-fit revisions.
3210
:param stop_revision: Updated until the given revision
3211
:param overwrite: Always set the branch pointer, rather than checking
3212
to see if it is a proper descendant.
3213
:param graph: A Graph object that can be used to query history
3214
information. This can be None.
3217
raise NotImplementedError(self.update_revisions)
3219
def push(self, overwrite=False, stop_revision=None,
3220
_override_hook_source_branch=None):
3221
"""Mirror the source branch into the target branch.
3223
The source branch is considered to be 'local', having low latency.
3225
raise NotImplementedError(self.push)
3228
class GenericInterBranch(InterBranch):
3229
"""InterBranch implementation that uses public Branch functions.
3233
def _get_branch_formats_to_test():
3234
return BranchFormat._default_format, BranchFormat._default_format
3236
def update_revisions(self, stop_revision=None, overwrite=False,
3238
"""See InterBranch.update_revisions()."""
3239
self.source.lock_read()
3241
other_revno, other_last_revision = self.source.last_revision_info()
3242
stop_revno = None # unknown
3243
if stop_revision is None:
3244
stop_revision = other_last_revision
3245
if _mod_revision.is_null(stop_revision):
3246
# if there are no commits, we're done.
3248
stop_revno = other_revno
3250
# what's the current last revision, before we fetch [and change it
3252
last_rev = _mod_revision.ensure_null(self.target.last_revision())
3253
# we fetch here so that we don't process data twice in the common
3254
# case of having something to pull, and so that the check for
3255
# already merged can operate on the just fetched graph, which will
3256
# be cached in memory.
3257
self.target.fetch(self.source, stop_revision)
3258
# Check to see if one is an ancestor of the other
3261
graph = self.target.repository.get_graph()
3262
if self.target._check_if_descendant_or_diverged(
3263
stop_revision, last_rev, graph, self.source):
3264
# stop_revision is a descendant of last_rev, but we aren't
3265
# overwriting, so we're done.
3267
if stop_revno is None:
3269
graph = self.target.repository.get_graph()
3270
this_revno, this_last_revision = \
3271
self.target.last_revision_info()
3272
stop_revno = graph.find_distance_to_null(stop_revision,
3273
[(other_last_revision, other_revno),
3274
(this_last_revision, this_revno)])
3275
self.target.set_last_revision_info(stop_revno, stop_revision)
3277
self.source.unlock()
3279
def pull(self, overwrite=False, stop_revision=None,
3280
possible_transports=None, _hook_master=None, run_hooks=True,
3281
_override_hook_target=None, local=False):
3284
:param _hook_master: Private parameter - set the branch to
3285
be supplied as the master to pull hooks.
3286
:param run_hooks: Private parameter - if false, this branch
3287
is being called because it's the master of the primary branch,
3288
so it should not run its hooks.
3289
:param _override_hook_target: Private parameter - set the branch to be
3290
supplied as the target_branch to pull hooks.
3291
:param local: Only update the local branch, and not the bound branch.
3293
# This type of branch can't be bound.
3295
raise errors.LocalRequiresBoundBranch()
3296
result = PullResult()
3297
result.source_branch = self.source
3298
if _override_hook_target is None:
3299
result.target_branch = self.target
3301
result.target_branch = _override_hook_target
3302
self.source.lock_read()
3304
# We assume that during 'pull' the target repository is closer than
3306
self.source.update_references(self.target)
3307
graph = self.target.repository.get_graph(self.source.repository)
3308
# TODO: Branch formats should have a flag that indicates
3309
# that revno's are expensive, and pull() should honor that flag.
3311
result.old_revno, result.old_revid = \
3312
self.target.last_revision_info()
3313
self.target.update_revisions(self.source, stop_revision,
3314
overwrite=overwrite, graph=graph)
3315
# TODO: The old revid should be specified when merging tags,
3316
# so a tags implementation that versions tags can only
3317
# pull in the most recent changes. -- JRV20090506
3318
result.tag_conflicts = self.source.tags.merge_to(self.target.tags,
3320
result.new_revno, result.new_revid = self.target.last_revision_info()
3322
result.master_branch = _hook_master
3323
result.local_branch = result.target_branch
3325
result.master_branch = result.target_branch
3326
result.local_branch = None
3328
for hook in Branch.hooks['post_pull']:
3331
self.source.unlock()
3334
def push(self, overwrite=False, stop_revision=None,
3335
_override_hook_source_branch=None):
3336
"""See InterBranch.push.
3338
This is the basic concrete implementation of push()
3340
:param _override_hook_source_branch: If specified, run
3341
the hooks passing this Branch as the source, rather than self.
3342
This is for use of RemoteBranch, where push is delegated to the
3343
underlying vfs-based Branch.
3345
# TODO: Public option to disable running hooks - should be trivial but
3347
self.source.lock_read()
3349
return _run_with_write_locked_target(
3350
self.target, self._push_with_bound_branches, overwrite,
3352
_override_hook_source_branch=_override_hook_source_branch)
3354
self.source.unlock()
3356
def _push_with_bound_branches(self, overwrite, stop_revision,
3357
_override_hook_source_branch=None):
3358
"""Push from source into target, and into target's master if any.
3361
if _override_hook_source_branch:
3362
result.source_branch = _override_hook_source_branch
3363
for hook in Branch.hooks['post_push']:
3366
bound_location = self.target.get_bound_location()
3367
if bound_location and self.target.base != bound_location:
3368
# there is a master branch.
3370
# XXX: Why the second check? Is it even supported for a branch to
3371
# be bound to itself? -- mbp 20070507
3372
master_branch = self.target.get_master_branch()
3373
master_branch.lock_write()
3375
# push into the master from the source branch.
3376
self.source._basic_push(master_branch, overwrite, stop_revision)
3377
# and push into the target branch from the source. Note that we
3378
# push from the source branch again, because its considered the
3379
# highest bandwidth repository.
3380
result = self.source._basic_push(self.target, overwrite,
3382
result.master_branch = master_branch
3383
result.local_branch = self.target
3387
master_branch.unlock()
3390
result = self.source._basic_push(self.target, overwrite,
3392
# TODO: Why set master_branch and local_branch if there's no
3393
# binding? Maybe cleaner to just leave them unset? -- mbp
3395
result.master_branch = self.target
3396
result.local_branch = None
3401
def is_compatible(self, source, target):
3402
# GenericBranch uses the public API, so always compatible
3406
class InterToBranch5(GenericInterBranch):
3409
def _get_branch_formats_to_test():
3410
return BranchFormat._default_format, BzrBranchFormat5()
3412
def pull(self, overwrite=False, stop_revision=None,
3413
possible_transports=None, run_hooks=True,
3414
_override_hook_target=None, local=False):
3415
"""Pull from source into self, updating my master if any.
3417
:param run_hooks: Private parameter - if false, this branch
3418
is being called because it's the master of the primary branch,
3419
so it should not run its hooks.
3421
bound_location = self.target.get_bound_location()
3422
if local and not bound_location:
3423
raise errors.LocalRequiresBoundBranch()
3424
master_branch = None
3425
if not local and bound_location and self.source.user_url != bound_location:
3426
# not pulling from master, so we need to update master.
3427
master_branch = self.target.get_master_branch(possible_transports)
3428
master_branch.lock_write()
3431
# pull from source into master.
3432
master_branch.pull(self.source, overwrite, stop_revision,
3434
return super(InterToBranch5, self).pull(overwrite,
3435
stop_revision, _hook_master=master_branch,
3436
run_hooks=run_hooks,
3437
_override_hook_target=_override_hook_target)
3440
master_branch.unlock()
3443
InterBranch.register_optimiser(GenericInterBranch)
3444
InterBranch.register_optimiser(InterToBranch5)
added
removed
bzrlib/branch.py
