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# Copyright (C) 2006-2011 Canonical Ltd
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 2 of the License, or
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# (at your option) any later version.
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the Free Software
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# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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"""BzrDir logic. The BzrDir is the basic control directory used by bzr.
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At format 7 this was split out into Branch, Repository and Checkout control
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Note: This module has a lot of ``open`` functions/methods that return
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references to in-memory objects. As a rule, there are no matching ``close``
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methods. To free any associated resources, simply stop referencing the
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from __future__ import absolute_import
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from bzrlib.lazy_import import lazy_import
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lazy_import(globals(), """
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branch as _mod_branch,
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revision as _mod_revision,
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transport as _mod_transport,
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from bzrlib.repofmt import knitpack_repo
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from bzrlib.transport import (
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do_catching_redirections,
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from bzrlib.i18n import gettext
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from bzrlib.trace import (
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from bzrlib.symbol_versioning import (
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class BzrDir(controldir.ControlDir):
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"""A .bzr control diretory.
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BzrDir instances let you create or open any of the things that can be
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found within .bzr - checkouts, branches and repositories.
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the transport which this bzr dir is rooted at (i.e. file:///.../.bzr/)
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a transport connected to the directory this bzr was opened from
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(i.e. the parent directory holding the .bzr directory).
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Everything in the bzrdir should have the same file permissions.
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:cvar hooks: An instance of BzrDirHooks.
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"""Invoke break_lock on the first object in the bzrdir.
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If there is a tree, the tree is opened and break_lock() called.
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Otherwise, branch is tried, and finally repository.
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# XXX: This seems more like a UI function than something that really
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# belongs in this class.
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thing_to_unlock = self.open_workingtree()
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except (errors.NotLocalUrl, errors.NoWorkingTree):
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thing_to_unlock = self.open_branch()
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except errors.NotBranchError:
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thing_to_unlock = self.open_repository()
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except errors.NoRepositoryPresent:
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thing_to_unlock.break_lock()
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def check_conversion_target(self, target_format):
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"""Check that a bzrdir as a whole can be converted to a new format."""
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# The only current restriction is that the repository content can be
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# fetched compatibly with the target.
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target_repo_format = target_format.repository_format
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self.open_repository()._format.check_conversion_target(
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except errors.NoRepositoryPresent:
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# No repo, no problem.
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def clone_on_transport(self, transport, revision_id=None,
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force_new_repo=False, preserve_stacking=False, stacked_on=None,
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create_prefix=False, use_existing_dir=True, no_tree=False):
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"""Clone this bzrdir and its contents to transport verbatim.
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:param transport: The transport for the location to produce the clone
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at. If the target directory does not exist, it will be created.
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:param revision_id: The tip revision-id to use for any branch or
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working tree. If not None, then the clone operation may tune
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itself to download less data.
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:param force_new_repo: Do not use a shared repository for the target,
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even if one is available.
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:param preserve_stacking: When cloning a stacked branch, stack the
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new branch on top of the other branch's stacked-on branch.
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:param create_prefix: Create any missing directories leading up to
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:param use_existing_dir: Use an existing directory if one exists.
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:param no_tree: If set to true prevents creation of a working tree.
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# Overview: put together a broad description of what we want to end up
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# with; then make as few api calls as possible to do it.
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# We may want to create a repo/branch/tree, if we do so what format
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# would we want for each:
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require_stacking = (stacked_on is not None)
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format = self.cloning_metadir(require_stacking)
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# Figure out what objects we want:
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local_repo = self.find_repository()
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except errors.NoRepositoryPresent:
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local_branch = self.open_branch()
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except errors.NotBranchError:
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# enable fallbacks when branch is not a branch reference
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if local_branch.repository.has_same_location(local_repo):
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local_repo = local_branch.repository
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if preserve_stacking:
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stacked_on = local_branch.get_stacked_on_url()
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except (errors.UnstackableBranchFormat,
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errors.UnstackableRepositoryFormat,
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# Bug: We create a metadir without knowing if it can support stacking,
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# we should look up the policy needs first, or just use it as a hint,
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make_working_trees = local_repo.make_working_trees() and not no_tree
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want_shared = local_repo.is_shared()
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repo_format_name = format.repository_format.network_name()
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make_working_trees = False
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repo_format_name = None
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result_repo, result, require_stacking, repository_policy = \
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format.initialize_on_transport_ex(transport,
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use_existing_dir=use_existing_dir, create_prefix=create_prefix,
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force_new_repo=force_new_repo, stacked_on=stacked_on,
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stack_on_pwd=self.root_transport.base,
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repo_format_name=repo_format_name,
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make_working_trees=make_working_trees, shared_repo=want_shared)
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# If the result repository is in the same place as the
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# resulting bzr dir, it will have no content, further if the
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# result is not stacked then we know all content should be
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# copied, and finally if we are copying up to a specific
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# revision_id then we can use the pending-ancestry-result which
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# does not require traversing all of history to describe it.
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if (result_repo.user_url == result.user_url
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and not require_stacking and
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revision_id is not None):
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fetch_spec = vf_search.PendingAncestryResult(
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[revision_id], local_repo)
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result_repo.fetch(local_repo, fetch_spec=fetch_spec)
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result_repo.fetch(local_repo, revision_id=revision_id)
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if result_repo is not None:
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raise AssertionError('result_repo not None(%r)' % result_repo)
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# 1 if there is a branch present
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# make sure its content is available in the target repository
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if local_branch is not None:
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result_branch = local_branch.clone(result, revision_id=revision_id,
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repository_policy=repository_policy)
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# Cheaper to check if the target is not local, than to try making
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result.root_transport.local_abspath('.')
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if result_repo is None or result_repo.make_working_trees():
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self.open_workingtree().clone(result, revision_id=revision_id)
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except (errors.NoWorkingTree, errors.NotLocalUrl):
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# TODO: This should be given a Transport, and should chdir up; otherwise
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# this will open a new connection.
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def _make_tail(self, url):
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t = _mod_transport.get_transport(url)
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def determine_repository_policy(self, force_new_repo=False, stack_on=None,
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stack_on_pwd=None, require_stacking=False):
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"""Return an object representing a policy to use.
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This controls whether a new repository is created, and the format of
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that repository, or some existing shared repository used instead.
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If stack_on is supplied, will not seek a containing shared repo.
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:param force_new_repo: If True, require a new repository to be created.
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:param stack_on: If supplied, the location to stack on. If not
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supplied, a default_stack_on location may be used.
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:param stack_on_pwd: If stack_on is relative, the location it is
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def repository_policy(found_bzrdir):
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config = found_bzrdir.get_config()
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stack_on = config.get_default_stack_on()
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if stack_on is not None:
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stack_on_pwd = found_bzrdir.user_url
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# does it have a repository ?
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repository = found_bzrdir.open_repository()
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except errors.NoRepositoryPresent:
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if (found_bzrdir.user_url != self.user_url
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and not repository.is_shared()):
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# Don't look higher, can't use a higher shared repo.
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return UseExistingRepository(repository, stack_on,
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stack_on_pwd, require_stacking=require_stacking), True
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return CreateRepository(self, stack_on, stack_on_pwd,
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require_stacking=require_stacking), True
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if not force_new_repo:
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policy = self._find_containing(repository_policy)
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if policy is not None:
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return UseExistingRepository(self.open_repository(),
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stack_on, stack_on_pwd,
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require_stacking=require_stacking)
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except errors.NoRepositoryPresent:
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return CreateRepository(self, stack_on, stack_on_pwd,
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require_stacking=require_stacking)
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def _find_or_create_repository(self, force_new_repo):
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"""Create a new repository if needed, returning the repository."""
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policy = self.determine_repository_policy(force_new_repo)
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return policy.acquire_repository()[0]
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def _find_source_repo(self, add_cleanup, source_branch):
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"""Find the source branch and repo for a sprout operation.
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This is helper intended for use by _sprout.
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:returns: (source_branch, source_repository). Either or both may be
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None. If not None, they will be read-locked (and their unlock(s)
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scheduled via the add_cleanup param).
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if source_branch is not None:
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add_cleanup(source_branch.lock_read().unlock)
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return source_branch, source_branch.repository
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source_branch = self.open_branch()
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source_repository = source_branch.repository
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except errors.NotBranchError:
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source_repository = self.open_repository()
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except errors.NoRepositoryPresent:
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source_repository = None
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add_cleanup(source_repository.lock_read().unlock)
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add_cleanup(source_branch.lock_read().unlock)
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return source_branch, source_repository
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def sprout(self, url, revision_id=None, force_new_repo=False,
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recurse='down', possible_transports=None,
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accelerator_tree=None, hardlink=False, stacked=False,
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source_branch=None, create_tree_if_local=True):
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"""Create a copy of this controldir prepared for use as a new line of
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If url's last component does not exist, it will be created.
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Attributes related to the identity of the source branch like
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branch nickname will be cleaned, a working tree is created
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whether one existed before or not; and a local branch is always
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if revision_id is not None, then the clone operation may tune
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itself to download less data.
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:param accelerator_tree: A tree which can be used for retrieving file
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contents more quickly than the revision tree, i.e. a workingtree.
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The revision tree will be used for cases where accelerator_tree's
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content is different.
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:param hardlink: If true, hard-link files from accelerator_tree,
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:param stacked: If true, create a stacked branch referring to the
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location of this control directory.
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:param create_tree_if_local: If true, a working-tree will be created
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when working locally.
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operation = cleanup.OperationWithCleanups(self._sprout)
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return operation.run(url, revision_id=revision_id,
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force_new_repo=force_new_repo, recurse=recurse,
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possible_transports=possible_transports,
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accelerator_tree=accelerator_tree, hardlink=hardlink,
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stacked=stacked, source_branch=source_branch,
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create_tree_if_local=create_tree_if_local)
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def _sprout(self, op, url, revision_id=None, force_new_repo=False,
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recurse='down', possible_transports=None,
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accelerator_tree=None, hardlink=False, stacked=False,
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source_branch=None, create_tree_if_local=True):
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add_cleanup = op.add_cleanup
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fetch_spec_factory = fetch.FetchSpecFactory()
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if revision_id is not None:
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fetch_spec_factory.add_revision_ids([revision_id])
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fetch_spec_factory.source_branch_stop_revision_id = revision_id
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if possible_transports is None:
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possible_transports = []
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possible_transports = list(possible_transports) + [
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target_transport = _mod_transport.get_transport(url,
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target_transport.ensure_base()
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cloning_format = self.cloning_metadir(stacked)
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# Create/update the result branch
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result = controldir.ControlDir.open_from_transport(target_transport)
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except errors.NotBranchError:
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result = cloning_format.initialize_on_transport(target_transport)
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source_branch, source_repository = self._find_source_repo(
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add_cleanup, source_branch)
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fetch_spec_factory.source_branch = source_branch
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# if a stacked branch wasn't requested, we don't create one
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# even if the origin was stacked
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if stacked and source_branch is not None:
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stacked_branch_url = self.root_transport.base
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stacked_branch_url = None
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repository_policy = result.determine_repository_policy(
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force_new_repo, stacked_branch_url, require_stacking=stacked)
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result_repo, is_new_repo = repository_policy.acquire_repository(
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possible_transports=possible_transports)
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add_cleanup(result_repo.lock_write().unlock)
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fetch_spec_factory.source_repo = source_repository
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fetch_spec_factory.target_repo = result_repo
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if stacked or (len(result_repo._fallback_repositories) != 0):
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target_repo_kind = fetch.TargetRepoKinds.STACKED
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target_repo_kind = fetch.TargetRepoKinds.EMPTY
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target_repo_kind = fetch.TargetRepoKinds.PREEXISTING
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fetch_spec_factory.target_repo_kind = target_repo_kind
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if source_repository is not None:
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fetch_spec = fetch_spec_factory.make_fetch_spec()
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result_repo.fetch(source_repository, fetch_spec=fetch_spec)
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if source_branch is None:
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# this is for sprouting a controldir without a branch; is that
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# Not especially, but it's part of the contract.
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result_branch = result.create_branch()
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result_branch = source_branch.sprout(result,
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revision_id=revision_id, repository_policy=repository_policy,
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repository=result_repo)
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mutter("created new branch %r" % (result_branch,))
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# Create/update the result working tree
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if (create_tree_if_local and not result.has_workingtree() and
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isinstance(target_transport, local.LocalTransport) and
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(result_repo is None or result_repo.make_working_trees())):
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wt = result.create_workingtree(accelerator_tree=accelerator_tree,
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hardlink=hardlink, from_branch=result_branch)
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if wt.path2id('') is None:
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wt.set_root_id(self.open_workingtree.get_root_id())
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except errors.NoWorkingTree:
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if recurse == 'down':
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basis = wt.basis_tree()
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elif result_branch is not None:
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basis = result_branch.basis_tree()
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elif source_branch is not None:
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basis = source_branch.basis_tree()
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if basis is not None:
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add_cleanup(basis.lock_read().unlock)
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subtrees = basis.iter_references()
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for path, file_id in subtrees:
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target = urlutils.join(url, urlutils.escape(path))
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sublocation = source_branch.reference_parent(file_id, path)
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sublocation.bzrdir.sprout(target,
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basis.get_reference_revision(file_id, path),
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force_new_repo=force_new_repo, recurse=recurse,
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@deprecated_method(deprecated_in((2, 3, 0)))
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def generate_backup_name(self, base):
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return self._available_backup_name(base)
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def _available_backup_name(self, base):
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"""Find a non-existing backup file name based on base.
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See bzrlib.osutils.available_backup_name about race conditions.
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return osutils.available_backup_name(base, self.root_transport.has)
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def backup_bzrdir(self):
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"""Backup this bzr control directory.
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:return: Tuple with old path name and new path name
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pb = ui.ui_factory.nested_progress_bar()
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old_path = self.root_transport.abspath('.bzr')
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backup_dir = self._available_backup_name('backup.bzr')
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new_path = self.root_transport.abspath(backup_dir)
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ui.ui_factory.note(gettext('making backup of {0}\n to {1}').format(
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urlutils.unescape_for_display(old_path, 'utf-8'),
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urlutils.unescape_for_display(new_path, 'utf-8')))
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self.root_transport.copy_tree('.bzr', backup_dir)
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return (old_path, new_path)
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def retire_bzrdir(self, limit=10000):
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"""Permanently disable the bzrdir.
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This is done by renaming it to give the user some ability to recover
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if there was a problem.
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This will have horrible consequences if anyone has anything locked or
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:param limit: number of times to retry
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to_path = '.bzr.retired.%d' % i
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self.root_transport.rename('.bzr', to_path)
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note(gettext("renamed {0} to {1}").format(
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self.root_transport.abspath('.bzr'), to_path))
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except (errors.TransportError, IOError, errors.PathError):
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def _find_containing(self, evaluate):
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"""Find something in a containing control directory.
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This method will scan containing control dirs, until it finds what
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it is looking for, decides that it will never find it, or runs out
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of containing control directories to check.
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It is used to implement find_repository and
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determine_repository_policy.
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:param evaluate: A function returning (value, stop). If stop is True,
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the value will be returned.
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result, stop = evaluate(found_bzrdir)
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next_transport = found_bzrdir.root_transport.clone('..')
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if (found_bzrdir.user_url == next_transport.base):
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# top of the file system
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# find the next containing bzrdir
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found_bzrdir = self.open_containing_from_transport(
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except errors.NotBranchError:
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def find_repository(self):
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"""Find the repository that should be used.
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This does not require a branch as we use it to find the repo for
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new branches as well as to hook existing branches up to their
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def usable_repository(found_bzrdir):
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# does it have a repository ?
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repository = found_bzrdir.open_repository()
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except errors.NoRepositoryPresent:
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if found_bzrdir.user_url == self.user_url:
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return repository, True
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elif repository.is_shared():
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return repository, True
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found_repo = self._find_containing(usable_repository)
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if found_repo is None:
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raise errors.NoRepositoryPresent(self)
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def _find_creation_modes(self):
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"""Determine the appropriate modes for files and directories.
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They're always set to be consistent with the base directory,
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assuming that this transport allows setting modes.
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# TODO: Do we need or want an option (maybe a config setting) to turn
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# this off or override it for particular locations? -- mbp 20080512
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if self._mode_check_done:
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self._mode_check_done = True
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st = self.transport.stat('.')
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except errors.TransportNotPossible:
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self._dir_mode = None
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self._file_mode = None
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# Check the directory mode, but also make sure the created
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# directories and files are read-write for this user. This is
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# mostly a workaround for filesystems which lie about being able to
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# write to a directory (cygwin & win32)
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if (st.st_mode & 07777 == 00000):
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# FTP allows stat but does not return dir/file modes
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self._dir_mode = None
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self._file_mode = None
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self._dir_mode = (st.st_mode & 07777) | 00700
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# Remove the sticky and execute bits for files
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self._file_mode = self._dir_mode & ~07111
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def _get_file_mode(self):
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"""Return Unix mode for newly created files, or None.
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if not self._mode_check_done:
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self._find_creation_modes()
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return self._file_mode
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def _get_dir_mode(self):
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"""Return Unix mode for newly created directories, or None.
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if not self._mode_check_done:
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self._find_creation_modes()
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return self._dir_mode
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def get_config(self):
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"""Get configuration for this BzrDir."""
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return config.BzrDirConfig(self)
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def _get_config(self):
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"""By default, no configuration is available."""
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def __init__(self, _transport, _format):
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"""Initialize a Bzr control dir object.
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Only really common logic should reside here, concrete classes should be
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made with varying behaviours.
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:param _format: the format that is creating this BzrDir instance.
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:param _transport: the transport this dir is based at.
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self._format = _format
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# these are also under the more standard names of
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# control_transport and user_transport
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self.transport = _transport.clone('.bzr')
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self.root_transport = _transport
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self._mode_check_done = False
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def user_transport(self):
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return self.root_transport
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def control_transport(self):
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return self.transport
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def is_control_filename(self, filename):
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"""True if filename is the name of a path which is reserved for bzrdir's.
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:param filename: A filename within the root transport of this bzrdir.
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This is true IF and ONLY IF the filename is part of the namespace reserved
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for bzr control dirs. Currently this is the '.bzr' directory in the root
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of the root_transport.
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# this might be better on the BzrDirFormat class because it refers to
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# all the possible bzrdir disk formats.
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# This method is tested via the workingtree is_control_filename tests-
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# it was extracted from WorkingTree.is_control_filename. If the method's
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# contract is extended beyond the current trivial implementation, please
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# add new tests for it to the appropriate place.
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return filename == '.bzr' or filename.startswith('.bzr/')
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def _cloning_metadir(self):
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"""Produce a metadir suitable for cloning with.
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:returns: (destination_bzrdir_format, source_repository)
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result_format = self._format.__class__()
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branch = self.open_branch(ignore_fallbacks=True)
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source_repository = branch.repository
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result_format._branch_format = branch._format
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except errors.NotBranchError:
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source_repository = self.open_repository()
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except errors.NoRepositoryPresent:
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source_repository = None
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# XXX TODO: This isinstance is here because we have not implemented
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# the fix recommended in bug # 103195 - to delegate this choice the
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repo_format = source_repository._format
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if isinstance(repo_format, remote.RemoteRepositoryFormat):
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source_repository._ensure_real()
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repo_format = source_repository._real_repository._format
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result_format.repository_format = repo_format
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# TODO: Couldn't we just probe for the format in these cases,
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# rather than opening the whole tree? It would be a little
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# faster. mbp 20070401
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tree = self.open_workingtree(recommend_upgrade=False)
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except (errors.NoWorkingTree, errors.NotLocalUrl):
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result_format.workingtree_format = None
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result_format.workingtree_format = tree._format.__class__()
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return result_format, source_repository
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def cloning_metadir(self, require_stacking=False):
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"""Produce a metadir suitable for cloning or sprouting with.
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These operations may produce workingtrees (yes, even though they're
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"cloning" something that doesn't have a tree), so a viable workingtree
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format must be selected.
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:require_stacking: If True, non-stackable formats will be upgraded
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to similar stackable formats.
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:returns: a ControlDirFormat with all component formats either set
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appropriately or set to None if that component should not be
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format, repository = self._cloning_metadir()
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if format._workingtree_format is None:
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if repository is None:
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# No repository either
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# We have a repository, so set a working tree? (Why? This seems to
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# contradict the stated return value in the docstring).
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tree_format = repository._format._matchingbzrdir.workingtree_format
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format.workingtree_format = tree_format.__class__()
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format.require_stacking()
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def get_branch_transport(self, branch_format, name=None):
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"""Get the transport for use by branch format in this BzrDir.
735
Note that bzr dirs that do not support format strings will raise
736
IncompatibleFormat if the branch format they are given has
737
a format string, and vice versa.
739
If branch_format is None, the transport is returned with no
740
checking. If it is not None, then the returned transport is
741
guaranteed to point to an existing directory ready for use.
743
raise NotImplementedError(self.get_branch_transport)
745
def get_repository_transport(self, repository_format):
746
"""Get the transport for use by repository format in this BzrDir.
748
Note that bzr dirs that do not support format strings will raise
749
IncompatibleFormat if the repository format they are given has
750
a format string, and vice versa.
752
If repository_format is None, the transport is returned with no
753
checking. If it is not None, then the returned transport is
754
guaranteed to point to an existing directory ready for use.
756
raise NotImplementedError(self.get_repository_transport)
758
def get_workingtree_transport(self, tree_format):
759
"""Get the transport for use by workingtree format in this BzrDir.
761
Note that bzr dirs that do not support format strings will raise
762
IncompatibleFormat if the workingtree format they are given has a
763
format string, and vice versa.
765
If workingtree_format is None, the transport is returned with no
766
checking. If it is not None, then the returned transport is
767
guaranteed to point to an existing directory ready for use.
769
raise NotImplementedError(self.get_workingtree_transport)
772
def create(cls, base, format=None, possible_transports=None):
773
"""Create a new BzrDir at the url 'base'.
775
:param format: If supplied, the format of branch to create. If not
776
supplied, the default is used.
777
:param possible_transports: If supplied, a list of transports that
778
can be reused to share a remote connection.
780
if cls is not BzrDir:
781
raise AssertionError("BzrDir.create always creates the "
782
"default format, not one of %r" % cls)
783
return controldir.ControlDir.create(base, format=format,
784
possible_transports=possible_transports)
787
return "<%s at %r>" % (self.__class__.__name__, self.user_url)
790
class BzrDirMeta1(BzrDir):
791
"""A .bzr meta version 1 control object.
793
This is the first control object where the
794
individual aspects are really split out: there are separate repository,
795
workingtree and branch subdirectories and any subset of the three can be
796
present within a BzrDir.
799
def can_convert_format(self):
800
"""See BzrDir.can_convert_format()."""
803
def create_branch(self, name=None, repository=None,
804
append_revisions_only=None):
805
"""See BzrDir.create_branch."""
807
name = self._get_selected_branch()
808
return self._format.get_branch_format().initialize(self, name=name,
809
repository=repository,
810
append_revisions_only=append_revisions_only)
812
def destroy_branch(self, name=None):
813
"""See BzrDir.create_branch."""
815
raise errors.NoColocatedBranchSupport(self)
816
self.transport.delete_tree('branch')
818
def create_repository(self, shared=False):
819
"""See BzrDir.create_repository."""
820
return self._format.repository_format.initialize(self, shared)
822
def destroy_repository(self):
823
"""See BzrDir.destroy_repository."""
825
self.transport.delete_tree('repository')
826
except errors.NoSuchFile:
827
raise errors.NoRepositoryPresent(self)
829
def create_workingtree(self, revision_id=None, from_branch=None,
830
accelerator_tree=None, hardlink=False):
831
"""See BzrDir.create_workingtree."""
832
return self._format.workingtree_format.initialize(
833
self, revision_id, from_branch=from_branch,
834
accelerator_tree=accelerator_tree, hardlink=hardlink)
836
def destroy_workingtree(self):
837
"""See BzrDir.destroy_workingtree."""
838
wt = self.open_workingtree(recommend_upgrade=False)
839
repository = wt.branch.repository
840
empty = repository.revision_tree(_mod_revision.NULL_REVISION)
841
# We ignore the conflicts returned by wt.revert since we're about to
842
# delete the wt metadata anyway, all that should be left here are
843
# detritus. But see bug #634470 about subtree .bzr dirs.
844
conflicts = wt.revert(old_tree=empty)
845
self.destroy_workingtree_metadata()
847
def destroy_workingtree_metadata(self):
848
self.transport.delete_tree('checkout')
850
def find_branch_format(self, name=None):
851
"""Find the branch 'format' for this bzrdir.
853
This might be a synthetic object for e.g. RemoteBranch and SVN.
855
from bzrlib.branch import BranchFormatMetadir
856
return BranchFormatMetadir.find_format(self, name=name)
858
def _get_mkdir_mode(self):
859
"""Figure out the mode to use when creating a bzrdir subdir."""
860
temp_control = lockable_files.LockableFiles(self.transport, '',
861
lockable_files.TransportLock)
862
return temp_control._dir_mode
864
def get_branch_reference(self, name=None):
865
"""See BzrDir.get_branch_reference()."""
866
from bzrlib.branch import BranchFormatMetadir
867
format = BranchFormatMetadir.find_format(self, name=name)
868
return format.get_reference(self, name=name)
870
def get_branch_transport(self, branch_format, name=None):
871
"""See BzrDir.get_branch_transport()."""
873
raise errors.NoColocatedBranchSupport(self)
874
# XXX: this shouldn't implicitly create the directory if it's just
875
# promising to get a transport -- mbp 20090727
876
if branch_format is None:
877
return self.transport.clone('branch')
879
branch_format.get_format_string()
880
except NotImplementedError:
881
raise errors.IncompatibleFormat(branch_format, self._format)
883
self.transport.mkdir('branch', mode=self._get_mkdir_mode())
884
except errors.FileExists:
886
return self.transport.clone('branch')
888
def get_repository_transport(self, repository_format):
889
"""See BzrDir.get_repository_transport()."""
890
if repository_format is None:
891
return self.transport.clone('repository')
893
repository_format.get_format_string()
894
except NotImplementedError:
895
raise errors.IncompatibleFormat(repository_format, self._format)
897
self.transport.mkdir('repository', mode=self._get_mkdir_mode())
898
except errors.FileExists:
900
return self.transport.clone('repository')
902
def get_workingtree_transport(self, workingtree_format):
903
"""See BzrDir.get_workingtree_transport()."""
904
if workingtree_format is None:
905
return self.transport.clone('checkout')
907
workingtree_format.get_format_string()
908
except NotImplementedError:
909
raise errors.IncompatibleFormat(workingtree_format, self._format)
911
self.transport.mkdir('checkout', mode=self._get_mkdir_mode())
912
except errors.FileExists:
914
return self.transport.clone('checkout')
916
def has_workingtree(self):
917
"""Tell if this bzrdir contains a working tree.
919
Note: if you're going to open the working tree, you should just go
920
ahead and try, and not ask permission first.
922
from bzrlib.workingtree import WorkingTreeFormatMetaDir
924
WorkingTreeFormatMetaDir.find_format_string(self)
925
except errors.NoWorkingTree:
929
def needs_format_conversion(self, format):
930
"""See BzrDir.needs_format_conversion()."""
931
if (not isinstance(self._format, format.__class__) or
932
self._format.get_format_string() != format.get_format_string()):
933
# it is not a meta dir format, conversion is needed.
935
# we might want to push this down to the repository?
937
if not isinstance(self.open_repository()._format,
938
format.repository_format.__class__):
939
# the repository needs an upgrade.
941
except errors.NoRepositoryPresent:
943
for branch in self.list_branches():
944
if not isinstance(branch._format,
945
format.get_branch_format().__class__):
946
# the branch needs an upgrade.
949
my_wt = self.open_workingtree(recommend_upgrade=False)
950
if not isinstance(my_wt._format,
951
format.workingtree_format.__class__):
952
# the workingtree needs an upgrade.
954
except (errors.NoWorkingTree, errors.NotLocalUrl):
958
def open_branch(self, name=None, unsupported=False,
959
ignore_fallbacks=False, possible_transports=None):
960
"""See ControlDir.open_branch."""
962
name = self._get_selected_branch()
963
format = self.find_branch_format(name=name)
964
format.check_support_status(unsupported)
965
return format.open(self, name=name,
966
_found=True, ignore_fallbacks=ignore_fallbacks,
967
possible_transports=possible_transports)
969
def open_repository(self, unsupported=False):
970
"""See BzrDir.open_repository."""
971
from bzrlib.repository import RepositoryFormatMetaDir
972
format = RepositoryFormatMetaDir.find_format(self)
973
format.check_support_status(unsupported)
974
return format.open(self, _found=True)
976
def open_workingtree(self, unsupported=False,
977
recommend_upgrade=True):
978
"""See BzrDir.open_workingtree."""
979
from bzrlib.workingtree import WorkingTreeFormatMetaDir
980
format = WorkingTreeFormatMetaDir.find_format(self)
981
format.check_support_status(unsupported, recommend_upgrade,
982
basedir=self.root_transport.base)
983
return format.open(self, _found=True)
985
def _get_config(self):
986
return config.TransportConfig(self.transport, 'control.conf')
989
class BzrDirMeta1Colo(BzrDirMeta1):
990
"""BzrDirMeta1 with support for colocated branches.
992
This format is experimental, and will eventually be merged back into
996
def __init__(self, _transport, _format):
997
super(BzrDirMeta1Colo, self).__init__(_transport, _format)
998
self.control_files = lockable_files.LockableFiles(self.control_transport,
999
self._format._lock_file_name, self._format._lock_class)
1001
def _get_branch_path(self, name):
1002
"""Obtain the branch path to use.
1004
This uses the API specified branch name first, and then falls back to
1005
the branch name specified in the URL. If neither of those is specified,
1006
it uses the default branch.
1008
:param name: Optional branch name to use
1009
:return: Relative path to branch
1013
return urlutils.join('branches', name.encode("utf-8"))
1015
def _read_branch_list(self):
1016
"""Read the branch list.
1018
:return: List of utf-8 encoded branch names.
1021
f = self.control_transport.get('branch-list')
1022
except errors.NoSuchFile:
1028
ret.append(name.rstrip("\n"))
1033
def _write_branch_list(self, branches):
1034
"""Write out the branch list.
1036
:param branches: List of utf-8 branch names to write
1038
self.transport.put_bytes('branch-list',
1039
"".join([name+"\n" for name in branches]))
1041
def destroy_branch(self, name=None):
1042
"""See BzrDir.create_branch."""
1044
name = self._get_selected_branch()
1045
path = self._get_branch_path(name)
1046
if name is not None:
1047
self.control_files.lock_write()
1049
branches = self._read_branch_list()
1051
branches.remove(name.encode("utf-8"))
1053
raise errors.NotBranchError(name)
1054
self._write_branch_list(branches)
1056
self.control_files.unlock()
1057
self.transport.delete_tree(path)
1059
def get_branches(self):
1060
"""See ControlDir.get_branches."""
1063
ret[None] = self.open_branch()
1064
except (errors.NotBranchError, errors.NoRepositoryPresent):
1067
for name in self._read_branch_list():
1068
ret[name] = self.open_branch(name.decode('utf-8'))
1072
def get_branch_transport(self, branch_format, name=None):
1073
"""See BzrDir.get_branch_transport()."""
1074
path = self._get_branch_path(name)
1075
# XXX: this shouldn't implicitly create the directory if it's just
1076
# promising to get a transport -- mbp 20090727
1077
if branch_format is None:
1078
return self.transport.clone(path)
1080
branch_format.get_format_string()
1081
except NotImplementedError:
1082
raise errors.IncompatibleFormat(branch_format, self._format)
1083
if name is not None:
1085
self.transport.mkdir('branches', mode=self._get_mkdir_mode())
1086
except errors.FileExists:
1088
branches = self._read_branch_list()
1089
utf8_name = name.encode("utf-8")
1090
if not utf8_name in branches:
1091
self.control_files.lock_write()
1093
branches = self._read_branch_list()
1094
branches.append(utf8_name)
1095
self._write_branch_list(branches)
1097
self.control_files.unlock()
1099
self.transport.mkdir(path, mode=self._get_mkdir_mode())
1100
except errors.FileExists:
1102
return self.transport.clone(path)
1105
class BzrDirMetaComponentFormat(controldir.ControlComponentFormat):
1106
"""Base class for all formats of things living in metadirs.
1108
This class manages the format string that is stored in the 'format'
1109
or 'branch-format' file.
1111
All classes for (branch-, repository-, workingtree-) formats that
1112
live in meta directories and have their own 'format' file
1113
(i.e. different from .bzr/branch-format) derive from this class,
1114
as well as the relevant base class for their kind
1115
(BranchFormat, WorkingTreeFormat, RepositoryFormat).
1119
def get_format_string(cls):
1120
"""Return the ASCII format string that identifies this format."""
1121
raise NotImplementedError(cls.get_format_string)
1124
def from_string(cls, format_string):
1125
if format_string != cls.get_format_string():
1126
raise ValueError("Invalid format header %r" % format_string)
1130
def _find_format(klass, registry, kind, format_string):
1132
cls = registry.get(format_string)
1134
raise errors.UnknownFormatError(format=format_string, kind=kind)
1137
def network_name(self):
1138
"""A simple byte string uniquely identifying this format for RPC calls.
1140
Metadir branch formats use their format string.
1142
return self.get_format_string()
1144
def __eq__(self, other):
1145
return (self.__class__ is other.__class__)
1148
class BzrProber(controldir.Prober):
1149
"""Prober for formats that use a .bzr/ control directory."""
1151
formats = registry.FormatRegistry(controldir.network_format_registry)
1152
"""The known .bzr formats."""
1155
@deprecated_method(deprecated_in((2, 4, 0)))
1156
def register_bzrdir_format(klass, format):
1157
klass.formats.register(format.get_format_string(), format)
1160
@deprecated_method(deprecated_in((2, 4, 0)))
1161
def unregister_bzrdir_format(klass, format):
1162
klass.formats.remove(format.get_format_string())
1165
def probe_transport(klass, transport):
1166
"""Return the .bzrdir style format present in a directory."""
1168
format_string = transport.get_bytes(".bzr/branch-format")
1169
except errors.NoSuchFile:
1170
raise errors.NotBranchError(path=transport.base)
1172
cls = klass.formats.get(format_string)
1174
raise errors.UnknownFormatError(format=format_string, kind='bzrdir')
1175
return cls.from_string(format_string)
1178
def known_formats(cls):
1180
for name, format in cls.formats.iteritems():
1181
if callable(format):
1187
controldir.ControlDirFormat.register_prober(BzrProber)
1190
class RemoteBzrProber(controldir.Prober):
1191
"""Prober for remote servers that provide a Bazaar smart server."""
1194
def probe_transport(klass, transport):
1195
"""Return a RemoteBzrDirFormat object if it looks possible."""
1197
medium = transport.get_smart_medium()
1198
except (NotImplementedError, AttributeError,
1199
errors.TransportNotPossible, errors.NoSmartMedium,
1200
errors.SmartProtocolError):
1201
# no smart server, so not a branch for this format type.
1202
raise errors.NotBranchError(path=transport.base)
1204
# Decline to open it if the server doesn't support our required
1205
# version (3) so that the VFS-based transport will do it.
1206
if medium.should_probe():
1208
server_version = medium.protocol_version()
1209
except errors.SmartProtocolError:
1210
# Apparently there's no usable smart server there, even though
1211
# the medium supports the smart protocol.
1212
raise errors.NotBranchError(path=transport.base)
1213
if server_version != '2':
1214
raise errors.NotBranchError(path=transport.base)
1215
from bzrlib.remote import RemoteBzrDirFormat
1216
return RemoteBzrDirFormat()
1219
def known_formats(cls):
1220
from bzrlib.remote import RemoteBzrDirFormat
1221
return set([RemoteBzrDirFormat()])
1224
class BzrDirFormat(controldir.ControlDirFormat):
1225
"""ControlDirFormat base class for .bzr/ directories.
1227
Formats are placed in a dict by their format string for reference
1228
during bzrdir opening. These should be subclasses of BzrDirFormat
1231
Once a format is deprecated, just deprecate the initialize and open
1232
methods on the format class. Do not deprecate the object, as the
1233
object will be created every system load.
1236
_lock_file_name = 'branch-lock'
1238
# _lock_class must be set in subclasses to the lock type, typ.
1239
# TransportLock or LockDir
1242
def get_format_string(cls):
1243
"""Return the ASCII format string that identifies this format."""
1244
raise NotImplementedError(cls.get_format_string)
1246
def initialize_on_transport(self, transport):
1247
"""Initialize a new bzrdir in the base directory of a Transport."""
1249
# can we hand off the request to the smart server rather than using
1251
client_medium = transport.get_smart_medium()
1252
except errors.NoSmartMedium:
1253
return self._initialize_on_transport_vfs(transport)
1255
# Current RPC's only know how to create bzr metadir1 instances, so
1256
# we still delegate to vfs methods if the requested format is not a
1258
if type(self) != BzrDirMetaFormat1:
1259
return self._initialize_on_transport_vfs(transport)
1260
from bzrlib.remote import RemoteBzrDirFormat
1261
remote_format = RemoteBzrDirFormat()
1262
self._supply_sub_formats_to(remote_format)
1263
return remote_format.initialize_on_transport(transport)
1265
def initialize_on_transport_ex(self, transport, use_existing_dir=False,
1266
create_prefix=False, force_new_repo=False, stacked_on=None,
1267
stack_on_pwd=None, repo_format_name=None, make_working_trees=None,
1268
shared_repo=False, vfs_only=False):
1269
"""Create this format on transport.
1271
The directory to initialize will be created.
1273
:param force_new_repo: Do not use a shared repository for the target,
1274
even if one is available.
1275
:param create_prefix: Create any missing directories leading up to
1277
:param use_existing_dir: Use an existing directory if one exists.
1278
:param stacked_on: A url to stack any created branch on, None to follow
1279
any target stacking policy.
1280
:param stack_on_pwd: If stack_on is relative, the location it is
1282
:param repo_format_name: If non-None, a repository will be
1283
made-or-found. Should none be found, or if force_new_repo is True
1284
the repo_format_name is used to select the format of repository to
1286
:param make_working_trees: Control the setting of make_working_trees
1287
for a new shared repository when one is made. None to use whatever
1288
default the format has.
1289
:param shared_repo: Control whether made repositories are shared or
1291
:param vfs_only: If True do not attempt to use a smart server
1292
:return: repo, bzrdir, require_stacking, repository_policy. repo is
1293
None if none was created or found, bzrdir is always valid.
1294
require_stacking is the result of examining the stacked_on
1295
parameter and any stacking policy found for the target.
1298
# Try to hand off to a smart server
1300
client_medium = transport.get_smart_medium()
1301
except errors.NoSmartMedium:
1304
from bzrlib.remote import RemoteBzrDirFormat
1305
# TODO: lookup the local format from a server hint.
1306
remote_dir_format = RemoteBzrDirFormat()
1307
remote_dir_format._network_name = self.network_name()
1308
self._supply_sub_formats_to(remote_dir_format)
1309
return remote_dir_format.initialize_on_transport_ex(transport,
1310
use_existing_dir=use_existing_dir, create_prefix=create_prefix,
1311
force_new_repo=force_new_repo, stacked_on=stacked_on,
1312
stack_on_pwd=stack_on_pwd, repo_format_name=repo_format_name,
1313
make_working_trees=make_working_trees, shared_repo=shared_repo)
1314
# XXX: Refactor the create_prefix/no_create_prefix code into a
1315
# common helper function
1316
# The destination may not exist - if so make it according to policy.
1317
def make_directory(transport):
1318
transport.mkdir('.')
1320
def redirected(transport, e, redirection_notice):
1321
note(redirection_notice)
1322
return transport._redirected_to(e.source, e.target)
1324
transport = do_catching_redirections(make_directory, transport,
1326
except errors.FileExists:
1327
if not use_existing_dir:
1329
except errors.NoSuchFile:
1330
if not create_prefix:
1332
transport.create_prefix()
1334
require_stacking = (stacked_on is not None)
1335
# Now the target directory exists, but doesn't have a .bzr
1336
# directory. So we need to create it, along with any work to create
1337
# all of the dependent branches, etc.
1339
result = self.initialize_on_transport(transport)
1340
if repo_format_name:
1342
# use a custom format
1343
result._format.repository_format = \
1344
repository.network_format_registry.get(repo_format_name)
1345
except AttributeError:
1346
# The format didn't permit it to be set.
1348
# A repository is desired, either in-place or shared.
1349
repository_policy = result.determine_repository_policy(
1350
force_new_repo, stacked_on, stack_on_pwd,
1351
require_stacking=require_stacking)
1352
result_repo, is_new_repo = repository_policy.acquire_repository(
1353
make_working_trees, shared_repo)
1354
if not require_stacking and repository_policy._require_stacking:
1355
require_stacking = True
1356
result._format.require_stacking()
1357
result_repo.lock_write()
1360
repository_policy = None
1361
return result_repo, result, require_stacking, repository_policy
1363
def _initialize_on_transport_vfs(self, transport):
1364
"""Initialize a new bzrdir using VFS calls.
1366
:param transport: The transport to create the .bzr directory in.
1369
# Since we are creating a .bzr directory, inherit the
1370
# mode from the root directory
1371
temp_control = lockable_files.LockableFiles(transport,
1372
'', lockable_files.TransportLock)
1373
temp_control._transport.mkdir('.bzr',
1374
# FIXME: RBC 20060121 don't peek under
1376
mode=temp_control._dir_mode)
1377
if sys.platform == 'win32' and isinstance(transport, local.LocalTransport):
1378
win32utils.set_file_attr_hidden(transport._abspath('.bzr'))
1379
file_mode = temp_control._file_mode
1381
bzrdir_transport = transport.clone('.bzr')
1382
utf8_files = [('README',
1383
"This is a Bazaar control directory.\n"
1384
"Do not change any files in this directory.\n"
1385
"See http://bazaar.canonical.com/ for more information about Bazaar.\n"),
1386
('branch-format', self.get_format_string()),
1388
# NB: no need to escape relative paths that are url safe.
1389
control_files = lockable_files.LockableFiles(bzrdir_transport,
1390
self._lock_file_name, self._lock_class)
1391
control_files.create_lock()
1392
control_files.lock_write()
1394
for (filename, content) in utf8_files:
1395
bzrdir_transport.put_bytes(filename, content,
1398
control_files.unlock()
1399
return self.open(transport, _found=True)
1401
def open(self, transport, _found=False):
1402
"""Return an instance of this format for the dir transport points at.
1404
_found is a private parameter, do not use it.
1407
found_format = controldir.ControlDirFormat.find_format(transport)
1408
if not isinstance(found_format, self.__class__):
1409
raise AssertionError("%s was asked to open %s, but it seems to need "
1411
% (self, transport, found_format))
1412
# Allow subclasses - use the found format.
1413
self._supply_sub_formats_to(found_format)
1414
return found_format._open(transport)
1415
return self._open(transport)
1417
def _open(self, transport):
1418
"""Template method helper for opening BzrDirectories.
1420
This performs the actual open and any additional logic or parameter
1423
raise NotImplementedError(self._open)
1425
def _supply_sub_formats_to(self, other_format):
1426
"""Give other_format the same values for sub formats as this has.
1428
This method is expected to be used when parameterising a
1429
RemoteBzrDirFormat instance with the parameters from a
1430
BzrDirMetaFormat1 instance.
1432
:param other_format: other_format is a format which should be
1433
compatible with whatever sub formats are supported by self.
1437
def supports_transport(self, transport):
1438
# bzr formats can be opened over all known transports
1442
class BzrDirMetaFormat1(BzrDirFormat):
1443
"""Bzr meta control format 1
1445
This is the first format with split out working tree, branch and repository
1450
- Format 3 working trees [optional]
1451
- Format 5 branches [optional]
1452
- Format 7 repositories [optional]
1455
_lock_class = lockdir.LockDir
1457
fixed_components = False
1459
colocated_branches = False
1462
self._workingtree_format = None
1463
self._branch_format = None
1464
self._repository_format = None
1466
def __eq__(self, other):
1467
if other.__class__ is not self.__class__:
1469
if other.repository_format != self.repository_format:
1471
if other.workingtree_format != self.workingtree_format:
1475
def __ne__(self, other):
1476
return not self == other
1478
def get_branch_format(self):
1479
if self._branch_format is None:
1480
from bzrlib.branch import format_registry as branch_format_registry
1481
self._branch_format = branch_format_registry.get_default()
1482
return self._branch_format
1484
def set_branch_format(self, format):
1485
self._branch_format = format
1487
def require_stacking(self, stack_on=None, possible_transports=None,
1489
"""We have a request to stack, try to ensure the formats support it.
1491
:param stack_on: If supplied, it is the URL to a branch that we want to
1492
stack on. Check to see if that format supports stacking before
1495
# Stacking is desired. requested by the target, but does the place it
1496
# points at support stacking? If it doesn't then we should
1497
# not implicitly upgrade. We check this here.
1498
new_repo_format = None
1499
new_branch_format = None
1501
# a bit of state for get_target_branch so that we don't try to open it
1502
# 2 times, for both repo *and* branch
1503
target = [None, False, None] # target_branch, checked, upgrade anyway
1504
def get_target_branch():
1506
# We've checked, don't check again
1508
if stack_on is None:
1509
# No target format, that means we want to force upgrading
1510
target[:] = [None, True, True]
1513
target_dir = BzrDir.open(stack_on,
1514
possible_transports=possible_transports)
1515
except errors.NotBranchError:
1516
# Nothing there, don't change formats
1517
target[:] = [None, True, False]
1519
except errors.JailBreak:
1520
# JailBreak, JFDI and upgrade anyway
1521
target[:] = [None, True, True]
1524
target_branch = target_dir.open_branch()
1525
except errors.NotBranchError:
1526
# No branch, don't upgrade formats
1527
target[:] = [None, True, False]
1529
target[:] = [target_branch, True, False]
1532
if (not _skip_repo and
1533
not self.repository_format.supports_external_lookups):
1534
# We need to upgrade the Repository.
1535
target_branch, _, do_upgrade = get_target_branch()
1536
if target_branch is None:
1537
# We don't have a target branch, should we upgrade anyway?
1539
# stack_on is inaccessible, JFDI.
1540
# TODO: bad monkey, hard-coded formats...
1541
if self.repository_format.rich_root_data:
1542
new_repo_format = knitpack_repo.RepositoryFormatKnitPack5RichRoot()
1544
new_repo_format = knitpack_repo.RepositoryFormatKnitPack5()
1546
# If the target already supports stacking, then we know the
1547
# project is already able to use stacking, so auto-upgrade
1549
new_repo_format = target_branch.repository._format
1550
if not new_repo_format.supports_external_lookups:
1551
# target doesn't, source doesn't, so don't auto upgrade
1553
new_repo_format = None
1554
if new_repo_format is not None:
1555
self.repository_format = new_repo_format
1556
note(gettext('Source repository format does not support stacking,'
1557
' using format:\n %s'),
1558
new_repo_format.get_format_description())
1560
if not self.get_branch_format().supports_stacking():
1561
# We just checked the repo, now lets check if we need to
1562
# upgrade the branch format
1563
target_branch, _, do_upgrade = get_target_branch()
1564
if target_branch is None:
1566
# TODO: bad monkey, hard-coded formats...
1567
from bzrlib.branch import BzrBranchFormat7
1568
new_branch_format = BzrBranchFormat7()
1570
new_branch_format = target_branch._format
1571
if not new_branch_format.supports_stacking():
1572
new_branch_format = None
1573
if new_branch_format is not None:
1574
# Does support stacking, use its format.
1575
self.set_branch_format(new_branch_format)
1576
note(gettext('Source branch format does not support stacking,'
1577
' using format:\n %s'),
1578
new_branch_format.get_format_description())
1580
def get_converter(self, format=None):
1581
"""See BzrDirFormat.get_converter()."""
1583
format = BzrDirFormat.get_default_format()
1584
if (type(self) is BzrDirMetaFormat1 and
1585
type(format) is BzrDirMetaFormat1Colo):
1586
return ConvertMetaToColo(format)
1587
if (type(self) is BzrDirMetaFormat1Colo and
1588
type(format) is BzrDirMetaFormat1):
1589
return ConvertMetaRemoveColo(format)
1590
if not isinstance(self, format.__class__):
1591
# converting away from metadir is not implemented
1592
raise NotImplementedError(self.get_converter)
1593
return ConvertMetaToMeta(format)
1596
def get_format_string(cls):
1597
"""See BzrDirFormat.get_format_string()."""
1598
return "Bazaar-NG meta directory, format 1\n"
1600
def get_format_description(self):
1601
"""See BzrDirFormat.get_format_description()."""
1602
return "Meta directory format 1"
1605
def from_string(cls, format_string):
1606
if format_string != cls.get_format_string():
1607
raise ValueError("Invalid format string %r" % format_string)
1610
def network_name(self):
1611
return self.get_format_string()
1613
def _open(self, transport):
1614
"""See BzrDirFormat._open."""
1615
# Create a new format instance because otherwise initialisation of new
1616
# metadirs share the global default format object leading to alias
1618
format = BzrDirMetaFormat1()
1619
self._supply_sub_formats_to(format)
1620
return BzrDirMeta1(transport, format)
1622
def __return_repository_format(self):
1623
"""Circular import protection."""
1624
if self._repository_format:
1625
return self._repository_format
1626
from bzrlib.repository import format_registry
1627
return format_registry.get_default()
1629
def _set_repository_format(self, value):
1630
"""Allow changing the repository format for metadir formats."""
1631
self._repository_format = value
1633
repository_format = property(__return_repository_format,
1634
_set_repository_format)
1636
def _supply_sub_formats_to(self, other_format):
1637
"""Give other_format the same values for sub formats as this has.
1639
This method is expected to be used when parameterising a
1640
RemoteBzrDirFormat instance with the parameters from a
1641
BzrDirMetaFormat1 instance.
1643
:param other_format: other_format is a format which should be
1644
compatible with whatever sub formats are supported by self.
1647
if getattr(self, '_repository_format', None) is not None:
1648
other_format.repository_format = self.repository_format
1649
if self._branch_format is not None:
1650
other_format._branch_format = self._branch_format
1651
if self._workingtree_format is not None:
1652
other_format.workingtree_format = self.workingtree_format
1654
def __get_workingtree_format(self):
1655
if self._workingtree_format is None:
1656
from bzrlib.workingtree import (
1657
format_registry as wt_format_registry,
1659
self._workingtree_format = wt_format_registry.get_default()
1660
return self._workingtree_format
1662
def __set_workingtree_format(self, wt_format):
1663
self._workingtree_format = wt_format
1666
return "<%r>" % (self.__class__.__name__,)
1668
workingtree_format = property(__get_workingtree_format,
1669
__set_workingtree_format)
1672
# Register bzr formats
1673
BzrProber.formats.register(BzrDirMetaFormat1.get_format_string(),
1675
controldir.ControlDirFormat._default_format = BzrDirMetaFormat1()
1678
class BzrDirMetaFormat1Colo(BzrDirMetaFormat1):
1679
"""BzrDirMeta1 format with support for colocated branches."""
1681
colocated_branches = True
1684
def get_format_string(cls):
1685
"""See BzrDirFormat.get_format_string()."""
1686
return "Bazaar meta directory, format 1 (with colocated branches)\n"
1688
def get_format_description(self):
1689
"""See BzrDirFormat.get_format_description()."""
1690
return "Meta directory format 1 with support for colocated branches"
1692
def _open(self, transport):
1693
"""See BzrDirFormat._open."""
1694
# Create a new format instance because otherwise initialisation of new
1695
# metadirs share the global default format object leading to alias
1697
format = BzrDirMetaFormat1Colo()
1698
self._supply_sub_formats_to(format)
1699
return BzrDirMeta1Colo(transport, format)
1702
BzrProber.formats.register(BzrDirMetaFormat1Colo.get_format_string(),
1703
BzrDirMetaFormat1Colo)
1706
class ConvertMetaToMeta(controldir.Converter):
1707
"""Converts the components of metadirs."""
1709
def __init__(self, target_format):
1710
"""Create a metadir to metadir converter.
1712
:param target_format: The final metadir format that is desired.
1714
self.target_format = target_format
1716
def convert(self, to_convert, pb):
1717
"""See Converter.convert()."""
1718
self.bzrdir = to_convert
1719
self.pb = ui.ui_factory.nested_progress_bar()
1722
self.step('checking repository format')
1724
repo = self.bzrdir.open_repository()
1725
except errors.NoRepositoryPresent:
1728
if not isinstance(repo._format, self.target_format.repository_format.__class__):
1729
from bzrlib.repository import CopyConverter
1730
ui.ui_factory.note(gettext('starting repository conversion'))
1731
converter = CopyConverter(self.target_format.repository_format)
1732
converter.convert(repo, pb)
1733
for branch in self.bzrdir.list_branches():
1734
# TODO: conversions of Branch and Tree should be done by
1735
# InterXFormat lookups/some sort of registry.
1736
# Avoid circular imports
1737
old = branch._format.__class__
1738
new = self.target_format.get_branch_format().__class__
1740
if (old == _mod_branch.BzrBranchFormat5 and
1741
new in (_mod_branch.BzrBranchFormat6,
1742
_mod_branch.BzrBranchFormat7,
1743
_mod_branch.BzrBranchFormat8)):
1744
branch_converter = _mod_branch.Converter5to6()
1745
elif (old == _mod_branch.BzrBranchFormat6 and
1746
new in (_mod_branch.BzrBranchFormat7,
1747
_mod_branch.BzrBranchFormat8)):
1748
branch_converter = _mod_branch.Converter6to7()
1749
elif (old == _mod_branch.BzrBranchFormat7 and
1750
new is _mod_branch.BzrBranchFormat8):
1751
branch_converter = _mod_branch.Converter7to8()
1753
raise errors.BadConversionTarget("No converter", new,
1755
branch_converter.convert(branch)
1756
branch = self.bzrdir.open_branch()
1757
old = branch._format.__class__
1759
tree = self.bzrdir.open_workingtree(recommend_upgrade=False)
1760
except (errors.NoWorkingTree, errors.NotLocalUrl):
1763
# TODO: conversions of Branch and Tree should be done by
1764
# InterXFormat lookups
1765
if (isinstance(tree, workingtree_3.WorkingTree3) and
1766
not isinstance(tree, workingtree_4.DirStateWorkingTree) and
1767
isinstance(self.target_format.workingtree_format,
1768
workingtree_4.DirStateWorkingTreeFormat)):
1769
workingtree_4.Converter3to4().convert(tree)
1770
if (isinstance(tree, workingtree_4.DirStateWorkingTree) and
1771
not isinstance(tree, workingtree_4.WorkingTree5) and
1772
isinstance(self.target_format.workingtree_format,
1773
workingtree_4.WorkingTreeFormat5)):
1774
workingtree_4.Converter4to5().convert(tree)
1775
if (isinstance(tree, workingtree_4.DirStateWorkingTree) and
1776
not isinstance(tree, workingtree_4.WorkingTree6) and
1777
isinstance(self.target_format.workingtree_format,
1778
workingtree_4.WorkingTreeFormat6)):
1779
workingtree_4.Converter4or5to6().convert(tree)
1784
class ConvertMetaToColo(controldir.Converter):
1785
"""Add colocated branch support."""
1787
def __init__(self, target_format):
1788
"""Create a converter.that upgrades a metadir to the colo format.
1790
:param target_format: The final metadir format that is desired.
1792
self.target_format = target_format
1794
def convert(self, to_convert, pb):
1795
"""See Converter.convert()."""
1796
to_convert.transport.put_bytes('branch-format',
1797
self.target_format.get_format_string())
1798
return BzrDir.open_from_transport(to_convert.root_transport)
1801
class ConvertMetaRemoveColo(controldir.Converter):
1802
"""Remove colocated branch support from a bzrdir."""
1804
def __init__(self, target_format):
1805
"""Create a converter.that downgrades a colocated branch metadir
1806
to a regular metadir.
1808
:param target_format: The final metadir format that is desired.
1810
self.target_format = target_format
1812
def convert(self, to_convert, pb):
1813
"""See Converter.convert()."""
1814
to_convert.control_files.lock_write()
1816
branches = to_convert.list_branches()
1817
if len(branches) > 1:
1818
raise errors.BzrError("remove all but a single "
1819
"colocated branch when downgrading")
1821
to_convert.control_files.unlock()
1822
to_convert.transport.put_bytes('branch-format',
1823
self.target_format.get_format_string())
1824
return BzrDir.open_from_transport(to_convert.root_transport)
1827
controldir.ControlDirFormat.register_server_prober(RemoteBzrProber)
1830
class RepositoryAcquisitionPolicy(object):
1831
"""Abstract base class for repository acquisition policies.
1833
A repository acquisition policy decides how a BzrDir acquires a repository
1834
for a branch that is being created. The most basic policy decision is
1835
whether to create a new repository or use an existing one.
1837
def __init__(self, stack_on, stack_on_pwd, require_stacking):
1840
:param stack_on: A location to stack on
1841
:param stack_on_pwd: If stack_on is relative, the location it is
1843
:param require_stacking: If True, it is a failure to not stack.
1845
self._stack_on = stack_on
1846
self._stack_on_pwd = stack_on_pwd
1847
self._require_stacking = require_stacking
1849
def configure_branch(self, branch):
1850
"""Apply any configuration data from this policy to the branch.
1852
Default implementation sets repository stacking.
1854
if self._stack_on is None:
1856
if self._stack_on_pwd is None:
1857
stack_on = self._stack_on
1860
stack_on = urlutils.rebase_url(self._stack_on,
1863
except errors.InvalidRebaseURLs:
1864
stack_on = self._get_full_stack_on()
1866
branch.set_stacked_on_url(stack_on)
1867
except (errors.UnstackableBranchFormat,
1868
errors.UnstackableRepositoryFormat):
1869
if self._require_stacking:
1872
def requires_stacking(self):
1873
"""Return True if this policy requires stacking."""
1874
return self._stack_on is not None and self._require_stacking
1876
def _get_full_stack_on(self):
1877
"""Get a fully-qualified URL for the stack_on location."""
1878
if self._stack_on is None:
1880
if self._stack_on_pwd is None:
1881
return self._stack_on
1883
return urlutils.join(self._stack_on_pwd, self._stack_on)
1885
def _add_fallback(self, repository, possible_transports=None):
1886
"""Add a fallback to the supplied repository, if stacking is set."""
1887
stack_on = self._get_full_stack_on()
1888
if stack_on is None:
1891
stacked_dir = BzrDir.open(stack_on,
1892
possible_transports=possible_transports)
1893
except errors.JailBreak:
1894
# We keep the stacking details, but we are in the server code so
1895
# actually stacking is not needed.
1898
stacked_repo = stacked_dir.open_branch().repository
1899
except errors.NotBranchError:
1900
stacked_repo = stacked_dir.open_repository()
1902
repository.add_fallback_repository(stacked_repo)
1903
except errors.UnstackableRepositoryFormat:
1904
if self._require_stacking:
1907
self._require_stacking = True
1909
def acquire_repository(self, make_working_trees=None, shared=False,
1910
possible_transports=None):
1911
"""Acquire a repository for this bzrdir.
1913
Implementations may create a new repository or use a pre-exising
1916
:param make_working_trees: If creating a repository, set
1917
make_working_trees to this value (if non-None)
1918
:param shared: If creating a repository, make it shared if True
1919
:return: A repository, is_new_flag (True if the repository was
1922
raise NotImplemented(RepositoryAcquisitionPolicy.acquire_repository)
1925
class CreateRepository(RepositoryAcquisitionPolicy):
1926
"""A policy of creating a new repository"""
1928
def __init__(self, bzrdir, stack_on=None, stack_on_pwd=None,
1929
require_stacking=False):
1932
:param bzrdir: The bzrdir to create the repository on.
1933
:param stack_on: A location to stack on
1934
:param stack_on_pwd: If stack_on is relative, the location it is
1937
RepositoryAcquisitionPolicy.__init__(self, stack_on, stack_on_pwd,
1939
self._bzrdir = bzrdir
1941
def acquire_repository(self, make_working_trees=None, shared=False,
1942
possible_transports=None):
1943
"""Implementation of RepositoryAcquisitionPolicy.acquire_repository
1945
Creates the desired repository in the bzrdir we already have.
1947
if possible_transports is None:
1948
possible_transports = []
1950
possible_transports = list(possible_transports)
1951
possible_transports.append(self._bzrdir.root_transport)
1952
stack_on = self._get_full_stack_on()
1954
format = self._bzrdir._format
1955
format.require_stacking(stack_on=stack_on,
1956
possible_transports=possible_transports)
1957
if not self._require_stacking:
1958
# We have picked up automatic stacking somewhere.
1959
note(gettext('Using default stacking branch {0} at {1}').format(
1960
self._stack_on, self._stack_on_pwd))
1961
repository = self._bzrdir.create_repository(shared=shared)
1962
self._add_fallback(repository,
1963
possible_transports=possible_transports)
1964
if make_working_trees is not None:
1965
repository.set_make_working_trees(make_working_trees)
1966
return repository, True
1969
class UseExistingRepository(RepositoryAcquisitionPolicy):
1970
"""A policy of reusing an existing repository"""
1972
def __init__(self, repository, stack_on=None, stack_on_pwd=None,
1973
require_stacking=False):
1976
:param repository: The repository to use.
1977
:param stack_on: A location to stack on
1978
:param stack_on_pwd: If stack_on is relative, the location it is
1981
RepositoryAcquisitionPolicy.__init__(self, stack_on, stack_on_pwd,
1983
self._repository = repository
1985
def acquire_repository(self, make_working_trees=None, shared=False,
1986
possible_transports=None):
1987
"""Implementation of RepositoryAcquisitionPolicy.acquire_repository
1989
Returns an existing repository to use.
1991
if possible_transports is None:
1992
possible_transports = []
1994
possible_transports = list(possible_transports)
1995
possible_transports.append(self._repository.bzrdir.transport)
1996
self._add_fallback(self._repository,
1997
possible_transports=possible_transports)
1998
return self._repository, False
2001
def register_metadir(registry, key,
2002
repository_format, help, native=True, deprecated=False,
2007
alias=False, bzrdir_format=None):
2008
"""Register a metadir subformat.
2010
These all use a meta bzrdir, but can be parameterized by the
2011
Repository/Branch/WorkingTreeformats.
2013
:param repository_format: The fully-qualified repository format class
2015
:param branch_format: Fully-qualified branch format class name as
2017
:param tree_format: Fully-qualified tree format class name as
2020
if bzrdir_format is None:
2021
bzrdir_format = BzrDirMetaFormat1
2022
# This should be expanded to support setting WorkingTree and Branch
2023
# formats, once the API supports that.
2024
def _load(full_name):
2025
mod_name, factory_name = full_name.rsplit('.', 1)
2027
factory = pyutils.get_named_object(mod_name, factory_name)
2028
except ImportError, e:
2029
raise ImportError('failed to load %s: %s' % (full_name, e))
2030
except AttributeError:
2031
raise AttributeError('no factory %s in module %r'
2032
% (full_name, sys.modules[mod_name]))
2036
bd = bzrdir_format()
2037
if branch_format is not None:
2038
bd.set_branch_format(_load(branch_format))
2039
if tree_format is not None:
2040
bd.workingtree_format = _load(tree_format)
2041
if repository_format is not None:
2042
bd.repository_format = _load(repository_format)
2044
registry.register(key, helper, help, native, deprecated, hidden,
2045
experimental, alias)
2047
register_metadir(controldir.format_registry, 'knit',
2048
'bzrlib.repofmt.knitrepo.RepositoryFormatKnit1',
2049
'Format using knits. Recommended for interoperation with bzr <= 0.14.',
2050
branch_format='bzrlib.branch.BzrBranchFormat5',
2051
tree_format='bzrlib.workingtree_3.WorkingTreeFormat3',
2054
register_metadir(controldir.format_registry, 'dirstate',
2055
'bzrlib.repofmt.knitrepo.RepositoryFormatKnit1',
2056
help='Format using dirstate for working trees. '
2057
'Compatible with bzr 0.8 and '
2058
'above when accessed over the network. Introduced in bzr 0.15.',
2059
branch_format='bzrlib.branch.BzrBranchFormat5',
2060
tree_format='bzrlib.workingtree_4.WorkingTreeFormat4',
2063
register_metadir(controldir.format_registry, 'dirstate-tags',
2064
'bzrlib.repofmt.knitrepo.RepositoryFormatKnit1',
2065
help='Variant of dirstate with support for tags. '
2066
'Introduced in bzr 0.15.',
2067
branch_format='bzrlib.branch.BzrBranchFormat6',
2068
tree_format='bzrlib.workingtree_4.WorkingTreeFormat4',
2071
register_metadir(controldir.format_registry, 'rich-root',
2072
'bzrlib.repofmt.knitrepo.RepositoryFormatKnit4',
2073
help='Variant of dirstate with better handling of tree roots. '
2074
'Introduced in bzr 1.0',
2075
branch_format='bzrlib.branch.BzrBranchFormat6',
2076
tree_format='bzrlib.workingtree_4.WorkingTreeFormat4',
2079
register_metadir(controldir.format_registry, 'dirstate-with-subtree',
2080
'bzrlib.repofmt.knitrepo.RepositoryFormatKnit3',
2081
help='Variant of dirstate with support for nested trees. '
2082
'Introduced in 0.15.',
2083
branch_format='bzrlib.branch.BzrBranchFormat6',
2084
tree_format='bzrlib.workingtree_4.WorkingTreeFormat4',
2088
register_metadir(controldir.format_registry, 'pack-0.92',
2089
'bzrlib.repofmt.knitpack_repo.RepositoryFormatKnitPack1',
2090
help='Pack-based format used in 1.x series. Introduced in 0.92. '
2091
'Interoperates with bzr repositories before 0.92 but cannot be '
2092
'read by bzr < 0.92. '
2094
branch_format='bzrlib.branch.BzrBranchFormat6',
2095
tree_format='bzrlib.workingtree_4.WorkingTreeFormat4',
2098
register_metadir(controldir.format_registry, 'pack-0.92-subtree',
2099
'bzrlib.repofmt.knitpack_repo.RepositoryFormatKnitPack3',
2100
help='Pack-based format used in 1.x series, with subtree support. '
2101
'Introduced in 0.92. Interoperates with '
2102
'bzr repositories before 0.92 but cannot be read by bzr < 0.92. '
2104
branch_format='bzrlib.branch.BzrBranchFormat6',
2105
tree_format='bzrlib.workingtree_4.WorkingTreeFormat4',
2110
register_metadir(controldir.format_registry, 'rich-root-pack',
2111
'bzrlib.repofmt.knitpack_repo.RepositoryFormatKnitPack4',
2112
help='A variant of pack-0.92 that supports rich-root data '
2113
'(needed for bzr-svn and bzr-git). Introduced in 1.0.',
2114
branch_format='bzrlib.branch.BzrBranchFormat6',
2115
tree_format='bzrlib.workingtree_4.WorkingTreeFormat4',
2119
register_metadir(controldir.format_registry, '1.6',
2120
'bzrlib.repofmt.knitpack_repo.RepositoryFormatKnitPack5',
2121
help='A format that allows a branch to indicate that there is another '
2122
'(stacked) repository that should be used to access data that is '
2123
'not present locally.',
2124
branch_format='bzrlib.branch.BzrBranchFormat7',
2125
tree_format='bzrlib.workingtree_4.WorkingTreeFormat4',
2129
register_metadir(controldir.format_registry, '1.6.1-rich-root',
2130
'bzrlib.repofmt.knitpack_repo.RepositoryFormatKnitPack5RichRoot',
2131
help='A variant of 1.6 that supports rich-root data '
2132
'(needed for bzr-svn and bzr-git).',
2133
branch_format='bzrlib.branch.BzrBranchFormat7',
2134
tree_format='bzrlib.workingtree_4.WorkingTreeFormat4',
2138
register_metadir(controldir.format_registry, '1.9',
2139
'bzrlib.repofmt.knitpack_repo.RepositoryFormatKnitPack6',
2140
help='A repository format using B+tree indexes. These indexes '
2141
'are smaller in size, have smarter caching and provide faster '
2142
'performance for most operations.',
2143
branch_format='bzrlib.branch.BzrBranchFormat7',
2144
tree_format='bzrlib.workingtree_4.WorkingTreeFormat4',
2148
register_metadir(controldir.format_registry, '1.9-rich-root',
2149
'bzrlib.repofmt.knitpack_repo.RepositoryFormatKnitPack6RichRoot',
2150
help='A variant of 1.9 that supports rich-root data '
2151
'(needed for bzr-svn and bzr-git).',
2152
branch_format='bzrlib.branch.BzrBranchFormat7',
2153
tree_format='bzrlib.workingtree_4.WorkingTreeFormat4',
2157
register_metadir(controldir.format_registry, '1.14',
2158
'bzrlib.repofmt.knitpack_repo.RepositoryFormatKnitPack6',
2159
help='A working-tree format that supports content filtering.',
2160
branch_format='bzrlib.branch.BzrBranchFormat7',
2161
tree_format='bzrlib.workingtree_4.WorkingTreeFormat5',
2165
register_metadir(controldir.format_registry, '1.14-rich-root',
2166
'bzrlib.repofmt.knitpack_repo.RepositoryFormatKnitPack6RichRoot',
2167
help='A variant of 1.14 that supports rich-root data '
2168
'(needed for bzr-svn and bzr-git).',
2169
branch_format='bzrlib.branch.BzrBranchFormat7',
2170
tree_format='bzrlib.workingtree_4.WorkingTreeFormat5',
2174
# The following un-numbered 'development' formats should always just be aliases.
2175
register_metadir(controldir.format_registry, 'development-subtree',
2176
'bzrlib.repofmt.groupcompress_repo.RepositoryFormat2aSubtree',
2177
help='Current development format, subtree variant. Can convert data to and '
2178
'from pack-0.92-subtree (and anything compatible with '
2179
'pack-0.92-subtree) format repositories. Repositories and branches in '
2180
'this format can only be read by bzr.dev. Please read '
2181
'http://doc.bazaar.canonical.com/latest/developers/development-repo.html '
2183
branch_format='bzrlib.branch.BzrBranchFormat7',
2184
tree_format='bzrlib.workingtree_4.WorkingTreeFormat6',
2187
alias=False, # Restore to being an alias when an actual development subtree format is added
2188
# This current non-alias status is simply because we did not introduce a
2189
# chk based subtree format.
2191
register_metadir(controldir.format_registry, 'development5-subtree',
2192
'bzrlib.repofmt.knitpack_repo.RepositoryFormatPackDevelopment2Subtree',
2193
help='Development format, subtree variant. Can convert data to and '
2194
'from pack-0.92-subtree (and anything compatible with '
2195
'pack-0.92-subtree) format repositories. Repositories and branches in '
2196
'this format can only be read by bzr.dev. Please read '
2197
'http://doc.bazaar.canonical.com/latest/developers/development-repo.html '
2199
branch_format='bzrlib.branch.BzrBranchFormat7',
2200
tree_format='bzrlib.workingtree_4.WorkingTreeFormat6',
2206
register_metadir(controldir.format_registry, 'development-colo',
2207
'bzrlib.repofmt.groupcompress_repo.RepositoryFormat2a',
2208
help='The 2a format with experimental support for colocated branches.\n',
2209
branch_format='bzrlib.branch.BzrBranchFormat7',
2210
tree_format='bzrlib.workingtree_4.WorkingTreeFormat6',
2212
bzrdir_format=BzrDirMetaFormat1Colo,
2216
# And the development formats above will have aliased one of the following:
2218
# Finally, the current format.
2219
register_metadir(controldir.format_registry, '2a',
2220
'bzrlib.repofmt.groupcompress_repo.RepositoryFormat2a',
2221
help='Format for the bzr 2.0 series.\n'
2222
'Uses group-compress storage.\n'
2223
'Provides rich roots which are a one-way transition.\n',
2224
# 'storage in packs, 255-way hashed CHK inventory, bencode revision, group compress, '
2225
# 'rich roots. Supported by bzr 1.16 and later.',
2226
branch_format='bzrlib.branch.BzrBranchFormat7',
2227
tree_format='bzrlib.workingtree_4.WorkingTreeFormat6',
2231
# The following format should be an alias for the rich root equivalent
2232
# of the default format
2233
register_metadir(controldir.format_registry, 'default-rich-root',
2234
'bzrlib.repofmt.groupcompress_repo.RepositoryFormat2a',
2235
branch_format='bzrlib.branch.BzrBranchFormat7',
2236
tree_format='bzrlib.workingtree_4.WorkingTreeFormat6',
2241
# The current format that is made on 'bzr init'.
2242
format_name = config.GlobalStack().get('default_format')
2243
controldir.format_registry.set_default(format_name)
2245
# XXX 2010-08-20 JRV: There is still a lot of code relying on
2246
# bzrlib.bzrdir.format_registry existing. When BzrDir.create/BzrDir.open/etc
2247
# get changed to ControlDir.create/ControlDir.open/etc this should be removed.
2248
format_registry = controldir.format_registry
added
removed
bzrlib/bzrdir.py
