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# Copyright (C) 2005-2010 Canonical Ltd
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# Copyright (C) 2005, 2006, 2007, 2008, 2009 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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from bzrlib.testament import Testament
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from bzrlib.decorators import needs_read_lock, needs_write_lock, only_raises
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from bzrlib.decorators import needs_read_lock, needs_write_lock
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from bzrlib.inter import InterObject
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from bzrlib.inventory import (
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from bzrlib.lock import _RelockDebugMixin
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from bzrlib import registry
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from bzrlib.trace import (
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log_exception_quietly, note, mutter, mutter_callsite, warning)
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# an inventory delta was accumulated without creating a new
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basis_id = self.basis_delta_revision
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# We ignore the 'inventory' returned by add_inventory_by_delta
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# because self.new_inventory is used to hint to the rest of the
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# system what code path was taken
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self.inv_sha1, _ = self.repository.add_inventory_by_delta(
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self.inv_sha1 = self.repository.add_inventory_by_delta(
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basis_id, self._basis_delta, self._new_revision_id,
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if content_summary[2] is None:
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raise ValueError("Files must not have executable = None")
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# We can't trust a check of the file length because of content
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if (# if the exec bit has changed we have to store:
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if (# if the file length changed we have to store:
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parent_entry.text_size != content_summary[1] or
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# if the exec bit has changed we have to store:
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parent_entry.executable != content_summary[2]):
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elif parent_entry.text_sha1 == content_summary[3]:
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ie.revision = parent_entry.revision
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return self._get_delta(ie, basis_inv, path), False, None
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ie.reference_revision = content_summary[3]
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if ie.reference_revision is None:
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raise AssertionError("invalid content_summary for nested tree: %r"
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% (content_summary,))
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self._add_text_to_weave(ie.file_id, '', heads, None)
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raise NotImplementedError('unknown kind')
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# versioned roots do not change unless the tree found a change.
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class RepositoryWriteLockResult(object):
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"""The result of write locking a repository.
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:ivar repository_token: The token obtained from the underlying lock, or
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:ivar unlock: A callable which will unlock the lock.
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def __init__(self, unlock, repository_token):
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self.repository_token = repository_token
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######################################################################
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class Repository(_RelockDebugMixin, bzrdir.ControlComponent):
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class Repository(object):
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"""Repository holding history for one or more branches.
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The repository holds and retrieves historical information including
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:seealso: add_inventory, for the contract.
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inv_lines = self._serializer.write_inventory_to_lines(inv)
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inv_lines = self._serialise_inventory_to_lines(inv)
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return self._inventory_add_lines(revision_id, parents,
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inv_lines, check_content=False)
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for record in getattr(self, kind).check(keys=keys[kind]):
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if record.storage_kind == 'absent':
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checker._report_items.append(
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'Missing %s {%s}' % (kind, record.key,))
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'Missing inventory {%s}' % (record.key,))
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last_object = self._check_record(kind, record,
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checker, last_object, current_keys[(kind,) + record.key])
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"""Check a single text from this repository."""
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if kind == 'inventories':
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rev_id = record.key[0]
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inv = self._deserialise_inventory(rev_id,
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inv = self.deserialise_inventory(rev_id,
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record.get_bytes_as('fulltext'))
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if last_object is not None:
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delta = inv._make_delta(last_object)
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:param _format: The format of the repository on disk.
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:param a_bzrdir: The BzrDir of the repository.
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In the future we will have a single api for all stores for
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getting file texts, inventories and revisions, then
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this construct will accept instances of those things.
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# In the future we will have a single api for all stores for
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# getting file texts, inventories and revisions, then
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# this construct will accept instances of those things.
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super(Repository, self).__init__()
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self._format = _format
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# the following are part of the public API for Repository:
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self._reconcile_does_inventory_gc = True
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self._reconcile_fixes_text_parents = False
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self._reconcile_backsup_inventory = True
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# not right yet - should be more semantically clear ?
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# TODO: make sure to construct the right store classes, etc, depending
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# on whether escaping is required.
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self._warn_if_deprecated()
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self._write_group = None
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# Additional places to query for data.
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self._fallback_repositories = []
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# An InventoryEntry cache, used during deserialization
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self._inventory_entry_cache = fifo_cache.FIFOCache(10*1024)
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# Is it safe to return inventory entries directly from the entry cache,
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# rather copying them?
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self._safe_to_return_from_cache = False
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def user_transport(self):
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return self.bzrdir.user_transport
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def control_transport(self):
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return self._transport
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def __repr__(self):
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if self._fallback_repositories:
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data during reads, and allows a 'write_group' to be obtained. Write
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groups must be used for actual data insertion.
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A token should be passed in if you know that you have locked the object
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some other way, and need to synchronise this object's state with that
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XXX: this docstring is duplicated in many places, e.g. lockable_files.py
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:param token: if this is already locked, then lock_write will fail
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unless the token matches the existing lock.
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:returns: a token if this instance supports tokens, otherwise None.
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:raises MismatchedToken: if the specified token doesn't match the token
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of the existing lock.
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:seealso: start_write_group.
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:return: A RepositoryWriteLockResult.
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A token should be passed in if you know that you have locked the object
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some other way, and need to synchronise this object's state with that
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XXX: this docstring is duplicated in many places, e.g. lockable_files.py
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locked = self.is_locked()
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token = self.control_files.lock_write(token=token)
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result = self.control_files.lock_write(token=token)
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self._warn_if_deprecated()
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self._note_lock('w')
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for repo in self._fallback_repositories:
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# Writes don't affect fallback repos
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repo.lock_read()
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self._refresh_data()
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return RepositoryWriteLockResult(self.unlock, token)
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def lock_read(self):
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"""Lock the repository for read operations.
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:return: An object with an unlock method which will release the lock
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locked = self.is_locked()
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self.control_files.lock_read()
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self._warn_if_deprecated()
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self._note_lock('r')
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for repo in self._fallback_repositories:
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repo.lock_read()
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self._refresh_data()
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def get_physical_lock_status(self):
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return self.control_files.get_physical_lock_status()
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# now gather global repository information
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# XXX: This is available for many repos regardless of listability.
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if self.user_transport.listable():
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if self.bzrdir.root_transport.listable():
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# XXX: do we want to __define len__() ?
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# Maybe the versionedfiles object should provide a different
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# method to get the number of keys.
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:param using: If True, list only branches using this repository.
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if using and not self.is_shared():
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return self.bzrdir.list_branches()
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return [self.bzrdir.open_branch()]
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except errors.NotBranchError:
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class Evaluator(object):
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def __init__(self):
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except errors.NoRepositoryPresent:
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return False, ([], repository)
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return False, (None, repository)
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self.first_call = False
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value = (bzrdir.list_branches(), None)
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value = (bzrdir.open_branch(), None)
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except errors.NotBranchError:
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value = (None, None)
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return True, value
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for branches, repository in bzrdir.BzrDir.find_bzrdirs(
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self.user_transport, evaluate=Evaluator()):
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if branches is not None:
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ret.extend(branches)
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for branch, repository in bzrdir.BzrDir.find_bzrdirs(
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self.bzrdir.root_transport, evaluate=Evaluator()):
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if branch is not None:
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branches.append(branch)
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if not using and repository is not None:
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ret.extend(repository.find_branches())
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branches.extend(repository.find_branches())
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@needs_read_lock
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def search_missing_revision_ids(self, other, revision_id=None, find_ghosts=True):
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# but at the moment we're only checking for texts referenced by
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# inventories at the graph's edge.
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key_deps = self.revisions._index._key_dependencies
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key_deps.satisfy_refs_for_keys(present_inventories)
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key_deps.add_keys(present_inventories)
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referrers = frozenset(r[0] for r in key_deps.get_referrers())
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file_ids = self.fileids_altered_by_revision_ids(referrers)
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missing_texts = set()
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rev = self._serializer.read_revision_from_string(text)
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yield (revid, rev)
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def get_revision_xml(self, revision_id):
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# TODO: jam 20070210 This shouldn't be necessary since get_revision
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# would have already do it.
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# TODO: jam 20070210 Just use _serializer.write_revision_to_string()
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# TODO: this can't just be replaced by:
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# return self._serializer.write_revision_to_string(
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# self.get_revision(revision_id))
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# as cStringIO preservers the encoding unlike write_revision_to_string
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# or some other call down the path.
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rev = self.get_revision(revision_id)
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rev_tmp = cStringIO.StringIO()
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# the current serializer..
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self._serializer.write_revision(rev, rev_tmp)
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return rev_tmp.getvalue()
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def get_deltas_for_revisions(self, revisions, specific_fileids=None):
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"""Produce a generator of revision deltas.
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selected_keys = set((revid,) for revid in revision_ids)
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w = _inv_weave or self.inventories
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return self._find_file_ids_from_xml_inventory_lines(
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w.iter_lines_added_or_present_in_keys(
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selected_keys, pb=None),
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pb = ui.ui_factory.nested_progress_bar()
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return self._find_file_ids_from_xml_inventory_lines(
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w.iter_lines_added_or_present_in_keys(
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selected_keys, pb=pb),
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def iter_files_bytes(self, desired_files):
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"""Iterate through file versions.
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num_file_ids = len(file_ids)
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for file_id, altered_versions in file_ids.iteritems():
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if pb is not None:
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pb.update("Fetch texts", count, num_file_ids)
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pb.update("fetch texts", count, num_file_ids)
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yield ("file", file_id, altered_versions)
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"""single-document based inventory iteration."""
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inv_xmls = self._iter_inventory_xmls(revision_ids, ordering)
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for text, revision_id in inv_xmls:
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yield self._deserialise_inventory(revision_id, text)
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yield self.deserialise_inventory(revision_id, text)
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def _iter_inventory_xmls(self, revision_ids, ordering):
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if ordering is None:
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next_key = None
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def _deserialise_inventory(self, revision_id, xml):
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def deserialise_inventory(self, revision_id, xml):
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"""Transform the xml into an inventory object.
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:param revision_id: The expected revision id of the inventory.
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:param xml: A serialised inventory.
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result = self._serializer.read_inventory_from_string(xml, revision_id,
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entry_cache=self._inventory_entry_cache,
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return_from_cache=self._safe_to_return_from_cache)
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entry_cache=self._inventory_entry_cache)
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if result.revision_id != revision_id:
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raise AssertionError('revision id mismatch %s != %s' % (
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result.revision_id, revision_id))
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def serialise_inventory(self, inv):
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return self._serializer.write_inventory_to_string(inv)
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def _serialise_inventory_to_lines(self, inv):
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return self._serializer.write_inventory_to_lines(inv)
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def get_serializer_format(self):
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return self._serializer.format_num
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@needs_read_lock
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def _get_inventory_xml(self, revision_id):
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"""Get serialized inventory as a string."""
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def get_inventory_xml(self, revision_id):
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"""Get inventory XML as a file object."""
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texts = self._iter_inventory_xmls([revision_id], 'unordered')
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text, revision_id = texts.next()
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raise errors.HistoryMissing(self, 'inventory', revision_id)
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def get_inventory_sha1(self, revision_id):
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"""Return the sha1 hash of the inventory entry
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return self.get_revision(revision_id).inventory_sha1
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def get_rev_id_for_revno(self, revno, known_pair):
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"""Return the revision id of a revno, given a later (revno, revid)
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pair in the same history.
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next_id = parents[0]
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def get_revision_inventory(self, revision_id):
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"""Return inventory of a past revision."""
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# TODO: Unify this with get_inventory()
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# bzr 0.0.6 and later imposes the constraint that the inventory_id
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# must be the same as its revision, so this is trivial.
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if revision_id is None:
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# This does not make sense: if there is no revision,
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# then it is the current tree inventory surely ?!
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# and thus get_root_id() is something that looks at the last
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# commit on the branch, and the get_root_id is an inventory check.
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raise NotImplementedError
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# return Inventory(self.get_root_id())
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return self.get_inventory(revision_id)
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def is_shared(self):
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"""Return True if this repository is flagged as a shared repository."""
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raise NotImplementedError(self.is_shared)
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return RevisionTree(self, Inventory(root_id=None),
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_mod_revision.NULL_REVISION)
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inv = self.get_inventory(revision_id)
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inv = self.get_revision_inventory(revision_id)
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return RevisionTree(self, inv, revision_id)
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def revision_trees(self, revision_ids):
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keys = tsort.topo_sort(parent_map)
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return [None] + list(keys)
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def pack(self, hint=None, clean_obsolete_packs=False):
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def pack(self, hint=None):
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"""Compress the data within the repository.
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This operation only makes sense for some repository types. For other
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obtained from the result of commit_write_group(). Out of
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date hints are simply ignored, because concurrent operations
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can obsolete them rapidly.
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:param clean_obsolete_packs: Clean obsolete packs immediately after
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def get_transaction(self):
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for ((revision_id,), parent_keys) in \
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self.revisions.get_parent_map(query_keys).iteritems():
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if parent_keys:
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result[revision_id] = tuple([parent_revid
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for (parent_revid,) in parent_keys])
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result[revision_id] = tuple(parent_revid
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for (parent_revid,) in parent_keys)
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result[revision_id] = (_mod_revision.NULL_REVISION,)
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def _make_parents_provider(self):
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def get_known_graph_ancestry(self, revision_ids):
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"""Return the known graph for a set of revision ids and their ancestors.
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st = static_tuple.StaticTuple
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revision_keys = [st(r_id).intern() for r_id in revision_ids]
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known_graph = self.revisions.get_known_graph_ancestry(revision_keys)
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return graph.GraphThunkIdsToKeys(known_graph)
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def get_graph(self, other_repository=None):
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"""Return the graph walker for this repository format"""
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parents_provider = self._make_parents_provider()
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result.check(callback_refs)
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def _warn_if_deprecated(self, branch=None):
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def _warn_if_deprecated(self):
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global _deprecation_warning_done
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if _deprecation_warning_done:
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conf = config.GlobalConfig()
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conf = branch.get_config()
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if conf.suppress_warning('format_deprecation'):
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warning("Format %s for %s is deprecated -"
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" please use 'bzr upgrade' to get better performance"
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% (self._format, self.bzrdir.transport.base))
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_deprecation_warning_done = True
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_deprecation_warning_done = True
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warning("Format %s for %s is deprecated - please use 'bzr upgrade' to get better performance"
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% (self._format, self.bzrdir.transport.base))
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def supports_rich_root(self):
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return self._format.rich_root_data
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pack_compresses = False
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# Does the repository inventory storage understand references to trees?
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supports_tree_reference = None
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# Is the format experimental ?
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experimental = False
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return "%s()" % self.__class__.__name__
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return "<%s>" % self.__class__.__name__
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def __eq__(self, other):
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# format objects are generally stateless
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transport = a_bzrdir.get_repository_transport(None)
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format_string = transport.get_bytes("format")
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format_string = transport.get("format").read()
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return format_registry.get(format_string)
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except errors.NoSuchFile:
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raise errors.NoRepositoryPresent(a_bzrdir)
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raise NotImplementedError(self.open)
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def _run_post_repo_init_hooks(self, repository, a_bzrdir, shared):
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from bzrlib.bzrdir import BzrDir, RepoInitHookParams
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hooks = BzrDir.hooks['post_repo_init']
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params = RepoInitHookParams(repository, self, a_bzrdir, shared)
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class MetaDirRepositoryFormat(RepositoryFormat):
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"""Common base class for the new repositories using the metadir layout."""
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:param revision_id: if None all content is copied, if NULL_REVISION no
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content is copied.
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:param pb: optional progress bar to use for progress reports. If not
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provided a default one will be created.
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ui.ui_factory.warn_experimental_format_fetch(self)
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from bzrlib.fetch import RepoFetcher
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# See <https://launchpad.net/bugs/456077> asking for a warning here
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if self.source._format.network_name() != self.target._format.network_name():
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ui.ui_factory.show_user_warning('cross_format_fetch',
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from_format=self.source._format,
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to_format=self.target._format)
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f = RepoFetcher(to_repository=self.target,
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from_repository=self.source,
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last_revision=revision_id,
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fetch_spec=fetch_spec,
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find_ghosts=find_ghosts)
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pb=pb, find_ghosts=find_ghosts)
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def _walk_to_common_revisions(self, revision_ids):
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"""Walk out from revision_ids in source to revisions target has.
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self.target.texts.insert_record_stream(
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self.source.texts.get_record_stream(
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self.source.texts.keys(), 'topological', False))
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pb.update('Copying inventory', 0, 1)
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pb.update('copying inventory', 0, 1)
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self.target.inventories.insert_record_stream(
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self.source.inventories.get_record_stream(
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self.source.inventories.keys(), 'topological', False))
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basis_id, delta, current_revision_id, parents_parents)
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cache[current_revision_id] = parent_tree
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def _fetch_batch(self, revision_ids, basis_id, cache, a_graph=None):
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def _fetch_batch(self, revision_ids, basis_id, cache):
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"""Fetch across a few revisions.
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:param revision_ids: The revisions to copy
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:param basis_id: The revision_id of a tree that must be in cache, used
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as a basis for delta when no other base is available
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:param cache: A cache of RevisionTrees that we can use.
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:param a_graph: A Graph object to determine the heads() of the
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rich-root data stream.
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:return: The revision_id of the last converted tree. The RevisionTree
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for it will be in cache
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pending_revisions = []
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parent_map = self.source.get_parent_map(revision_ids)
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self._fetch_parent_invs_for_stacking(parent_map, cache)
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self.source._safe_to_return_from_cache = True
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for tree in self.source.revision_trees(revision_ids):
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# Find a inventory delta for this revision.
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# Find text entries that need to be copied, too.
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possible_trees.append((basis_id, cache[basis_id]))
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basis_id, delta = self._get_delta_for_revision(tree, parent_ids,
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possible_trees)
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revision = self.source.get_revision(current_revision_id)
3872
pending_deltas.append((basis_id, delta,
3873
current_revision_id, revision.parent_ids))
3874
3844
if self._converting_to_rich_root:
3875
3845
self._revision_id_to_root_id[current_revision_id] = \
3876
3846
tree.get_root_id()
3905
3875
if entry.revision == file_revision:
3906
3876
texts_possibly_new_in_tree.remove(file_key)
3907
3877
text_keys.update(texts_possibly_new_in_tree)
3878
revision = self.source.get_revision(current_revision_id)
3879
pending_deltas.append((basis_id, delta,
3880
current_revision_id, revision.parent_ids))
3908
3881
pending_revisions.append(revision)
3909
3882
cache[current_revision_id] = tree
3910
3883
basis_id = current_revision_id
3911
self.source._safe_to_return_from_cache = False
3912
3884
# Copy file texts
3913
3885
from_texts = self.source.texts
3914
3886
to_texts = self.target.texts
3915
3887
if root_keys_to_create:
3916
root_stream = _mod_fetch._new_root_data_stream(
3888
from bzrlib.fetch import _new_root_data_stream
3889
root_stream = _new_root_data_stream(
3917
3890
root_keys_to_create, self._revision_id_to_root_id, parent_map,
3918
self.source, graph=a_graph)
3919
3892
to_texts.insert_record_stream(root_stream)
3920
3893
to_texts.insert_record_stream(from_texts.get_record_stream(
3921
3894
text_keys, self.target._format._fetch_order,
3978
3951
cache[basis_id] = basis_tree
3979
3952
del basis_tree # We don't want to hang on to it here
3981
if self._converting_to_rich_root and len(revision_ids) > 100:
3982
a_graph = _mod_fetch._get_rich_root_heads_graph(self.source,
3987
3954
for offset in range(0, len(revision_ids), batch_size):
3988
3955
self.target.start_write_group()
3990
3957
pb.update('Transferring revisions', offset,
3991
3958
len(revision_ids))
3992
3959
batch = revision_ids[offset:offset+batch_size]
3993
basis_id = self._fetch_batch(batch, basis_id, cache,
3960
basis_id = self._fetch_batch(batch, basis_id, cache)
3996
self.source._safe_to_return_from_cache = False
3997
3962
self.target.abort_write_group()
4011
3976
"""See InterRepository.fetch()."""
4012
3977
if fetch_spec is not None:
4013
3978
raise AssertionError("Not implemented yet...")
4014
ui.ui_factory.warn_experimental_format_fetch(self)
4015
3979
if (not self.source.supports_rich_root()
4016
3980
and self.target.supports_rich_root()):
4017
3981
self._converting_to_rich_root = True
4018
3982
self._revision_id_to_root_id = {}
4020
3984
self._converting_to_rich_root = False
4021
# See <https://launchpad.net/bugs/456077> asking for a warning here
4022
if self.source._format.network_name() != self.target._format.network_name():
4023
ui.ui_factory.show_user_warning('cross_format_fetch',
4024
from_format=self.source._format,
4025
to_format=self.target._format)
4026
3985
revision_ids = self.target.search_missing_revision_ids(self.source,
4027
3986
revision_id, find_ghosts=find_ghosts).get_keys()
4028
3987
if not revision_ids:
4097
4056
:param to_convert: The disk object to convert.
4098
4057
:param pb: a progress bar to use for progress information.
4100
pb = ui.ui_factory.nested_progress_bar()
4103
4062
# this is only useful with metadir layouts - separated repo content.
4104
4063
# trigger an assertion if not such
4105
4064
repo._format.get_format_string()
4106
4065
self.repo_dir = repo.bzrdir
4107
pb.update('Moving repository to repository.backup')
4066
self.step('Moving repository to repository.backup')
4108
4067
self.repo_dir.transport.move('repository', 'repository.backup')
4109
4068
backup_transport = self.repo_dir.transport.clone('repository.backup')
4110
4069
repo._format.check_conversion_target(self.target_format)
4111
4070
self.source_repo = repo._format.open(self.repo_dir,
4113
4072
_override_transport=backup_transport)
4114
pb.update('Creating new repository')
4073
self.step('Creating new repository')
4115
4074
converted = self.target_format.initialize(self.repo_dir,
4116
4075
self.source_repo.is_shared())
4117
4076
converted.lock_write()
4119
pb.update('Copying content')
4078
self.step('Copying content into repository.')
4120
4079
self.source_repo.copy_content_into(converted)
4122
4081
converted.unlock()
4123
pb.update('Deleting old repository content')
4082
self.step('Deleting old repository content.')
4124
4083
self.repo_dir.transport.delete_tree('repository.backup')
4125
ui.ui_factory.note('repository converted')
4084
self.pb.note('repository converted')
4086
def step(self, message):
4087
"""Update the pb by a step."""
4089
self.pb.update(message, self.count, self.total)
4129
4092
_unescape_map = {
4350
4313
if versioned_file is None:
4352
# TODO: key is often going to be a StaticTuple object
4353
# I don't believe we can define a method by which
4354
# (prefix,) + StaticTuple will work, though we could
4355
# define a StaticTuple.sq_concat that would allow you to
4356
# pass in either a tuple or a StaticTuple as the second
4357
# object, so instead we could have:
4358
# StaticTuple(prefix) + key here...
4359
4315
missing_keys.update((prefix,) + key for key in
4360
4316
versioned_file.get_missing_compression_parent_keys())
4361
4317
except NotImplementedError:
4473
4429
fetching the inventory weave.
4475
4431
if self._rich_root_upgrade():
4476
return _mod_fetch.Inter1and2Helper(
4433
return bzrlib.fetch.Inter1and2Helper(
4477
4434
self.from_repository).generate_root_texts(revs)
4622
4579
def _get_convertable_inventory_stream(self, revision_ids,
4623
4580
delta_versus_null=False):
4624
# The two formats are sufficiently different that there is no fast
4625
# path, so we need to send just inventorydeltas, which any
4626
# sufficiently modern client can insert into any repository.
4627
# The StreamSink code expects to be able to
4581
# The source is using CHKs, but the target either doesn't or it has a
4582
# different serializer. The StreamSink code expects to be able to
4628
4583
# convert on the target, so we need to put bytes-on-the-wire that can
4629
4584
# be converted. That means inventory deltas (if the remote is <1.19,
4630
4585
# RemoteStreamSink will fallback to VFS to insert the deltas).
added
removed
bzrlib/repository.py
