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- Committer: Jelmer Vernooij
- Date: 2009-06-17 02:57:30 UTC
- mto: (0.312.1 master) (6883.23.1 bundle-git)
- mto: This revision was merged to the branch mainline in revision 6960.
- Revision ID: jelmer@samba.org-20090617025730-9gy1rv8i0d2pchn5
Implement GitRepository.revision_graph_can_have_wrong_parents().
- files added:
- HACKING
- notes
- files removed:
- cache.py
- files renamed:
- git_branch.py => branch.py
- git_dir.py => dir.py
- ids.py => mapping.py
- git_repository.py => repository.py
- tests/test_git_branch.py => tests/test_branch.py
- tests/test_git_dir.py => tests/test_dir.py
- tests/test_ids.py => tests/test_mapping.py
- tests/test_git_repository.py => tests/test_repository.py
- files modified:
- .bzrignore
added
removed
repository.py
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# Copyright (C) 2007 Canonical Ltd
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# Copyright (C) 2008-2009 Jelmer Vernooij <jelmer@samba.org>
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#
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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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"""An adapter between a Git Repository and a Bazaar Branch"""
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import git
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import os
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import time
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import bzrlib
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from bzrlib import (
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deprecated_graph,
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errors,
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graph,
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inventory,
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osutils,
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repository,
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revision,
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revisiontree,
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ui,
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urlutils,
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versionedfile,
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)
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from bzrlib.transport import get_transport
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from bzrlib.plugins.git import (
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cache,
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ids,
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)
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cachedbs = {}
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class GitRepository(repository.Repository):
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)
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from bzrlib.foreign import (
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ForeignRepository,
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)
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from bzrlib.trace import (
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mutter,
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)
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from bzrlib.transport import (
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get_transport,
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)
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from bzrlib.plugins.git.commit import (
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GitCommitBuilder,
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)
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from bzrlib.plugins.git.inventory import (
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GitInventory,
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)
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from bzrlib.plugins.git.mapping import (
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default_mapping,
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foreign_git,
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mapping_registry,
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)
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from bzrlib.plugins.git.versionedfiles import (
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GitRevisions,
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GitTexts,
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)
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class GitRepository(ForeignRepository):
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"""An adapter to git repositories for bzr."""
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_serializer = None
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def __init__(self, gitdir, lockfiles):
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_commit_builder_class = GitCommitBuilder
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vcs = foreign_git
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def __init__(self, gitdir, lockfiles):
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ForeignRepository.__init__(self, GitRepositoryFormat(), gitdir,
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lockfiles)
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from bzrlib.plugins.git import fetch, push
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for optimiser in [fetch.InterRemoteGitNonGitRepository,
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fetch.InterLocalGitNonGitRepository,
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fetch.InterGitGitRepository,
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push.InterToLocalGitRepository,
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push.InterToRemoteGitRepository]:
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repository.InterRepository.register_optimiser(optimiser)
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def is_shared(self):
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return True
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def supports_rich_root(self):
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return True
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def _warn_if_deprecated(self):
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# This class isn't deprecated
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pass
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def get_mapping(self):
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return default_mapping
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def make_working_trees(self):
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return True
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def revision_graph_can_have_wrong_parents(self):
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return False
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def dfetch(self, source, stop_revision):
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interrepo = repository.InterRepository.get(source, self)
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return interrepo.dfetch(stop_revision)
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def dfetch_refs(self, source, stop_revision):
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interrepo = repository.InterRepository.get(source, self)
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return interrepo.dfetch_refs(stop_revision)
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class LocalGitRepository(GitRepository):
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"""Git repository on the file system."""
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def __init__(self, gitdir, lockfiles):
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# FIXME: This also caches negatives. Need to be more careful
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# about this once we start writing to git
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self._parents_provider = graph.CachingParentsProvider(self)
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GitRepository.__init__(self, gitdir, lockfiles)
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self.base = gitdir.root_transport.base
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self.bzrdir = gitdir
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self.control_files = lockfiles
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self._git = git.repo.Repo(gitdir.root_transport.local_abspath("."))
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self._blob_cache = {}
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self._blob_info_cache = {}
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cache_dir = cache.create_cache_dir()
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cachedir_transport = get_transport(cache_dir)
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cache_file = os.path.join(cache_dir, 'cache-%s' % ids.NAMESPACE)
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if not cachedbs.has_key(cache_file):
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cachedbs[cache_file] = cache.sqlite3.connect(cache_file)
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self.cachedb = cachedbs[cache_file]
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self._init_cachedb()
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self._git = gitdir._git
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self.texts = None
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self.signatures = versionedfile.VirtualSignatureTexts(self)
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self.revisions = None
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self._format = GitFormat()
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self._fallback_repositories = []
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def _init_cachedb(self):
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self.cachedb.executescript("""
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create table if not exists inventory (
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revid blob);
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create unique index if not exists inventory_revid
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on inventory (revid);
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create table if not exists entry_revision (
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inventory blob,
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path blob,
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gitid blob,
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executable integer,
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revision blob);
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create unique index if not exists entry_revision_revid_path
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on entry_revision (inventory, path);
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""")
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self.cachedb.commit()
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def is_shared(self):
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return True
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def supports_rich_root(self):
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return False
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def get_ancestry(self, revision_id):
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revision_id = revision.ensure_null(revision_id)
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ret = []
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if revision_id != revision.NULL_REVISION:
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skip = 0
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max_count = 1000
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cms = None
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while cms != []:
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cms = self._git.commits(ids.convert_revision_id_bzr_to_git(revision_id), max_count=max_count, skip=skip)
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skip += max_count
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ret += [ids.convert_revision_id_git_to_bzr(cm.id) for cm in cms]
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return [None] + ret
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self.signatures = None
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self.revisions = GitRevisions(self._git.object_store)
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self.inventories = None
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self.texts = GitTexts(self)
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def all_revision_ids(self):
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ret = set([revision.NULL_REVISION])
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heads = self._git.refs.as_dict('refs/heads')
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if heads == {}:
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return ret
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bzr_heads = [self.get_mapping().revision_id_foreign_to_bzr(h) for h in heads.itervalues()]
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ret = set(bzr_heads)
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graph = self.get_graph()
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for rev, parents in graph.iter_ancestry(bzr_heads):
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ret.add(rev)
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return ret
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def _make_parents_provider(self):
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"""See Repository._make_parents_provider()."""
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return self._parents_provider
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def get_parent_map(self, revids):
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parent_map = {}
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for revision_id in revids:
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assert isinstance(revision_id, str)
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if revision_id == revision.NULL_REVISION:
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parent_map[revision_id] = ()
143
continue
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hexsha, mapping = self.lookup_git_revid(revision_id)
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commit = self._git.commit(hexsha)
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if commit is None:
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continue
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else:
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parent_map[revision_id] = [mapping.revision_id_foreign_to_bzr(p) for p in commit.parents]
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return parent_map
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def get_ancestry(self, revision_id, topo_sorted=True):
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"""See Repository.get_ancestry().
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"""
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if revision_id is None:
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return [None, revision.NULL_REVISION] + self._all_revision_ids()
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assert isinstance(revision_id, str)
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ancestry = []
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graph = self.get_graph()
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for rev, parents in graph.iter_ancestry([revision_id]):
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ancestry.append(rev)
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ancestry.reverse()
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return [None] + ancestry
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def get_signature_text(self, revision_id):
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raise errors.NoSuchRevision(self, revision_id)
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def lookup_revision_id(self, revid):
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"""Lookup a revision id.
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:param revid: Bazaar revision id.
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:return: Tuple with git revisionid and mapping.
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"""
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# Yes, this doesn't really work, but good enough as a stub
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return osutils.sha(rev_id).hexdigest(), self.get_mapping()
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def has_signature_for_revision_id(self, revision_id):
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return False
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def get_parent_map(self, revision_ids):
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ret = {}
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for revid in revision_ids:
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commit = self._git.commit(ids.convert_revision_id_bzr_to_git(revid))
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ret[revid] = tuple([ids.convert_revision_id_git_to_bzr(p.id) for p in commit.parents])
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return ret
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def lookup_git_revid(self, bzr_revid):
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try:
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return mapping_registry.revision_id_bzr_to_foreign(bzr_revid)
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except errors.InvalidRevisionId:
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raise errors.NoSuchRevision(self, bzr_revid)
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def get_revision(self, revision_id):
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git_commit_id = ids.convert_revision_id_bzr_to_git(revision_id)
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commit = self._git.commit(git_commit_id)
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git_commit_id, mapping = self.lookup_git_revid(revision_id)
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try:
189
commit = self._git.commit(git_commit_id)
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except KeyError:
191
raise errors.NoSuchRevision(self, revision_id)
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# print "fetched revision:", git_commit_id
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revision = self._parse_rev(commit)
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revision = mapping.import_commit(commit)
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assert revision is not None
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return revision
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def has_revision(self, revision_id):
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try:
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self.get_revision(revision_id)
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except NoSuchRevision:
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except errors.NoSuchRevision:
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return False
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else:
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return True
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def get_revisions(self, revisions):
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return [self.get_revision(r) for r in revisions]
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@classmethod
139
def _parse_rev(klass, commit):
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"""Convert a git commit to a bzr revision.
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:return: a `bzrlib.revision.Revision` object.
143
"""
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rev = revision.Revision(ids.convert_revision_id_git_to_bzr(commit.id))
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rev.parent_ids = tuple([ids.convert_revision_id_git_to_bzr(p.id) for p in commit.parents])
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rev.inventory_sha1 = ""
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rev.message = commit.message.decode("utf-8", "replace")
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rev.committer = str(commit.committer)
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rev.properties['author'] = str(commit.author)
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rev.timestamp = time.mktime(commit.committed_date)
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rev.timezone = 0
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return rev
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def get_revisions(self, revids):
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return [self.get_revision(r) for r in revids]
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def revision_trees(self, revids):
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for revid in revids:
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def revision_tree(self, revision_id):
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revision_id = revision.ensure_null(revision_id)
160
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if revision_id == revision.NULL_REVISION:
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inv = inventory.Inventory(root_id=None)
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inv.revision_id = revision_id
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return revisiontree.RevisionTree(self, inv, revision_id)
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return GitRevisionTree(self, revision_id)
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def _fetch_blob(self, git_id):
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lines = self._git.cat_file('blob', git_id)
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# print "fetched blob:", git_id
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if self._building_inventory is not None:
172
self._building_inventory.git_file_data[git_id] = lines
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return lines
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def _get_blob(self, git_id):
176
try:
177
return self._blob_cache[git_id]
178
except KeyError:
179
return self._fetch_blob(git_id)
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def _get_blob_caching(self, git_id):
182
try:
183
return self._blob_cache[git_id]
184
except KeyError:
185
lines = self._fetch_blob(git_id)
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self._blob_cache[git_id] = lines
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return lines
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def _get_blob_info(self, git_id):
190
try:
191
return self._blob_info_cache[git_id]
192
except KeyError:
193
lines = self._get_blob(git_id)
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size = sum(len(line) for line in lines)
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sha1 = osutils.sha_strings(lines)
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self._blob_info_cache[git_id] = (size, sha1)
197
return size, sha1
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def get_inventory(self, revision_id):
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assert revision_id != None
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return self.revision_tree(revision_id).inventory
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def _set_entry_text_info(self, inv, entry, git_id):
204
if entry.kind == 'directory':
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return
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size, sha1 = self._get_blob_info(git_id)
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entry.text_size = size
208
entry.text_sha1 = sha1
209
if entry.kind == 'symlink':
210
lines = self._get_blob_caching(git_id)
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entry.symlink_target = ''.join(lines)
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def _get_file_revision(self, revision_id, path):
214
lines = self._git.rev_list(
215
[ids.convert_revision_id_bzr_to_git(revision_id)],
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max_count=1, topo_order=True, paths=[path])
217
[line] = lines
218
result = ids.convert_revision_id_git_to_bzr(line[:-1])
219
# print "fetched file revision", line[:-1], path
220
return result
221
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def _get_entry_revision_from_db(self, revid, path, git_id, executable):
223
result = self.cachedb.execute(
224
"select revision from entry_revision where"
225
" inventory=? and path=? and gitid=? and executable=?",
226
(revid, path, git_id, executable)).fetchone()
227
if result is None:
228
return None
229
[revision] = result
230
return revision
231
232
def _set_entry_revision_in_db(self, revid, path, git_id, executable, revision):
233
self.cachedb.execute(
234
"insert into entry_revision"
235
" (inventory, path, gitid, executable, revision)"
236
" values (?, ?, ?, ?, ?)",
237
(revid, path, git_id, executable, revision))
238
239
def _all_inventories_in_db(self, revids):
240
for revid in revids:
241
result = self.cachedb.execute(
242
"select count(*) from inventory where revid = ?",
243
(revid,)).fetchone()
244
if result is None:
245
return False
246
return True
247
248
def _set_entry_revision(self, entry, revid, path, git_id):
249
# If a revision is in the cache, we assume it contains entries for the
250
# whole inventory. So if all parent revisions are in the cache, but no
251
# parent entry is present, then the entry revision is the current
252
# revision. That amortizes the number of _get_file_revision calls for
253
# large pulls to a "small number".
254
entry_rev = self._get_entry_revision_from_db(
255
revid, path, git_id, entry.executable)
256
if entry_rev is not None:
257
entry.revision = entry_rev
258
return
259
260
revision = self.get_revision(revid)
261
for parent_id in revision.parent_ids:
262
entry_rev = self._get_entry_revision_from_db(
263
parent_id, path, git_id, entry.executable)
264
if entry_rev is not None:
265
break
266
else:
267
if self._all_inventories_in_db(revision.parent_ids):
268
entry_rev = revid
269
else:
270
entry_rev = self._get_file_revision(revid, path)
271
self._set_entry_revision_in_db(
272
revid, path, git_id, entry.executable, entry_rev)
273
#self.cachedb.commit()
274
entry.revision = entry_rev
275
276
277
def escape_file_id(file_id):
278
return file_id.replace('_', '__').replace(' ', '_s')
224
def set_make_working_trees(self, trees):
225
pass
226
227
def fetch_objects(self, determine_wants, graph_walker, resolve_ext_ref,
228
progress=None):
229
return self._git.fetch_objects(determine_wants, graph_walker, progress)
279
230
280
231
281
232
class GitRevisionTree(revisiontree.RevisionTree):
282
233
283
234
def __init__(self, repository, revision_id):
235
self._revision_id = revision_id
284
236
self._repository = repository
285
self.revision_id = revision_id
286
git_id = ids.convert_revision_id_bzr_to_git(revision_id)
287
self.tree = repository._git.commit(git_id).tree
288
self._inventory = inventory.Inventory(revision_id=revision_id)
289
self._inventory.root.revision = revision_id
290
self._build_inventory(self.tree, self._inventory.root, "")
291
292
def get_file_lines(self, file_id):
293
entry = self._inventory[file_id]
294
if entry.kind == 'directory': return []
295
git_id = self._inventory.git_ids[file_id]
296
if git_id in self._inventory.git_file_data:
297
return self._inventory.git_file_data[git_id]
298
return self._repository._get_blob(git_id)
299
300
def _build_inventory(self, tree, ie, path):
301
assert isinstance(path, str)
302
for b in tree.contents:
303
basename = b.name.decode("utf-8")
304
if path == "":
305
child_path = b.name
306
else:
307
child_path = urlutils.join(path, b.name)
308
file_id = escape_file_id(child_path.encode('utf-8'))
309
if b.mode[0] == '0':
310
child_ie = inventory.InventoryDirectory(file_id, basename, ie.file_id)
311
elif b.mode[0] == '1':
312
if b.mode[1] == '0':
313
child_ie = inventory.InventoryFile(file_id, basename, ie.file_id)
314
child_ie.text_sha1 = osutils.sha_string(b.data)
315
elif b.mode[1] == '2':
316
child_ie = inventory.InventoryLink(file_id, basename, ie.file_id)
317
child_ie.text_sha1 = osutils.sha_string("")
318
else:
319
raise AssertionError(
320
"Unknown file kind, perms=%r." % (b.mode,))
321
child_ie.text_size = b.size
322
else:
323
raise AssertionError(
324
"Unknown blob kind, perms=%r." % (b.mode,))
325
child_ie.executable = bool(int(b.mode[3:], 8) & 0111)
326
child_ie.revision = self.revision_id
327
assert not basename in ie.children
328
ie.children[basename] = child_ie
329
if b.mode[0] == '0':
330
self._build_inventory(b, child_ie, child_path)
331
332
333
class GitFormat(object):
237
store = repository._git.object_store
238
assert isinstance(revision_id, str)
239
git_id, self.mapping = repository.lookup_git_revid(revision_id)
240
try:
241
commit = store[git_id]
242
except KeyError, r:
243
raise errors.NoSuchRevision(repository, revision_id)
244
self.tree = commit.tree
245
self._inventory = GitInventory(self.tree, self.mapping, store,
246
revision_id)
247
248
def get_revision_id(self):
249
return self._revision_id
250
251
def get_file_text(self, file_id, path=None):
252
if path is not None:
253
entry = self._inventory._get_ie(path)
254
else:
255
entry = self._inventory[file_id]
256
if entry.kind == 'directory': return ""
257
return entry.object.data
258
259
260
class GitRepositoryFormat(repository.RepositoryFormat):
261
"""Git repository format."""
334
262
335
263
supports_tree_reference = False
264
rich_root_data = True
336
265
337
266
def get_format_description(self):
338
267
return "Git Repository"
268
269
def initialize(self, url, shared=False, _internal=False):
270
raise bzr_errors.UninitializableFormat(self)
271
272
def check_conversion_target(self, target_repo_format):
273
return target_repo_format.rich_root_data
274
275
def network_name(self):
276
return "git"
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0