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# Copyright (C) 2010, 2011 Sebastian Thiel (byronimo@gmail.com) and contributors
#
# This module is part of GitDB and is released under
# the New BSD License: http://www.opensource.org/licenses/bsd-license.php
from gitdb.db.base import (
CompoundDB,
ObjectDBW,
FileDBBase
)
from gitdb.db.loose import LooseObjectDB
from gitdb.db.pack import PackedDB
from gitdb.db.ref import ReferenceDB
from gitdb.exc import InvalidDBRoot
import os
__all__ = ('GitDB', )
class GitDB(FileDBBase, ObjectDBW, CompoundDB):
"""A git-style object database, which contains all objects in the 'objects'
subdirectory
``IMPORTANT``: The usage of this implementation is highly discouraged as it fails to release file-handles.
This can be a problem with long-running processes and/or big repositories.
"""
# Configuration
PackDBCls = PackedDB
LooseDBCls = LooseObjectDB
ReferenceDBCls = ReferenceDB
# Directories
packs_dir = 'pack'
loose_dir = ''
alternates_dir = os.path.join('info', 'alternates')
def __init__(self, root_path):
"""Initialize ourselves on a git objects directory"""
super().__init__(root_path)
def _set_cache_(self, attr):
if attr == '_dbs' or attr == '_loose_db':
self._dbs = list()
loose_db = None
for subpath, dbcls in ((self.packs_dir, self.PackDBCls),
(self.loose_dir, self.LooseDBCls),
(self.alternates_dir, self.ReferenceDBCls)):
path = self.db_path(subpath)
if os.path.exists(path):
self._dbs.append(dbcls(path))
if dbcls is self.LooseDBCls:
loose_db = self._dbs[-1]
# END remember loose db
# END check path exists
# END for each db type
# should have at least one subdb
if not self._dbs:
raise InvalidDBRoot(self.root_path())
# END handle error
# we the first one should have the store method
assert loose_db is not None and hasattr(loose_db, 'store'), "First database needs store functionality"
# finally set the value
self._loose_db = loose_db
else:
super()._set_cache_(attr)
# END handle attrs
#{ ObjectDBW interface
def store(self, istream):
return self._loose_db.store(istream)
def ostream(self):
return self._loose_db.ostream()
def set_ostream(self, ostream):
return self._loose_db.set_ostream(ostream)
#} END objectdbw interface
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