def __init__(self, namespace, data_dir=None, file_dir=None, lock_dir=None,
digest_filenames=True, **kwargs):
self.digest_filenames = digest_filenames
if not file_dir and not data_dir:
raise MissingCacheParameter("data_dir or file_dir is required")
elif file_dir:
self.file_dir = file_dir
else:
self.file_dir = data_dir + "/container_file"
util.verify_directory(self.file_dir)
if not lock_dir and not data_dir:
raise MissingCacheParameter("data_dir or lock_dir is required")
elif lock_dir:
self.lock_dir = lock_dir
else:
self.lock_dir = data_dir + "/container_file_lock"
util.verify_directory(self.lock_dir)
OpenResourceNamespaceManager.__init__(self, namespace)
self.file = util.encoded_path(root=self.file_dir,
identifiers=[self.namespace],
extension='.cache',
digest_filenames=self.digest_filenames)
self.hash = {}
debug("data file %s", self.file)
def __init__(self, namespace, bind, table, data_dir=None, lock_dir=None,
**kwargs):
"""Create a namespace manager for use with a database table via
SQLAlchemy.
``bind``
SQLAlchemy ``Engine`` or ``Connection`` object
``table``
SQLAlchemy ``Table`` object in which to store namespace data.
This should usually be something created by ``make_cache_table``.
"""
OpenResourceNamespaceManager.__init__(self, namespace)
if lock_dir:
self.lock_dir = lock_dir
elif data_dir:
self.lock_dir = data_dir + "/container_db_lock"
if self.lock_dir:
verify_directory(self.lock_dir)
self.bind = self.__class__.binds.get(str(bind.url), lambda: bind)
self.table = self.__class__.tables.get('%s:%s' % (bind.url, table.name),
lambda: table)
self.hash = {}
self._is_new = False
self.loaded = False
def __init__(self, namespace, dbmmodule=None, data_dir=None,
dbm_dir=None, lock_dir=None,
digest_filenames=True, **kwargs):
self.digest_filenames = digest_filenames
if not dbm_dir and not data_dir:
raise MissingCacheParameter("data_dir or dbm_dir is required")
elif dbm_dir:
self.dbm_dir = dbm_dir
else:
self.dbm_dir = data_dir + "/container_dbm"
util.verify_directory(self.dbm_dir)
if not lock_dir and not data_dir:
raise MissingCacheParameter("data_dir or lock_dir is required")
elif lock_dir:
self.lock_dir = lock_dir
else:
self.lock_dir = data_dir + "/container_dbm_lock"
util.verify_directory(self.lock_dir)
self.dbmmodule = dbmmodule or anydbm
self.dbm = None
OpenResourceNamespaceManager.__init__(self, namespace)
self.file = util.encoded_path(root=self.dbm_dir,
identifiers=[self.namespace],
extension='.dbm',
digest_filenames=self.digest_filenames)
debug("data file %s", self.file)
self._checkfile()
def __init__(self, namespace, url, memcache_module="auto", data_dir=None, lock_dir=None, **kw):
NamespaceManager.__init__(self, namespace)
_memcache_module = _client_libs[memcache_module]
if not url:
raise MissingCacheParameter("url is required")
if lock_dir:
self.lock_dir = lock_dir
elif data_dir:
self.lock_dir = data_dir + "/container_mcd_lock"
if self.lock_dir:
verify_directory(self.lock_dir)
# Check for pylibmc namespace manager, in which case client will be
# instantiated by subclass __init__, to handle behavior passing to the
# pylibmc client
if not _is_configured_for_pylibmc(memcache_module, _memcache_module):
self.mc = MemcachedNamespaceManager.clients.get(
(memcache_module, url), _memcache_module.Client, url.split(";")
)
def __init__(self, namespace, url=None, sa_opts=None, optimistic=False,
table_name='beaker_cache', data_dir=None, lock_dir=None,
schema_name=None, **params):
"""Creates a database namespace manager
``url``
SQLAlchemy compliant db url
``sa_opts``
A dictionary of SQLAlchemy keyword options to initialize the engine
with.
``optimistic``
Use optimistic session locking, note that this will result in an
additional select when updating a cache value to compare version
numbers.
``table_name``
The table name to use in the database for the cache.
``schema_name``
The schema name to use in the database for the cache.
"""
OpenResourceNamespaceManager.__init__(self, namespace)
if sa_opts is None:
sa_opts = params
if lock_dir:
self.lock_dir = lock_dir
elif data_dir:
self.lock_dir = data_dir + "/container_db_lock"
if self.lock_dir:
verify_directory(self.lock_dir)
# Check to see if the table's been created before
url = url or sa_opts['sa.url']
table_key = url + table_name
def make_cache():
# Check to see if we have a connection pool open already
meta_key = url + table_name
def make_meta():
# SQLAlchemy pops the url, this ensures it sticks around
# later
sa_opts['sa.url'] = url
engine = sa.engine_from_config(sa_opts, 'sa.')
meta = sa.MetaData()
meta.bind = engine
return meta
meta = DatabaseNamespaceManager.metadatas.get(meta_key, make_meta)
# Create the table object and cache it now
cache = sa.Table(table_name, meta,
sa.Column('id', types.Integer, primary_key=True),
sa.Column('namespace', types.String(255), nullable=False),
sa.Column('accessed', types.DateTime, nullable=False),
sa.Column('created', types.DateTime, nullable=False),
sa.Column('data', types.PickleType, nullable=False),
sa.UniqueConstraint('namespace'),
schema=schema_name if schema_name else meta.schema
)
cache.create(checkfirst=True)
return cache
self.hash = {}
self._is_new = False
self.loaded = False
self.cache = DatabaseNamespaceManager.tables.get(table_key, make_cache)
