def __init__(self,
master_nodes,
name,
compress=True,
cache_size=None,
**kw):
super(Application, self).__init__(parseMasterList(master_nodes), name,
**kw)
# Internal Attributes common to all thread
self._db = None
self.primary_master_node = None
self.trying_master_node = None
# no self-assigned NID, primary master will supply us one
self._cache = ClientCache() if cache_size is None else \
ClientCache(max_size=cache_size)
self._loading_oid = None
self.new_oids = ()
self.last_oid = '\0' * 8
self.storage_event_handler = storage.StorageEventHandler(self)
self.storage_bootstrap_handler = storage.StorageBootstrapHandler(self)
self.storage_handler = storage.StorageAnswersHandler(self)
self.primary_handler = master.PrimaryAnswersHandler(self)
self.primary_bootstrap_handler = master.PrimaryBootstrapHandler(self)
self.notifications_handler = master.PrimaryNotificationsHandler(self)
self._txn_container = TransactionContainer()
# Lock definition :
# _load_lock is used to make loading and storing atomic
lock = Lock()
self._load_lock_acquire = lock.acquire
self._load_lock_release = lock.release
# _oid_lock is used in order to not call multiple oid
# generation at the same time
lock = Lock()
self._oid_lock_acquire = lock.acquire
self._oid_lock_release = lock.release
lock = Lock()
# _cache_lock is used for the client cache
self._cache_lock_acquire = lock.acquire
self._cache_lock_release = lock.release
# _connecting_to_master_node is used to prevent simultaneous master
# node connection attempts
self._connecting_to_master_node = Lock()
# same for storage nodes
self._connecting_to_storage_node = Lock()
self._node_failure_dict = {}
self.compress = getCompress(compress)
def __init__(self, app):
self.app = app
self.connection_dict = {}
# Define a lock in order to create one connection to
# a storage node at a time to avoid multiple connections
# to the same node.
self._lock = Lock()
self.node_failure_dict = {}
