def __init__(self):
super(StateUpdater, self).__init__()
# flag the thread as daemon so it's abruptly killed
# when its parent process exists
self.daemon = True
# shared memory client
self.sm = sharedmem.MemcacheClient(
[config.BASE['SHARED_MEM_HOSTNAME']],
socket_timeout=config.BASE['SHARED_MEM_SOCKET_TIMEOUT'])
def __init__(self):
self._procs_started = None
self._control_socket = None
# multiprocessing.Process() objects of the child processes spawned
self._processes = []
# shared memory client
self._sm = sharedmem.MemcacheClient(
[config.BASE['SHARED_MEM_HOSTNAME']],
socket_timeout=config.BASE['SHARED_MEM_SOCKET_TIMEOUT'],
server_max_value_length=config.BASE['SHARED_MEM_SERVER_MAX_VALUE_LENGTH'])
def __init__(self):
super(StatePusher, self).__init__()
# flag the thread as daemon so it's abruptly killed
# when its parent process exists
self.daemon = True
# shared memory client
self.sm = sharedmem.MemcacheClient(
[config.BASE['SHARED_MEM_HOSTNAME']],
socket_timeout=config.BASE['SHARED_MEM_SOCKET_TIMEOUT'],
server_max_value_length=config.BASE['SHARED_MEM_SERVER_MAX_VALUE_LENGTH'])
# on startup do not attempt to push state
self.state_ts = 0
def __init__(self):
super(Polaris, self).__init__()
# shared memory client
self._sm = sharedmem.MemcacheClient(
[config.BASE['SHARED_MEM_HOSTNAME']],
socket_timeout=config.BASE['SHARED_MEM_SOCKET_TIMEOUT'])
# this will hold the distribution state
self._state = {}
# used to determine whether we need to set self._state
# to the state we pull from shared memory(every STATE_SYNC_INTERVAL)
# initialize with 0 as it will be used for comparison
# in self._sync_state on it's first run
self._state_timestamp = 0
# time when the state was last synced from shared memory
# init with 0 for comparison in _sync_state() to work
self._state_last_synced = 0
def __init__(self, prober_requests, prober_responses):
"""
args:
prober_requests: multiprocessing.Queue(),
queue to put new probes on
prober_responses: multiprocessing.Queue(),
queue to get processed probes from
"""
super(Tracker, self).__init__()
self.prober_requests = prober_requests
self.prober_responses = prober_responses
# create health state table from the lb config
self.state = state.State(config_obj=config.LB)
# shared memory client
self._sm = sharedmem.MemcacheClient(
[config.BASE['SHARED_MEM_HOSTNAME']],
socket_timeout=config.BASE['SHARED_MEM_SOCKET_TIMEOUT'],
server_max_value_length=config.
BASE['SHARED_MEM_SERVER_MAX_VALUE_LENGTH'])