def __init__(self, dsp_endpoints, event_endpoint, balance_conn_timeout):
'''
Constructor
dsp_endpoints : is a list of tuples(endpoint, qps) where
enpoint is a string like '192.168.10.152:5869'
and qps is the value indicating queries per
second for that enpoint.
balance_conn_timeout : is the time period for rebalancing
available connections.
'''
# list containing tuples in the form
# (endpoint, expected qps, current qps)
self.dest_eps = [[ep[0], ep[1], 0] for ep in dsp_endpoints]
self.event_endpoint = event_endpoint
self.conns = {}
self.awaiting_conns = {}
self.event_conn_queue = []
self.event_conns = {}
self.event_connections = 0
self.keep_alive_resp_waiting = {}
self.balance_conn_to = balance_conn_timeout
self.loop = pyev.default_loop()
self.watchers = [
pyev.Signal(sig, self.loop, self.signal_cb) for sig in STOPSIGNALS
]
self.watchers.append(
pyev.Timer(self.balance_conn_to, self.balance_conn_to, self.loop,
self.balance))
self.watchers.append(
pyev.Timer(CHECK_CONNS_TO, CHECK_CONNS_TO, self.loop,
self.check_established_connections))
self.watchers.append(
pyev.Timer(CHECK_PENDING_TO, CHECK_PENDING_TO, self.loop,
self.check_pending_wins))
if EVENT_CONN_KEEP_ALIVE_TO:
self.watchers.append(
pyev.Timer(EVENT_CONN_KEEP_ALIVE_TO, EVENT_CONN_KEEP_ALIVE_TO,
self.loop, self.send_keep_alives))
self.current_connections = 0
self.request_fact = RTBRequestFactory(TEMPLATE_FILENAME)
self.adserver = AdServer(self.loop)
self.request_fact.initialize()
self.request_fact.set_parameter_plug(PARAMETER_PLUGIN, self.adserver)
if PLUGIN_DO_TO:
self.watchers.append(
pyev.Timer(PLUGIN_DO_TO, PLUGIN_DO_TO, self.loop,
self.request_fact.plugin_instance.do))
self.pending_wins = []
