fix blob announce locking up the daemon process

lbrynet/core/call_later_manager.py

@@ -1,6 +1,27 @@
+import logging
+
+log = logging.getLogger()
+
+MIN_DELAY = 0.0
+MAX_DELAY = 0.01
+DELAY_INCREMENT = 0.0001
+QUEUE_SIZE_THRESHOLD = 100
+
+
 class CallLaterManager(object):
     _callLater = None
     _pendingCallLaters = []
+    _delay = MIN_DELAY
+
+    @classmethod
+    def get_min_delay(cls):
+        cls._pendingCallLaters = [cl for cl in cls._pendingCallLaters if cl.active()]
+        queue_size = len(cls._pendingCallLaters)
+        if queue_size > QUEUE_SIZE_THRESHOLD:
+            cls._delay = min((cls._delay + DELAY_INCREMENT), MAX_DELAY)
+        else:
+            cls._delay = max((cls._delay - 2.0 * DELAY_INCREMENT), MIN_DELAY)
+        return cls._delay
 
     @classmethod
     def _cancel(cls, call_later):
@@ -53,6 +74,11 @@ class CallLaterManager(object):
         cls._pendingCallLaters.append(call_later)
         return call_later, canceller
 
+    @classmethod
+    def call_soon(cls, what, *args, **kwargs):
+        delay = cls.get_min_delay()
+        return cls.call_later(delay, what, *args, **kwargs)
+
     @classmethod
     def setup(cls, callLater):
         """

lbrynet/daemon/Daemon.py

@@ -227,7 +227,6 @@ class Daemon(AuthJSONRPCServer):
     @defer.inlineCallbacks
     def setup(self):
         reactor.addSystemEventTrigger('before', 'shutdown', self._shutdown)
-
         configure_loggly_handler()
 
         log.info("Starting lbrynet-daemon")
@@ -412,7 +411,6 @@ class Daemon(AuthJSONRPCServer):
         log.info("Status at time of shutdown: " + self.startup_status[0])
 
         self._stop_streams()
-
         self.looping_call_manager.shutdown()
         if self.analytics_manager:
             self.analytics_manager.shutdown()

lbrynet/dht/node.py

@@ -94,6 +94,7 @@ class Node(object):
         self.reactor_resolve = resolve
         self.reactor_listenUDP = listenUDP
         self.reactor_callLater = CallLaterManager.call_later
+        self.reactor_callSoon = CallLaterManager.call_soon
         self.node_id = node_id or self._generateID()
         self.port = udpPort
         self._listeningPort = None  # object implementing Twisted

lbrynet/dht/protocol.py

@@ -206,7 +206,7 @@ class KademliaProtocol(protocol.DatagramProtocol):
 
     def _scheduleSendNext(self, txData, address):
         """Schedule the sending of the next UDP packet """
-        delayed_call, _ = self._node.reactor_callLater(0, self._write, txData, address)
+        delayed_call, _ = self._node.reactor_callSoon(self._write, txData, address)
 
     def _write(self, txData, address):
         if self.transport: