1 files changed, 42 insertions, 0 deletions
diff --git a/pysnmp/carrier/asyncore/dispatch.py b/pysnmp/carrier/asyncore/dispatch.py
new file mode 100644
index 0000000..790152d
--- /dev/null
+++ b/pysnmp/carrier/asyncore/dispatch.py
@@ -0,0 +1,42 @@
+# Implements I/O over asynchronous sockets
+from time import time
+from sys import exc_info
+from traceback import format_exception
+from asyncore import socket_map
+from asyncore import loop
+from pysnmp.carrier.base import AbstractTransportDispatcher
+from pysnmp.error import PySnmpError
+
+class AsyncoreDispatcher(AbstractTransportDispatcher):
+    def __init__(self):
+        self.__sockMap = {} # use own map for MT safety
+        self.timeout = 0.5
+        AbstractTransportDispatcher.__init__(self)
+
+    def getSocketMap(self): return self.__sockMap
+    def setSocketMap(self, sockMap=socket_map): self.__sockMap = sockMap
+    
+    def registerTransport(self, tDomain, t):
+        AbstractTransportDispatcher.registerTransport(self, tDomain, t)
+        t.registerSocket(self.__sockMap)
+
+    def unregisterTransport(self, tDomain):
+        self.getTransport(tDomain).unregisterSocket(self.__sockMap)
+        AbstractTransportDispatcher.unregisterTransport(self, tDomain)
+
+    def transportsAreWorking(self):
+        for transport in self.__sockMap.values():
+            if transport.writable():
+                return 1
+        return 0
+    
+    def runDispatcher(self, timeout=0.0):
+        while self.jobsArePending() or self.transportsAreWorking():
+            try:
+                loop(timeout and timeout or self.timeout,
+                     use_poll=True, map=self.__sockMap, count=1)
+            except KeyboardInterrupt:
+                raise
+            except:
+                raise PySnmpError('poll error: %s' % ';'.join(format_exception(*exc_info())))
+            self.handleTimerTick(time())