Reconnect fix

agent.py

@@ -42,22 +42,27 @@ logger.setLevel(level)
 
 class SerialLineReceiver(SerialLineReceiverBase):
 
+    def __init__(self):
+        super(SerialLineReceiver, self).__init__()
+        self.tickId = LoopingCall(self.tick)
+        reactor.addSystemEventTrigger("before", "shutdown", self.shutdown)
+        self.running = True
+
     def connectionMade(self):
+        logger.debug("connectionMade")
+        self.tickId.start(5, now=False)
+        self.transport.dataBuffer = b""
+        self.transport._tempDataBuffer = [] # will be added to dataBuffer in doWrite
+        self.transport._tempDataLen = 0
         self.transport.write('\r\n')
-        self.send_command(
-            command='agent_started',
-            args={'version': Context.get_agent_version(),
-                  'system': system})
-
-        def shutdown():
-            self.connectionLost2('shutdown')
-            d = defer.Deferred()
-            reactor.callLater(0.3, d.callback, "1")
-            return d
-        reactor.addSystemEventTrigger("before", "shutdown", shutdown)
+        if self.running:
+            self.send_command(
+                command='agent_started',
+                args={'version': Context.get_agent_version(), 'system': system})
 
     def connectionLost(self, reason):
-        reactor.stop()
+        logger.debug("connectionLost")
+        self.tickId.stop()
 
     def connectionLost2(self, reason):
         self.send_command(command='agent_stopped',
@@ -70,10 +75,13 @@ class SerialLineReceiver(SerialLineReceiverBase):
         except Exception:
             logger.exception("Twisted hide exception")
 
-    def __init__(self):
-        super(SerialLineReceiver, self).__init__()
-        self.lc = LoopingCall(self.tick)
-        self.lc.start(5, now=False)
+    def shutdown(self):
+        self.running = False
+        logger.debug("shutdown")
+        self.connectionLost2('shutdown')
+        d = defer.Deferred()
+        reactor.callLater(0.3, d.callback, "1")
+        return d
 
     def send_status(self):
         import psutil
@@ -113,6 +121,7 @@ class SerialLineReceiver(SerialLineReceiverBase):
                 self._pretty_fun(func), ", ".join(missing_kwargs)))
 
     def _get_command(self, command, args):
+        logger.debug("_get_command %s %s" % (command, args))
         if not isinstance(command, basestring) or command.startswith('_'):
             raise AttributeError(u'Invalid command: %s' % command)
         try:
@@ -142,6 +151,7 @@ class SerialLineReceiver(SerialLineReceiverBase):
             return "<%s>" % type(fun).__name__
 
     def handle_command(self, command, args):
+        logger.debug("handle_command %s %s" % (command, args))
         func = self._get_command(command, args)
         retval = func(**args)
         self.send_response(
@@ -151,7 +161,6 @@ class SerialLineReceiver(SerialLineReceiverBase):
     def handle_response(self, response, args):
         pass
 
-
 def main():
     # Get proper serial class and port name
     (serial, port) = get_serial()

linux/posixvirtio.py

@@ -34,6 +34,7 @@ class SerialPort(abstract.FileDescriptor):
             self.port, os.O_RDWR | os.O_NOCTTY | os.O_NONBLOCK)
         self.reactor = reactor
         self.protocol = protocol
+        self.connected = 1
         self.protocol.makeConnection(self)
         self.startReading()
 
@@ -60,9 +61,12 @@ class SerialPort(abstract.FileDescriptor):
         serial data.
         """
         abstract.FileDescriptor.connectionLost(self, reason)
+        self.protocol.connectionLost(reason)
         os.close(self._serial)
-        sleep(2)
+        logger.debug("Reconecting after 5s")
+        sleep(5)
         self._serial = os.open(
             self.port, os.O_RDWR | os.O_NOCTTY | os.O_NONBLOCK)
+        self.connected = 1
+        self.protocol.makeConnection(self)
         self.startReading()
-        logger.info("Reconnecting")