Add pymin.item module.

[software/pymin.git] / pymin / pymindaemon.py

diff --git a/pymin/pymindaemon.py b/pymin/pymindaemon.py
index f7497536835ae72670cc2ca3acbcf55ba5d58ba3..067a727e265b42cd629f53deaa71fad585bb1020 100644 (file)
--- a/pymin/pymindaemon.py
+++ b/pymin/pymindaemon.py
@@ -10,11 +10,13 @@ command-line.
 
 import signal
 import socket
+import logging ; log = logging.getLogger('pymin.pymindaemon')
 
 from pymin.dispatcher import handler
 from pymin import dispatcher
 from pymin import eventloop
 from pymin import serializer
+from pymin import procman
 
 class PyminDaemon(eventloop.EventLoop):
     r"""PyminDaemon(root, bind_addr) -> PyminDaemon instance
@@ -37,34 +39,48 @@ class PyminDaemon(eventloop.EventLoop):
     >>> PyminDaemon(Root(), ('', 9999)).run()
     """
 
-    def __init__(self, root, bind_addr=('', 9999)):
+    def __init__(self, root, bind_addr=('', 9999), timer=1):
         r"""Initialize the PyminDaemon object.
 
         See PyminDaemon class documentation for more info.
         """
+        log.debug(u'PyminDaemon(%r, %r, %r)', root, bind_addr, timer)
+        # Timer timeout time
+        self.timer = timer
         # Create and bind socket
         sock = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
         sock.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
         sock.bind(bind_addr)
+        # Signal handling
+        def quit(loop, signum):
+            log.debug(u'PyminDaemon quit() handler: signal %r', signum)
+            log.info(u'Shutting down...')
+            loop.stop() # tell main event loop to stop
+        def reload_config(loop, signum):
+            log.debug(u'PyminDaemon reload_config() handler: signal %r', signum)
+            log.info(u'Reloading configuration...')
+            # TODO iterate handlers list propagating reload action
+        def timer(loop, signum):
+            loop.handle_timer()
+            signal.alarm(loop.timer)
+        def child(loop, signum):
+            procman.sigchild_handler(signum)
         # Create EventLoop
-        eventloop.EventLoop.__init__(self, sock)
+        eventloop.EventLoop.__init__(self, sock, signals={
+                signal.SIGINT: quit,
+                signal.SIGTERM: quit,
+                signal.SIGUSR1: reload_config,
+                signal.SIGALRM: timer,
+                signal.SIGCHLD: child,
+            })
         # Create Dispatcher
         #TODO root.pymin = PyminHandler()
         self.dispatcher = dispatcher.Dispatcher(root)
-        # Signal handling
-        def quit(signum, frame):
-            print "Shuting down ..."
-            self.stop() # tell main event loop to stop
-        def reload_config(signum, frame):
-            print "Reloading configuration..."
-            # TODO iterate handlers list propagating reload action
-        signal.signal(signal.SIGINT, quit)
-        signal.signal(signal.SIGTERM, quit)
-        signal.signal(signal.SIGUSR1, reload_config)
 
     def handle(self):
         r"handle() -> None :: Handle incoming events using the dispatcher."
         (msg, addr) = self.file.recvfrom(65535)
+        log.debug(u'PyminDaemon.handle: message %r from %r', msg, addr)
         try:
             result = self.dispatcher.dispatch(unicode(msg, 'utf-8'))
             if result is not None:
@@ -76,23 +92,40 @@ class PyminDaemon(eventloop.EventLoop):
         except Exception, e:
             import traceback
             result = u'Internal server error\n'
-            traceback.print_exc() # TODO logging!
             response = u'ERROR '
+            log.exception(u'PyminDaemon.handle: unhandled exception')
         if result is None:
             response += u'0\n'
         else:
             response += u'%d\n%s' % (len(result), result)
+        log.debug(u'PyminDaemon.handle: response %r to %r', response, addr)
         self.file.sendto(response.encode('utf-8'), addr)
 
+    def handle_timer(self):
+        r"handle_timer() -> None :: Call handle_timer() on handlers."
+        self.dispatcher.root.handle_timer()
+
     def run(self):
         r"run() -> None :: Run the event loop (shortcut to loop())"
+        log.debug(u'PyminDaemon.loop()')
+        # Start the timer
+        self.handle_timer()
+        signal.alarm(self.timer)
+        # Loop
         try:
             return self.loop()
         except eventloop.LoopInterruptedError, e:
+            log.debug(u'PyminDaemon.loop: interrupted')
             pass
 
 if __name__ == '__main__':
 
+    logging.basicConfig(
+        level   = logging.DEBUG,
+        format  = '%(asctime)s %(levelname)-8s %(message)s',
+        datefmt = '%H:%M:%S',
+    )
+
     class Root(dispatcher.Handler):
         @handler(u"Print all the arguments, return nothing.")
         def test(self, *args):