Added logging

channels/log.py

@@ -0,0 +1,16 @@
+import logging
+
+
+def setup_logger(name, verbosity=1):
+    formatter = logging.Formatter(fmt='%(asctime)s - %(levelname)s - %(module)s - %(message)s')
+
+    handler = logging.StreamHandler()
+    handler.setFormatter(formatter)
+
+    logger = logging.getLogger(name)
+    logger.setLevel(logging.INFO)
+    logger.addHandler(handler)
+    if verbosity > 1:
+        logger.setLevel(logging.DEBUG)
+    logger.propagate = False
+    return logger

channels/management/commands/runserver.py

@@ -1,15 +1,21 @@
-import django
 import threading
+
 from django.core.management.commands.runserver import Command as RunserverCommand
-from django.core.management import CommandError
+
 from channels import channel_backends, DEFAULT_CHANNEL_BACKEND
-from channels.worker import Worker
 from channels.adapters import UrlConsumer
 from channels.interfaces.wsgi import WSGIInterface
+from channels.log import setup_logger
+from channels.worker import Worker
 
 
 class Command(RunserverCommand):
 
+    def handle(self, *args, **options):
+        self.verbosity = options.get("verbosity", 1)
+        self.logger = setup_logger('django.channels', self.verbosity)
+        super(Command, self).handle(*args, **options)
+
     def get_handler(self, *args, **options):
         """
         Returns the default WSGI handler for the runner.
@@ -27,9 +33,9 @@ class Command(RunserverCommand):
             # Register the default one
             self.channel_backend.registry.add_consumer(UrlConsumer(), ["http.request"])
         # Note that this is the right one on the console
-        self.stdout.write("Worker thread running, channels enabled")
+        self.logger.info("Worker thread running, channels enabled")
         if self.channel_backend.local_only:
-            self.stdout.write("Local channel backend detected, no remote channels support")
+            self.logger.info("Local channel backend detected, no remote channels support")
         # Launch a worker thread
         worker = WorkerThread(self.channel_backend)
         worker.daemon = True

channels/management/commands/runworker.py

@@ -1,7 +1,7 @@
-import time
-from wsgiref.simple_server import BaseHTTPRequestHandler
 from django.core.management import BaseCommand, CommandError
+
 from channels import channel_backends, DEFAULT_CHANNEL_BACKEND
+from channels.log import setup_logger
 from channels.worker import Worker
 
 
@@ -9,6 +9,8 @@ class Command(BaseCommand):
 
     def handle(self, *args, **options):
         # Get the backend to use
+        self.verbosity = options.get("verbosity", 1)
+        self.logger = setup_logger('django.channels', self.verbosity)
         channel_backend = channel_backends[DEFAULT_CHANNEL_BACKEND]
         if channel_backend.local_only:
             raise CommandError(
@@ -16,10 +18,10 @@ class Command(BaseCommand):
                 "Configure a network-based backend in CHANNEL_BACKENDS to use this command."
             )
         # Launch a worker
-        self.stdout.write("Running worker against backend %s" % channel_backend)
+        self.logger.info("Running worker against backend %s", channel_backend)
         # Optionally provide an output callback
         callback = None
-        if options.get("verbosity", 1) > 1:
+        if self.verbosity > 1:
             callback = self.consumer_called
         # Run the worker
         try:
@@ -28,12 +30,4 @@ class Command(BaseCommand):
             pass
 
     def consumer_called(self, channel, message):
-        self.stdout.write("[%s] %s" % (self.log_date_time_string(), channel))
-
-    def log_date_time_string(self):
-        """Return the current time formatted for logging."""
-        now = time.time()
-        year, month, day, hh, mm, ss, x, y, z = time.localtime(now)
-        s = "%02d/%3s/%04d %02d:%02d:%02d" % (
-                day, BaseHTTPRequestHandler.monthname[month], year, hh, mm, ss)
-        return s
+        self.logger.debug("%s", channel)

channels/management/commands/runwsserver.py

@@ -1,6 +1,7 @@
-import time
 from django.core.management import BaseCommand, CommandError
+
 from channels import channel_backends, DEFAULT_CHANNEL_BACKEND
+from channels.log import setup_logger
 
 
 class Command(BaseCommand):
@@ -10,6 +11,8 @@ class Command(BaseCommand):
             help='Optional port number')
 
     def handle(self, *args, **options):
+        self.verbosity = options.get("verbosity", 1)
+        self.logger = setup_logger('django.channels', self.verbosity)
         # Get the backend to use
         channel_backend = channel_backends[DEFAULT_CHANNEL_BACKEND]
         if channel_backend.local_only:
@@ -23,13 +26,13 @@ class Command(BaseCommand):
             import asyncio
         except ImportError:
             from channels.interfaces.websocket_twisted import WebsocketTwistedInterface
-            self.stdout.write("Running Twisted/Autobahn WebSocket interface server")
-            self.stdout.write(" Channel backend: %s" % channel_backend)
-            self.stdout.write(" Listening on: ws://0.0.0.0:%i" % port)
+            self.logger.info("Running Twisted/Autobahn WebSocket interface server")
+            self.logger.info(" Channel backend: %s", channel_backend)
+            self.logger.info(" Listening on: ws://0.0.0.0:%i" % port)
             WebsocketTwistedInterface(channel_backend=channel_backend, port=port).run()
         else:
             from channels.interfaces.websocket_asyncio import WebsocketAsyncioInterface
-            self.stdout.write("Running asyncio/Autobahn WebSocket interface server")
-            self.stdout.write(" Channel backend: %s" % channel_backend)
-            self.stdout.write(" Listening on: ws://0.0.0.0:%i" % port)
+            self.logger.info("Running asyncio/Autobahn WebSocket interface server")
+            self.logger.info(" Channel backend: %s", channel_backend)
+            self.logger.info(" Listening on: ws://0.0.0.0:%i", port)
             WebsocketAsyncioInterface(channel_backend=channel_backend, port=port).run()

channels/worker.py

@@ -1,7 +1,10 @@
-import traceback
+import logging
+
 from .message import Message
 from .utils import name_that_thing
 
+logger = logging.getLogger('django.channels')
+
 
 class Worker(object):
     """
@@ -35,5 +38,4 @@ class Worker(object):
             except Message.Requeue:
                 self.channel_backend.send(channel, content)
             except:
-                print("Error processing message with consumer {}:".format(name_that_thing(consumer)))
-                traceback.print_exc()
+                logger.exception("Error processing message with consumer %s:", name_that_thing(consumer))