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Example 5: An introspecting version of Examples 2/3. This creates a simple streaming system, and looks inside to see what components are running/active, and passes the resulting information over a network connection to an Axon Visualisation server. Components used: SimpleServer, TCPClient, ReadFileAdaptor, VorbisDecode, AOAudioPlaybackAdaptor, Introspector

#!/usr/bin/python

from Kamaelia.SimpleServerComponent import SimpleServer
from Kamaelia.Internet.TCPClient import TCPClient
from Kamaelia.vorbisDecodeComponent import VorbisDecode, AOAudioPlaybackAdaptor
from Kamaelia.Util.PipelineComponent import pipeline
import Kamaelia.ReadFileAdaptor
# This next line is new
from Kamaelia.Util.Introspector import Introspector

file_to_stream = "/usr/share/wesnoth/music/wesnoth-1.ogg"
clientServerTestPort = 1501

def AdHocFileProtocolHandler(filename):
    class klass(Kamaelia.ReadFileAdaptor.ReadFileAdaptor):
        def __init__(self,*argv,**argd):
            super(klass,self).__init__(filename, readmode="bitrate", bitrate=400000)
    return klass

# Start the server
SimpleServer(protocol=AdHocFileProtocolHandler(file_to_stream),
             port=clientServerTestPort).activate()

# Start the client
pipeline(
      TCPClient("127.0.0.1",clientServerTestPort),
      VorbisDecode(),
      AOAudioPlaybackAdaptor(),
).activate()

# This next pipeline is new
# Start the introspector and connect to a local visualiser
pipeline(
    Introspector(),
    TCPClient("127.0.0.1", 1500),
).run()


Source: Examples/example5/IntrospectingSimpleStreamingSystem.py

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