def __init__(self): """Creates a new instance of ImportThread and connects to the database. This design pattern is important: since the constructor runs synchonously, it ensures that two threads don't attempt to initialize the database at the same time. """ super(ImportThread, self).__init__(name=__name__) self.log = initLogging(__name__) db = DatabaseWrapper() self.sa_session = db.get_session()
def __init__(self, threads):
self.log = initLogging(__name__)
self.threads = threads
# Subscribe specifically to the 'stop' method passed by cherrypy.
# This lets us cleanly stop all threads executed by the application.
SAEnginePlugin(cherrypy.engine).subscribe()
cherrypy.engine.subscribe("stop", self.stop_threads)
cherrypy.tools.db = SATool()
config = {'/':
{
'tools.db.on': True,
'tools.staticdir.root': os.path.dirname(os.path.realpath(sys.argv[0])),
},
'/static':
{
'tools.staticdir.on': True,
'tools.staticdir.dir': "static",
},
}
cherrypy.tree.mount(Musik(), '/', config=config)
def __init__(self, path):
self.running = False
self.finished = False
self.log = initLogging(__name__)
self.log.info("%s created with path %s" % (__name__, path))
# Set up the Gstreamer pipeline.
self.pipeline = gst.Pipeline()
self.src = gst.element_factory_make("filesrc")
self.dec = gst.element_factory_make("decodebin2")
self.conv = gst.element_factory_make("audioconvert")
self.enc = gst.element_factory_make("vorbisenc")
self.mux = gst.element_factory_make("oggmux")
self.sink = gst.element_factory_make('appsink')
# Register for bus signals.
bus = self.pipeline.get_bus()
bus.add_signal_watch()
bus.connect("message::eos", self._message)
bus.connect("message::error", self._message)
# Configure the input/decoding stage.
print "path is %s" % path
self.src.set_property("location", path)
# The callback to connect the input.
self.dec.connect("pad-added", self._pad_added)
self.dec.connect("no-more-pads", self._no_more_pads)
# And a callback if decoding fails.
self.dec.connect("unknown-type", self._unkown_type)
# Set up the characteristics of the output. We don't want to
# drop any data (nothing is real-time here); we should bound
# the memory usage of the internal queue; and, most
# importantly, setting "sync" to False disables the default
# behavior in which you consume buffers in real time. This way,
# we get data as soon as it's decoded.
self.sink.set_property('drop', False)
self.sink.set_property('max-buffers', BUFFER_SIZE)
self.sink.set_property('sync', False)
# The callback to receive decoded data.
self.sink.set_property('emit-signals', True)
self.sink.connect("new-buffer", self._new_buffer)
# We'll need to know when the stream becomes ready and we get
# its attributes. This semaphore will become available when the
# caps are received. That way, when __init__() returns, the file
# (and its attributes) will be ready for reading.
self.ready_sem = threading.Semaphore(0)
self.caps_handler = self.sink.get_pad("sink").connect(
"notify::caps", self._notify_caps
)
# Link up everything but the decoder (which must be linked only
# when it becomes ready).
self.pipeline.add(self.src, self.dec, self.conv, self.enc, self.mux, self.sink)
self.src.link(self.dec)
self.conv.link(self.enc)
self.enc.link(self.mux)
self.mux.link(self.sink)
# Set up the queue for data and run the main thread.
self.queue = Queue.Queue(QUEUE_SIZE)
self.thread = get_loop_thread()
# This wil get filled with an exception if opening fails.
self.read_exc = None
# Return as soon as the stream is ready!
self.running = True
self.pipeline.set_state(gst.STATE_PLAYING)
self.ready_sem.acquire()
if self.read_exc:
# An error occurred before the stream became ready.
self.log.error("%s" % unicode(self.read_exc))
self.close(True)
raise self.read_exc
def __init__(self): self.log = initLogging(__name__)
log.info(u'Stopping CherryPy Engine') app.stop() log.info(u'Clean up complete') sys.exit(0) # application entry - starts the database connection and dev server if __name__ == '__main__': global log, importThread, app threads = [] # get logging set up log = initLogging(__name__) # TODO: also register for CherryPy shutdown messages log.info(u'Registering for shutdown signals') for sig in [signal.SIGTERM, signal.SIGINT, signal.SIGHUP, signal.SIGQUIT]: signal.signal(sig, cleanup) log.info(u'Starting worker threads') importThread = musik.library.importer.ImportThread() importThread.start() threads.append(importThread) # this is a blocking call log.info(u'Starting Web App') app = musik.web.application.MusikWebApplication(threads=threads)
