def __init__(self, argv_options=None, config=None):
'''You can provide a configuration if you don't want to parse the
invocation args or a config file.
:config object config: Is an Namespace (object) with the
kernel configuration
'''
self.kernel = Kernel()
options = default_options
if argv_options is not None:
options += argv_options
if config is None:
config = parse_args_and_config(options)
self.config_services(config)
self.config = config
class App(object):
'''
This class provide an easy way of configure and run a kernel.
::
app = App() # Default configuration
app.run() # This is blocking
'''
def __init__(self, argv_options=None, config=None):
'''You can provide a configuration if you don't want to parse the
invocation args or a config file.
:config object config: Is an Namespace (object) with the
kernel configuration
'''
self.kernel = Kernel()
options = default_options
if argv_options is not None:
options += argv_options
if config is None:
config = parse_args_and_config(options)
self.config_services(config)
self.config = config
def config_services(self, config):
'''Usually you don't have to invoke this method, is invoked in the
``__init__`` method.
This method creates and adds to the kernel que services
indicated in the configuration.
Also configures the ports that those servers are going to use.
:param object config: Is an Namespace (object) with the kernel configuration
'''
if config.zmq_server:
zmq_port = self._guess_port(config, config.zmq_port)
zmq_server = ZMQServer(port=zmq_port)
self.kernel.add_server(zmq_server)
print "* ZMQ Server listening on port: {0}".format(zmq_port)
if config.ws_server:
ws_port = self._guess_port(config, config.ws_port)
ws_server = WSServer(port=ws_port, web_dir=config.web_dir)
self.kernel.add_server(ws_server)
print "* WebSocket Server listening on port: {0}".format(ws_port)
print "* Serving web from: {0}".format(config.web_dir)
def _guess_port(self, config, default=None):
if config.use_random_port:
port_range = (config.min_port, config.max_port)
max_tries = config.port_max_tries
port = get_random_port(port_range=port_range, max_tries=max_tries)
elif default is not None:
port = default
else:
raise Exception("Is impossible to get a free port")
return port
def run(self):
self.kernel.run_forever()
