def setup(self, info):
"""
This is the setup method for the process, called before it
is ran.
:return:
"""
# Setup the resource server and the manager instance
self._logger.info("[+] Setting up the resource manager.")
self.__resources, self.__manager \
= get_server_manager()
# Setup the subscriber instance
self._logger.info("[+] Starting the subscriber.")
self.__subscriber = NodeConsumer(
NodeConsumer.format_url(
info['SUBSCRIBER']
),
self._name,
self.__apps.keys()
)
# Wrapper
self._setup(info)
return
class Plugin(Process):
"""
This is the base class for the plugin objects.
Each plugin must confirm to this template in order
to run within the plugin framework and this application.
Each plugin runs in its own Process, speeding up the speed of the
application.
"""
# Making this class and abstract class to extend.
__metaclass__ = ABCMeta
# This is the process configs that are needed to setup and
# run the task individually.
_configs = None
# This is the name of the process
_name = None
# The plugin id to route on
_id = None
# This is the logger object for the class
_logger = None
# This is the running flag.
_running = True
# Apps in a plugin
# Looks like:
# {
# name : {
# pub : <publisher>,
# sub : <subscriber>,
# resource : <managed resource>,
# queue : <application queue>,
# }
# }
__apps = {
}
# The logstash reference
__logstash = None
# The main subscriber...
__subscriber = None
# The main resource manager
__resources = None
# Manager thread
__resources_thread = None
# Manager object
__manager = None
def __init__(self, name):
"""
This is the base constructor method that receives
:param name: The plugin name
:param tag: The plugin category
:param logstash: The logstash process handle
:return:
"""
# Setup the internals of the object
self._logger = logging.getLogger(
name
)
# Override the super class
Process.__init__(
self,
name=name
)
return
def setup(self, info):
"""
This is the setup method for the process, called before it
is ran.
:return:
"""
# Setup the resource server and the manager instance
self._logger.info("[+] Setting up the resource manager.")
self.__resources, self.__manager \
= get_server_manager()
# Setup the subscriber instance
self._logger.info("[+] Starting the subscriber.")
self.__subscriber = NodeConsumer(
NodeConsumer.format_url(
info['SUBSCRIBER']
),
self._name,
self.__apps.keys()
)
# Wrapper
self._setup(info)
return
@abstractmethod
def _setup(self, info):
"""
Wrapped method for plugins.
:param info:
:return:
"""
raise NotImplemented
def run(self):
"""
This is the default process running method.
:return:
"""
# Start the resource manager
self.__resources_thread = Thread(
target = self.__resources.serve_forever
)
self.__resources_thread.start()
self._logger.info("[+] Starting the resource manager thread.")
# Connect the subscriber.
self._logger.info("[+] Connecting the subscriber...")
self.__subscriber.start()
# We deffer the running task to the _run method.
self._logger.info(
"[+] Entering the run loop for plugin: %s"
%self._name
)
while self._running:
self._run()
self._logger.info(
"[-] Killed the run loop for plugin: %s"
%self._name
)
return
def _run(self):
"""
The default run method for the process.
:return:
"""
for app in self.__apps.values():
app['entry'](app)
return
def kill(self):
"""
This method basically flips the running flag on the
process to kill it.
:return:
"""
self._running = False
self._logger.info(
"[-] Killing the plugin: %s"
%self._name
)
# The disconnection method
self._kill()
# Kill all queues
self._logger.info("[-] Killing all resource queues.")
for app in self.__apps.values():
app['queue'].close()
app['queue'].join_thread()
# kill the resource thread
self._logger("[-] Killing the resource manager thread.")
self.__resources_thread.join()
return
@abstractmethod
def _kill(self):
"""
Disconnects the client
:return:
"""
raise NotImplemented
@staticmethod
def _format(name, app):
"""
Formats the queue name based on the plugin name and the app
:param name: The plugin name
:param app: The sub app to use th queue
:return:
"""
return "{name}.{app}".format(name=name, app=app)
def register(self, name, entry, configs):
"""
Register the application within the plugin.
:param name: The name of the app
:param entry: The entry point of the app
:param configs: The configs for the app
:return:
"""
temp = dict()
# Create the application queue
temp['queue'] = Queue()
# Create a publisher
temp['pub'] = NodePublisher(
NodePublisher.format_url(
configs['COMS']
),
temp['queue'],
name,
configs['name']
)
# Create the managed resource
temp['resource'] = ManagedResource(
name = name,
tag = configs['name']
)
# Register the entry point of the app
temp['entry'] = entry
# We need to register the new queue for this probe
self.__manager.add_queue(
configs['name']
)
# Register the resource client handle
temp['client'] = get_client_manager()
# Add the app in the app db
self.__apps[
configs['name']
] = temp
self._logger.info(
"[+] Added a new probe: {name}".format(
name = configs['name']
)
)
return
def start_app_coms(self, name):
"""
Starts the publisher...
:param name: The app name
:return:
"""
self.__apps[name]['pub'].start()
self._logger.info(
"[+] Starting the probe: {name} coms".format(
name = name
)
)
return
def kill_publishers(self):
"""
Kills the publishers for a plugin.
:return:
"""
self._logger.info("[-] Killing all publishing coms.")
for app in self.__apps.values():
app['pub'].stop()
return
