Ahenk/opt/ahenk/base/plugin/Plugin.py

#!/usr/bin/python3
# -*- coding: utf-8 -*-
# Author: İsmail BAŞARAN <ismail.basaran@tubitak.gov.tr> <basaran.ismaill@gmail.com>
import threading
import subprocess
from base.Scope import Scope
from base.model.Response import Response
from base.model.MessageType import MessageType
from base.model.MessageCode import MessageCode
from base.messaging.Messaging import Messaging


class Context(object):
    def __init__(self):
        self.data = {}

    def put(self, var_name, data):
        self.data[var_name] = data

    def get(self, var_name):
        return self.data[var_name]

    def empty_data(self):
        self.data = {}

    def execute(self, command):
        return subprocess.call(command, shell=True)


class Plugin(threading.Thread):
    """
        This is a thread inherit class and have a queue.
        Plugin class responsible for processing TASK or USER PLUGIN PROFILE.
    """

    def __init__(self, name, InQueue):
        threading.Thread.__init__(self)
        self.name = name
        self.InQueue = InQueue

        scope = Scope.getInstance()
        self.logger = scope.getLogger()
        self.response_queue = scope.getResponseQueue()
        self.messaging = scope.getMessageManager()
        self.messager =None

        self.keep_run = True
        self.context = Context()

    def run(self):

        while self.keep_run:
            try:
                item_obj = self.InQueue.get(block=True)
                obj_name = item_obj.obj_name
                print(obj_name)
                if obj_name == "TASK":
                    command = Scope.getInstance().getPluginManager().findCommand(self.getName(), item_obj.command_cls_id)
                    command.handle_task(item_obj, self.context)
                    # TODO create response message from context and item_obj. item_obj is task

                    #TODO Message Code keep
                    response = Response(type=MessageType.TASK_STATUS, id=item_obj.id, code=MessageCode.TASK_PROCESSED, message='__message__', data=self.context.get('data'), content_type=self.context.get('content_type'))
                    #self.response_queue.put(self.messaging.response_msg(response)) #TODO DEBUG
                    Scope.getInstance().getMessager().send_direct_message(self.messaging.response_msg(response)) #TODO REMOVE

                    # Empty context for next use
                    self.context.empty_data()

                elif obj_name == "PROFILE":
                    plugin = item_obj.plugin
                    plugin_name = plugin.name
                    profile_data = item_obj.profile_data
                    policy_module = Scope.getInstance().getPluginManager().findPolicyModule(plugin_name)

                    self.context.put('username', item_obj.get_username())

                    policy_module.handle_policy(profile_data, self.context)

                    #TODO Message Code keep
                    response = Response(type=self.context.get('message_type'), id=item_obj.id, code=self.context.get('message_code'), message=self.context.get('message'), data=self.context.get('data'), content_type=self.context.get('content_type'), execution_id='get_execution_id')
                    #self.response_queue.put(self.messaging.response_msg(response)) #TODO DEBUG
                    Scope.getInstance().getMessager().send_direct_message(self.messaging.response_msg(response))#TODO REMOVE

                    # Empty context for next use
                    self.context.empty_data()


                elif obj_name == "KILL_SIGNAL":
                    self.keep_run = False
                    self.logger.debug('[Plugin] Killing queue ! Plugin Name : ' + str(self.name))
                else:
                    self.logger.warning("[Plugin] Not supported object type " + obj_name)
            except Exception as e:
                # TODO error log here
                self.logger.error("[Plugin] Plugin running exception " + str(e))

    def getName(self):
        return self.name