203 lines
8.8 KiB
Python
203 lines
8.8 KiB
Python
#!/usr/bin/python3
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# -*- coding: utf-8 -*-
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# Author: İsmail BAŞARAN <ismail.basaran@tubitak.gov.tr> <basaran.ismaill@gmail.com>
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# Author: Volkan Şahin <volkansah.in> <bm.volkansahin@gmail.com>
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import imp
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import os
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from base.Scope import Scope
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from base.plugin.Plugin import Plugin
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from base.plugin.PluginQueue import PluginQueue
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from base.model.PluginKillSignal import PluginKillSignal
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from base.model.PluginBean import PluginBean
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from base.model.safe_mode import SafeMode
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# TODO create base abstract class
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class PluginManager(object):
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"""docstring for PluginManager"""
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# implement logger
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def __init__(self):
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super(PluginManager, self).__init__()
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self.scope = Scope.getInstance()
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self.configManager = self.scope.getConfigurationManager()
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self.db_service = self.scope.getDbService()
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self.plugins = []
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self.pluginQueueDict = dict()
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self.logger = self.scope.getLogger()
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self.message_manager = self.scope.getMessageManager()
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self.delayed_profiles = {}
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self.delayed_tasks = {}
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# TODO version?
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def loadPlugins(self):
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"""
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This method loads plugins
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"""
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self.logger.info('[PluginManager] Loading plugins...')
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self.plugins = []
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self.logger.debug('[PluginManager] Lookup for possible plugins...')
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try:
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possible_plugins = os.listdir(self.configManager.get("PLUGIN", "pluginFolderPath"))
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self.logger.debug('[PluginManager] Possible plugins: {} '.format(str(possible_plugins)))
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for plugin_name in possible_plugins:
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location = os.path.join(self.configManager.get("PLUGIN", "pluginFolderPath"), plugin_name)
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if not os.path.isdir(location) or not self.configManager.get("PLUGIN", "mainModuleName") + ".py" in os.listdir(location):
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self.logger.debug('It is not a plugin location ! There is no main module - {}'.format(str(location)))
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continue
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try:
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self.loadSinglePlugin(plugin_name)
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except Exception as e:
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self.logger.error('[PluginManager] Exception occurred when loading plugin ! Plugin name : {} .Error Message: {}'.format(str(plugin_name), str(e)))
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self.logger.info('[PluginManager] Loaded plugins successfully.')
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except Exception as e:
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self.logger.warning('[PluginManager] Plugin folder path not found. Error Message: {}'.format(str(e)))
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def loadSinglePlugin(self, plugin_name):
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# TODO check already loaded plugin
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self.pluginQueueDict[plugin_name] = PluginQueue()
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plugin = Plugin(plugin_name, self.pluginQueueDict[plugin_name])
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plugin.setDaemon(True)
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plugin.start()
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self.plugins.append(plugin)
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self.logger.debug('[PluginManager] New plugin was loaded. Plugin Name: {}'.format(plugin_name))
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if len(self.delayed_profiles) > 0:
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self.pluginQueueDict[plugin_name].put(self.delayed_profiles[plugin_name], 1)
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self.logger.debug('[PluginManager] Delayed profile was found for this plugin. It will be run.')
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if len(self.delayed_tasks) > 0:
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self.pluginQueueDict[plugin_name].put(self.delayed_tasks[plugin_name], 1)
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self.logger.debug('[PluginManager] Delayed task was found for this plugin. It will be run.')
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def findCommand(self, pluginName, commandId):
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location = os.path.join(self.configManager.get("PLUGIN", "pluginFolderPath"), pluginName)
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if os.path.isdir(location) and commandId + ".py" in os.listdir(location):
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info = imp.find_module(commandId, [location])
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return imp.load_module(commandId, *info)
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else:
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self.logger.warning('Command id -' + commandId + ' - not found')
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return None
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def processTask(self, task):
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##
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scope = Scope().getInstance()
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self.messenger = scope.getMessenger()
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##
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try:
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plugin_name = task.get_plugin().get_name().lower()
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plugin_ver = task.get_plugin().get_version()
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if plugin_name in self.pluginQueueDict:
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self.pluginQueueDict[plugin_name].put(task, 1)
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else:
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self.logger.warning('[PluginManager] {} plugin not found. Task was delayed. Ahenk will request plugin from Lider if distribution available'.format(plugin_name))
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self.delayed_tasks[plugin_name] = task
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msg = self.message_manager.missing_plugin_message(PluginBean(name=plugin_name, version=plugin_ver))
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self.messenger.send_direct_message(msg)
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except Exception as e:
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self.logger.error('[PluginManager] Exception occurred while processing task. Error Message: {}'.format(str(e)))
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def reloadPlugins(self):
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try:
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self.logger.info('[PluginManager] Reloading plugins... ')
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kill_sgnl = PluginKillSignal()
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for p_queue in self.pluginQueueDict:
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p_queue.put(kill_sgnl)
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self.plugins = []
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self.loadPlugins()
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self.logger.info('[PluginManager] Plugin reloaded successfully.')
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except Exception as e:
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self.logger.error('[PluginManager] Exception occurred when reloading plugins ' + str(e))
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def findPolicyModule(self, plugin_name):
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location = os.path.join(self.configManager.get("PLUGIN", "pluginFolderPath"), plugin_name)
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if os.path.isdir(location) and "policy.py" in os.listdir(location):
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info = imp.find_module("policy", [location])
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return imp.load_module("policy", *info)
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else:
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self.logger.warning('[PluginManager] policy.py not found Plugin Name : ' + str(plugin_name))
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return None
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def processPolicy(self, policy):
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self.logger.info('[PluginManager] Processing policies...')
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username = policy.username
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ahenk_profiles = policy.ahenk_profiles
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user_profiles = policy.user_profiles
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if ahenk_profiles is not None:
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self.logger.info('[PluginManager] Working on Ahenk profiles...')
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for profile in ahenk_profiles:
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profile.set_username(None)
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self.process_profile(profile)
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if user_profiles is not None:
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self.logger.info('[PluginManager] Working on User profiles...')
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for profile in user_profiles:
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profile.set_username(username)
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self.process_profile(profile)
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def process_profile(self, profile):
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##
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scope = Scope().getInstance()
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self.messenger = scope.getMessenger()
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##
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try:
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plugin = profile.get_plugin()
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plugin_name = plugin.get_name()
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plugin_ver = plugin.get_version()
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if plugin_name in self.pluginQueueDict:
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self.pluginQueueDict[plugin_name].put(profile, 1)
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else:
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self.logger.warning('[PluginManager] {} plugin not found. Profile was delayed. Ahenk will request plugin from Lider if distribution available'.format(plugin_name))
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self.delayed_profiles[plugin_name] = profile
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msg = self.message_manager.missing_plugin_message(PluginBean(name=plugin_name, version=plugin_ver))
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self.messenger.send_direct_message(msg)
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except Exception as e:
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self.logger.error('[PluginManager] Exception occurred while processing profile. Error Message: {}'.format(str(e)))
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def checkPluginExists(self, plugin_name, version=None):
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criteria = ' name=\'' + plugin_name + '\''
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if version is not None:
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criteria += ' and version=\'' + str(version) + '\''
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result = self.db_service.select('plugin', 'name', criteria)
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if result is None:
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return False
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else:
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return True
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def find_safe_mode_module(self, plugin_name):
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location = os.path.join(self.configManager.get("PLUGIN", "pluginFolderPath"), plugin_name)
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if os.path.isdir(location) and "safe.py" in os.listdir(location):
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info = imp.find_module("safe", [location])
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return imp.load_module("safe", *info)
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else:
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self.logger.warning('[PluginManager] safe.py not found Plugin Name : ' + str(plugin_name))
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return None
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def process_safe_mode(self, username):
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for plugin_name in self.pluginQueueDict:
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try:
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self.pluginQueueDict[plugin_name].put(SafeMode(username), 1)
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except Exception as e:
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self.logger.error('Exception occured when switching safe mode ' + str(e))
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def reloadSinglePlugin(self, pluginName):
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# Not implemented yet
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pass
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def checkCommandExist(self, pluginName, commandId):
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# Not implemented yet
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pass
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def printQueueSize(self):
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print("size " + str(len(self.pluginQueueDict)))
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