mirror of https://github.com/GNS3/gns3-server
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88 lines
2.7 KiB
88 lines
2.7 KiB
# -*- coding: utf-8 -*-
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#
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# Copyright (C) 2013 GNS3 Technologies Inc.
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#
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# This program is free software: you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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import imp
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import inspect
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import pkgutil
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import logging
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from gns3server.plugins import IPlugin
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logger = logging.getLogger(__name__)
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class Plugin(object):
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"""Plugin representation for the PluginManager
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"""
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def __init__(self, name, cls):
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self._name = name
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self._cls = cls
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@property
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def name(self):
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return self._name
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@name.setter
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def name(self, new_name):
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self._name = new_name
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#@property
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def cls(self):
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return self._cls
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class PluginManager(object):
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"""Manages plugins
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"""
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def __init__(self, plugin_paths=['plugins']):
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self._plugins = []
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self._plugin_paths = plugin_paths
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def load_plugins(self):
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for _, name, ispkg in pkgutil.iter_modules(self._plugin_paths):
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if (ispkg):
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logger.info("analyzing '{}' package".format(name))
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try:
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file, pathname, description = imp.find_module(name, self._plugin_paths)
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plugin_module = imp.load_module(name, file, pathname, description)
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plugin_classes = inspect.getmembers(plugin_module, inspect.isclass)
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for plugin_class in plugin_classes:
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if issubclass(plugin_class[1], IPlugin):
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# don't instantiate any parent plugins
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if plugin_class[1].__module__ == name:
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logger.info("loading '{}' plugin".format(plugin_class[0]))
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info = Plugin(name=plugin_class[0], cls=plugin_class[1])
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self._plugins.append(info)
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finally:
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if file:
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file.close()
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def get_all_plugins(self):
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return self._plugins
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def activate_plugin(self, plugin):
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plugin_class = plugin.cls()
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plugin_instance = plugin_class()
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logger.info("'{}' plugin activated".format(plugin.name))
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return plugin_instance
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