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112 lines
3.5 KiB
112 lines
3.5 KiB
#!/usr/bin/env python
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#
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# Copyright (C) 2016 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 asyncio
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import aiohttp
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from ..config import Config
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from .project import Project
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from .hypervisor import Hypervisor
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class Controller:
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"""The controller manage multiple gns3 hypervisors"""
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def __init__(self):
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self._hypervisors = {}
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self._projects = {}
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def isEnabled(self):
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"""
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:returns: True if current instance is the controller
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of our GNS3 infrastructure.
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"""
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return Config.instance().get_section_config("Server").getboolean("controller")
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@asyncio.coroutine
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def addHypervisor(self, hypervisor_id, **kwargs):
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"""
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Add a server to the dictionnary of hypervisors controlled by GNS3
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:param kwargs: See the documentation of Hypervisor
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"""
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if hypervisor_id not in self._hypervisors:
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hypervisor = Hypervisor(hypervisor_id=hypervisor_id, **kwargs)
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self._hypervisors[hypervisor_id] = hypervisor
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return self._hypervisors[hypervisor_id]
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@property
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def hypervisors(self):
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"""
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:returns: The dictionnary of hypervisors managed by GNS3
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"""
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return self._hypervisors
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def getHypervisor(self, hypervisor_id):
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"""
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Return an hypervisor or raise a 404
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"""
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try:
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return self._hypervisors[hypervisor_id]
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except KeyError:
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raise aiohttp.web.HTTPNotFound(text="Hypervisor ID {} doesn't exist".format(hypervisor_id))
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@asyncio.coroutine
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def addProject(self, project_id=None, **kwargs):
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"""
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Create a project or return an existing project
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:param kwargs: See the documentation of Project
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"""
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if project_id not in self._projects:
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project = Project(project_id=project_id, **kwargs)
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self._projects[project.id] = project
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for hypervisor in self._hypervisors.values():
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yield from project.addHypervisor(hypervisor)
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return self._projects[project.id]
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return self._projects[project_id]
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def getProject(self, project_id):
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"""
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Return a project or raise a 404
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"""
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try:
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return self._projects[project_id]
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except KeyError:
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raise aiohttp.web.HTTPNotFound(text="Project ID {} doesn't exist".format(project_id))
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def removeProject(self, project):
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del self._projects[project.id]
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@property
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def projects(self):
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"""
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:returns: The dictionnary of hypervisors managed by GNS3
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"""
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return self._projects
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@staticmethod
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def instance():
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"""
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Singleton to return only on instance of Controller.
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:returns: instance of Controller
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"""
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if not hasattr(Controller, '_instance') or Controller._instance is None:
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Controller._instance = Controller()
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return Controller._instance
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