mirror of
https://github.com/GNS3/gns3-server
synced 2024-12-25 16:28:11 +00:00
98 lines
2.7 KiB
Python
98 lines
2.7 KiB
Python
# -*- coding: utf-8 -*-
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#
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# Copyright (C) 2015 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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"""
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IOU server module.
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"""
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import os
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import asyncio
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from ..base_manager import BaseManager
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from .iou_error import IOUError
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from .iou_vm import IOUVM
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import logging
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log = logging.getLogger(__name__)
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class IOU(BaseManager):
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_NODE_CLASS = IOUVM
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_NODE_TYPE = "iou"
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def __init__(self):
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super().__init__()
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self._free_application_ids = list(range(1, 512))
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self._used_application_ids = {}
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@asyncio.coroutine
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def create_node(self, *args, **kwargs):
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"""
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Creates a new IOU VM.
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:returns: IOUVM instance
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"""
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node = yield from super().create_node(*args, **kwargs)
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try:
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self._used_application_ids[node.id] = self._free_application_ids.pop(0)
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except IndexError:
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raise IOUError("Cannot create a new IOU VM (limit of 512 VMs reached on this host)")
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return node
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@asyncio.coroutine
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def close_node(self, node_id, *args, **kwargs):
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"""
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Closes an IOU VM.
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:returns: IOUVM instance
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"""
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node = self.get_node(node_id)
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if node_id in self._used_application_ids:
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i = self._used_application_ids[node_id]
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self._free_application_ids.insert(0, i)
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del self._used_application_ids[node_id]
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yield from super().close_node(node_id, *args, **kwargs)
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return node
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def get_application_id(self, node_id):
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"""
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Get an unique application identifier for IOU.
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:param node_id: Node identifier
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:returns: IOU application identifier
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"""
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return self._used_application_ids.get(node_id, 1)
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@staticmethod
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def get_legacy_vm_workdir(legacy_vm_id, name):
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"""
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Returns the name of the legacy working directory (pre 1.3) name for a node.
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:param legacy_vm_id: legacy node identifier (integer)
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:param name: Node name (not used)
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:returns: working directory name
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"""
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return os.path.join("iou", "device-{}".format(legacy_vm_id))
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