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gns3-server/gns3server/modules/iou/__init__.py

80 lines
2.3 KiB

# -*- coding: utf-8 -*-
#
# Copyright (C) 2015 GNS3 Technologies Inc.
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
"""
IOU server module.
"""
import os
import asyncio
from ..base_manager import BaseManager
from .iou_error import IOUError
from .iou_vm import IOUVM
class IOU(BaseManager):
_VM_CLASS = IOUVM
def __init__(self):
super().__init__()
self._free_application_ids = list(range(1, 512))
self._used_application_ids = {}
@asyncio.coroutine
def create_vm(self, *args, **kwargs):
vm = yield from super().create_vm(*args, **kwargs)
try:
self._used_application_ids[vm.id] = self._free_application_ids.pop(0)
except IndexError:
raise IOUError("No mac address available")
return vm
@asyncio.coroutine
def close_vm(self, vm_id, *args, **kwargs):
vm = self.get_vm(vm_id)
i = self._used_application_ids[vm_id]
self._free_application_ids.insert(0, i)
del self._used_application_ids[vm_id]
yield from super().close_vm(vm_id, *args, **kwargs)
return vm
def get_application_id(self, vm_id):
"""
Get an unique IOU mac id
:param vm_id: ID of the IOU VM
:returns: IOU MAC id
"""
return self._used_application_ids.get(vm_id, 1)
@staticmethod
def get_legacy_vm_workdir(legacy_vm_id, name):
"""
Returns the name of the legacy working directory (pre 1.3) name for a VM.
:param legacy_vm_id: legacy VM identifier (integer)
:param name: VM name (not used)
:returns: working directory name
"""
return os.path.join("iou", "device-{}".format(legacy_vm_id))