Rename hypervisor to compute

Fix #487

gns3server/compute/vpcs/__init__.py

@@ -0,0 +1,94 @@
+# -*- 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/>.
+
+"""
+VPCS server module.
+"""
+
+import os
+import asyncio
+
+from ..base_manager import BaseManager
+from .vpcs_error import VPCSError
+from .vpcs_vm import VPCSVM
+
+
+class VPCS(BaseManager):
+
+    _VM_CLASS = VPCSVM
+
+    def __init__(self):
+
+        super().__init__()
+        self._free_mac_ids = {}
+        self._used_mac_ids = {}
+
+    @asyncio.coroutine
+    def create_vm(self, *args, **kwargs):
+        """
+        Creates a new VPCS VM.
+
+        :returns: VPCSVM instance
+        """
+
+        vm = yield from super().create_vm(*args, **kwargs)
+        self._free_mac_ids.setdefault(vm.project.id, list(range(0, 255)))
+        try:
+            self._used_mac_ids[vm.id] = self._free_mac_ids[vm.project.id].pop(0)
+        except IndexError:
+            raise VPCSError("Cannot create a new VPCS VM (limit of 255 VMs reached on this host)")
+        return vm
+
+    @asyncio.coroutine
+    def close_vm(self, vm_id, *args, **kwargs):
+        """
+        Closes a VPCS VM.
+
+        :returns: VPCSVM instance
+        """
+
+        vm = self.get_vm(vm_id)
+        if vm_id in self._used_mac_ids:
+            i = self._used_mac_ids[vm_id]
+            self._free_mac_ids[vm.project.id].insert(0, i)
+            del self._used_mac_ids[vm_id]
+        yield from super().close_vm(vm_id, *args, **kwargs)
+        return vm
+
+    def get_mac_id(self, vm_id):
+        """
+        Get an unique VPCS MAC id (offset)
+
+        :param vm_id: VPCS VM identifier
+
+        :returns: VPCS MAC identifier
+        """
+
+        return self._used_mac_ids.get(vm_id, 1)
+
+    @staticmethod
+    def get_legacy_vm_workdir(legacy_vm_id, name):
+        """
+        Returns the name of the legacy working directory 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("vpcs", "pc-{}".format(legacy_vm_id))