Support for sendings settings for the GNS3VM from the GUI

Ref https://github.com/GNS3/gns3-gui/issues/1441

gns3server/controller/gns3vm/__init__.py

@@ -0,0 +1,101 @@
+#!/usr/bin/env python
+#
+# Copyright (C) 2016 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/>.
+
+import sys
+import asyncio
+
+from .vmware_gns3_vm import VMwareGNS3VM
+from .virtualbox_gns3_vm import VirtualBoxGNS3VM
+
+
+class GNS3VM:
+    """
+    Proxy between the controller and the GNS3 VM engine
+    """
+
+    def __init__(self, controller, settings={}):
+        self._controller = controller
+        # Keep instance of the loaded engines
+        self._engines = {}
+        self._settings = {
+            "vmname": None,
+            "auto_stop": False,
+            "headless": False,
+            "enable": False,
+            "engine": "vmware"
+        }
+        self._settings.update(settings)
+
+    def engine_list(self):
+        """
+        :returns: Return list of engines supported by GNS3 for the GNS3VM
+        """
+        virtualbox_informations = {
+            "engine_id": "virtualbox",
+            "name": "VirtualBox",
+            "description": "VirtualBox doesn't support nested virtualization, this means running Qemu based VM could be very slow."
+        }
+        vmware_informations = {
+            "engine_id": "vmware",
+            "description": "VMware is the recommended choice for best performances."
+        }
+        if sys.platform.startswith("darwin"):
+            vmware_informations["name"] = "VMware Fusion"
+        else:
+            vmware_informations["name"] = "VMware Workstation / Player"
+        return [
+            vmware_informations,
+            virtualbox_informations
+        ]
+
+    @property
+    def settings(self):
+        return self._settings
+
+    @settings.setter
+    def settings(self, val):
+        self._settings.update(val)
+        self._controller.save()
+
+    def _get_engine(self, engine):
+        """
+        Load an engine
+        """
+        if engine in self._engines:
+            return self._engines[engine]
+
+        if engine == "vmware":
+            self._engines["vmware"] = VMwareGNS3VM()
+            return self._engines["vmware"]
+        elif engine == "virtualbox":
+            self._engines["virtualbox"] = VirtualBoxGNS3VM()
+            return self._engines["virtualbox"]
+        raise NotImplementedError("The engine {} for the GNS3 VM is not supported".format(engine))
+
+    def __json__(self):
+        return self._settings
+
+    @asyncio.coroutine
+    def list(self, engine):
+        """
+        List VMS for an engine
+        """
+        engine = self._get_engine(engine)
+        vms = []
+        for vm in (yield from engine.list()):
+            vms.append({"vmname": vm["vmname"]})
+        return vms