Rename hypervisor to compute

Fix #487

gns3server/compute/project_manager.py

@@ -0,0 +1,110 @@
+# -*- 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/>.
+
+import aiohttp
+from .project import Project
+from uuid import UUID
+
+
+class ProjectManager:
+
+    """
+    This singleton keeps track of available projects.
+    """
+
+    def __init__(self):
+
+        self._projects = {}
+
+    @classmethod
+    def instance(cls):
+        """
+        Singleton to return only one instance of ProjectManager.
+
+        :returns: instance of ProjectManager
+        """
+
+        if not hasattr(cls, "_instance"):
+            cls._instance = cls()
+        return cls._instance
+
+    @property
+    def projects(self):
+        """
+        Returns all projects.
+
+        :returns: Project instances
+        """
+
+        return self._projects.values()
+
+    def get_project(self, project_id):
+        """
+        Returns a Project instance.
+
+        :param project_id: Project identifier
+
+        :returns: Project instance
+        """
+
+        try:
+            UUID(project_id, version=4)
+        except ValueError:
+            raise aiohttp.web.HTTPBadRequest(text="Project ID {} is not a valid UUID".format(project_id))
+
+        if project_id not in self._projects:
+            raise aiohttp.web.HTTPNotFound(text="Project ID {} doesn't exist".format(project_id))
+        return self._projects[project_id]
+
+    def create_project(self, name=None, project_id=None, path=None, temporary=False):
+        """
+        Create a project and keep a references to it in project manager.
+
+        See documentation of Project for arguments
+        """
+
+        if project_id is not None and project_id in self._projects:
+            return self._projects[project_id]
+        project = Project(name=name, project_id=project_id, path=path, temporary=temporary)
+        self._projects[project.id] = project
+        return project
+
+    def remove_project(self, project_id):
+        """
+        Removes a Project instance from the list of projects in use.
+
+        :param project_id: Project identifier
+        """
+
+        if project_id not in self._projects:
+            raise aiohttp.web.HTTPNotFound(text="Project ID {} doesn't exist".format(project_id))
+        del self._projects[project_id]
+
+    def check_hardware_virtualization(self, source_vm):
+        """
+        Checks if hardware virtualization can be used.
+
+        :returns: boolean
+        """
+
+        for project in self._projects.values():
+            for vm in project.vms:
+                if vm == source_vm:
+                    continue
+                if vm.hw_virtualization and vm.__class__.__name__ != source_vm.__class__.__name__:
+                    return False
+        return True