device_driver: base class and noop driver

Change-Id: Id8239d36acc74ca2da001ae56b6bf188c4b175a9

tacker/tests/unit/services/vm/drivers/noop.py

@@ -0,0 +1,73 @@
+# vim: tabstop=4 shiftwidth=4 softtabstop=4
+#
+# Copyright 2013, 2014 Intel Corporation.
+# Copyright 2013, 2014 Isaku Yamahata <isaku.yamahata at intel com>
+#                                     <isaku.yamahata at gmail com>
+# All Rights Reserved.
+#
+#
+#    Licensed under the Apache License, Version 2.0 (the "License"); you may
+#    not use this file except in compliance with the License. You may obtain
+#    a copy of the License at
+#
+#         http://www.apache.org/licenses/LICENSE-2.0
+#
+#    Unless required by applicable law or agreed to in writing, software
+#    distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+#    WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+#    License for the specific language governing permissions and limitations
+#    under the License.
+#
+# @author: Isaku Yamahata, Intel Corporation.
+# TODO(yamahata): once unittests are impletemted, move this there
+import uuid
+
+from tacker.openstack.common import log as logging
+from tacker.vm.drivers import abstract_driver
+
+
+LOG = logging.getLogger(__name__)
+
+
+class DeviceNoop(abstract_driver.DeviceAbstractDriver):
+
+    """Noop driver of hosting device for tests."""
+
+    def __init__(self):
+        super(DeviceNoop, self).__init__()
+        self._instances = set()
+
+    def get_type(self):
+        return 'noop'
+
+    def get_name(self):
+        return 'noop'
+
+    def get_description(self):
+        return 'Nuetron Device Noop driver'
+
+    def create(self, **kwargs):
+        LOG.debug(_('create %s'), kwargs)
+        instance_id = str(uuid.uuid4())
+        self._instances.add(instance_id)
+        return instance_id
+
+    def create_wait(self, plugin, context, device_id):
+        LOG.debug(_('create_wait %s'), device_id)
+
+    def update(self, plugin, context, device_id, **kwargs):
+        LOG.debug(_('update device_id %(devcie_id)s kwargs %(kwargs)s'),
+                  {'device_id': device_id, 'kwargs': kwargs})
+        if device_id not in self._instances:
+            LOG.debug(_('not found'))
+            raise ValueError('No instance %s' % device_id)
+
+    def update_wait(self, plugin, context, device_id):
+        LOG.debug(_('update_wait %s'), device_id)
+
+    def delete(self, plugin, context, device_id):
+        LOG.debug(_('delete %s'), device_id)
+        self._instances.remove(device_id)
+
+    def delete_wait(self, plugin, context, device_id):
+        LOG.debug(_('delete_wait %s'), device_id)

tacker/vm/drivers/abstract_driver.py

@@ -0,0 +1,69 @@
+# vim: tabstop=4 shiftwidth=4 softtabstop=4
+#
+# Copyright 2013, 2014 Intel Corporation.
+# Copyright 2013, 2014 Isaku Yamahata <isaku.yamahata at intel com>
+#                                     <isaku.yamahata at gmail com>
+# All Rights Reserved.
+#
+#
+#    Licensed under the Apache License, Version 2.0 (the "License"); you may
+#    not use this file except in compliance with the License. You may obtain
+#    a copy of the License at
+#
+#         http://www.apache.org/licenses/LICENSE-2.0
+#
+#    Unless required by applicable law or agreed to in writing, software
+#    distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+#    WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+#    License for the specific language governing permissions and limitations
+#    under the License.
+#
+# @author: Isaku Yamahata, Intel Corporation.
+
+import abc
+
+import six
+
+from tacker.api import extensions
+
+
+@six.add_metaclass(abc.ABCMeta)
+class DeviceAbstractDriver(extensions.PluginInterface):
+
+    @abc.abstractmethod
+    def get_type(self):
+        """Return one of predefined type of the hosting device drivers."""
+        pass
+
+    @abc.abstractmethod
+    def get_name(self):
+        """Return a symbolic name for the service VM plugin."""
+        pass
+
+    @abc.abstractmethod
+    def get_description(self):
+        pass
+
+    @abc.abstractmethod
+    def create(self, plugin, context, device):
+        """Create device and return its id."""
+
+    @abc.abstractmethod
+    def create_wait(self, plugin, context, device_id):
+        """wait for device creation to complete."""
+
+    @abc.abstractmethod
+    def update(self, plugin, context, device):
+        pass
+
+    @abc.abstractmethod
+    def update_wait(self, plugin, context, device_id):
+        pass
+
+    @abc.abstractmethod
+    def delete(self, plugin, context, device_id):
+        pass
+
+    @abc.abstractmethod
+    def delete_wait(self, plugin, context, device_id):
+        pass