Code refactoring - Watcher Decision Engine package

This patchset is there to change the code structure.
The objective is to flatten the project file tree by merging
'api/' and 'framework/' into a single package. This also contains
some tidy ups in package naming (like using only singular nouns).

This should only affect file/folder names and their subsequent
import paths wherever they were used.

Change-Id: Ie903ba20ca5cf03b0b42efa60131d1b919b0c2c9

watcher/decision_engine/messaging/audit_endpoint.py

@@ -0,0 +1,44 @@
+# -*- encoding: utf-8 -*-
+# Copyright (c) 2015 b<>com
+#
+# Authors: Jean-Emile DARTOIS <jean-emile.dartois@b-com.com>
+#
+# 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.
+#
+from oslo_log import log
+
+from watcher.decision_engine.command.audit import TriggerAuditCommand
+from watcher.metrics_engine.cluster_model_collector.manager import \
+    CollectorManager
+
+LOG = log.getLogger(__name__)
+
+
+class AuditEndpoint(object):
+    def __init__(self, de):
+        self.de = de
+        self.manager = CollectorManager()
+
+    def do_trigger_audit(self, context, audit_uuid):
+        model_collector = self.manager.get_cluster_model_collector()
+
+        audit = TriggerAuditCommand(self.de, model_collector)
+        audit.execute(audit_uuid, context)
+
+    def trigger_audit(self, context, audit_uuid):
+        LOG.debug("Trigger audit %s" % audit_uuid)
+        self.de.executor.submit(self.do_trigger_audit,
+                                context,
+                                audit_uuid)
+        return audit_uuid

watcher/decision_engine/messaging/command/base.py

@@ -0,0 +1,28 @@
+# -*- encoding: utf-8 -*-
+# Copyright (c) 2015 b<>com
+#
+# Authors: Jean-Emile DARTOIS <jean-emile.dartois@b-com.com>
+#
+# 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.
+#
+import abc
+import six
+
+
+@six.add_metaclass(abc.ABCMeta)
+class BaseDecisionEngineCommand(object):
+    @abc.abstractmethod
+    def execute(self):
+        raise NotImplementedError(
+            "Should have implemented this")  # pragma:no cover

watcher/decision_engine/messaging/event_consumer.py

@@ -0,0 +1,39 @@
+# -*- encoding: utf-8 -*-
+# Copyright (c) 2015 b<>com
+#
+# Authors: Jean-Emile DARTOIS <jean-emile.dartois@b-com.com>
+#
+# 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.
+#
+import abc
+import six
+
+
+@six.add_metaclass(abc.ABCMeta)
+class BaseEventConsumer(object):
+
+    def __init__(self):
+        self._messaging = None
+
+    @property
+    def messaging(self):
+        return self._messaging
+
+    @messaging.setter
+    def messaging(self, e):
+        self._messaging = e
+
+    @abc.abstractmethod
+    def execute(self, request_id, context, data):
+        raise NotImplementedError('Not implemented ...')  # pragma:no cover

watcher/decision_engine/messaging/events.py

@@ -0,0 +1,26 @@
+# -*- encoding: utf-8 -*-
+# Copyright (c) 2015 b<>com
+#
+# Authors: Jean-Emile DARTOIS <jean-emile.dartois@b-com.com>
+#
+# 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.
+#
+
+from enum import Enum
+
+
+class Events(Enum):
+    ALL = '*',
+    ACTION_PLAN = "action_plan"
+    TRIGGER_AUDIT = "trigger_audit"