Add a basic filter for Nova

Change-Id: I2c54418e15c4783f6f062209a7038282bcb66cd8
Signed-off-by: Julien Danjou <julien@danjou.info>

climate/nova/climate_filter.py

@@ -0,0 +1,27 @@
+# Copyright 2013 Julien Danjou <julien@danjou.info>
+#
+# 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.
+
+from nova.scheduler import filters
+
+
+class ClimateFilter(filters.BaseHostFilter):
+    """Climate Filter for nova-scheduler."""
+
+    def host_passes(self, host_state, filter_properties):
+        """Filter based on Climate."""
+        scheduler_hints = filter_properties.get('scheduler_hints') or {}
+        # XXX send host_state + to Climate API
+        return True

tests_nova_scheduler/__init__.py

@@ -0,0 +1,20 @@
+#!/usr/bin/env python
+# -*- encoding: utf-8 -*-
+#
+# Copyright © 2013 Julien Danjou <julien@danjou.info>
+#
+# 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 gettext
+
+gettext.install('nova', unicode=True)

tests_nova_scheduler/test_climate_scheduler.py

@@ -0,0 +1,29 @@
+#!/usr/bin/env python
+# -*- encoding: utf-8 -*-
+#
+# Copyright © 2013 Julien Danjou <julien@danjou.info>
+#
+# 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 unittest
+
+from nova.tests.scheduler import fakes
+from climate.nova import climate_filter
+
+
+class ClimateSchedulerTestCase(unittest.TestCase):
+    def test_climate_scheduler(self):
+        f = climate_filter.ClimateFilter()
+        host = fakes.FakeHostState('host1', 'node1', {})
+        filter_properties = {"scheduler_hints": {"foo": "bar"}}
+        self.assertTrue(f.host_passes(host, filter_properties))

tools/test-requires

@@ -1,3 +1,4 @@
 nose
 mock
 mox
+http://tarballs.openstack.org/nova/nova-master.tar.gz

tox.ini

@@ -10,7 +10,8 @@ setenv = VIRTUAL_ENV={envdir}
          NOSE_OPENSTACK_RED=0.05
          NOSE_OPENSTACK_YELLOW=0.025
          NOSE_OPENSTACK_SHOW_ELAPSED=1
-commands = nosetests --no-path-adjustment
+commands = nosetests --no-path-adjustment --where=tests_nova_scheduler
+           nosetests --no-path-adjustment --where=tests {posargs}
 sitepackages = False
 
 [testenv:cover]