Implement openstack exporter test

zaza/openstack/charm_tests/openstack_exporter/__init__.py

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+# Copyright 2020 Canonical Ltd.
+#
+# 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.
+
+"""Collection of code for setting up and testing openstack exporter."""

zaza/openstack/charm_tests/openstack_exporter/tests.py

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+#!/usr/bin/env python3
+
+# Copyright 2020 Canonical Ltd.
+#
+# 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.
+
+"""Encapsulate Openstack Exporter testing."""
+
+import requests
+import zaza.charm_lifecycle.utils as lifecycle_utils
+import zaza.model
+import zaza.openstack.charm_tests.test_utils as test_utils
+
+
+class OpenstackExporterTest(test_utils.OpenStackBaseTest):
+    """Class for Openstack Exporter tests."""
+
+    @classmethod
+    def setUpClass(cls):
+        """Run class setup for running hacluster tests."""
+        cls.model_name = zaza.model.get_juju_model()
+        cls.test_config = lifecycle_utils.get_charm_config(fatal=False)
+
+    @staticmethod
+    def get_internal_ips(application, model_name):
+        """Return the internal ip addresses an application."""
+        status = zaza.model.get_status(model_name=model_name)
+        units = status['applications'][application]["units"]
+        return [v.address for v in units.values()]
+
+    def get_openstack_exporter_ips(self):
+        """Return the internal ip addresses of the openstack exporter units."""
+        return self.get_internal_ips("openstack-exporter", self.model_name)
+
+    def test_openstack_exporter(self):
+        """Test gathering metrics from openstack exporter."""
+        for ip in self.get_openstack_exporter_ips():
+            response = requests.get(f"http://{ip}:9180/metrics")
+            response.raise_for_status()