dccce05b86
this change implements ambari alerts health checks. ambari service checks seems to be harmful in case of unhealthy clusters, so implementation of that will be postponed. Partially-implements blueprint: cluster-verification Change-Id: I4898d44e392944cdddbd14154738b8935a9b6da4
120 lines
4.2 KiB
Python
120 lines
4.2 KiB
Python
# Copyright (c) 2016 Mirantis Inc.
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
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# implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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import mock
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import six
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import testtools
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from sahara.plugins.ambari import health
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from sahara.service.health import health_check_base
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from sahara.tests.unit import base
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class TestAmbariHealthCheck(base.SaharaTestCase):
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def _standard_negative_test(self, mockclient, return_value, col, count):
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mockclient.return_value = return_value
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pr = health.AlertsProvider(mock.Mock())
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service = return_value[0].get('Alert').get('service_name')
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expected_exc = health_check_base.YellowHealthError
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if col == 'RED':
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expected_exc = health_check_base.RedHealthError
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with testtools.ExpectedException(expected_exc):
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try:
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health.AmbariServiceHealthCheck(
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mock.Mock(extra={}), pr, service).check_health()
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except Exception as e:
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self.assertEqual(
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"Cluster health is %s. Reason: "
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"Ambari Monitor has responded that cluster "
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"has %s alert(s)" % (col, count), six.text_type(e))
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raise
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@mock.patch('sahara.plugins.ambari.client.AmbariClient.__init__')
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@mock.patch('sahara.plugins.ambari.client.AmbariClient.close')
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@mock.patch('sahara.plugins.ambari.client.AmbariClient.get_alerts_data')
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@mock.patch('sahara.plugins.utils.get_instance')
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def test_check_health(self, get_instance, alerts_response, close, init):
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init.return_value = None
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alerts_response.return_value = [
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{
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'Alert': {
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'state': 'OK',
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'service_name': 'ZOOKEEPER'
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}
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}
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]
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result = health.AmbariServiceHealthCheck(
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mock.Mock(extra={}), health.AlertsProvider(mock.Mock()),
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'ZOOKEEPER').check_health()
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self.assertEqual('No alerts found', result)
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self._standard_negative_test(alerts_response, [
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{
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'Alert': {
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'state': 'WARNING',
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'service_name': 'ZOOKEEPER'
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}
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}
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], 'YELLOW', "1 warning")
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self._standard_negative_test(alerts_response, [
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{
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'Alert': {
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'state': 'CRITICAL',
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'service_name': 'ZOOKEEPER'
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}
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}
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], 'RED', "1 critical")
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# not important service: only contribute as yellow
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self._standard_negative_test(alerts_response, [
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{
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'Alert': {
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'state': 'CRITICAL',
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'service_name': 'Kafka'
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}
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}
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], 'YELLOW', "1 warning")
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self._standard_negative_test(alerts_response, [
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{
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'Alert': {
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'state': 'CRITICAL',
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'service_name': 'ZOOKEEPER'
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},
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},
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{
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'Alert': {
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'state': 'WARNING',
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'service_name': 'ZOOKEEPER'
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}
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}
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], 'RED', "1 critical and 1 warning")
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alerts_response.side_effect = [ValueError(
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"OOUCH!")]
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with testtools.ExpectedException(health_check_base.RedHealthError):
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try:
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health.AmbariHealthCheck(
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mock.Mock(extra={}), health.AlertsProvider(mock.Mock())
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).check_health()
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except Exception as e:
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self.assertEqual(
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"Cluster health is RED. Reason: "
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"Can't get response from Ambari Monitor: OOUCH!",
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six.text_type(e))
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raise
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