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Implement DefaultCloudEventCallbackImpl (#1995)
Implement a default callback implementation for Helix cloud event listeners.
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package org.apache.helix.cloud.event; | ||
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/* | ||
* Licensed to the Apache Software Foundation (ASF) under one | ||
* or more contributor license agreements. See the NOTICE file | ||
* distributed with this work for additional information | ||
* regarding copyright ownership. The ASF licenses this file | ||
* to you 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. | ||
*/ | ||
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import org.apache.helix.HelixAdmin; | ||
import org.apache.helix.cloud.event.helix.DefaultCloudEventCallbackImpl; | ||
import org.apache.helix.constants.InstanceConstants; | ||
import org.apache.helix.integration.common.ZkStandAloneCMTestBase; | ||
import org.apache.helix.integration.manager.MockParticipantManager; | ||
import org.apache.helix.util.InstanceValidationUtil; | ||
import org.testng.Assert; | ||
import org.testng.annotations.BeforeClass; | ||
import org.testng.annotations.Test; | ||
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public class TestDefaultCloudEventCallbackImpl extends ZkStandAloneCMTestBase { | ||
private final DefaultCloudEventCallbackImpl _impl = | ||
DefaultCloudEventCallbackImpl.class.newInstance(); | ||
private MockParticipantManager _instanceManager; | ||
private HelixAdmin _admin; | ||
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public TestDefaultCloudEventCallbackImpl() throws IllegalAccessException, InstantiationException { | ||
} | ||
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@BeforeClass | ||
public void beforeClass() throws Exception { | ||
super.beforeClass(); | ||
_instanceManager = _participants[0]; | ||
_admin = _instanceManager.getClusterManagmentTool(); | ||
} | ||
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@Test | ||
public void testDisableInstance() { | ||
Assert.assertTrue(InstanceValidationUtil | ||
.isEnabled(_manager.getHelixDataAccessor(), _instanceManager.getInstanceName())); | ||
_impl.disableInstance(_instanceManager, null); | ||
Assert.assertFalse(InstanceValidationUtil | ||
.isEnabled(_manager.getHelixDataAccessor(), _instanceManager.getInstanceName())); | ||
Assert.assertEquals(_manager.getConfigAccessor() | ||
.getInstanceConfig(CLUSTER_NAME, _instanceManager.getInstanceName()) | ||
.getInstanceDisabledType(), InstanceConstants.InstanceDisabledType.CLOUD_EVENT.name()); | ||
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// Should not disable instance if it is already disabled due to other reasons | ||
// And disabled type should remain unchanged | ||
_admin.enableInstance(CLUSTER_NAME, _instanceManager.getInstanceName(), false); | ||
_impl.disableInstance(_instanceManager, null); | ||
Assert.assertFalse(InstanceValidationUtil | ||
.isEnabled(_manager.getHelixDataAccessor(), _instanceManager.getInstanceName())); | ||
Assert.assertEquals(InstanceValidationUtil | ||
.getInstanceHelixDisabledType(_manager.getHelixDataAccessor(), | ||
_instanceManager.getInstanceName()), | ||
InstanceConstants.InstanceDisabledType.DEFAULT_INSTANCE_DISABLE_TYPE.name()); | ||
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_admin.enableInstance(CLUSTER_NAME, _instanceManager.getInstanceName(), false, | ||
InstanceConstants.InstanceDisabledType.CLOUD_EVENT, null); | ||
} | ||
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@Test(dependsOnMethods = "testDisableInstance") | ||
public void testEnableInstance() { | ||
Assert.assertFalse(InstanceValidationUtil | ||
.isEnabled(_manager.getHelixDataAccessor(), _instanceManager.getInstanceName())); | ||
// Should enable instance if the instance is disabled due to cloud event | ||
_impl.enableInstance(_instanceManager, null); | ||
Assert.assertTrue(InstanceValidationUtil | ||
.isEnabled(_manager.getHelixDataAccessor(), _instanceManager.getInstanceName())); | ||
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// Should not enable instance if it is not disabled due to cloud event | ||
_admin.enableInstance(CLUSTER_NAME, _instanceManager.getInstanceName(), false); | ||
_impl.enableInstance(_instanceManager, null); | ||
Assert.assertFalse(InstanceValidationUtil | ||
.isEnabled(_manager.getHelixDataAccessor(), _instanceManager.getInstanceName())); | ||
_admin.enableInstance(_instanceManager.getClusterName(), _instanceManager.getInstanceName(), | ||
true); | ||
} | ||
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@Test | ||
public void testEnterMaintenanceMode() { | ||
Assert.assertFalse(_admin.isInMaintenanceMode(CLUSTER_NAME)); | ||
_impl.enterMaintenanceMode(_instanceManager, null); | ||
Assert.assertTrue(_admin.isInMaintenanceMode(CLUSTER_NAME)); | ||
} | ||
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@Test(dependsOnMethods = "testEnterMaintenanceMode") | ||
public void testExitMaintenanceMode() { | ||
Assert.assertTrue(_admin.isInMaintenanceMode(CLUSTER_NAME)); | ||
// Should not exit maintenance mode if there is remaining live instance that is disabled due to cloud event | ||
_admin.enableInstance(CLUSTER_NAME, _participants[1].getInstanceName(), false, | ||
InstanceConstants.InstanceDisabledType.CLOUD_EVENT, null); | ||
_impl.exitMaintenanceMode(_instanceManager, null); | ||
Assert.assertTrue(_admin.isInMaintenanceMode(CLUSTER_NAME)); | ||
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// Should exit maintenance mode if there is no remaining live instance that is disabled due to cloud event | ||
_admin.enableInstance(CLUSTER_NAME, _participants[1].getInstanceName(), false, | ||
InstanceConstants.InstanceDisabledType.USER_OPERATION, null); | ||
_impl.exitMaintenanceMode(_instanceManager, null); | ||
Assert.assertFalse(_admin.isInMaintenanceMode(CLUSTER_NAME)); | ||
} | ||
} |