| /** |
| * 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. |
| */ |
| |
| package org.apache.ambari.server.controller.gsinstaller; |
| |
| import org.apache.ambari.server.controller.internal.ResourceImpl; |
| import org.apache.ambari.server.controller.spi.Predicate; |
| import org.apache.ambari.server.controller.spi.Request; |
| import org.apache.ambari.server.controller.spi.Resource; |
| import org.apache.ambari.server.controller.utilities.PropertyHelper; |
| |
| import java.util.Set; |
| |
| /** |
| * A host resource provider for a gsInstaller defined cluster. |
| */ |
| public class GSInstallerHostProvider extends GSInstallerResourceProvider{ |
| |
| // Hosts |
| protected static final String HOST_CLUSTER_NAME_PROPERTY_ID = |
| PropertyHelper.getPropertyId("Hosts", "cluster_name"); |
| protected static final String HOST_NAME_PROPERTY_ID = |
| PropertyHelper.getPropertyId("Hosts", "host_name"); |
| protected static final String HOST_STATE_PROPERTY_ID = |
| PropertyHelper.getPropertyId("Hosts", "host_state"); |
| |
| |
| // ----- Constructors ------------------------------------------------------ |
| |
| /** |
| * Construct a resource provider based on the given cluster definition. |
| * |
| * @param clusterDefinition the cluster definition |
| */ |
| public GSInstallerHostProvider(ClusterDefinition clusterDefinition) { |
| super(Resource.Type.Host, clusterDefinition); |
| initHostResources(); |
| } |
| |
| |
| // ----- GSInstallerResourceProvider --------------------------------------- |
| |
| @Override |
| public void updateProperties(Resource resource, Request request, Predicate predicate) { |
| Set<String> propertyIds = getRequestPropertyIds(request, predicate); |
| if (contains(propertyIds, HOST_STATE_PROPERTY_ID)) { |
| String hostName = (String) resource.getPropertyValue(HOST_NAME_PROPERTY_ID); |
| resource.setProperty(HOST_STATE_PROPERTY_ID, getClusterDefinition().getHostState(hostName)); |
| } |
| } |
| |
| |
| // ----- helper methods ---------------------------------------------------- |
| |
| /** |
| * Create the resources based on the cluster definition. |
| */ |
| private void initHostResources() { |
| ClusterDefinition clusterDefinition = getClusterDefinition(); |
| String clusterName = clusterDefinition.getClusterName(); |
| Set<String> hosts = clusterDefinition.getHosts(); |
| |
| for (String hostName : hosts) { |
| Resource host = new ResourceImpl(Resource.Type.Host); |
| host.setProperty(HOST_CLUSTER_NAME_PROPERTY_ID, clusterName); |
| host.setProperty(HOST_NAME_PROPERTY_ID, hostName); |
| |
| addResource(host); |
| } |
| } |
| } |