| /* |
| * 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.knox.gateway.topology.discovery.cm.model.hdfs; |
| |
| import com.cloudera.api.swagger.client.ApiException; |
| import com.cloudera.api.swagger.model.ApiConfigList; |
| import com.cloudera.api.swagger.model.ApiRole; |
| import com.cloudera.api.swagger.model.ApiService; |
| import com.cloudera.api.swagger.model.ApiServiceConfig; |
| import org.apache.knox.gateway.topology.discovery.cm.ServiceModel; |
| import org.apache.knox.gateway.topology.discovery.cm.ServiceModelGeneratorHandleResponse; |
| |
| import java.util.Map; |
| |
| public class WebHdfsServiceModelGenerator extends HdfsUIServiceModelGenerator { |
| private static final String SERVICE = "WEBHDFS"; |
| private static final String WEBHDFS_SUFFIX = "/webhdfs"; |
| |
| static final String WEBHDFS_ENABLED = "dfs_webhdfs_enabled"; |
| |
| @Override |
| public String getService() { |
| return SERVICE; |
| } |
| |
| @Override |
| public ServiceModel.Type getModelType() { |
| return ServiceModel.Type.API; |
| } |
| |
| @Override |
| public ServiceModelGeneratorHandleResponse handles(ApiService service, ApiServiceConfig serviceConfig, ApiRole role, ApiConfigList roleConfig) { |
| final ServiceModelGeneratorHandleResponse response = super.handles(service, serviceConfig, role, roleConfig); |
| if (response.handled()) { |
| final String webHdfsEnabled = getServiceConfigValue(serviceConfig, WEBHDFS_ENABLED); |
| if (webHdfsEnabled == null) { |
| response.addConfigurationIssue("Missing configuration: " + WEBHDFS_ENABLED); |
| } else if (!Boolean.parseBoolean(webHdfsEnabled)) { |
| response.addConfigurationIssue("Invalid configuration: " + WEBHDFS_ENABLED + ". Expected=true; Found=" + webHdfsEnabled); |
| } |
| } |
| return response; |
| } |
| |
| @Override |
| public ServiceModel generateService(ApiService service, ApiServiceConfig serviceConfig, ApiRole role, ApiConfigList roleConfig) throws ApiException { |
| ServiceModel parent = super.generateService(service, serviceConfig, role, roleConfig); |
| String serviceUrl = parent.getServiceUrl() + WEBHDFS_SUFFIX; |
| |
| ServiceModel model = createServiceModel(serviceUrl); |
| model.addServiceProperty(WEBHDFS_ENABLED, getServiceConfigValue(serviceConfig, WEBHDFS_ENABLED)); |
| |
| // Add parent model metadata |
| addParentModelMetadata(model, parent); |
| |
| return model; |
| } |
| |
| private void addParentModelMetadata(final ServiceModel model, final ServiceModel parent) { |
| // Add parent model properties |
| for (Map.Entry<String, String> parentProp : parent.getServiceProperties().entrySet()) { |
| model.addServiceProperty(parentProp.getKey(), parentProp.getValue()); |
| } |
| |
| // Add parent role properties |
| for (Map.Entry<String, Map<String, String>> parentProps : parent.getRoleProperties().entrySet()) { |
| for (Map.Entry<String, String> prop : parentProps.getValue().entrySet()) { |
| model.addRoleProperty(parentProps.getKey(), prop.getKey(), prop.getValue()); |
| } |
| } |
| } |
| |
| } |