| /* |
| * 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.collector; |
| |
| import org.apache.knox.gateway.topology.discovery.cm.ServiceModel; |
| import org.apache.knox.gateway.topology.discovery.cm.ServiceURLCollector; |
| |
| import java.util.ArrayList; |
| import java.util.Collections; |
| import java.util.List; |
| import java.util.Map; |
| |
| /** |
| * Base ServiceURLCollector implementation |
| */ |
| public abstract class AbstractURLCollector implements ServiceURLCollector { |
| |
| @Override |
| public List<String> collect(Map<String, List<ServiceModel>> roleModels) { |
| List<String> urls; |
| |
| if (roleModels.isEmpty()) { |
| urls = Collections.emptyList(); |
| } else if (roleModels.size() == 1) { |
| urls = new ArrayList<>(); |
| List<ServiceModel> models = roleModels.values().iterator().next(); |
| urls.addAll(getURLs(models)); |
| } else { |
| urls = getURLs(roleModels); |
| } |
| return urls; |
| } |
| |
| protected List<String> getURLs(Map<String, List<ServiceModel>> roleModels) { |
| List<String> urls = new ArrayList<>(); |
| |
| for (List<ServiceModel> models : roleModels.values()) { |
| urls.addAll(getURLs(models)); |
| } |
| |
| return urls; |
| } |
| |
| protected List<String> getURLs(List<ServiceModel> roleModels) { |
| List<String> urls = new ArrayList<>(); |
| |
| for (ServiceModel model : roleModels) { |
| urls.add(model.getServiceUrl()); |
| } |
| |
| return urls; |
| } |
| |
| } |