Java tutorial
/** Copyright 2014 OpenSearchServer, Inc. * http://www.opensearchserver.com * * Licensed 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 com.opensearchserver.hadse; import java.util.Collection; import java.util.Map; import org.springframework.http.HttpEntity; import org.springframework.http.HttpStatus; import org.springframework.http.ResponseEntity; import org.springframework.stereotype.Controller; import org.springframework.web.bind.annotation.RequestMapping; import org.springframework.web.bind.annotation.RequestMethod; import org.springframework.web.bind.annotation.ResponseBody; import com.opensearchserver.hadse.cluster.ClusterCatalog; import com.opensearchserver.hadse.cluster.NodeItem; import com.opensearchserver.hadse.index.IndexItem; @Controller public class RootController { public class RootResponse { final private Collection<NodeItem> nodes; final private Map<String, IndexItem> indexes; RootResponse() { nodes = ClusterCatalog.get(); indexes = IndexItem.getMap(); } final public Collection<NodeItem> getNodes() { return nodes; } final public Map<String, IndexItem> getIndex() { return indexes; } } @RequestMapping(method = RequestMethod.GET, value = "/") @ResponseBody public HttpEntity<RootResponse> home() { return new ResponseEntity<RootResponse>(new RootResponse(), HttpStatus.OK); } }