| /* |
| * Copyright 2010 The Apache Software Foundation |
| * |
| * 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.hadoop.hbase.rest; |
| |
| import java.io.IOException; |
| |
| import javax.ws.rs.GET; |
| import javax.ws.rs.Produces; |
| import javax.ws.rs.WebApplicationException; |
| import javax.ws.rs.core.CacheControl; |
| import javax.ws.rs.core.Context; |
| import javax.ws.rs.core.Response; |
| import javax.ws.rs.core.UriInfo; |
| import javax.ws.rs.core.Response.ResponseBuilder; |
| |
| import org.apache.commons.logging.Log; |
| import org.apache.commons.logging.LogFactory; |
| |
| import org.apache.hadoop.hbase.client.HBaseAdmin; |
| import org.apache.hadoop.hbase.rest.model.StorageClusterVersionModel; |
| |
| public class StorageClusterVersionResource extends ResourceBase { |
| private static final Log LOG = |
| LogFactory.getLog(StorageClusterVersionResource.class); |
| |
| static CacheControl cacheControl; |
| static { |
| cacheControl = new CacheControl(); |
| cacheControl.setNoCache(true); |
| cacheControl.setNoTransform(false); |
| } |
| |
| /** |
| * Constructor |
| * @throws IOException |
| */ |
| public StorageClusterVersionResource() throws IOException { |
| super(); |
| } |
| |
| @GET |
| @Produces({MIMETYPE_TEXT, MIMETYPE_XML, MIMETYPE_JSON}) |
| public Response get(final @Context UriInfo uriInfo) { |
| if (LOG.isDebugEnabled()) { |
| LOG.debug("GET " + uriInfo.getAbsolutePath()); |
| } |
| servlet.getMetrics().incrementRequests(1); |
| try { |
| HBaseAdmin admin = new HBaseAdmin(servlet.getConfiguration()); |
| StorageClusterVersionModel model = new StorageClusterVersionModel(); |
| model.setVersion(admin.getClusterStatus().getHBaseVersion()); |
| ResponseBuilder response = Response.ok(model); |
| response.cacheControl(cacheControl); |
| return response.build(); |
| } catch (IOException e) { |
| throw new WebApplicationException(e, |
| Response.Status.SERVICE_UNAVAILABLE); |
| } |
| } |
| } |