| /* |
| * 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.Response.ResponseBuilder; |
| import javax.ws.rs.core.UriInfo; |
| |
| import org.apache.commons.logging.Log; |
| import org.apache.commons.logging.LogFactory; |
| |
| import org.apache.hadoop.hbase.ClusterStatus; |
| import org.apache.hadoop.hbase.HServerInfo; |
| import org.apache.hadoop.hbase.HServerLoad; |
| import org.apache.hadoop.hbase.client.HBaseAdmin; |
| import org.apache.hadoop.hbase.rest.model.StorageClusterStatusModel; |
| |
| public class StorageClusterStatusResource extends ResourceBase { |
| private static final Log LOG = |
| LogFactory.getLog(StorageClusterStatusResource.class); |
| |
| static CacheControl cacheControl; |
| static { |
| cacheControl = new CacheControl(); |
| cacheControl.setNoCache(true); |
| cacheControl.setNoTransform(false); |
| } |
| |
| /** |
| * Constructor |
| * @throws IOException |
| */ |
| public StorageClusterStatusResource() throws IOException { |
| super(); |
| } |
| |
| @GET |
| @Produces({MIMETYPE_TEXT, MIMETYPE_XML, MIMETYPE_JSON, MIMETYPE_PROTOBUF}) |
| 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()); |
| ClusterStatus status = admin.getClusterStatus(); |
| StorageClusterStatusModel model = new StorageClusterStatusModel(); |
| model.setRegions(status.getRegionsCount()); |
| model.setRequests(status.getRequestsCount()); |
| model.setAverageLoad(status.getAverageLoad()); |
| for (HServerInfo info: status.getServerInfo()) { |
| HServerLoad load = info.getLoad(); |
| StorageClusterStatusModel.Node node = |
| model.addLiveNode( |
| info.getServerAddress().getHostname() + ":" + |
| Integer.toString(info.getServerAddress().getPort()), |
| info.getStartCode(), load.getUsedHeapMB(), |
| load.getMaxHeapMB()); |
| node.setRequests(load.getNumberOfRequests()); |
| for (HServerLoad.RegionLoad region: load.getRegionsLoad()) { |
| node.addRegion(region.getName(), region.getStores(), |
| region.getStorefiles(), region.getStorefileSizeMB(), |
| region.getMemStoreSizeMB(), region.getStorefileIndexSizeMB()); |
| } |
| } |
| for (String name: status.getDeadServerNames()) { |
| model.addDeadNode(name); |
| } |
| ResponseBuilder response = Response.ok(model); |
| response.cacheControl(cacheControl); |
| return response.build(); |
| } catch (IOException e) { |
| throw new WebApplicationException(e, |
| Response.Status.SERVICE_UNAVAILABLE); |
| } |
| } |
| } |