001/*
002 * Licensed to the Apache Software Foundation (ASF) under one
003 * or more contributor license agreements.  See the NOTICE file
004 * distributed with this work for additional information
005 * regarding copyright ownership.  The ASF licenses this file
006 * to you under the Apache License, Version 2.0 (the
007 * "License"); you may not use this file except in compliance
008 * with the License.  You may obtain a copy of the License at
009 *
010 *     http://www.apache.org/licenses/LICENSE-2.0
011 *
012 * Unless required by applicable law or agreed to in writing, software
013 * distributed under the License is distributed on an "AS IS" BASIS,
014 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
015 * See the License for the specific language governing permissions and
016 * limitations under the License.
017 */
018package org.apache.hadoop.hbase.rest;
019
020import java.io.IOException;
021import org.apache.hadoop.hbase.TableName;
022import org.apache.hadoop.hbase.rest.model.TableListModel;
023import org.apache.hadoop.hbase.rest.model.TableModel;
024import org.apache.yetus.audience.InterfaceAudience;
025import org.slf4j.Logger;
026import org.slf4j.LoggerFactory;
027
028import org.apache.hbase.thirdparty.javax.ws.rs.GET;
029import org.apache.hbase.thirdparty.javax.ws.rs.Path;
030import org.apache.hbase.thirdparty.javax.ws.rs.PathParam;
031import org.apache.hbase.thirdparty.javax.ws.rs.Produces;
032import org.apache.hbase.thirdparty.javax.ws.rs.core.CacheControl;
033import org.apache.hbase.thirdparty.javax.ws.rs.core.Context;
034import org.apache.hbase.thirdparty.javax.ws.rs.core.Response;
035import org.apache.hbase.thirdparty.javax.ws.rs.core.Response.ResponseBuilder;
036import org.apache.hbase.thirdparty.javax.ws.rs.core.UriInfo;
037
038@Path("/")
039@InterfaceAudience.Private
040public class RootResource extends ResourceBase {
041  private static final Logger LOG = LoggerFactory.getLogger(RootResource.class);
042
043  static CacheControl cacheControl;
044  static {
045    cacheControl = new CacheControl();
046    cacheControl.setNoCache(true);
047    cacheControl.setNoTransform(false);
048  }
049
050  /**
051   * Constructor n
052   */
053  public RootResource() throws IOException {
054    super();
055  }
056
057  private final TableListModel getTableList() throws IOException {
058    TableListModel tableList = new TableListModel();
059    TableName[] tableNames = servlet.getAdmin().listTableNames();
060    for (TableName name : tableNames) {
061      tableList.add(new TableModel(name.getNameAsString()));
062    }
063    return tableList;
064  }
065
066  @GET
067  @Produces({ MIMETYPE_TEXT, MIMETYPE_XML, MIMETYPE_JSON, MIMETYPE_PROTOBUF,
068    MIMETYPE_PROTOBUF_IETF })
069  public Response get(final @Context UriInfo uriInfo) {
070    if (LOG.isTraceEnabled()) {
071      LOG.trace("GET " + uriInfo.getAbsolutePath());
072    }
073    servlet.getMetrics().incrementRequests(1);
074    try {
075      ResponseBuilder response = Response.ok(getTableList());
076      response.cacheControl(cacheControl);
077      servlet.getMetrics().incrementSucessfulGetRequests(1);
078      return response.build();
079    } catch (Exception e) {
080      servlet.getMetrics().incrementFailedGetRequests(1);
081      return processException(e);
082    }
083  }
084
085  @Path("status/cluster")
086  public StorageClusterStatusResource getClusterStatusResource() throws IOException {
087    return new StorageClusterStatusResource();
088  }
089
090  @Path("version")
091  public VersionResource getVersionResource() throws IOException {
092    return new VersionResource();
093  }
094
095  @Path("{table}")
096  public TableResource getTableResource(final @PathParam("table") String table) throws IOException {
097    return new TableResource(table);
098  }
099
100  @Path("namespaces")
101  public NamespacesResource getNamespaceResource() throws IOException {
102    return new NamespacesResource();
103  }
104}