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/*
 *
 * 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.servlet.ServletContext;
import javax.ws.rs.GET;
import javax.ws.rs.Path;
import javax.ws.rs.Produces;
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.classification.InterfaceAudience;
import org.apache.hadoop.hbase.rest.model.VersionModel;

/**
 * Implements REST software version reporting
 * 

* /version/rest *

* /version (alias for /version/rest) */ @InterfaceAudience.Private public class VersionResource extends ResourceBase { private static final Log LOG = LogFactory.getLog(VersionResource.class); static CacheControl cacheControl; static { cacheControl = new CacheControl(); cacheControl.setNoCache(true); cacheControl.setNoTransform(false); } /** * Constructor * @throws IOException */ public VersionResource() throws IOException { super(); } /** * Build a response for a version request. * @param context servlet context * @param uriInfo (JAX-RS context variable) request URL * @return a response for a version request */ @GET @Produces({MIMETYPE_TEXT, MIMETYPE_XML, MIMETYPE_JSON, MIMETYPE_PROTOBUF, MIMETYPE_PROTOBUF_IETF}) public Response get(final @Context ServletContext context, final @Context UriInfo uriInfo) { if (LOG.isDebugEnabled()) { LOG.debug("GET " + uriInfo.getAbsolutePath()); } servlet.getMetrics().incrementRequests(1); ResponseBuilder response = Response.ok(new VersionModel(context)); response.cacheControl(cacheControl); servlet.getMetrics().incrementSucessfulGetRequests(1); return response.build(); } /** * Dispatch to StorageClusterVersionResource */ @Path("cluster") public StorageClusterVersionResource getClusterVersionResource() throws IOException { return new StorageClusterVersionResource(); } /** * Dispatch /version/rest to self. */ @Path("rest") public VersionResource getVersionResource() { return this; } }





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