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| <pre><span class="source-line-no">001</span><span id="line-1">/*</span> |
| <span class="source-line-no">002</span><span id="line-2"> * Licensed to the Apache Software Foundation (ASF) under one</span> |
| <span class="source-line-no">003</span><span id="line-3"> * or more contributor license agreements. See the NOTICE file</span> |
| <span class="source-line-no">004</span><span id="line-4"> * distributed with this work for additional information</span> |
| <span class="source-line-no">005</span><span id="line-5"> * regarding copyright ownership. The ASF licenses this file</span> |
| <span class="source-line-no">006</span><span id="line-6"> * to you under the Apache License, Version 2.0 (the</span> |
| <span class="source-line-no">007</span><span id="line-7"> * "License"); you may not use this file except in compliance</span> |
| <span class="source-line-no">008</span><span id="line-8"> * with the License. You may obtain a copy of the License at</span> |
| <span class="source-line-no">009</span><span id="line-9"> *</span> |
| <span class="source-line-no">010</span><span id="line-10"> * http://www.apache.org/licenses/LICENSE-2.0</span> |
| <span class="source-line-no">011</span><span id="line-11"> *</span> |
| <span class="source-line-no">012</span><span id="line-12"> * Unless required by applicable law or agreed to in writing, software</span> |
| <span class="source-line-no">013</span><span id="line-13"> * distributed under the License is distributed on an "AS IS" BASIS,</span> |
| <span class="source-line-no">014</span><span id="line-14"> * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.</span> |
| <span class="source-line-no">015</span><span id="line-15"> * See the License for the specific language governing permissions and</span> |
| <span class="source-line-no">016</span><span id="line-16"> * limitations under the License.</span> |
| <span class="source-line-no">017</span><span id="line-17"> */</span> |
| <span class="source-line-no">018</span><span id="line-18">package org.apache.hadoop.hbase.rest;</span> |
| <span class="source-line-no">019</span><span id="line-19"></span> |
| <span class="source-line-no">020</span><span id="line-20">import java.io.IOException;</span> |
| <span class="source-line-no">021</span><span id="line-21">import org.apache.yetus.audience.InterfaceAudience;</span> |
| <span class="source-line-no">022</span><span id="line-22"></span> |
| <span class="source-line-no">023</span><span id="line-23">import org.apache.hbase.thirdparty.javax.ws.rs.GET;</span> |
| <span class="source-line-no">024</span><span id="line-24">import org.apache.hbase.thirdparty.javax.ws.rs.Produces;</span> |
| <span class="source-line-no">025</span><span id="line-25">import org.apache.hbase.thirdparty.javax.ws.rs.core.CacheControl;</span> |
| <span class="source-line-no">026</span><span id="line-26">import org.apache.hbase.thirdparty.javax.ws.rs.core.Context;</span> |
| <span class="source-line-no">027</span><span id="line-27">import org.apache.hbase.thirdparty.javax.ws.rs.core.Response;</span> |
| <span class="source-line-no">028</span><span id="line-28">import org.apache.hbase.thirdparty.javax.ws.rs.core.Response.ResponseBuilder;</span> |
| <span class="source-line-no">029</span><span id="line-29">import org.apache.hbase.thirdparty.javax.ws.rs.core.UriInfo;</span> |
| <span class="source-line-no">030</span><span id="line-30"></span> |
| <span class="source-line-no">031</span><span id="line-31">@InterfaceAudience.Private</span> |
| <span class="source-line-no">032</span><span id="line-32">public class ExistsResource extends ResourceBase {</span> |
| <span class="source-line-no">033</span><span id="line-33"></span> |
| <span class="source-line-no">034</span><span id="line-34"> static CacheControl cacheControl;</span> |
| <span class="source-line-no">035</span><span id="line-35"> static {</span> |
| <span class="source-line-no">036</span><span id="line-36"> cacheControl = new CacheControl();</span> |
| <span class="source-line-no">037</span><span id="line-37"> cacheControl.setNoCache(true);</span> |
| <span class="source-line-no">038</span><span id="line-38"> cacheControl.setNoTransform(false);</span> |
| <span class="source-line-no">039</span><span id="line-39"> }</span> |
| <span class="source-line-no">040</span><span id="line-40"></span> |
| <span class="source-line-no">041</span><span id="line-41"> TableResource tableResource;</span> |
| <span class="source-line-no">042</span><span id="line-42"></span> |
| <span class="source-line-no">043</span><span id="line-43"> /**</span> |
| <span class="source-line-no">044</span><span id="line-44"> * Constructor</span> |
| <span class="source-line-no">045</span><span id="line-45"> */</span> |
| <span class="source-line-no">046</span><span id="line-46"> public ExistsResource(TableResource tableResource) throws IOException {</span> |
| <span class="source-line-no">047</span><span id="line-47"> super();</span> |
| <span class="source-line-no">048</span><span id="line-48"> this.tableResource = tableResource;</span> |
| <span class="source-line-no">049</span><span id="line-49"> }</span> |
| <span class="source-line-no">050</span><span id="line-50"></span> |
| <span class="source-line-no">051</span><span id="line-51"> @GET</span> |
| <span class="source-line-no">052</span><span id="line-52"> @Produces({ MIMETYPE_TEXT, MIMETYPE_XML, MIMETYPE_JSON, MIMETYPE_PROTOBUF, MIMETYPE_PROTOBUF_IETF,</span> |
| <span class="source-line-no">053</span><span id="line-53"> MIMETYPE_BINARY })</span> |
| <span class="source-line-no">054</span><span id="line-54"> public Response get(final @Context UriInfo uriInfo) {</span> |
| <span class="source-line-no">055</span><span id="line-55"> try {</span> |
| <span class="source-line-no">056</span><span id="line-56"> if (!tableResource.exists()) {</span> |
| <span class="source-line-no">057</span><span id="line-57"> return Response.status(Response.Status.NOT_FOUND).type(MIMETYPE_TEXT)</span> |
| <span class="source-line-no">058</span><span id="line-58"> .entity("Not found" + CRLF).build();</span> |
| <span class="source-line-no">059</span><span id="line-59"> }</span> |
| <span class="source-line-no">060</span><span id="line-60"> } catch (IOException e) {</span> |
| <span class="source-line-no">061</span><span id="line-61"> return Response.status(Response.Status.SERVICE_UNAVAILABLE).type(MIMETYPE_TEXT)</span> |
| <span class="source-line-no">062</span><span id="line-62"> .entity("Unavailable" + CRLF).build();</span> |
| <span class="source-line-no">063</span><span id="line-63"> }</span> |
| <span class="source-line-no">064</span><span id="line-64"> ResponseBuilder response = Response.ok();</span> |
| <span class="source-line-no">065</span><span id="line-65"> response.cacheControl(cacheControl);</span> |
| <span class="source-line-no">066</span><span id="line-66"> return response.build();</span> |
| <span class="source-line-no">067</span><span id="line-67"> }</span> |
| <span class="source-line-no">068</span><span id="line-68">}</span> |
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