Apache CXF example source code file (JAXRSContinuationsTest.java)

This example Apache CXF source code file (JAXRSContinuationsTest.java) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" ^TM.

Java - Apache CXF tags/keywords

book, bookworker, bookworker, countdownlatch, countdownlatch, cxf, exception, httpclient, port, port, string, string, test, threading, threadpoolexecutor, threads

The Apache CXF JAXRSContinuationsTest.java source code

/**
 * 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.cxf.systest.jaxrs;

import java.util.concurrent.ArrayBlockingQueue;
import java.util.concurrent.CountDownLatch;
import java.util.concurrent.ThreadPoolExecutor;
import java.util.concurrent.TimeUnit;

import org.apache.commons.httpclient.HttpClient;
import org.apache.commons.httpclient.methods.GetMethod;
import org.apache.cxf.testutil.common.AbstractBusClientServerTestBase;

import org.junit.Assert;
import org.junit.BeforeClass;
import org.junit.Ignore;
import org.junit.Test;


public class JAXRSContinuationsTest extends AbstractBusClientServerTestBase {
    public static final String PORT = BookContinuationServer.PORT;

    @BeforeClass
    public static void startServers() throws Exception {
        assertTrue("server did not launch correctly",
                   launchServer(BookContinuationServer.class));
    }
    
    @Test
    public void testContinuation() throws Exception {
        
        doTestContinuation("books");
    }
    
    @Test
    public void testContinuationSubresource() throws Exception {
        
        doTestContinuation("books/subresources");
    }
    
    private void doTestContinuation(String pathSegment) throws Exception {
        ThreadPoolExecutor executor = new ThreadPoolExecutor(5, 5, 0, TimeUnit.SECONDS,
                                                             new ArrayBlockingQueue<Runnable>(10));
        CountDownLatch startSignal = new CountDownLatch(1);
        CountDownLatch doneSignal = new CountDownLatch(5);
        
        executor.execute(new BookWorker("http://localhost:" + PORT + "/bookstore/" + pathSegment + "/1", 
                                        "1", 
                                        "CXF in Action1", startSignal, doneSignal));
        executor.execute(new BookWorker("http://localhost:" + PORT + "/bookstore/" + pathSegment + "/2", 
                                        "2", 
                                        "CXF in Action2", startSignal, doneSignal));
        executor.execute(new BookWorker("http://localhost:" + PORT + "/bookstore/" + pathSegment + "/3", 
                                        "3", 
                                        "CXF in Action3", startSignal, doneSignal));
        executor.execute(new BookWorker("http://localhost:" + PORT + "/bookstore/" + pathSegment + "/4", 
                                        "4", 
                                        "CXF in Action4", startSignal, doneSignal));
        executor.execute(new BookWorker("http://localhost:" + PORT + "/bookstore/" + pathSegment + "/5", 
                                        "5", 
                                        "CXF in Action5", startSignal, doneSignal));
        
        startSignal.countDown();
        doneSignal.await(60, TimeUnit.SECONDS);
        executor.shutdownNow();
        assertEquals("Not all invocations have completed", 0, doneSignal.getCount());
    }
    
    private void checkBook(String address, String id, String expected) throws Exception {
        GetMethod get = new GetMethod(address);
        HttpClient httpclient = new HttpClient();
        
        try {
            int result = httpclient.executeMethod(get);
            assertEquals(200, result);
            assertEquals("Book description for id " + id + " is wrong",
                         expected, get.getResponseBodyAsString());
        } finally {
            // Release current connection to the connection pool once you are done
            get.releaseConnection();
        }
    }
    
    @Ignore
    private class BookWorker implements Runnable {

        private String address;
        private String id;
        private String expected;
        private CountDownLatch startSignal;
        private CountDownLatch doneSignal;
        public BookWorker(String address,
                          String id,
                          String expected,
                           CountDownLatch startSignal,
                           CountDownLatch doneSignal) {
            this.address = address;
            this.id = id;
            this.expected = expected;
            this.startSignal = startSignal;
            this.doneSignal = doneSignal;
        }
        
        public void run() {
            
            try {
                startSignal.await();
                checkBook(address, id, expected);
                doneSignal.countDown();
            } catch (InterruptedException ex) {
                // ignore
            } catch (Exception ex) {
                ex.printStackTrace();
                Assert.fail("Book thread failed for : " + id);
            } 
            
        }
        
    }
}