ThreadNameTest.java

/*
 * Copyright (c) 2015 AsyncHttpClient Project. All rights reserved.
 *
 * This program is licensed to you under the Apache License Version 2.0,
 * and you may not use this file except in compliance with the Apache License Version 2.0.
 * You may obtain a copy of the Apache License Version 2.0 at
 *     http://www.apache.org/licenses/LICENSE-2.0.
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the Apache License Version 2.0 is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the Apache License Version 2.0 for the specific language governing permissions and limitations there under.
 */
package org.asynchttpclient;

import static org.asynchttpclient.Dsl.*;

import java.util.Arrays;
import java.util.Random;
import java.util.concurrent.Future;
import java.util.concurrent.TimeUnit;

import org.testng.Assert;
import org.testng.annotations.Test;

/**
 * Tests configured client name is used for thread names.
 *
 * @author Stepan Koltsov
 */
public class ThreadNameTest extends AbstractBasicTest {

    private static Thread[] getThreads() {
        int count = Thread.activeCount() + 1;
        for (;;) {
            Thread[] threads = new Thread[count];
            int filled = Thread.enumerate(threads);
            if (filled < threads.length) {
                return Arrays.copyOf(threads, filled);
            }

            count *= 2;
        }
    }

    @Test(groups = "standalone")
    public void testThreadName() throws Exception {
        String threadPoolName = "ahc-" + (new Random().nextLong() & 0x7fffffffffffffffL);
        try (AsyncHttpClient client = asyncHttpClient(config().setThreadPoolName(threadPoolName))) {
            Future<Response> f = client.prepareGet("http://localhost:" + port1 + "/").execute();
            f.get(3, TimeUnit.SECONDS);

            // We cannot assert that all threads are created with specified name,
            // so we checking that at least one thread is.
            boolean found = false;
            for (Thread thread : getThreads()) {
                if (thread.getName().startsWith(threadPoolName)) {
                    found = true;
                    break;
                }
            }

            Assert.assertTrue(found, "must found threads starting with random string " + threadPoolName);
        }
    }
}