gobblin.configuration.StateTest.java Source code

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Here is the source code for gobblin.configuration.StateTest.java

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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 gobblin.configuration;

import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;
import java.util.concurrent.LinkedBlockingQueue;
import java.util.concurrent.TimeUnit;
import org.apache.commons.lang.exception.ExceptionUtils;
import org.testng.Assert;
import org.testng.annotations.Test;

public class StateTest {
    private LinkedBlockingQueue<Throwable> exceptions = new LinkedBlockingQueue<>();

    /**
     * This test checks that state object is thread safe. We run 2 threads, one of them continuously adds and removes key/values
     * to the state and other thread calls getProperties.
     */
    @Test
    public void testGetPropertiesThreadSafety() {
        try {
            final State state = new State();
            for (int i = 0; i < 1000; i++) {
                state.setProp(Integer.toString(i), Integer.toString(i));
            }
            ExecutorService executorService = Executors.newFixedThreadPool(2);

            executorService.submit(new Runnable() {
                @Override
                public void run() {
                    for (int j = 0; j < 1000; j++) {
                        for (int i = 0; i < 1000; i++) {
                            try {
                                state.removeProp(Integer.toString(i));
                                state.setProp(Integer.toString(i), Integer.toString(i));
                            } catch (Throwable t) {
                                exceptions.add(t);
                            }
                        }
                    }
                }
            });

            executorService.submit(new Runnable() {
                @Override
                public void run() {
                    for (int i = 0; i < 1000; i++) {
                        try {
                            state.getProperties().get(Integer.toString(i));
                        } catch (Throwable t) {
                            exceptions.add(t);
                        }
                    }
                }
            });

            executorService.shutdown();
            if (!executorService.awaitTermination(100, TimeUnit.SECONDS)) {
                throw new RuntimeException("Executor service still running");
            }
        } catch (Throwable t) {
            Assert.fail("Concurrency test failed", t);
        }

        if (!this.exceptions.isEmpty()) {
            Assert.fail("Concurrency test failed with first exception: "
                    + ExceptionUtils.getFullStackTrace(this.exceptions.poll()));
        }
    }
}