/*
* Licensed to Crate under one or more contributor license agreements.
* See the NOTICE file distributed with this work for additional
* information regarding copyright ownership. Crate 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.
*
* However, if you have executed another commercial license agreement
* with Crate these terms will supersede the license and you may use the
* software solely pursuant to the terms of the relevant commercial
* agreement.
*/
package io.crate.blob;
import io.crate.test.integration.CrateUnitTest;
import org.junit.Test;
import java.util.ArrayList;
import java.util.HashSet;
import java.util.List;
import java.util.Set;
import java.util.concurrent.*;
import static org.hamcrest.Matchers.is;
import static org.junit.Assert.assertThat;
public class BlobCoordinatorTest extends CrateUnitTest {
@Test
public void testSameDigestGetsSameSemaphore() throws Exception {
BlobCoordinator blobCoordinator = new BlobCoordinator();
ExecutorService executorService = Executors.newFixedThreadPool(3);
try {
Set<Semaphore> semaphoresForSameDigest = new HashSet<>();
List<CompletableFuture<Semaphore>> futures = new ArrayList<>(100);
for (int i = 0; i < 100; i++) {
futures.add(CompletableFuture.supplyAsync(
() -> blobCoordinator.digestCoordinator("testDigest"),
executorService));
}
futures.forEach(future -> semaphoresForSameDigest.add(future.join()));
assertThat(semaphoresForSameDigest.size(), is(1));
} finally {
executorService.shutdown();
executorService.awaitTermination(10, TimeUnit.SECONDS);
}
}
}