| /** |
| * 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.curator.framework.recipes.atomic; |
| |
| import static org.junit.jupiter.api.Assertions.assertEquals; |
| import static org.junit.jupiter.api.Assertions.assertFalse; |
| import static org.junit.jupiter.api.Assertions.assertTrue; |
| |
| import org.apache.curator.framework.CuratorFramework; |
| import org.apache.curator.framework.CuratorFrameworkFactory; |
| import org.apache.curator.retry.RetryOneTime; |
| import org.apache.curator.test.BaseClassForTests; |
| import org.junit.jupiter.api.Test; |
| |
| import java.util.concurrent.atomic.AtomicReference; |
| |
| public class TestCachedAtomicCounter extends BaseClassForTests |
| { |
| @Test |
| public void testWithError() throws Exception |
| { |
| final int FACTOR = 100; |
| |
| CuratorFramework client = CuratorFrameworkFactory.newClient(server.getConnectString(), new RetryOneTime(1)); |
| client.start(); |
| try |
| { |
| AtomicValue<Long> value = new MutableAtomicValue<Long>(0L, (long)FACTOR, true); |
| final AtomicReference<AtomicValue<Long>> fakeValueRef = new AtomicReference<AtomicValue<Long>>(value); |
| DistributedAtomicLong dal = new DistributedAtomicLong(client, "/", null, null) |
| { |
| @Override |
| public AtomicValue<Long> trySet(Long newValue) throws Exception |
| { |
| return fakeValueRef.get(); |
| } |
| |
| @Override |
| public AtomicValue<Long> get() throws Exception |
| { |
| return fakeValueRef.get(); |
| } |
| |
| @Override |
| public AtomicValue<Long> increment() throws Exception |
| { |
| return fakeValueRef.get(); |
| } |
| |
| @Override |
| public AtomicValue<Long> decrement() throws Exception |
| { |
| return fakeValueRef.get(); |
| } |
| |
| @Override |
| public AtomicValue<Long> add(Long delta) throws Exception |
| { |
| return fakeValueRef.get(); |
| } |
| |
| @Override |
| public AtomicValue<Long> subtract(Long delta) throws Exception |
| { |
| return fakeValueRef.get(); |
| } |
| |
| @Override |
| public void forceSet(Long newValue) throws Exception |
| { |
| } |
| |
| @Override |
| public AtomicValue<Long> compareAndSet(Long expectedValue, Long newValue) throws Exception |
| { |
| return fakeValueRef.get(); |
| } |
| }; |
| CachedAtomicLong cachedLong = new CachedAtomicLong(dal, FACTOR); |
| for ( int i = 0; i < FACTOR; ++i ) |
| { |
| value = cachedLong.next(); |
| assertTrue(value.succeeded()); |
| assertEquals(value.preValue().longValue(), i); |
| assertEquals(value.postValue().longValue(), i + 1); |
| |
| if ( i == 0 ) |
| { |
| MutableAtomicValue<Long> badValue = new MutableAtomicValue<Long>(0L, 0L); |
| badValue.succeeded = false; |
| fakeValueRef.set(badValue); |
| } |
| } |
| |
| value = cachedLong.next(); |
| assertFalse(value.succeeded()); |
| } |
| finally |
| { |
| client.close(); |
| } |
| } |
| |
| @Test |
| public void testBasic() throws Exception |
| { |
| CuratorFramework client = CuratorFrameworkFactory.newClient(server.getConnectString(), new RetryOneTime(1)); |
| client.start(); |
| try |
| { |
| DistributedAtomicLong dal = new DistributedAtomicLong(client, "/counter", new RetryOneTime(1)); |
| CachedAtomicLong cachedLong = new CachedAtomicLong(dal, 100); |
| for ( long i = 0; i < 200; ++i ) |
| { |
| AtomicValue<Long> value = cachedLong.next(); |
| assertTrue(value.succeeded()); |
| assertEquals(value.preValue().longValue(), i); |
| assertEquals(value.postValue().longValue(), i + 1); |
| } |
| } |
| finally |
| { |
| client.close(); |
| } |
| } |
| } |