| /* |
| * 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.nifi.util.timebuffer; |
| |
| import org.junit.jupiter.api.Test; |
| |
| import java.util.concurrent.TimeUnit; |
| |
| import static org.junit.Assert.assertEquals; |
| import static org.junit.Assert.assertNull; |
| |
| public class TestTimedBuffer { |
| |
| @Test |
| public void testAgesOff() throws InterruptedException { |
| final LongEntityAccess access = new LongEntityAccess(); |
| final TimedBuffer<TimestampedLong> buffer = new TimedBuffer<>(TimeUnit.SECONDS, 2, access); |
| |
| buffer.add(new TimestampedLong(1000000L)); |
| TimestampedLong aggregate = buffer.getAggregateValue(System.currentTimeMillis() - 30000L); |
| assertEquals(1000000L, aggregate.getValue().longValue()); |
| Thread.sleep(1000L); |
| aggregate = buffer.getAggregateValue(System.currentTimeMillis() - 30000L); |
| assertEquals(1000000L, aggregate.getValue().longValue()); |
| Thread.sleep(1500L); |
| aggregate = buffer.getAggregateValue(System.currentTimeMillis() - 30000L); |
| assertNull(aggregate); |
| } |
| |
| @Test |
| public void testAggregation() throws InterruptedException { |
| final LongEntityAccess access = new LongEntityAccess(); |
| final TimedBuffer<TimestampedLong> buffer = new TimedBuffer<>(TimeUnit.SECONDS, 2, access); |
| |
| buffer.add(new TimestampedLong(1000000L)); |
| buffer.add(new TimestampedLong(1000000L)); |
| buffer.add(new TimestampedLong(25000L)); |
| |
| TimestampedLong aggregate = buffer.getAggregateValue(System.currentTimeMillis() - 30000L); |
| assertEquals(2025000L, aggregate.getValue().longValue()); |
| Thread.sleep(1000L); |
| aggregate = buffer.getAggregateValue(System.currentTimeMillis() - 30000L); |
| assertEquals(2025000L, aggregate.getValue().longValue()); |
| Thread.sleep(1500L); |
| aggregate = buffer.getAggregateValue(System.currentTimeMillis() - 30000L); |
| assertNull(aggregate); |
| } |
| |
| private static class TimestampedLong { |
| |
| private final Long value; |
| private final long timestamp = System.currentTimeMillis(); |
| |
| public TimestampedLong(final Long value) { |
| this.value = value; |
| } |
| |
| public Long getValue() { |
| return value; |
| } |
| |
| public long getTimestamp() { |
| return timestamp; |
| } |
| } |
| |
| private static class LongEntityAccess implements EntityAccess<TimestampedLong> { |
| |
| @Override |
| public TimestampedLong aggregate(TimestampedLong oldValue, TimestampedLong toAdd) { |
| if (oldValue == null && toAdd == null) { |
| return new TimestampedLong(0L); |
| } else if (oldValue == null) { |
| return toAdd; |
| } else if (toAdd == null) { |
| return oldValue; |
| } |
| |
| return new TimestampedLong(oldValue.getValue().longValue() + toAdd.getValue().longValue()); |
| } |
| |
| @Override |
| public TimestampedLong createNew() { |
| return new TimestampedLong(0L); |
| } |
| |
| @Override |
| public long getTimestamp(TimestampedLong entity) { |
| return entity == null ? 0L : entity.getTimestamp(); |
| } |
| } |
| } |