| /* |
| * 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.metron.profiler.storm; |
| |
| import org.junit.Test; |
| |
| import static org.junit.Assert.assertFalse; |
| import static org.junit.Assert.assertTrue; |
| |
| /** |
| * Tests the {@code FixedFrequencyFlushSignal} class. |
| */ |
| public class FixedFrequencyFlushSignalTest { |
| |
| @Test |
| public void testSignalFlush() { |
| int flushFreq = 1000; |
| FixedFrequencyFlushSignal signal = new FixedFrequencyFlushSignal(flushFreq); |
| |
| // not ready to flush; we have not seen any messages yet |
| assertFalse(signal.isTimeToFlush()); |
| |
| // not ready to flush; flushTime = min + flushFreq = 5000 + 1000 = 6000; flush if anything >= flushTime |
| signal.update(5000); |
| assertFalse(signal.isTimeToFlush()); |
| |
| // ready to flush; flushTime = min + flushFreq = 5000 + 1000 = 6000; max(5000,7000) >= 6000 |
| signal.update(7000); |
| assertTrue(signal.isTimeToFlush()); |
| } |
| |
| @Test |
| public void testOutOfOrderTimestamps() { |
| int flushFreq = 5000; |
| FixedFrequencyFlushSignal signal = new FixedFrequencyFlushSignal(flushFreq); |
| |
| // not ready to flush; flushTime = min + flushFreq = 5000 + 5000 = 10000; flush if anything >= flushTime |
| signal.update(5000); |
| assertFalse(signal.isTimeToFlush()); |
| |
| // not ready to flush; flushTime = min + flushFreq = 1000 + 5000 = 6000 |
| signal.update(1000); |
| assertFalse(signal.isTimeToFlush()); |
| |
| // ready to flush; flushTime = min + flushFreq = 1000 + 5000 = 6000; max(5000,1000,7000) >= 6000 |
| signal.update(7000); |
| assertTrue(signal.isTimeToFlush()); |
| |
| // ready to flush, still |
| signal.update(3000); |
| assertTrue(signal.isTimeToFlush()); |
| |
| // ready to flush, still |
| assertTrue(signal.isTimeToFlush()); |
| } |
| |
| @Test |
| public void testOutOfOrderTimestampsNoFlush() { |
| int flushFreq = 7000; |
| FixedFrequencyFlushSignal signal = new FixedFrequencyFlushSignal(flushFreq); |
| |
| // not ready to flush; flushTime = min + flushFreq = 5000 + 7000 = 12000; flush if anything >= flushTime |
| signal.update(5000); |
| assertFalse(signal.isTimeToFlush()); |
| |
| // not ready to flush; flushTime = min + flushFreq = 1000 + 7000 = 8000 |
| signal.update(1000); |
| assertFalse(signal.isTimeToFlush()); |
| |
| // not ready to flush; flushTime = min + flushFreq = 1000 + 7000 = 8000 |
| signal.update(7000); |
| assertFalse(signal.isTimeToFlush()); |
| |
| // ready to flush; flushTime = min + flushFreq = 1000 + 7000 = 8000; max(5000,1000,7000,3000) >= 8000 |
| signal.update(3000); |
| assertFalse(signal.isTimeToFlush()); |
| } |
| |
| @Test |
| public void testTimestampsDescending() { |
| int flushFreq = 3000; |
| FixedFrequencyFlushSignal signal = new FixedFrequencyFlushSignal(flushFreq); |
| |
| // not ready to flush; flushTime = min + flushFreq = 4100 + 3000 = 7100; flush if anything >= flushTime |
| signal.update(4100); |
| assertFalse(signal.isTimeToFlush()); |
| |
| // not ready to flush; flushTime = min + flushFreq = 3000 + 3000 = 6000 |
| signal.update(3000); |
| assertFalse(signal.isTimeToFlush()); |
| |
| // not ready to flush; flushTime = min + flushFreq = 2000 + 3000 = 5000 |
| signal.update(2000); |
| assertFalse(signal.isTimeToFlush()); |
| |
| // ready to flush; flushTime = min + flushFreq = 1000 + 3000 = 4000; max(4100,3000,2000,1000) >= 4000 |
| signal.update(1000); |
| assertTrue(signal.isTimeToFlush()); |
| } |
| |
| @Test |
| public void testTimestampsDescendingNoFlush() { |
| int flushFreq = 4000; |
| FixedFrequencyFlushSignal signal = new FixedFrequencyFlushSignal(flushFreq); |
| |
| // not ready to flush; flushTime = min + flushFreq = 4000 + 4000 = 8000; flush if anything >= flushTime |
| signal.update(4000); |
| assertFalse(signal.isTimeToFlush()); |
| |
| // not ready to flush; flushTime = min + flushFreq = 3000 + 4000 = 7000 |
| signal.update(3000); |
| assertFalse(signal.isTimeToFlush()); |
| |
| // not ready to flush; flushTime = min + flushFreq = 2000 + 4000 = 6000 |
| signal.update(2000); |
| assertFalse(signal.isTimeToFlush()); |
| |
| // not ready to flush; flushTime = min + flushFreq = 1000 + 4000 = 5000 |
| signal.update(1000); |
| assertFalse(signal.isTimeToFlush()); |
| } |
| |
| @Test |
| public void testTimestampsAscending() { |
| int flushFreq = 3000; |
| FixedFrequencyFlushSignal signal = new FixedFrequencyFlushSignal(flushFreq); |
| |
| // not ready to flush; flushTime = min + flushFreq = 1000 + 3000 = 4000; flush if anything >= flushTime |
| signal.update(1000); |
| assertFalse(signal.isTimeToFlush()); |
| |
| // not ready to flush; flushTime = min + flushFreq = 1000 + 3000 = 4000 |
| signal.update(2000); |
| assertFalse(signal.isTimeToFlush()); |
| |
| // not ready to flush; flushTime = min + flushFreq = 1000 + 3000 = 4000 |
| signal.update(3000); |
| assertFalse(signal.isTimeToFlush()); |
| |
| // ready to flush; flushTime = min + flushFreq = 1000 + 3000 = 4000; max(1000,2000,3000,4000) >= 4000 |
| signal.update(4000); |
| } |
| |
| @Test |
| public void testTimestampsAscendingNoFlush() { |
| int flushFreq = 4000; |
| FixedFrequencyFlushSignal signal = new FixedFrequencyFlushSignal(flushFreq); |
| |
| // not ready to flush; flushTime = min + flushFreq = 1000 + 4000 = 5000; flush if anything >= flushTime |
| signal.update(1000); |
| assertFalse(signal.isTimeToFlush()); |
| |
| // not ready to flush; flushTime = min + flushFreq = 1000 + 4000 = 5000 |
| signal.update(2000); |
| assertFalse(signal.isTimeToFlush()); |
| |
| // not ready to flush; flushTime = min + flushFreq = 1000 + 4000 = 5000 |
| signal.update(3000); |
| assertFalse(signal.isTimeToFlush()); |
| |
| // not ready to flush; flushTime = min + flushFreq = 1000 + 4000 = 5000 |
| signal.update(4000); |
| assertFalse(signal.isTimeToFlush()); |
| } |
| |
| @Test(expected = IllegalArgumentException.class) |
| public void testNegativeFrequency() { |
| // a negative flush frequency makes no sense |
| new FixedFrequencyFlushSignal(-1000); |
| } |
| |
| @Test |
| public void testReset() { |
| FixedFrequencyFlushSignal signal = new FixedFrequencyFlushSignal(4000); |
| signal.update(1000); |
| signal.update(6000); |
| |
| // ready to flush; flushTime = min + flushFreq = 1000 + 4000 = 5000; max(1000,6000) >= 5000 |
| assertTrue(signal.isTimeToFlush()); |
| |
| // reset should turn off the flush signal |
| signal.reset(); |
| assertFalse(signal.isTimeToFlush()); |
| } |
| } |