| /** |
| * 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.hadoop.log; |
| |
| import org.apache.hadoop.log.LogThrottlingHelper.LogAction; |
| import org.apache.hadoop.util.FakeTimer; |
| import org.junit.Before; |
| import org.junit.Test; |
| |
| import static org.junit.Assert.assertEquals; |
| import static org.junit.Assert.assertFalse; |
| import static org.junit.Assert.assertTrue; |
| |
| /** |
| * Tests for {@link LogThrottlingHelper}. |
| */ |
| public class TestLogThrottlingHelper { |
| |
| private static final int LOG_PERIOD = 100; |
| |
| private LogThrottlingHelper helper; |
| private FakeTimer timer; |
| |
| @Before |
| public void setup() { |
| timer = new FakeTimer(); |
| helper = new LogThrottlingHelper(LOG_PERIOD, null, timer); |
| } |
| |
| @Test |
| public void testBasicLogging() { |
| assertTrue(helper.record().shouldLog()); |
| |
| for (int i = 0; i < 5; i++) { |
| timer.advance(LOG_PERIOD / 10); |
| assertFalse(helper.record().shouldLog()); |
| } |
| timer.advance(LOG_PERIOD); |
| assertTrue(helper.record().shouldLog()); |
| } |
| |
| @Test |
| public void testLoggingWithValue() { |
| assertTrue(helper.record(1).shouldLog()); |
| |
| for (int i = 0; i < 4; i++) { |
| timer.advance(LOG_PERIOD / 5); |
| assertFalse(helper.record(i % 2 == 0 ? 0 : 1).shouldLog()); |
| } |
| |
| timer.advance(LOG_PERIOD); |
| LogAction action = helper.record(0.5); |
| assertTrue(action.shouldLog()); |
| assertEquals(5, action.getCount()); |
| assertEquals(0.5, action.getStats(0).getMean(), 0.01); |
| assertEquals(1.0, action.getStats(0).getMax(), 0.01); |
| assertEquals(0.0, action.getStats(0).getMin(), 0.01); |
| } |
| |
| @Test |
| public void testLoggingWithMultipleValues() { |
| assertTrue(helper.record(1).shouldLog()); |
| |
| for (int i = 0; i < 4; i++) { |
| timer.advance(LOG_PERIOD / 5); |
| int base = i % 2 == 0 ? 0 : 1; |
| assertFalse(helper.record(base, base * 2).shouldLog()); |
| } |
| |
| timer.advance(LOG_PERIOD); |
| LogAction action = helper.record(0.5, 1.0); |
| assertTrue(action.shouldLog()); |
| assertEquals(5, action.getCount()); |
| for (int i = 1; i <= 2; i++) { |
| assertEquals(0.5 * i, action.getStats(i - 1).getMean(), 0.01); |
| assertEquals(1.0 * i, action.getStats(i - 1).getMax(), 0.01); |
| assertEquals(0.0, action.getStats(i - 1).getMin(), 0.01); |
| } |
| } |
| |
| @Test(expected = IllegalArgumentException.class) |
| public void testLoggingWithInconsistentValues() { |
| assertTrue(helper.record(1, 2).shouldLog()); |
| helper.record(1, 2); |
| helper.record(1, 2, 3); |
| } |
| |
| @Test |
| public void testNamedLoggersWithoutSpecifiedPrimary() { |
| assertTrue(helper.record("foo", 0).shouldLog()); |
| assertTrue(helper.record("bar", 0).shouldLog()); |
| |
| assertFalse(helper.record("foo", LOG_PERIOD / 2).shouldLog()); |
| assertFalse(helper.record("bar", LOG_PERIOD / 2).shouldLog()); |
| |
| assertTrue(helper.record("foo", LOG_PERIOD).shouldLog()); |
| assertTrue(helper.record("bar", LOG_PERIOD).shouldLog()); |
| |
| assertFalse(helper.record("foo", (LOG_PERIOD * 3) / 2).shouldLog()); |
| assertFalse(helper.record("bar", (LOG_PERIOD * 3) / 2).shouldLog()); |
| |
| assertFalse(helper.record("bar", LOG_PERIOD * 2).shouldLog()); |
| assertTrue(helper.record("foo", LOG_PERIOD * 2).shouldLog()); |
| assertTrue(helper.record("bar", LOG_PERIOD * 2).shouldLog()); |
| } |
| |
| @Test |
| public void testPrimaryAndDependentLoggers() { |
| helper = new LogThrottlingHelper(LOG_PERIOD, "foo", timer); |
| |
| assertTrue(helper.record("foo", 0).shouldLog()); |
| assertTrue(helper.record("bar", 0).shouldLog()); |
| assertFalse(helper.record("bar", 0).shouldLog()); |
| assertFalse(helper.record("foo", 0).shouldLog()); |
| |
| assertFalse(helper.record("foo", LOG_PERIOD / 2).shouldLog()); |
| assertFalse(helper.record("bar", LOG_PERIOD / 2).shouldLog()); |
| |
| // Both should log once the period has elapsed |
| assertTrue(helper.record("foo", LOG_PERIOD).shouldLog()); |
| assertTrue(helper.record("bar", LOG_PERIOD).shouldLog()); |
| |
| // "bar" should not log yet because "foo" hasn't been triggered |
| assertFalse(helper.record("bar", LOG_PERIOD * 2).shouldLog()); |
| assertTrue(helper.record("foo", LOG_PERIOD * 2).shouldLog()); |
| // The timing of "bar" shouldn't matter as it is dependent on "foo" |
| assertTrue(helper.record("bar", 0).shouldLog()); |
| } |
| |
| @Test |
| public void testMultipleLoggersWithValues() { |
| helper = new LogThrottlingHelper(LOG_PERIOD, "foo", timer); |
| |
| assertTrue(helper.record("foo", 0).shouldLog()); |
| assertTrue(helper.record("bar", 0, 2).shouldLog()); |
| assertTrue(helper.record("baz", 0, 3, 3).shouldLog()); |
| |
| // "bar"/"baz" should not log yet because "foo" hasn't been triggered |
| assertFalse(helper.record("bar", LOG_PERIOD, 2).shouldLog()); |
| assertFalse(helper.record("baz", LOG_PERIOD, 3, 3).shouldLog()); |
| |
| // All should log once the period has elapsed |
| LogAction foo = helper.record("foo", LOG_PERIOD); |
| LogAction bar = helper.record("bar", LOG_PERIOD, 2); |
| LogAction baz = helper.record("baz", LOG_PERIOD, 3, 3); |
| assertTrue(foo.shouldLog()); |
| assertTrue(bar.shouldLog()); |
| assertTrue(baz.shouldLog()); |
| assertEquals(1, foo.getCount()); |
| assertEquals(2, bar.getCount()); |
| assertEquals(2, baz.getCount()); |
| assertEquals(2.0, bar.getStats(0).getMean(), 0.01); |
| assertEquals(3.0, baz.getStats(0).getMean(), 0.01); |
| assertEquals(3.0, baz.getStats(1).getMean(), 0.01); |
| } |
| |
| } |