/*
* 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.jackrabbit.stats;
import java.util.concurrent.atomic.AtomicLong;
import junit.framework.TestCase;
public class TimeSeriesAverageTest extends TestCase {
private TimeSeriesAverage avg;
public void testAverage() {
TimeSeriesRecorder values = new TimeSeriesRecorder(true);
TimeSeriesRecorder counts = new TimeSeriesRecorder(true);
avg = new TimeSeriesAverage(values, counts);
AtomicLong value = values.getCounter();
AtomicLong count = counts.getCounter();
// initial values
assertValues(avg.getValuePerSecond());
assertValues(avg.getValuePerMinute());
assertValues(avg.getValuePerHour());
assertValues(avg.getValuePerWeek());
// no changes in first second
values.recordOneSecond();
counts.recordOneSecond();
assertValues(avg.getValuePerSecond());
assertValues(avg.getValuePerMinute());
assertValues(avg.getValuePerHour());
assertValues(avg.getValuePerWeek());
// 2 seconds
value.set(42);
count.set(2);
values.recordOneSecond();
counts.recordOneSecond();
assertValues(avg.getValuePerSecond(), 21);
assertValues(avg.getValuePerMinute());
assertValues(avg.getValuePerHour());
assertValues(avg.getValuePerWeek());
// no changes in 3rd second
values.recordOneSecond();
counts.recordOneSecond();
assertValues(avg.getValuePerSecond(), 0, 21);
assertValues(avg.getValuePerMinute());
assertValues(avg.getValuePerHour());
assertValues(avg.getValuePerWeek());
// one minute later
for (int i = 0; i < 60; i++) {
values.recordOneSecond();
counts.recordOneSecond();
}
assertValues(avg.getValuePerSecond());
assertValues(avg.getValuePerMinute(), 21);
assertValues(avg.getValuePerHour());
assertValues(avg.getValuePerWeek());
// another minute later
for (int i = 0; i < 60; i++) {
values.recordOneSecond();
counts.recordOneSecond();
}
assertValues(avg.getValuePerSecond());
assertValues(avg.getValuePerMinute(), 0, 21);
assertValues(avg.getValuePerHour());
assertValues(avg.getValuePerWeek());
// one hour
for (int i = 0; i < 60 * 60; i++) {
values.recordOneSecond();
counts.recordOneSecond();
}
assertValues(avg.getValuePerSecond());
assertValues(avg.getValuePerMinute());
assertValues(avg.getValuePerHour(), 21);
assertValues(avg.getValuePerWeek());
// one week
for (int i = 0; i < 7 * 24 * 60 * 60; i++) {
values.recordOneSecond();
counts.recordOneSecond();
}
assertValues(avg.getValuePerSecond());
assertValues(avg.getValuePerMinute());
assertValues(avg.getValuePerHour());
assertValues(avg.getValuePerWeek(), 21);
}
public void testAverageWithMissing() {
for (long m : new long[]{-42, 42}) {
TimeSeriesRecorder values = new TimeSeriesRecorder(true);
TimeSeriesRecorder counts = new TimeSeriesRecorder(true);
avg = new TimeSeriesAverage(values, counts, m);
AtomicLong value = values.getCounter();
AtomicLong count = counts.getCounter();
// initial values
assertValues(avg.getValuePerSecond());
assertValues(avg.getValuePerMinute());
assertValues(avg.getValuePerHour());
assertValues(avg.getValuePerWeek());
// no changes in first second
values.recordOneSecond();
counts.recordOneSecond();
assertValues(avg.getValuePerSecond());
assertValues(avg.getValuePerMinute());
assertValues(avg.getValuePerHour());
assertValues(avg.getValuePerWeek());
// 2 seconds
value.set(42);
count.set(2);
values.recordOneSecond();
counts.recordOneSecond();
assertValues(avg.getValuePerSecond(), 21);
assertValues(avg.getValuePerMinute());
assertValues(avg.getValuePerHour());
assertValues(avg.getValuePerWeek());
// no changes in 3rd second
values.recordOneSecond();
counts.recordOneSecond();
assertValues(avg.getValuePerSecond(), avg.getMissingValue(), 21);
assertValues(avg.getValuePerMinute());
assertValues(avg.getValuePerHour());
assertValues(avg.getValuePerWeek());
// Division by 0 reported as missing
value.set(1);
count.set(0);
values.recordOneSecond();
counts.recordOneSecond();
// one minute later
for (int i = 0; i < 60; i++) {
values.recordOneSecond();
counts.recordOneSecond();
}
assertValues(avg.getValuePerSecond());
assertValues(avg.getValuePerMinute(), 21);
assertValues(avg.getValuePerHour());
assertValues(avg.getValuePerWeek());
// another minute later
for (int i = 0; i < 60; i++) {
values.recordOneSecond();
counts.recordOneSecond();
}
assertValues(avg.getValuePerSecond());
assertValues(avg.getValuePerMinute(), avg.getMissingValue(), 21);
assertValues(avg.getValuePerHour());
assertValues(avg.getValuePerWeek());
// one hour
for (int i = 0; i < 60 * 60; i++) {
values.recordOneSecond();
counts.recordOneSecond();
}
assertValues(avg.getValuePerSecond());
assertValues(avg.getValuePerMinute());
assertValues(avg.getValuePerHour(), 21);
assertValues(avg.getValuePerWeek());
// one week
for (int i = 0; i < 7 * 24 * 60 * 60; i++) {
values.recordOneSecond();
counts.recordOneSecond();
}
assertValues(avg.getValuePerSecond());
assertValues(avg.getValuePerMinute());
assertValues(avg.getValuePerHour());
assertValues(avg.getValuePerWeek(), 21);
}
}
private void assertValues(long[] values, long... expected) {
for (int i = 0; i < expected.length; i++) {
assertEquals(expected[i], values[values.length - i - 1]);
}
for (int i = expected.length; i < values.length; i++) {
assertEquals(avg.getMissingValue(), values[values.length - i - 1]);
}
}
}