/*
* 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.brooklyn.util.collections;
import static org.apache.brooklyn.util.time.Duration.ONE_MILLISECOND;
import static org.testng.Assert.assertEquals;
import java.util.List;
import org.apache.brooklyn.util.collections.MutableMap;
import org.apache.brooklyn.util.collections.TimeWindowedList;
import org.apache.brooklyn.util.collections.TimestampedValue;
import org.apache.brooklyn.util.time.Duration;
import org.testng.annotations.Test;
import com.google.common.collect.Lists;
@SuppressWarnings({"rawtypes","unchecked"})
public class TimeWindowedListTest {
private static final Duration TEN_MILLISECONDS = Duration.millis(10);
private static final Duration HUNDRED_MILLISECONDS = Duration.millis(100);
private static final Duration TWO_MILLISECONDS = Duration.millis(2);
@Test
public void testKeepsMinVals() {
TimeWindowedList list = new TimeWindowedList<Object>(MutableMap.of("timePeriod", 1L, "minVals", 2));
assertEquals(list.getValues(2L), timestampedValues());
list.add("a", 0L);
assertEquals(list.getValues(2L), timestampedValues("a", 0L));
list.add("b", 100L);
assertEquals(list.getValues(102L), timestampedValues("a", 0L, "b", 100L));
list.add("c", 200L);
assertEquals(list.getValues(202L), timestampedValues("b", 100L, "c", 200L));
}
@Test
public void testKeepsOnlyRecentVals() {
TimeWindowedList list = new TimeWindowedList<Object>(MutableMap.of("timePeriod", 1000L));
list.add("a", 0L);
list.add("b", 100L);
assertEquals(list.getValues(1000L), timestampedValues("a", 0L, "b", 100L));
assertEquals(list.getValues(1100L), timestampedValues("b", 100L));
assertEquals(list.getValues(1101L), Lists.newArrayList());
}
@Test
public void testKeepsMinExpiredVals() {
TimeWindowedList list = new TimeWindowedList<Object>(MutableMap.of("timePeriod", 1000L, "minExpiredVals", 1));
list.add("a", 0L);
list.add("b", 100L);
assertEquals(list.getValues(1001L), timestampedValues("a", 0L, "b", 100L));
assertEquals(list.getValues(1101L), timestampedValues("b", 100L));
}
@Test
public void testGetsSubSetOfRecentVals() {
TimeWindowedList list = new TimeWindowedList<Object>(Duration.ONE_SECOND);
list.add("a", 0L);
list.add("b", 100L);
assertEquals(list.getValuesInWindow(100L, HUNDRED_MILLISECONDS), timestampedValues("a", 0L, "b", 100L));
assertEquals(list.getValuesInWindow(101L, ONE_MILLISECOND), timestampedValues("b", 100L));
}
@Test
public void testGetsSubSetOfValsIncludingOneMinExpiredVal() {
TimeWindowedList list = new TimeWindowedList<Object>(MutableMap.of("timePeriod", 1000L, "minExpiredVals", 1));
list.add("a", 0L);
list.add("b", 100L);
assertEquals(list.getValuesInWindow(100L, HUNDRED_MILLISECONDS), timestampedValues("a", 0L, "b", 100L));
assertEquals(list.getValuesInWindow(101L, TWO_MILLISECONDS), timestampedValues("a", 0L, "b", 100L));
assertEquals(list.getValuesInWindow(102L, ONE_MILLISECOND), timestampedValues("b", 100L));
assertEquals(list.getValuesInWindow(1001L, ONE_MILLISECOND), timestampedValues("b", 100L));
}
@Test
public void testGetsWindowWithMinWhenEmpty() {
TimeWindowedList list = new TimeWindowedList<Object>(MutableMap.of("timePeriod", 1L, "minVals", 1));
assertEquals(list.getValuesInWindow(1000L, TEN_MILLISECONDS), timestampedValues());
}
@Test
public void testGetsWindowWithMinExpiredWhenEmpty() {
TimeWindowedList list = new TimeWindowedList<Object>(MutableMap.of("timePeriod", 1L, "minExpiredVals", 1));
assertEquals(list.getValuesInWindow(1000L, TEN_MILLISECONDS), timestampedValues());
}
@Test
public void testGetsWindowWithMinValsWhenExpired() {
TimeWindowedList list = new TimeWindowedList<Object>(MutableMap.of("timePeriod", 1L, "minVals", 1));
list.add("a", 0L);
list.add("b", 1L);
assertEquals(list.getValuesInWindow(1000L, TEN_MILLISECONDS), timestampedValues("b", 1L));
}
@Test
public void testZeroSizeWindowWithOneExpiredContainsOnlyMostRecentValue() {
TimeWindowedList list = new TimeWindowedList<Object>(MutableMap.of("timePeriod", 0L, "minExpiredVals", 1));
list.add("a", 0L);
assertEquals(list.getValuesInWindow(0L, HUNDRED_MILLISECONDS), timestampedValues("a", 0L));
assertEquals(list.getValuesInWindow(2L, ONE_MILLISECOND), timestampedValues("a", 0L));
list.add("b", 100L);
assertEquals(list.getValuesInWindow(100L, ONE_MILLISECOND), timestampedValues("b", 100L));
assertEquals(list.getValuesInWindow(102L, ONE_MILLISECOND), timestampedValues("b", 100L));
}
private <T> List<TimestampedValue<T>> timestampedValues() {
return Lists.newArrayList();
}
private <T> List<TimestampedValue<T>> timestampedValues(T v1, long t1) {
return Lists.newArrayList(new TimestampedValue<T>(v1, t1));
}
private <T> List<TimestampedValue<T>> timestampedValues(T v1, long t1, T v2, long t2) {
return Lists.newArrayList(new TimestampedValue<T>(v1, t1), new TimestampedValue<T>(v2, t2));
}
}