/*
* 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.geode.internal.statistics;
import static org.apache.geode.test.dunit.Wait.waitForCriterion;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertNotNull;
import static org.junit.Assert.assertTrue;
import org.apache.geode.StatisticDescriptor;
import org.apache.geode.Statistics;
import org.apache.geode.StatisticsType;
import org.apache.geode.internal.NanoTimer;
import org.apache.geode.internal.io.MainWithChildrenRollingFileHandler;
import org.apache.geode.internal.statistics.StatisticsNotification.Type;
import org.apache.geode.test.dunit.WaitCriterion;
import org.apache.geode.test.junit.categories.IntegrationTest;
import org.jmock.Expectations;
import org.jmock.Mockery;
import org.jmock.lib.legacy.ClassImposteriser;
import org.junit.After;
import org.junit.Before;
import org.junit.Rule;
import org.junit.Test;
import org.junit.experimental.categories.Category;
import org.junit.rules.TestName;
import java.io.File;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.Iterator;
import java.util.List;
import java.util.Map;
/**
* Integration test for the SampleCollector class.
*
* @since GemFire 7.0
*/
@Category(IntegrationTest.class)
public class ValueMonitorIntegrationTest {
private Mockery mockContext;
@Rule
public TestName testName = new TestName();
@Before
public void setUp() throws Exception {
this.mockContext = new Mockery() {
{
setImposteriser(ClassImposteriser.INSTANCE);
}
};
}
@After
public void tearDown() throws Exception {
this.mockContext.assertIsSatisfied();
this.mockContext = null;
}
@Test
public void testAddRemoveListener() throws Exception {
long startTime = System.currentTimeMillis();
List<Statistics> statsList = new ArrayList<Statistics>();
StatisticsManager mockStatisticsManager = this.mockContext.mock(StatisticsManager.class,
testName.getMethodName() + "$StatisticsManager");
this.mockContext.checking(new Expectations() {
{
allowing(mockStatisticsManager).getName();
will(returnValue("mockStatisticsManager"));
allowing(mockStatisticsManager).getId();
will(returnValue(1));
allowing(mockStatisticsManager).getStartTime();
will(returnValue(startTime));
allowing(mockStatisticsManager).getStatListModCount();
will(returnValue(0));
allowing(mockStatisticsManager).getStatsList();
will(returnValue(statsList));
}
});
StatisticsSampler mockStatisticsSampler = this.mockContext.mock(StatisticsSampler.class,
testName.getMethodName() + "$StatisticsSampler");
this.mockContext.checking(new Expectations() {
{
allowing(mockStatisticsSampler).getStatisticsModCount();
will(returnValue(0));
allowing(mockStatisticsSampler).getStatistics();
will(returnValue(new Statistics[] {}));
}
});
StatArchiveHandlerConfig mockStatArchiveHandlerConfig = this.mockContext.mock(
StatArchiveHandlerConfig.class, testName.getMethodName() + "$StatArchiveHandlerConfig");
this.mockContext.checking(new Expectations() {
{
allowing(mockStatArchiveHandlerConfig).getArchiveFileName();
will(returnValue(new File("")));
allowing(mockStatArchiveHandlerConfig).getArchiveFileSizeLimit();
will(returnValue(0));
allowing(mockStatArchiveHandlerConfig).getArchiveDiskSpaceLimit();
will(returnValue(0));
allowing(mockStatArchiveHandlerConfig).getSystemId();
will(returnValue(1));
allowing(mockStatArchiveHandlerConfig).getSystemStartTime();
will(returnValue(startTime));
allowing(mockStatArchiveHandlerConfig).getSystemDirectoryPath();
will(returnValue(""));
allowing(mockStatArchiveHandlerConfig).getProductDescription();
will(returnValue("testAddRemoveListener"));
}
});
// need a real SampleCollector for this test or the monitor can't get the handler
SampleCollector sampleCollector = new SampleCollector(mockStatisticsSampler);
sampleCollector.initialize(mockStatArchiveHandlerConfig, NanoTimer.getTime(),
new MainWithChildrenRollingFileHandler());
List<StatisticsNotification> notifications = new ArrayList<>();
StatisticsListener listener = (final StatisticsNotification notification) -> {
notifications.add(notification);
};
ValueMonitor monitor = new ValueMonitor();
long timeStamp = System.currentTimeMillis();
Type type = Type.VALUE_CHANGED;
Number value = 43;
StatisticsNotification notification = createStatisticsNotification(timeStamp, type, value);
monitor.notifyListeners(notification);
assertTrue(notifications.isEmpty());
monitor.addListener(listener);
monitor.notifyListeners(notification);
assertEquals(1, notifications.size());
notification = notifications.remove(0);
assertNotNull(notification);
assertEquals(timeStamp, notification.getTimeStamp());
assertEquals(type, notification.getType());
StatisticId statId = createStatisticId(null, null);
assertEquals(value, notification.getValue(statId));
monitor.removeListener(listener);
monitor.notifyListeners(notification);
assertTrue(notifications.isEmpty());
}
@Test
public void testValueMonitorListener() throws Exception {
long startTime = System.currentTimeMillis();
TestStatisticsManager manager =
new TestStatisticsManager(1, "ValueMonitorIntegrationTest", startTime);
StatisticsSampler sampler = new TestStatisticsSampler(manager);
StatArchiveHandlerConfig mockStatArchiveHandlerConfig = this.mockContext.mock(
StatArchiveHandlerConfig.class, testName.getMethodName() + "$StatArchiveHandlerConfig");
this.mockContext.checking(new Expectations() {
{
allowing(mockStatArchiveHandlerConfig).getArchiveFileName();
will(returnValue(new File("")));
allowing(mockStatArchiveHandlerConfig).getArchiveFileSizeLimit();
will(returnValue(0));
allowing(mockStatArchiveHandlerConfig).getArchiveDiskSpaceLimit();
will(returnValue(0));
allowing(mockStatArchiveHandlerConfig).getSystemId();
will(returnValue(1));
allowing(mockStatArchiveHandlerConfig).getSystemStartTime();
will(returnValue(startTime));
allowing(mockStatArchiveHandlerConfig).getSystemDirectoryPath();
will(returnValue(""));
allowing(mockStatArchiveHandlerConfig).getProductDescription();
will(returnValue("testFoo"));
}
});
SampleCollector sampleCollector = new SampleCollector(sampler);
sampleCollector.initialize(mockStatArchiveHandlerConfig, NanoTimer.getTime(),
new MainWithChildrenRollingFileHandler());
StatisticDescriptor[] statsST1 = new StatisticDescriptor[] {
manager.createDoubleCounter("double_counter_1", "double_counter_1_desc",
"double_counter_1_units"),
manager.createIntCounter("int_counter_2", "int_counter_2_desc", "int_counter_2_units"),
manager.createLongCounter("long_counter_3", "long_counter_3_desc", "long_counter_3_units")};
StatisticsType ST1 = manager.createType("ST1_name", "ST1_desc", statsST1);
Statistics st1_1 = manager.createAtomicStatistics(ST1, "st1_1_text", 1);
Statistics st1_2 = manager.createAtomicStatistics(ST1, "st1_2_text", 2);
st1_1.incDouble("double_counter_1", 1000.0001);
st1_1.incInt("int_counter_2", 2);
st1_1.incLong("long_counter_3", 3333333333L);
st1_2.incDouble("double_counter_1", 2000.0002);
st1_2.incInt("int_counter_2", 3);
st1_2.incLong("long_counter_3", 4444444444L);
List<StatisticsNotification> notifications = new ArrayList<>();
StatisticsListener listener = (final StatisticsNotification notification) -> {
notifications.add(notification);
};
ValueMonitor monitor = new ValueMonitor().addStatistics(st1_1);
monitor.addListener(listener);
assertTrue("Unexpected notifications: " + notifications, notifications.isEmpty());
long timeStamp = NanoTimer.getTime();
sampleCollector.sample(timeStamp);
awaitAtLeastTimeoutOrUntilNotifications(notifications, 2 * 1000);
assertEquals("Unexpected notifications: " + notifications, 1, notifications.size());
StatisticsNotification notification = notifications.remove(0);
assertEquals(StatisticsNotification.Type.VALUE_CHANGED, notification.getType());
// validate 1 notification occurs with all 3 stats of st1_1
st1_1.incDouble("double_counter_1", 1.1);
st1_1.incInt("int_counter_2", 2);
st1_1.incLong("long_counter_3", 3);
timeStamp += NanoTimer.millisToNanos(1000);
sampleCollector.sample(timeStamp);
awaitAtLeastTimeoutOrUntilNotifications(notifications, 2 * 1000);
assertEquals("Unexpected notifications: " + notifications, 1, notifications.size());
notification = notifications.remove(0);
assertEquals(StatisticsNotification.Type.VALUE_CHANGED, notification.getType());
int statCount = 0;
Map<String, Number> expectedValues = new HashMap<>();
expectedValues.put("double_counter_1", 1001.1001);
expectedValues.put("int_counter_2", 4);
expectedValues.put("long_counter_3", 3333333336L);
for (StatisticId statId : notification) {
Number value = expectedValues.remove(statId.getStatisticDescriptor().getName());
assertNotNull(value);
assertEquals(value, notification.getValue(statId));
statCount++;
}
assertEquals(3, statCount);
// validate no notification occurs when no stats are updated
timeStamp += NanoTimer.millisToNanos(1000);
sampleCollector.sample(timeStamp);
awaitAtLeastTimeoutOrUntilNotifications(notifications, 2 * 1000);
assertTrue("Unexpected notifications: " + notifications, notifications.isEmpty());
// validate no notification occurs when only other stats are updated
st1_2.incDouble("double_counter_1", 3.3);
st1_2.incInt("int_counter_2", 1);
st1_2.incLong("long_counter_3", 2);
timeStamp += NanoTimer.millisToNanos(1000);
sampleCollector.sample(timeStamp);
awaitAtLeastTimeoutOrUntilNotifications(notifications, 2 * 1000);
assertTrue("Unexpected notifications: " + notifications, notifications.isEmpty());
// validate notification only contains stats added to monitor
st1_1.incInt("int_counter_2", 100);
st1_2.incInt("int_counter_2", 200);
assertEquals(2, sampleCollector.currentHandlersForTesting().size());
timeStamp += NanoTimer.millisToNanos(1000);
sampleCollector.sample(timeStamp);
awaitAtLeastTimeoutOrUntilNotifications(notifications, 2 * 1000);
assertEquals("Unexpected notifications: " + notifications, 1, notifications.size());
notification = notifications.remove(0);
assertEquals(StatisticsNotification.Type.VALUE_CHANGED, notification.getType());
statCount = 0;
expectedValues = new HashMap<>();
expectedValues.put("int_counter_2", 104);
for (StatisticId statId : notification) {
Number value = expectedValues.remove(statId.getStatisticDescriptor().getName());
assertNotNull(value);
assertEquals(value, notification.getValue(statId));
statCount++;
}
assertEquals(1, statCount);
}
private StatisticId createStatisticId(final StatisticDescriptor descriptor,
final Statistics stats) {
return new StatisticId() {
@Override
public StatisticDescriptor getStatisticDescriptor() {
return descriptor;
}
@Override
public Statistics getStatistics() {
return stats;
}
};
}
protected StatisticsNotification createStatisticsNotification(final long timeStamp,
final Type type, final Number value) {
return new StatisticsNotification() {
@Override
public long getTimeStamp() {
return timeStamp;
}
@Override
public Type getType() {
return type;
}
@Override
public Iterator<StatisticId> iterator() {
return null;
}
@Override
public Iterator<StatisticId> iterator(final StatisticDescriptor statDesc) {
return null;
}
@Override
public Iterator<StatisticId> iterator(final Statistics statistics) {
return null;
}
@Override
public Iterator<StatisticId> iterator(final StatisticsType statisticsType) {
return null;
}
@Override
public Number getValue(final StatisticId statId) throws StatisticNotFoundException {
return value;
}
};
}
/**
* Wait for at least the specified time or until notifications is >0.
*/
private static void awaitAtLeastTimeoutOrUntilNotifications(
final List<StatisticsNotification> notifications, final long timeoutMillis) {
long pollingIntervalMillis = 10;
boolean throwOnTimeout = false;
WaitCriterion wc = new WaitCriterion() {
@Override
public boolean done() {
return notifications.size() > 0;
}
@Override
public String description() {
return "waiting for notification";
}
};
waitForCriterion(wc, timeoutMillis, pollingIntervalMillis, throwOnTimeout);
}
}