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Wait.java
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Wait.java
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/*
* 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.activemq.artemis.utils;
import java.util.concurrent.TimeUnit;
import java.util.concurrent.locks.LockSupport;
import org.junit.Assert;
/**
* Utility adapted from: org.apache.activemq.util.Wait
*/
public class Wait {
public static final long MAX_WAIT_MILLIS = 30 * 1000;
public static final int SLEEP_MILLIS = 100;
public static final String DEFAULT_FAILURE_MESSAGE = "Condition wasn't met";
public interface Condition {
boolean isSatisfied() throws Exception;
}
public interface LongCondition {
long getCount() throws Exception;
}
public interface ObjectCondition {
Object getObject() throws Exception;
}
public interface IntCondition {
int getCount() throws Exception;
}
public static boolean waitFor(Condition condition) throws Exception {
return waitFor(condition, MAX_WAIT_MILLIS);
}
public static void assertEquals(Object obj, ObjectCondition condition) throws Exception {
assertEquals(obj, condition, MAX_WAIT_MILLIS, SLEEP_MILLIS);
}
public static void assertEquals(long size, LongCondition condition) throws Exception {
assertEquals(size, condition, MAX_WAIT_MILLIS);
}
public static void assertEquals(long size, LongCondition condition, long timeout) throws Exception {
assertEquals(size, condition, timeout, SLEEP_MILLIS);
}
public static void assertEquals(Long size, LongCondition condition, long timeout, long sleepMillis) throws Exception {
assertEquals(size, condition, timeout, sleepMillis, false);
}
public static void assertEquals(Long size, LongCondition condition, long timeout, long sleepMillis, boolean printThreadDump) throws Exception {
boolean result = waitFor(() -> condition.getCount() == size, timeout, sleepMillis, printThreadDump);
if (!result) {
if (printThreadDump) {
System.out.println(ThreadDumpUtil.threadDump("thread dump"));
}
Assert.fail(size + " != " + condition.getCount());
}
}
public static void assertEquals(int size, IntCondition condition) throws Exception {
assertEquals(size, condition, MAX_WAIT_MILLIS);
}
public static void assertEquals(int size, IntCondition condition, long timeout) throws Exception {
assertEquals(size, condition, timeout, SLEEP_MILLIS);
}
public static void assertEquals(Object obj, ObjectCondition condition, long timeout, long sleepMillis) throws Exception {
boolean result = waitFor(() -> (obj == condition || obj.equals(condition.getObject())), timeout, sleepMillis);
if (!result) {
Assert.assertEquals(obj, condition.getObject());
}
}
public static void assertEquals(int size, IntCondition condition, long timeout, long sleepMillis) throws Exception {
boolean result = waitFor(() -> condition.getCount() == size, timeout, sleepMillis);
if (!result) {
Assert.fail(size + " != " + condition.getCount());
}
}
public static void assertTrue(Condition condition) {
assertTrue(DEFAULT_FAILURE_MESSAGE, condition);
}
public static void assertFalse(Condition condition) {
assertTrue(() -> !condition.isSatisfied());
}
public static void assertFalse(String failureMessage, Condition condition) {
assertTrue(failureMessage, () -> !condition.isSatisfied());
}
public static void assertFalse(String failureMessage, Condition condition, final long duration) {
assertTrue(failureMessage, () -> !condition.isSatisfied(), duration, SLEEP_MILLIS);
}
public static void assertFalse(Condition condition, final long duration, final long sleep) {
assertTrue(DEFAULT_FAILURE_MESSAGE, () -> !condition.isSatisfied(), duration, sleep);
}
public static void assertTrue(Condition condition, final long duration) {
assertTrue(DEFAULT_FAILURE_MESSAGE, condition, duration, SLEEP_MILLIS);
}
public static void assertTrue(String failureMessage, Condition condition) {
assertTrue(failureMessage, condition, MAX_WAIT_MILLIS);
}
public static void assertTrue(String failureMessage, Condition condition, final long duration) {
assertTrue(failureMessage, condition, duration, SLEEP_MILLIS);
}
public static void assertTrue(Condition condition, final long duration, final long sleep) {
assertTrue(DEFAULT_FAILURE_MESSAGE, condition, duration, sleep);
}
public static void assertTrue(String failureMessage, Condition condition, final long duration, final long sleep) {
boolean result = waitFor(condition, duration, sleep);
if (!result) {
Assert.fail(failureMessage);
}
}
public static boolean waitFor(final Condition condition, final long duration) throws Exception {
return waitFor(condition, duration, SLEEP_MILLIS);
}
public static boolean waitFor(final Condition condition,
final long durationMillis,
final long sleepMillis) {
return waitFor(condition, durationMillis, sleepMillis, false);
}
public static boolean waitFor(final Condition condition,
final long durationMillis,
final long sleepMillis,
final boolean printThreadDump) {
try {
final long expiry = System.nanoTime() + TimeUnit.MILLISECONDS.toNanos(durationMillis);
boolean conditionSatisified = condition.isSatisfied();
while (!conditionSatisified && System.nanoTime() - expiry < 0) {
if (sleepMillis == 0) {
Thread.yield();
} else {
LockSupport.parkNanos(TimeUnit.MILLISECONDS.toNanos(sleepMillis));
}
conditionSatisified = condition.isSatisfied();
}
if (!conditionSatisified && printThreadDump) {
System.out.println(ThreadDumpUtil.threadDump("thread dump"));
}
return conditionSatisified;
} catch (Exception e) {
throw new IllegalStateException(e);
}
}
}