com.speedment.runtime.core.internal.component.StatisticsReporterSchedulerComponentImpl Maven / Gradle / Ivy
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A Speedment bundle that shades all dependencies into one jar. This is
useful when deploying an application on a server.
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/*
*
* Copyright (c) 2006-2019, Speedment, Inc. All Rights Reserved.
*
* Licensed 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 com.speedment.runtime.core.internal.component;
import com.speedment.common.injector.State;
import com.speedment.common.injector.annotation.Config;
import com.speedment.common.injector.annotation.ExecuteBefore;
import com.speedment.runtime.core.component.StatisticsReporterComponent;
import com.speedment.runtime.core.component.StatisticsReporterSchedulerComponent;
import java.util.concurrent.Executors;
import java.util.concurrent.ScheduledExecutorService;
import java.util.concurrent.TimeUnit;
import java.util.concurrent.atomic.AtomicBoolean;
/**
*
* @author Per Minborg
*/
public class StatisticsReporterSchedulerComponentImpl implements StatisticsReporterSchedulerComponent {
private final AtomicBoolean outstanding;
@Config(name = "statistics.scheduler.enabled", value = "true")
private boolean enabled;
private ScheduledExecutorService scheduler;
public StatisticsReporterSchedulerComponentImpl() {
outstanding = new AtomicBoolean();
}
@ExecuteBefore(State.INITIALIZED)
public void init() {
if (enabled) {
scheduler = Executors.newSingleThreadScheduledExecutor(r -> {
final Thread t = new Thread(r);
t.setDaemon(true);
return t;
}); // Make the threads daemon to allow speedment applications to exit via main method completion Fix #322
}
}
@ExecuteBefore(State.STARTED)
public void start(StatisticsReporterComponent src) {
if (enabled) {
scheduler.submit(src::reportStarted);
scheduler.scheduleAtFixedRate(() -> guardedCall(src::alive), 1, 1, TimeUnit.HOURS);
}
}
@ExecuteBefore(State.STOPPED)
public void stop(StatisticsReporterComponent src) {
if (enabled) {
scheduler.submit(src::reportStopped);
try {
scheduler.awaitTermination(2, TimeUnit.SECONDS);
} catch (InterruptedException ie) {
System.out.println("Unable to terminate " + StatisticsReporterSchedulerComponentImpl.class.getSimpleName());
Thread.currentThread().interrupt();
} finally {
scheduler.shutdownNow();
}
}
}
/**
* Method to guard from multiple invocations. Used to fix #708
* @param r runnable
*/
void guardedCall(Runnable r) {
if (outstanding.compareAndSet(false,true)) {
try {
r.run();
} finally {
outstanding.set(false);
}
}
}
}