/*
* Copyright 2014-2016 CyberVision, Inc.
*
* 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 org.kaaproject.kaa.client.channel.impl.channels.polling;
public abstract class CancelableCommandRunnable implements CancelableRunnable {
protected volatile Command currentCommand;
private volatile boolean isRunning = false;
@Override
public void run() {
isRunning = true;
try {
if (!Thread.currentThread().isInterrupted()) {
executeCommand();
}
} finally {
isRunning = false;
synchronized (this) {
this.notifyAll();
}
}
}
/**
* Waits until a command executed.
*/
public void waitUntilExecuted() {
while (isRunning) {
synchronized (this) {
try {
this.wait();
} catch (InterruptedException ex) { //NOSONAR
}
}
}
}
@Override
public void cancel() {
if (currentCommand != null) {
currentCommand.cancel();
}
}
protected abstract void executeCommand();
}