SocketIOSessionActivityMonitor.java

/*
 * Copyright 2017 Sebastien Dionne
 *
 * 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.atmosphere.socketio;

import java.util.concurrent.Callable;
import java.util.concurrent.ScheduledExecutorService;
import java.util.concurrent.ScheduledFuture;
import java.util.concurrent.TimeUnit;

/**
 * @author Sebastien Dionne  : sebastien.dionne@gmail.com
 */
public abstract class SocketIOSessionActivityMonitor {

    protected ScheduledExecutorService executor = null;
    protected ScheduledFuture<Boolean> future = null;
    protected long delay = 0;
    protected TimeUnit timeUnit = TimeUnit.MILLISECONDS;

    public SocketIOSessionActivityMonitor(ScheduledExecutorService executor) {
        this.executor = executor;
    }

    public long getDelay() {
        return delay;
    }

    public void setDelay(long delay) {
        this.delay = delay;
    }

    public TimeUnit getTimeUnit() {
        return timeUnit;
    }

    public void setTimeUnit(TimeUnit timeUnit) {
        this.timeUnit = timeUnit;
    }

    public abstract Callable<Boolean> getCommand();

    public void start() {
        future = executor.schedule(getCommand(), delay, timeUnit);
    }

    public void cancel() {
        if (future != null) {
            future.cancel(true);
        }
    }

}