RtcSessionTask.java

package com.psddev.cms.rtc;

import com.psddev.dari.db.Database;
import com.psddev.dari.db.DatabaseException;
import com.psddev.dari.db.Query;
import com.psddev.dari.util.RepeatingTask;
import org.joda.time.DateTime;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import java.util.List;

public class RtcSessionTask extends RepeatingTask {

    private static final Logger LOGGER = LoggerFactory.getLogger(RtcSessionTask.class);

    @Override
    protected DateTime calculateRunTime(DateTime currentTime) {
        return everyMinute(currentTime);
    }

    @Override
    protected void doRepeatingTask(DateTime currentTime) {
        try {
            RtcSessionTaskStatus status = Query.from(RtcSessionTaskStatus.class).first();
            long currentTimeMillis = currentTime.getMillis();

            if (status.getLastRun() < currentTimeMillis) {
                status.getState().replaceAtomically("lastRun", currentTimeMillis);

                try {
                    status.save();

                } catch (DatabaseException error) {
                    return;
                }
            }

            Query<RtcSession> query = Query
                    .from(RtcSession.class)
                    .where("lastPing < ?", Database.Static.getDefault().now() - 60L * 1000L);

            for (List<RtcSession> sessions; !(sessions = query.select(0, 100).getItems()).isEmpty();) {
                sessions.forEach(RtcSession::disconnect);
            }

        } catch (Throwable error) {
            LOGGER.debug(
                    String.format("Can't execute [%s]!", this),
                    error);
        }
    }
}