/*
 ***************************************************************************************
 *  Copyright (C) 2006 EsperTech, Inc. All rights reserved.                            *
 *  http://www.espertech.com/esper                                                     *
 *  http://www.espertech.com                                                           *
 *  ---------------------------------------------------------------------------------- *
 *  The software in this package is published under the terms of the GPL license       *
 *  a copy of which has been included with this distribution in the license.txt file.  *
 ***************************************************************************************
 */
package com.espertech.esper.example.transaction.sim;

import com.espertech.esper.client.EPRuntime;
import com.espertech.esper.example.transaction.FindMissingEventStmt;
import com.espertech.esper.example.transaction.TxnEventBase;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import java.io.IOException;
import java.util.List;

public class FeederOutputStream implements OutputStream {
    private final EPRuntime runtime;
    private final long startTimeMSec;

    // We keep increasing the current time to simulate a 30 minute window
    private long currentTimeMSec;

    public FeederOutputStream(EPRuntime runtime) {
        this.runtime = runtime;
        startTimeMSec = System.currentTimeMillis();
        currentTimeMSec = startTimeMSec;
    }

    public void output(List<TxnEventBase> bucket) throws IOException {
        log.info(".output Feeding " + bucket.size() + " events");

        long startTimeMSec = currentTimeMSec;
        long timePeriodLength = FindMissingEventStmt.TIME_WINDOW_TXNC_IN_SEC * 1000;
        long endTimeMSec = startTimeMSec + timePeriodLength;
        sendTimerEvent(startTimeMSec);

        int count = 0, total = 0;
        for (TxnEventBase theEvent : bucket) {
            runtime.sendEvent(theEvent);
            count++;
            total++;

            if (count % 1000 == 0) {
                sendTimerEvent(startTimeMSec + timePeriodLength * total / bucket.size());
                count = 0;
            }

            if (count == 10000) {
                log.info(".output Completed " + total + " events");
                count = 0;
            }
        }

        sendTimerEvent(endTimeMSec);
        currentTimeMSec = endTimeMSec;

        log.info(".output Completed bucket");
    }

    private void sendTimerEvent(long msec) {
        log.info(".sendTimerEvent Setting time to now + " + (msec - startTimeMSec));
    }

    private static final Logger log = LoggerFactory.getLogger(TxnGenMain.class);
}