/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You 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.apache.usergrid.batch.job;


import java.util.concurrent.CountDownLatch;
import java.util.concurrent.TimeUnit;
import java.util.concurrent.atomic.AtomicInteger;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import org.apache.usergrid.batch.JobExecution;
import org.apache.usergrid.batch.service.JobListener;


/**
 * Implementation of the JobListener for tests.
 */
public class TestJobListener implements JobListener {
    // public static final long WAIT_MAX_MILLIS = 250;
    public static final long WAIT_MAX_MILLIS = 60000L; // max wait 1 minutes
    private static final Logger LOG = LoggerFactory.getLogger( TestJobListener.class );
    private AtomicInteger submittedCounter = new AtomicInteger();
    private AtomicInteger failureCounter = new AtomicInteger();
    private AtomicInteger successCounter = new AtomicInteger();
    private CountDownLatch latch;



    public void setExpected(int count){
       latch = new CountDownLatch( count );
    }

    public int getSubmittedCount() {
        return submittedCounter.get();
    }


    public int getFailureCount() {
        return failureCounter.get();
    }


    public int getSuccessCount() {
        return successCounter.get();
    }


    public int getDoneCount() {
        return successCounter.get() + failureCounter.get();
    }


    public void onSubmit( JobExecution execution ) {
        if (LOG.isDebugEnabled()) {
            LOG.debug("Job execution {} submitted with count {}.", execution, submittedCounter.incrementAndGet());
        }
    }


    public void onSuccess( JobExecution execution ) {
        if (LOG.isDebugEnabled()) {
            LOG.debug("Job execution {} succeeded with count {}.", execution, successCounter.incrementAndGet());
        }

        latch.countDown();
    }


    public void onFailure( JobExecution execution ) {
        if (LOG.isDebugEnabled()) {
            LOG.debug("Job execution {} failed with count {}.", execution, failureCounter.incrementAndGet());
        }

        latch.countDown();
    }


    /**
     * block until submitted jobs are all accounted for.
     *
     * @param jobCount total submitted job
     * @param idleTime idleTime in millisecond.
     *
     * @return true when all jobs are completed (could be succeed or failed) within the given idleTime range, or {@value
     *         #WAIT_MAX_MILLIS}, whichever is smaller
     */
    public boolean blockTilDone( long idleTime ) throws InterruptedException {

        return latch.await( idleTime, TimeUnit.MILLISECONDS );
    }
}