com.sms.server.service.JobService.java Source code

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Here is the source code for com.sms.server.service.JobService.java

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package com.sms.server.service;

import com.sms.server.dao.JobDao;
import com.sms.server.dao.MediaDao;
import com.sms.server.domain.Job;
import com.sms.server.domain.Job.JobType;
import com.sms.server.domain.MediaElement;
import java.sql.Timestamp;
import java.util.Calendar;
import java.util.List;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.scheduling.annotation.EnableScheduling;
import org.springframework.scheduling.annotation.Scheduled;
import org.springframework.stereotype.Service;

/**
 *
 * @author scott2ware
 */

@Service
@EnableScheduling
public class JobService {

    private static final String CLASS_NAME = "JobService";

    @Autowired
    private JobDao jobDao;

    @Autowired
    private MediaDao mediaDao;

    @Autowired
    private AdaptiveStreamingService adaptiveStreamingService;

    private static final Integer INACTIVE_PERIOD_IN_MINUTES = 60;

    // Creates a new job in the database and updates media statistics
    public Job createJob(byte type, String username, MediaElement mediaElement) {
        // Check parameters
        if (username == null || mediaElement == null) {
            return null;
        }

        // Create new job in database
        Job job = new Job(null, type, username, mediaElement.getID(), null, null, null, null);
        jobDao.createJob(job);
        job = jobDao.getLatestJobByUsername(username);

        // Update media element and parent media element if necessary
        mediaDao.updateLastPlayed(mediaElement.getID());

        mediaElement = mediaDao.getMediaElementByPath(mediaElement.getParentPath());

        if (mediaElement != null) {
            mediaDao.updateLastPlayed(mediaElement.getID());
        }

        return job;
    }

    // Check for and end inactive jobs every 15 minutes
    @Scheduled(fixedDelay = 900000)
    private void cleanupJobs() {
        List<Job> jobs = jobDao.getActiveJobs();

        // If there are no jobs to process don't bother going any further
        if (jobs == null) {
            return;
        }

        // Get current time minus 60 minutes
        Calendar calendar = Calendar.getInstance();
        calendar.add(Calendar.MINUTE, -INACTIVE_PERIOD_IN_MINUTES);

        // Timestamp to compare to a jobs last activity
        Timestamp inactivePeriod = new java.sql.Timestamp(calendar.getTime().getTime());

        // Check for inactive jobs which have not been ended
        for (Job job : jobs) {
            if (job.getLastActivity().before(inactivePeriod)) {
                if (job.getType() == JobType.ADAPTIVE_STREAM) {
                    adaptiveStreamingService.endProcess(job.getID());
                }

                jobDao.updateEndTime(job.getID());
            }
        }
    }
}