org.dspace.app.ldn.LDNQueueTimeoutChecker Maven / Gradle / Ivy

Go to download

Show more of this group Show more artifacts with this name
Show all versions of dspace-api Show documentation

DSpace core data model and service APIs.

The newest version!

/**
 * The contents of this file are subject to the license and copyright
 * detailed in the LICENSE and NOTICE files at the root of the source
 * tree and available online at
 *
 * http://www.dspace.org/license/
 */
package org.dspace.app.ldn;

import java.sql.SQLException;

import org.apache.logging.log4j.Logger;
import org.dspace.app.ldn.factory.LDNMessageServiceFactory;
import org.dspace.app.ldn.service.LDNMessageService;
import org.dspace.core.Context;

/**
 * LDN Message manager: scheduled task invoking checkQueueMessageTimeout() of {@link LDNMessageService}
 *
 * @author Francesco Bacchelli (francesco.bacchelli at 4science dot it)
 */
public class LDNQueueTimeoutChecker {

    private static final LDNMessageService ldnMessageService = LDNMessageServiceFactory.getInstance()
        .getLDNMessageService();
    private static final Logger log = org.apache.logging.log4j.LogManager.getLogger(LDNQueueTimeoutChecker.class);

    /**
     * Default constructor
     */
    private LDNQueueTimeoutChecker() {
    }

    /**
     * invokes
     * @see org.dspace.app.ldn.service.impl.LDNMessageServiceImpl#checkQueueMessageTimeout(Context)
     * to refresh the queue status of timed-out and in progressing status ldn messages:
     * according to their attempts put them back in queue or set their status as failed if maxAttempts
     * reached.
     * @return the number of managed ldnMessages.
     * @throws SQLException
     */
    public static int checkQueueMessageTimeout() throws SQLException {
        Context context = new Context(Context.Mode.READ_WRITE);
        int fixed_messages = 0;
        fixed_messages = ldnMessageService.checkQueueMessageTimeout(context);
        if (fixed_messages > 0) {
            log.info("Managed Messages x" + fixed_messages);
        }
        context.complete();
        return fixed_messages;
    }
}