Subversion Repositories SmartDukaan

package com.spice.profitmandi.common.mail;

import org.apache.logging.log4j.LogManager;

import org.apache.logging.log4j.Logger;

import org.springframework.beans.factory.annotation.Autowired;

import org.springframework.stereotype.Component;

/**

 * Bridges the static mail helpers in Utils to the Spring-managed {@link MailQueue}.

 *

 * This is a deliberate compromise, not a pattern to copy. Utils.sendMail* are

 * static and called from 27 places, several of them static contexts that have no

 * bean to inject into. Converting all of them at once would be a large,

 * mechanical, and risky change to code paths that send real money-related

 * reports. Holding the queue in one place instead lets those helpers stop

 * sending inline today, and lets the call sites move at their own pace.

 *

 * New code must inject {@link MailQueue} directly. Nothing except Utils should

 * read this.

 */

@Component

public final class MailQueueHolder {

    private static final Logger LOGGER = LogManager.getLogger(MailQueueHolder.class);

    private static volatile MailQueue mailQueue;

    @Autowired

    public void setMailQueue(MailQueue queue) {

        mailQueue = queue;

    }

    /**

     * Returns null before the context has finished starting. Callers must handle

     * that rather than assume — a mail sent during startup is better dropped with

     * a log line than allowed to NPE inside a scheduled job.

     */

    public static MailQueue get() {

        if (mailQueue == null) {

            LOGGER.warn("MailQueue requested before the Spring context supplied one; mail dropped");

        }

        return mailQueue;

    }

}