org.apache.mailet.base.MailetPipelineLogging.java Source code

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Here is the source code for org.apache.mailet.base.MailetPipelineLogging.java

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 * regarding copyright ownership.  The ASF licenses this file   *
 * to you under the Apache License, Version 2.0 (the            *
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package org.apache.mailet.base;

import org.apache.mailet.Mail;
import org.apache.mailet.Mailet;
import org.apache.mailet.MailetConfig;
import org.apache.mailet.MailetContext;
import org.slf4j.Logger;

import com.google.common.base.Function;
import com.google.common.base.Optional;

public class MailetPipelineLogging {

    public static void logBeginOfMailetProcess(final Mailet mailet, final Mail mail) {
        getLogger(mailet).transform(new Function<Logger, Boolean>() {

            @Override
            public Boolean apply(Logger logger) {
                logger.debug("Entering mailet: {}\n\tmail state {}", mailet.getMailetInfo(), mail.getState());
                return true;
            }
        });
    }

    public static void logEndOfMailetProcess(final Mailet mailet, final Mail mail) {
        getLogger(mailet).transform(new Function<Logger, Boolean>() {

            @Override
            public Boolean apply(Logger logger) {
                logger.debug("End of mailet: {}\n\tmail state {}", mailet.getMailetInfo(), mail.getState());
                return true;
            }
        });
    }

    private static Optional<Logger> getLogger(Mailet mailet) {
        MailetConfig mailetConfig = mailet.getMailetConfig();
        if (mailetConfig == null) {
            return Optional.absent();
        }
        MailetContext mailetContext = mailetConfig.getMailetContext();
        if (mailetContext == null) {
            return Optional.absent();
        }
        return Optional.fromNullable(mailetContext.getLogger());
    }
}