[logback-user] logging multiple main programs

2 Oct 2013

      Hey,

I have been using logback for some time with monolithic java batch apps (ETL). I am a very part time jave programmer at my job (10% at most)

I now am working on an application that has two main programs but uses 90% of the same code base.  So one project, two jar file artifacts.
(two programs labeled people and position)

The logging is pretty simple

  *   one log file for each run
  *   log files are denoted with people_timestamp.log or position_timestamp.log
  *   error logging sends email as well as writes to the log file

this is my problem: When I run the first main program that is working it creates both log files and one is empty. I only want the one log file that is needed created.

I'm sure I'm making this way more complicated than it needs to be.

In the code base for people

PeopleXmlMain.log = LoggerFactory.getLogger("people");
PeopleXmlMain.logErr = LoggerFactory.getLogger("peopleerror");

similar for position main
PositionXmlMain.log = LoggerFactory.getLogger("position");
PositionXmlMain.logErr = LoggerFactory.getLogger("positionerror");

the config file
================================
<configuration debug="true">

    <timestamp key="bySecond" datePattern="yyyyMMdd'T'HHmmss"/>
    <!-- TODO this needs lot of changes, additions
        create a logger called applogger

    http://stackoverflow.com/questions/15140935/file-and-stdout-appenders-in-log...
    -->

    <appender name="ERROREMAIL" class="ch.qos.logback.classic.net.SMTPAppender">
        <cyclicBufferTracker class="ch.qos.logback.core.spi.CyclicBufferTracker">
            <!-- send just one log entry per email -->
            <bufferSize>1</bufferSize>
        </cyclicBufferTracker>
        <smtpHost>autosmtp.richmond.edu</smtpHost>
        <to>someone@somedomain.com</to>
        <!-- <to>ANOTHER_EMAIL_DESTINATION</to> additional destinations are possible -->
        <subject>Error in directory loader: %logger{20}</subject>
        <layout class="ch.qos.logback.classic.PatternLayout">
            <pattern>%date %-30(%d{HH:mm:ss.SSS} [%M]) %-5level %-33(%C{32}) - %msg%n%n%ex%n%n</pattern>
        </layout>
    </appender>

    <appender name="ERROREMAILPEOPLE" class="ch.qos.logback.classic.net.SMTPAppender">
        <cyclicBufferTracker class="ch.qos.logback.core.spi.CyclicBufferTracker">
            <!-- send just one log entry per email -->
            <bufferSize>1</bufferSize>
        </cyclicBufferTracker>
        <smtpHost>autosmtp.richmond.edu</smtpHost>
        <to>someone@somedomain.com</to>
        <!-- <to>ANOTHER_EMAIL_DESTINATION</to> additional destinations are possible -->
        <subject>Error in People2Xml: %logger{20}</subject>
        <layout class="ch.qos.logback.classic.PatternLayout">
            <pattern>%date %-30(%d{HH:mm:ss.SSS} [%M]) %-5level %-33(%C{32}) - %msg%n%n%ex%n%n</pattern>
        </layout>
    </appender>

    <appender name="ERROREMAILPOSITION" class="ch.qos.logback.classic.net.SMTPAppender">
        <cyclicBufferTracker class="ch.qos.logback.core.spi.CyclicBufferTracker">
            <bufferSize>1</bufferSize>
        </cyclicBufferTracker>
        <smtpHost>autosmtp.richmond.edu</smtpHost>
        <to>someone@somedomain.com</to>
        <subject>Error in Position2Xml: %logger{20}</subject>
        <layout class="ch.qos.logback.classic.PatternLayout">
            <pattern>%date %-30(%d{HH:mm:ss.SSS} [%M]) %-5level %-33(%C{32}) - %msg%n%n%ex%n%n</pattern>
        </layout>
    </appender>

    <appender name="STDOUT" class="ch.qos.logback.core.ConsoleAppender">
        <!-- encoders are assigned the type
     ch.qos.logback.classic.encoder.PatternLayoutEncoder by default -->
        <encoder>
            <pattern>%-40(%d{HH:mm:ss.SSS} [%M]) %-5level %-36(%C{32}) - %msg%n</pattern>
        </encoder>
    </appender>

    <appender name="FILEPEOPLE" class="ch.qos.logback.core.FileAppender">
        <file>/somepath/logs/people_${bySecond}.log</file>
        <append>true</append>
        <!-- encoders are assigned the type
             ch.qos.logback.classic.encoder.PatternLayoutEncoder by default -->
        <encoder>
            <pattern>%-40(%d{HH:mm:ss.SSS} [%M]) %-5level %-36(%C{32}) - %msg%n</pattern>
        </encoder>
    </appender>

    <appender name="FILEPOSITION" class="ch.qos.logback.core.FileAppender">
        <file>/somepath/logs/position_${bySecond}.log</file>
        <append>true</append>
        <!-- encoders are assigned the type
             ch.qos.logback.classic.encoder.PatternLayoutEncoder by default -->
        <encoder>
            <pattern>%-40(%d{HH:mm:ss.SSS} [%M]) %-5level %-36(%C{32}) - %msg%n</pattern>
        </encoder>
    </appender>
<!-- suppress apache ldap info log messages -->
    <logger name="org.apache" level="warn" />
    <logger name="Error" level="error">
        <appender-ref ref="ERROREMAIL" />
    </logger>

    <logger name="people" level="info">
        <appender-ref ref="FILEPEOPLE" />
        <appender-ref ref="ERROREMAIL" />
    </logger>
    <logger name="position" level="info">
        <appender-ref ref="FILEPOSITION" />
        <appender-ref ref="ERROREMAIL" />
    </logger>

    <logger name="peopleerror" level="info">
        <appender-ref ref="ERROREMAILPEOPLE" />
    </logger>
    <logger name="positionerror" level="info">
        <appender-ref ref="ERROREMAILPOSITION" />
    </logger>

    <root level="info">
        <appender-ref ref="STDOUT" />
    </root>
</configuration>

--
Eric Palmer
Web Services
U of Richmond

To report technical issues, obtain technical support or make requests for enhancements please visit http://web.richmond.edu/contact/technical-support.html

[logback-user] logging multiple main programs

Palmer, Eric