[logback-user] MDC and env-entry

4 Feb 2011

      Hi, again with another question.

With aspectj, in injecting a var in MCD, something like this...

MDC.put("code",var);

in some places, depending something, and i'm using this to generate a
diferent file for this something like

    <appender name="APPENDER"
class="ch.qos.logback.classic.sift.SiftingAppender">
        <filter class="ch.qos.logback.core.filter.EvaluatorFilter">
            <evaluator
class="ch.qos.logback.classic.boolex.JaninoEventEvaluator">
                  <expression>
                    (marker != null)
                    && (
                        (marker.contains("ASPECTJ")) ||
                        (marker.contains("SOAP")))
                  </expression>
            </evaluator>
            <onMatch>DENY</onMatch>
        </filter>
        <discriminator>
            <Key>code</Key>
             <DefaultValue>0000</DefaultValue>
          </discriminator>
          <sift>
            <appender name="FILE-${code}"
class="ch.qos.logback.core.rolling.RollingFileAppender">
                <prudent>${prudent}</prudent>

                <!-- 5 líneas de stacktrace para las excepciones -->
                <encoder
class="ch.qos.logback.classic.encoder.PatternLayoutEncoder">
                    <Pattern>%date - [%thread] - %.-20M - %L -
cn=%contextName - [%thread] - [%X{code}] - %message%n
%exception{5}</Pattern>
                </encoder>

                <rollingPolicy
class="ch.qos.logback.core.rolling.TimeBasedRollingPolicy">

<FileNamePattern>${USER_HOME}/${backupDir}${code}.%d${patronRolling}</FileNamePattern>

                    <MaxHistory>${maxHistory}</MaxHistory>
                </rollingPolicy>
             </appender>
      </sift>
   </appender>

ASPECTJ and SOAP are Markers of other traces, that i don't want to see here.
This way i get

in my root log directory ${USER_HOME}/${backupDir} files like

0001.log
0002.log

But, now i have multile apps (wars and ejbs) where i use

web.xml

<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="
http://java.sun.com/xml/ns/javaee" xmlns:web="
http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" xsi:schemaLocation="
http://java.sun.com/xml/ns/javaee
http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" id="WebApp_ID"
version="2.5">
    ...

    <env-entry>
        <description>JNDI logging context for this app</description>
        <env-entry-name>logback/context-name</env-entry-name>
        <env-entry-type>java.lang.String</env-entry-type>
        <env-entry-value>APP1</env-entry-value>
    </env-entry>
    <env-entry>
        <description>URL for configuring logback context</description>
        <env-entry-name>logback/configuration-resource</env-entry-name>
        <env-entry-type>java.lang.String</env-entry-type>
        <env-entry-value>logback.xml</env-entry-value>
    </env-entry>

    ...

</web-app>

ejb-jar.xml

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE ejb-jar PUBLIC "-//Sun Microsystems, Inc.//DTD Enterprise
JavaBeans 2.0//EN" "http://java.sun.com/dtd/ejb-jar_2_0.dtd">
<ejb-jar>
    <enterprise-beans>
        <session>
            ...

            <env-entry>
                <description>JNDI logging context for this app</description>
                <env-entry-name>logback/context-name</env-entry-name>
                <env-entry-type>java.lang.String</env-entry-type>
                <env-entry-value>EJB1</env-entry-value>
            </env-entry>
            <env-entry>
                <description>URL for configuring logback
context</description>

<env-entry-name>logback/configuration-resource</env-entry-name>
                <env-entry-type>java.lang.String</env-entry-type>
                <env-entry-value>logback.xml</env-entry-value>
            </env-entry>

            ...
        </session>
    </enterprise-beans>

    ...
</ejb-jar>

a env-entry to identificate. I know that insede file, i use cn=%contextName
to see this context but...

How could i use this context like i use ${code} to separete this files
(0001.log, 0002.log) in diferents directories.

Thanks.

-- 
Jose Juan Montiel Martinez
Eurobits Technologies
Calle Musgo 3, 1ª Planta
28023 Madrid
T +34-917080300
F +34-913077480
josejuan.montiel@eurobits.es
http://www.eurobits.com

[logback-user] MDC and env-entry

José Juan Montiel