200a40b332
git-svn-id: http://svn.us.apache.org/repos/asf/tuscany@1640879 13f79535-47bb-0310-9956-ffa450edef68
183 lines
7.8 KiB
HTML
183 lines
7.8 KiB
HTML
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<!--
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Licensed to the Apache Software Foundation (ASF) under one or more
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contributor license agreements. See the NOTICE file distributed with
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this work for additional information regarding copyright ownership.
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The ASF licenses this file to You under the Apache License, Version 2.0
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(the "License"); you may not use this file except in compliance with
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the License. You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE- 2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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-->
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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
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<HTML>
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<HEAD>
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<!-- generateKeywords macro -->
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<META name="description" content="Apache Tuscany">
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<META name="keywords" content="apache, apache tuscany, tuscany, service, services, fabric, soa, service oriented architecture, sca, service component architecture, das, sdo, csa, ruby, opensource">
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<!-- generateKeywords macro end -->
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<LINK type="text/css" rel="stylesheet" href="http://tuscany.apache.org/stylesheets/default.css">
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<LINK rel="SHORTCUT ICON" href="https://cwiki.apache.org/confluence/display/TUSCANY/$images/favicon.ico">
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<TITLE>Apache Tuscany : Tuscany.TuscanyJava.DAS Java Overview.Improved logging</TITLE>
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<META http-equiv="Content-Type" content="text/html;charset=UTF-8"></HEAD>
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<BODY onload="init()">
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<!-- topNav macro -->
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<TABLE valign="top" border="0" cellspacing="0" cellpadding="0" width="100%" background="http://tuscany.apache.org/images/TuscanyLogoNEW_Text_120px_bg.jpg">
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<TR>
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<TD valing="top" align="left">
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<A href="https://cwiki.apache.org/confluence/pages/viewpage.action?spaceKey=TUSCANY&title=$siteroot"><IMG src="http://tuscany.apache.org/images/TuscanyLogoNEW_Text_120px_bg.jpg" height="91" width="25" border="0"></A>
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</TD>
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<TD>
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<A href="http://tuscany.apache.org/"><IMG src="http://tuscany.apache.org/images/TuscanyLogo.jpg" border="0"></A>
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</TD>
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<TD width="100%">
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</TD>
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<!-- Adds the edit page link to the top banner-->
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<TD valign="bottom">
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<DIV style="padding: 2px 10px; margin: 0px;">
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<A href="https://cwiki.apache.org/confluence/pages/editpage.action?pageId=52840">
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<IMG src="http://tuscany.apache.org/images/notep_16.gif" height="16" width="16" border="0" align="absmiddle" title="Edit Page"></A>
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</DIV>
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</TD>
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</TR>
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</TABLE>
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<!-- topNav macro end -->
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<!-- breadCrumbs macro -->
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<TABLE border="0" cellpadding="2" cellspacing="0" width="100%">
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<TR class="topBar">
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<TD align="left" valign="middle" class="topBarDiv" nowrap="true" width="100%">
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<A href="home.html" title="Apache Tuscany">Apache Tuscany</A> > <A href="home.html" title="Home">Home</A> > <A href="das-overview.html" title="DAS Overview">DAS Overview</A> > <A href="das-java.html" title="DAS Java">DAS Java</A> > <A href="das-java-documentation-menu.html" title="DAS Java Documentation Menu">DAS Java Documentation Menu</A> > <A href="das-java-developer-guide.html" title="DAS Java Developer Guide">DAS Java Developer Guide</A> > <A href="rdb-das-java.html" title="RDB DAS Java">RDB DAS Java</A> > <A href="rdb-das-user-guide.html" title="RDB DAS - User Guide">RDB DAS - User Guide</A> > <A href="" title="Tuscany.TuscanyJava.DAS Java Overview.Improved logging">Tuscany.TuscanyJava.DAS Java Overview.Improved logging</A>
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</TD>
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<TD align="right" valign="middle" class="topBarDiv" align="left" nowrap="true">
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<A href="http://mail-archives.apache.org/mod_mbox/tuscany-user">User List</A> | <A href="http://mail-archives.apache.org/mod_mbox/tuscany-dev">Dev List</A> | <A href="http://issues.apache.org/jira/browse/Tuscany">Issue Tracker</A>
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</TD>
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</TR>
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</TABLE>
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<!-- breadCrumbs macro end -->
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<TABLE border="0" cellpadding="0" width="100%" bgcolor="#FFFFFF">
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<TR>
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<TD align="left" valign="top">
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<!-- pageContent macro -->
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<DIV id="PageContent">
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<DIV class="pagecontent">
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<DIV class="wiki-content">
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<H1><A name="Tuscany.TuscanyJava.DASJavaOverview.Improvedlogging-Tuscany%2FTuscanyJava%2FDASJavaOverview%2FImprovedlogging"></A>Tuscany/TuscanyJava/DAS Java Overview/Improved logging</H1>
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<H3><A name="Tuscany.TuscanyJava.DASJavaOverview.Improvedlogging-LoggingOverview"></A>Logging Overview</H3>
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<P><B>Overview</B></P>
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<UL>
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<LI>Tuscany DAS uses log4J as its logging mechanism. For more information and complete documentation on log4j, please visit their website (<A href="http://logging.apache.org/log4j/docs/" class="external-link" rel="nofollow">http://logging.apache.org/log4j/docs/</A>)</LI>
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</UL>
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<P><B>Using log while contributting for Tuscany DAS code</B></P>
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<UL>
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<LI>While contributing to DAS code, please follow the following guidelines to add logging to your class
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<BR class="atl-forced-newline">
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<EM>Instantiate a logger</EM>
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<BR class="atl-forced-newline">
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- There is a logger factory available in org.apache.tuscany.das.rdb.util - To use it
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<UL>
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<LI>private final Logger logger = LoggerFactory.INSTANCE.getLogger(MappingWrapper.class);</LI>
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</UL>
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</LI>
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</UL>
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<P>- To instrument your code with logging capabilities</P>
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<UL>
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<LI>
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<UL>
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<LI>if(this.logger.isDebugEnabled())
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<UL>
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<LI>this.logger.debug("your debug message");</LI>
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</UL>
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</LI>
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</UL>
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</LI>
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</UL>
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<P>Note: As a performance enhancement, please surround your debug code with a check to see if debug is enabled or not.</P>
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<P><B>Configuring DAS logging (log4j)</B></P>
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<UL>
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<LI><EM>Configuring with Tomcat</EM>
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<BR class="atl-forced-newline">
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There are two ways to configure log4j in Tomcat :
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<UL>
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<LI>- Having a global log4j.properties inside %CATALINA_HOME%\common\classes
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<BR class="atl-forced-newline">
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- Having a global log4j.properties inside your own web app at WEB-INF\classes</LI>
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</UL>
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</LI>
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</UL>
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<P><B>Sample log4j.properties</B></P>
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<P># Set root logger level to DEBUG and its only appender to A1.</P>
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<P>log4j.rootLogger=INFO, A1</P>
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<P># A1 is set to be a ConsoleAppender.</P>
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<P>log4j.appender.A1=org.apache.log4j.ConsoleAppender</P>
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<P># A1 uses PatternLayout.</P>
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<P>log4j.appender.A1.layout=org.apache.log4j.PatternLayout log4j.appender.A1.layout.ConversionPattern=[DAS RDB] - %c{1}.%M (%L) : %m %n</P>
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<P># Print only messages of level WARN or above in the package com.foo.</P>
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<P>log4j.logger.org.apache.tuscany=OFF ** For further information, please follow the link : <A href="http://tomcat.apache.org/faq/logging.html" class="external-link" rel="nofollow">Tomcat FAQ - Logging</A></P>
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</DIV>
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</DIV>
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</DIV>
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<!-- pageContent macro end -->
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</TD>
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</TR>
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</TABLE>
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<!-- footer macro -->
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<SCRIPT src="http://www.google-analytics.com/urchin.js" type="text/javascript">
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</SCRIPT>
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<SCRIPT type="text/javascript">
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_uacct = "UA-1174707-5";
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urchinTracker();
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</SCRIPT>
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<A href="http://www.statcounter.com/" target="_blank"><IMG src="http://c26.statcounter.com/counter.php?sc_project=2619156&java=0&security=94bd7e7d&invisible=0" alt="website stats" border="0"></A>
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<DIV class="footer">
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Copyright <20> 2003-2012, The Apache Software Foundation </BR>
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Apache Tuscany and the Apache Tuscany project logo are trademarks of The Apache Software Foundation.
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</DIV>
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<!-- footer macro end -->
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</BODY>
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</HTML>
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