| <!DOCTYPE html> |
| <html lang="en"> |
| <head> |
| |
| <meta charset="UTF-8"> |
| <title>Logging</title> |
| <meta name="description" content="Apache TomEE"> |
| <meta name="author" content="Apache TomEE"> |
| <meta name="google-translate-customization" content="f36a520c08f4c9-0a04e86a9c075ce9-g265f3196f697cf8f-10"> |
| <meta http-equiv="Pragma" content="no-cache"> |
| <meta http-equiv="Expires" content="0"> |
| <meta http-equiv="Cache-Control" content="no-store, no-cache, must-revalidate, max-age=0"> |
| |
| <!-- Le HTML5 shim, for IE6-8 support of HTML elements --> |
| <!--[if lt IE 9]> |
| <script src="http://html5shim.googlecode.com/svn/trunk/html5.js"></script> |
| <![endif]--> |
| |
| <!-- Le styles --> |
| <link href="./../resources/css/bootstrap.css" rel="stylesheet"> |
| <link href="./../resources/css/prettify.css" rel="stylesheet"> |
| <!--link href="./../resources/css/bootstrap-mods.css" rel="stylesheet"--> |
| <link href="./../resources/css/main.css" rel="stylesheet"> |
| <link href="./../resources/font-awesome-4.6.3/css/font-awesome.min.css" rel="stylesheet"> |
| |
| <script type="text/javascript"> |
| var t = encodeURIComponent(document.title.replace(/^\s+|\s+$/g,"")); |
| var u = encodeURIComponent(""+document.URL); |
| |
| function fbshare () { |
| window.open( |
| "http://www.facebook.com/sharer/sharer.php?u="+u, |
| 'Share on Facebook', |
| 'width=640,height=426'); |
| }; |
| function gpshare () { |
| window.open( |
| "https://plus.google.com/share?url="+u, |
| 'Share on Google+', |
| 'width=584,height=385'); |
| }; |
| function twshare () { |
| window.open( |
| "https://twitter.com/intent/tweet?url="+u+"&text="+t, |
| 'Share on Twitter', |
| 'width=800,height=526'); |
| }; |
| function pinshare () { |
| window.open("//www.pinterest.com/pin/create/button/?url="+u+"&media=http%3A%2F%2Ftomee.apache.org%2Fresources%2Fimages%2Ffeather-logo.png&description="+t, |
| 'Share on Pinterest', |
| 'width=800,height=526'); |
| }; |
| </script> |
| |
| <!-- Le fav and touch icons --> |
| <link rel="shortcut icon" href="./../favicon.ico"> |
| <link rel="apple-touch-icon" href="./../resources/images/apple-touch-icon.png"> |
| <link rel="apple-touch-icon" sizes="72x72" href="./../resources/images/apple-touch-icon-72x72.png"> |
| <link rel="apple-touch-icon" sizes="114x114" href="./../resources/images/apple-touch-icon-114x114.png"> |
| |
| <script src="./../resources/js/prettify.js" type="text/javascript"></script> |
| <script src="./../resources/js/jquery-latest.js"></script> |
| <script src="http://platform.twitter.com/widgets.js" type="text/javascript"></script> |
| <script src="./../resources/js/common.js"></script> |
| <script src="./../resources/js/prettyprint.js"></script> |
| <!--script src="//assets.pinterest.com/js/pinit.js" type="text/javascript" async></script//--> |
| |
| <script type="text/javascript"> |
| |
| var _gaq = _gaq || []; |
| _gaq.push(['_setAccount', 'UA-2717626-1']); |
| _gaq.push(['_setDomainName', 'apache.org']); |
| _gaq.push(['_trackPageview']); |
| |
| (function() { |
| var ga = document.createElement('script'); ga.type = 'text/javascript'; ga.async = true; |
| ga.src = ('https:' == document.location.protocol ? 'https://ssl' : 'http://www') + '.google-analytics.com/ga.js'; |
| var s = document.getElementsByTagName('script')[0]; s.parentNode.insertBefore(ga, s); |
| })(); |
| |
| </script> |
| </head> |
| |
| <body> |
| |
| <div class="topbar" data-dropdown="dropdown"> |
| <div class="fill"> |
| <div class="container"> |
| <a class="brand" href="./../index.html">Apache TomEE</a> |
| <ul class="nav"> |
| <li class="dropdown"> |
| <a class="dropdown-toggle" data-toggle="dropdown" href="#"> |
| Apache |
| <b class="caret"></b> |
| </a> |
| <ul class="dropdown-menu"> |
| <!-- <li><a href="./../misc/whoweare.html">Who we are?</a></li> --> |
| <!-- <li><a href="./../misc/heritage.html">Heritage</a></li> --> |
| <li><a href="http://www.apache.org">Apache Home</a></li> |
| <!-- <li><a href="./../misc/resources.html">Resources</a></li> --> |
| <li><a href="./../misc/contact.html">Contact</a></li> |
| <li><a href="./../misc/legal.html">Legal</a></li> |
| <li><a href="http://www.apache.org/foundation/sponsorship.html">Sponsorship</a></li> |
| <li><a href="http://www.apache.org/foundation/thanks.html">Thanks</a></li> |
| <li class="divider"/> |
| <li><a href="http://www.apache.org/security">Security</a></li> |
| </ul> |
| </li> |
| <li><a href="./../index.html">Home</a></li> |
| <li><a href="./../downloads.html">Downloads</a></li> |
| <li><a href="./../documentation.html">Documentation</a></li> |
| <li><a href="./../examples-trunk/index.html">Examples</a></li> |
| <li><a href="./../support.html">Support</a></li> |
| <li><a href="./../contribute.html">Contribute</a></li> |
| <li><a href="./../security/index.html">Security</a></li> |
| </ul> |
| |
| <!-- Google CSE Search Box Begins --> |
| <FORM class="pull-right" id="searchbox_010475492895890475512:_t4iqjrgx90" action="http://www.google.com/cse"> |
| <INPUT type="hidden" name="cx" value="010475492895890475512:_t4iqjrgx90"> |
| <INPUT type="hidden" name="cof" value="FORID:0"> |
| <INPUT size="18" width="130" style="width:130px" name="q" type="text" placeholder="Search"> |
| </FORM> |
| <!--<SCRIPT type="text/javascript" src="http://www.google.com/coop/cse/brand?form=searchbox_010475492895890475512:_t4iqjrgx90"></SCRIPT>--> |
| <!-- Google CSE Search Box Ends --> |
| </div> |
| </div> |
| </div> |
| |
| <div class="container"> |
| |
| |
| <div class="page-header"> |
| <small><a href="./../index.html">Home</a> » <a href="./../dev/">Dev</a></small><br> |
| <h1>Logging |
| |
| <div style="float: right; position: relative; bottom: -10px; "> |
| <a onclick="javascript:gpshare()" class="gp-share sprite" title="Share on Google+">share [gp]</a> |
| <a onclick="javascript:fbshare()" class="fb-share sprite" title="Share on Facebook">share [fb]</a> |
| <a onclick="javascript:twshare()" class="tw-share sprite" title="Share on Twitter">share [tw]</a> |
| <a onclick="javascript:pinshare()" class="pin-share sprite" title="Share on Pinterest">share [pin]</a> |
| <a data-toggle="modal" href="#edit" class="edit-page" title="Contribute to this Page">contribute</a> |
| </div> |
| </h1> |
| </div> |
| |
| <p><a name="Logging-LoggingforUsers"></a></p> |
| |
| <h2>Logging for Users</h2> |
| |
| <p>All logging in OpenEJB is done using the |
| openejb.base/conf/logging.properties file. When you download and extract |
| OpenEJB, you will not find this file under the openejb.base/conf directory. |
| However, when you start the server, this file magically appears. So what |
| does this give you as a user of OpenEJB? Here are some of the benefits: |
| 1. You do not have to author a logging.properties from scratch. You get one |
| with sensible defaults. |
| 1. If you did modify the default file, and you wanted to revert back to the |
| default file generated by OpenEJB, all you have to do is |
| 1. # Delete or rename the file e.g. rename it to logging.properties.BAK . |
| 1. # Restart the server</p> |
| |
| <p> |
| OpenEJB will find that the logging.properties file is missing from the |
| openejb.base/conf directory and it will automatically create a new one with |
| the default configuration. The good thing is that if you modify the |
| logging.properties file, OpenEJB will *NOT* over-write it.</p> |
| |
| <p>The default logging configuration created by OpenEJB uses |
| RollingFileAppender's. The log files are located under the |
| openejb.base/logs directory. By default it writes to just two files , |
| openejb.log and transaction.log <div class="info">:title=Embedded Testing} |
| When running tests using embedded OpenEJB, the logging.properties will be |
| ignored. You need to use a file named embedded.logging.properties instead. |
| Place this file under src/test/resources<div class="info">} |
| <a name="Logging-Loggingforcontributors/committers"></a></p> |
| |
| <h2>Logging for contributors/committers</h2> |
| |
| <p>The org.apache.openejb.util.Logger class is the one which is used for |
| logging. This class is a wrapper around log4. </p> |
| |
| <p><a name="Logging-LogCategory"></a></p> |
| |
| <h3>LogCategory</h3> |
| |
| <p>Each Logger instance belongs to a category represented by a |
| org.apache.openejb.util.LogCategory instance. Here is what the LogCategory |
| class looks like</p> |
| |
| <pre><code>public final class LogCategory { |
| private final String name; |
| public static final LogCategory OPENEJB = new LogCategory( "OpenEJB"); |
| public static final LogCategory OPENEJB_ADMIN = OPENEJB.createChild("admin"); |
| public static final LogCategory OPENEJB_STARTUP = OPENEJB.createChild("startup"); |
| public static final LogCategory OPENEJB_STARTUP_CONFIG = OPENEJB_STARTUP.createChild("config"); |
| public static final LogCategory OPENEJB_STARTUP_VALIDATION = OPENEJB_STARTUP.createChild("validation"); |
| // other categories removed for code brevity |
| private LogCategory(String name){ |
| this.name = name; |
| } |
| public String getName() { |
| return name; |
| } |
| /** |
| * Creates a child category of this category. <B>Use this method sparingly</B>. This method is to be used in only those circumstances where the name of the |
| * category is not known upfront and is a derived name. If you know the name of the category, it is highly recommended to add a static final field |
| * of type LogCategory in this class |
| * @param child |
| * @return - LogCategory |
| */ |
| public LogCategory createChild(String child){ |
| return new LogCategory(this.name+"."+child); |
| } |
| |
| } |
| </code></pre> |
| |
| <p>Notice carefully how each LogCategory instance is created. The |
| objective here is that each LogCategory should be a child of the OPENEJB |
| category. If you need to add a new category and you know the name of the |
| category upfront, simply open the LogCategory class and add another |
| category. For example, if you needed to add a category named SHUTDOWN, here |
| is the recommended way to add it</p> |
| |
| <pre><code>public static final LogCategory OPENEJB_SHUTDOWN = LogCategory.OPENEJB.createChild("shutdown"); |
| </code></pre> |
| |
| <p>Sometimes you may want to create a category whose name is "generated" at |
| runtime. In that case you can use the "createChild" method of the |
| LogCategory class to create this new category. For example, if you |
| wanted to create a category of Logger for every deployed module, then |
| assuming you have the moduleId information you could do something as |
| follows to create a category:</p> |
| |
| <pre><code>String moduleId = "mymodule"; |
| LogCategory generatedCategory = LogCategory.OPENEJB.createChild(moduleId); |
| </code></pre> |
| |
| <p><a name="Logging- Logger"></a></p> |
| |
| <h3> Logger</h3> |
| |
| <p>The preference is to externalize all logging messages in properties file. |
| Typically each package should have a file called Messages.properties. |
| This file should have all the keys and the corresponding messages. |
| Here are the steps you would follow to log a message: |
| * For each message you need to log, you would open the Messages.properties |
| file in the corresponding package and add a key-value pair for the |
| message. For example, if you were authoring a class called |
| org.apache.openejb.util.Connect, then you would add a key-value pair to the |
| Messages.properties file located in the org.apache.openejb.util package.</p> |
| |
| <ul> |
| <li>Obtain a Logger instance in one of the following ways:</li> |
| </ul> |
| |
| <p> |
| <em>Using the package name</em></p> |
| |
| <pre><code>Logger logger = Logger.getInstance (LogCategory.OPENEJB, |
| </code></pre> |
| |
| <p>"org.apache.openejb.util");</p> |
| |
| <p> <em> |
| Using the Class</em></p> |
| |
| <pre><code>Logger logger = Logger.getInsance(LogCategory.OPENEJB, Connect.class); |
| </code></pre> |
| |
| <p> |
| <em>Get a child Logger for an existing Logger instance</em></p> |
| |
| <pre><code>Logger logger = Logger.getInsance(LogCategory.OPENEJB, Connect.class); |
| Logger child = logger.getChildLogger("shutdown"); |
| </code></pre> |
| |
| <p> |
| <em>Get a child Logger of an existing Logger using a LogCategory</em></p> |
| |
| <pre><code>LogCategory childCategory = LogCategory.OPENEJB.createChild("shutdown"); |
| Logger logger = Logger.getInstance(childCategory,Connect.class); |
| </code></pre> |
| |
| <ul> |
| <li> Call one of the following methods passing in the key as an argument |
| <em>* debug |
| <em></em> error |
| <em></em> fatal |
| <em></em> info |
| *</em> warning</p> |
| |
| <p>Logger logger = Logger.getInstance(LogCategory.OPENEJB,Connect.class); |
| logger.info("error.file");</li> |
| </ul> |
| |
| <p> The |
| Messages.properties file under org.apache.openejb.util must have the |
| "error.file" key in it with the corresponding message.</p> |
| |
| <p><a name="Logging-LoggerInheritance "></a></p> |
| |
| <h3>Logger Inheritance </h3> |
| |
| <p> Another interesting feature of the Logging framework is inheritance. |
| Here is how it works:</p> |
| |
| <p>Say you have the following Messages.properties files in the classpath. |
| 1. org/apache/openejb/Messages.properties |
| 1. org/apache/openejb/core/Messages.properties |
| 1. org/apache/openejb/core/stateless/Messages.properties</p> |
| |
| <p> |
| |
| Then you have a class such as |
| org.apache.openejb.core.stateless.StatelessContainer (+note the package+) |
| If that class referenced a message key "classNotFound" for example, the |
| Logger would look for the message first in Messages.properties 3, then 2, |
| then 1 and so on until it found the required message. |
| This would allow better reuse of messages, more flexibility in where we put |
| the Message.properties files, as well as the added bonus in that we |
| no longer need to pass in the location of where our |
| Message.properties file is</p> |
| |
| <p><a name="Logging-Loggingforintegrators"></a></p> |
| |
| <h3>Logging for integrators</h3> |
| |
| <p>If you want to embed OpenEJB in your application and need to control the |
| logging configuration of OpenEJB, simple set the openejb.logger.external |
| system property to true. Now, its your applications' responsibility to |
| configure logging, OpenEJB will simply use your configuration.</p> |
| |
| <p><a name="Logging- OriginationoftheLoggingIdea"></a></p> |
| |
| <h3> Origination of the Logging Idea</h3> |
| |
| <p>There has been a long discussion for this logging idea. Its going to be |
| worth it to read the discussion at <a href="http://www.nabble.com/i18n-and-logging-tf3962134s2756.html">i18n and logging</a></p> |
| |
| <p>+Here is a extract from an email from David Blevins which talks about the |
| existing logging framework. The current framework is more or less the same |
| as this one, just some added features and a rewrite of the API+</p> |
| |
| <p>Each module has a file called default.logging.conf. This file contains the |
| definition of all Loggers, their appenders and warning levels. However, we |
| do not use default.logging.conf first. The basic idea is that first we look |
| for say conf/logging.conf in the openejb.base directory. If we don't |
| find it there, we look for default.logging.conf in the classpath. If |
| we did find default.logging.conf (which we should) and there is an |
| openejb.base/conf/ directory then expand the default.logging.conf to |
| openejb.base/conf/logging.conf where we expected to find the file in the |
| first place. If there was no openejb.base/conf/ directory, then it's |
| safe to assume we're running embedded (in a test case perhaps) and just use |
| the default.logging.conf and do no extra work.</p> |
| |
| <p>We have default.logging.conf which we use this way as well as |
| default.openejb.conf and now more recently users.properties and |
| groups.properties. We search on disk for the resource in |
| openejb.base/conf/ if we don't find them we unpack the default one we |
| stuffed in openejb-core jar and extract it to disk in the openejb.base/conf |
| directory if there is one -- if there isn't one we just use the default |
| file.</p> |
| |
| <p>The basic ideas behind the pattern are that: |
| 1. If you've messed up your configuration, just delete or rename the |
| respective files in your conf/ directory and new (working) ones will |
| magically appear. |
| 2. When upgrading its nice that our zip file won't overwrite any |
| existing files in conf/ |
| 3. If you're running embedded you don't have to setup any |
| directories or have any config files, we can run on defaults.</p> |
| |
| <p>The <em>ConfUtils.getConfResource</em> utility to do that pattern generically , |
| but so far we're only using it for the users.properties and |
| groups.properties files. We should be using it everywhere. |
| Having the code in multiple places has lead to some inconsistencies |
| such as we expand the default.openejb.conf file to conf/openejb.xml (not |
| even the same file extension). We really don't need the "default" |
| part in our file names and the lingering usage of the "conf" file extension |
| is something that needs to go bye-bye -- we should use properties for |
| properties files and xml for xml files, etc.</p> |
| |
| |
| |
| |
| <div id="edit" class="modal hide fade in" style="display: none; "> |
| <div class="modal-header"> |
| <a class="close" data-dismiss="modal">x</a> |
| |
| <h3>Thank you for contributing to the documentation!</h3> |
| </div> |
| <div class="modal-body"> |
| <h4>Any help with the documentation is greatly appreciated.</h4> |
| <p>All edits are reviewed before going live, so feel free to do much more than fix typos or links. If you see a page that could benefit from an entire rewrite, we'd be thrilled to review it. Don't be surprised if we like it so much we ask you for help with other pages :)</p> |
| <small>NOTICE: unless indicated otherwise on the pages in question, all editable content available from apache.org is presumed to be licensed under the Apache License (AL) version 2.0 and hence all submissions to apache.org treated as formal Contributions under the license terms.</small> |
| <!--[if gt IE 6]> |
| <h4>Internet Explorer Users</h4> |
| <p>If you are not an Apache committer, click the Yes link and enter a <i>anonymous</i> for the username and leave the password empty</p> |
| <![endif]--> |
| |
| </div> |
| <div class="modal-footer"> |
| Do you have an Apache ID? |
| <a href="javascript:void(location.href='https://cms.apache.org/redirect?uri='+escape(location.href))" class="btn">Yes</a> |
| <a href="javascript:void(location.href='https://anonymous:@cms.apache.org/redirect?uri='+escape(location.href))" class="btn">No</a> |
| </div> |
| </div> |
| <script src="./../resources/js/bootstrap-modal.js"></script> |
| |
| <footer> |
| <p>Copyright © 1999-2016 The Apache Software Foundation, Licensed under the Apache License, Version 2.0. |
| Apache TomEE, TomEE, Apache, the Apache feather logo, and the Apache TomEE project logo are trademarks of The Apache Software Foundation. |
| All other marks mentioned may be trademarks or registered trademarks of their respective owners.</p> |
| </footer> |
| |
| </div> <!-- /container --> |
| |
| <!-- Javascript |
| ================================================== --> |
| <!-- Placed at the end of the document so the pages load faster --> |
| <script src="./../resources/js/bootstrap-dropdown.js"></script> |
| |
| </body> |
| </html> |