114 lines
14 KiB
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114 lines
14 KiB
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<html><head><META http-equiv="Content-Type" content="text/html; charset=iso-8859-1"><title>Apache Tomcat Configuration Reference - The Channel Interceptor object</title><meta name="author" value="Filip Hanik"><meta name="email" value="fhanik@apache.org"></head><body bgcolor="#ffffff" text="#000000" link="#525D76" alink="#525D76" vlink="#525D76"><table border="0" width="100%" cellspacing="0"><!--PAGE HEADER--><tr><td><!--PROJECT LOGO--><a href="http://tomcat.apache.org/"><img src="../../images/tomcat.gif" align="right" alt="
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The Apache Tomcat Servlet/JSP Container
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" border="0"></a></td><td><font face="arial,helvetica,sanserif"><h1>Apache Tomcat 6.0</h1></font></td><td><!--APACHE LOGO--><a href="http://www.apache.org/"><img src="../../images/asf-logo.gif" align="right" alt="Apache Logo" border="0"></a></td></tr></table><table border="0" width="100%" cellspacing="4"><!--HEADER SEPARATOR--><tr><td colspan="2"><hr noshade="noshade" size="1"></td></tr><tr><!--RIGHT SIDE MAIN BODY--><td width="80%" valign="top" align="left"><table border="0" width="100%" cellspacing="4"><tr><td align="left" valign="top"><h1>Apache Tomcat Configuration Reference</h1><h2>The Channel Interceptor object</h2></td><td align="right" valign="top" nowrap="true"><img src="../../images/void.gif" width="1" height="1" vspace="0" hspace="0" border="0"></td></tr></table><table border="0" cellspacing="0" cellpadding="2"><tr><td bgcolor="#525D76"><font color="#ffffff" face="arial,helvetica.sanserif"><a name="Introduction"><strong>Introduction</strong></a></font></td></tr><tr><td><blockquote>
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<p>
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Apache Tribes supports an interceptor architecture to intercept both messages and membership notifications.
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This architecture allows decoupling of logic and opens the way for some very kewl feature add ons.
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</p>
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</blockquote></td></tr></table><table border="0" cellspacing="0" cellpadding="2"><tr><td bgcolor="#525D76"><font color="#ffffff" face="arial,helvetica.sanserif"><a name="Available Interceptors"><strong>Available Interceptors</strong></a></font></td></tr><tr><td><blockquote>
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<p>
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<ul>
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<li><code>org.apache.catalina.tribes.group.interceptors.TcpFailureDetector</code></li>
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<li><code>org.apache.catalina.tribes.group.interceptors.ThroughputInterceptor</code></li>
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<li><code>org.apache.catalina.tribes.group.interceptors.MessageDispatch15Interceptor</code></li>
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<li><code>org.apache.catalina.tribes.group.interceptors.MessageDispatchInterceptor</code></li>
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<li><code>org.apache.catalina.tribes.group.interceptors.NonBlockingCoordinator</code></li>
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<li><code>org.apache.catalina.tribes.group.interceptors.OrderInterceptor</code></li>
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<li><code>org.apache.catalina.tribes.group.interceptors.StaticMembershipInterceptor</code></li>
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<li><code>org.apache.catalina.tribes.group.interceptors.TwoPhaseCommitInterceptor</code></li>
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<li><code>org.apache.catalina.tribes.group.interceptors.DomainFilterInterceptor</code></li>
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<li><code>org.apache.catalina.tribes.group.interceptors.FragmentationInterceptor</code></li>
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<li><code>org.apache.catalina.tribes.group.interceptors.GzipInterceptor</code></li>
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</ul>
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</p>
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</blockquote></td></tr></table><table border="0" cellspacing="0" cellpadding="2"><tr><td bgcolor="#525D76"><font color="#ffffff" face="arial,helvetica.sanserif"><a name="Static Membership"><strong>Static Membership</strong></a></font></td></tr><tr><td><blockquote>
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<p>
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In addition to dynamic discovery, Apache Tribes also supports static membership, with membership verification.
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To achieve this add the <code>org.apache.catalina.tribes.group.interceptors.StaticMembershipInterceptor</code>
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underneath the <code>org.apache.catalina.tribes.group.interceptors.TcpFailureDetector</code> interceptor.
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Inside the <code>StaticMembershipInterceptor</code> you can add the static members you wish to have.
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The <code>TcpFailureDetector</code> will do a health check on the static members,and also monitor them for crashes
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so they will have the same level of notification mechanism as the members that are automatically discovered.
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<div align="left"><table cellspacing="4" cellpadding="0" border="0"><tr><td bgcolor="#023264" width="1" height="1"><img src="../../images/void.gif" width="1" height="1" vspace="0" hspace="0" border="0"></td><td bgcolor="#023264" height="1"><img src="../../images/void.gif" width="1" height="1" vspace="0" hspace="0" border="0"></td><td bgcolor="#023264" width="1" height="1"><img src="../../images/void.gif" width="1" height="1" vspace="0" hspace="0" border="0"></td></tr><tr><td bgcolor="#023264" width="1"><img src="../../images/void.gif" width="1" height="1" vspace="0" hspace="0" border="0"></td><td bgcolor="#ffffff" height="1"><pre>
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<Interceptor className="org.apache.catalina.tribes.group.interceptors.StaticMembershipInterceptor">
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<Member className="org.apache.catalina.tribes.membership.StaticMember"
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port="5678"
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securePort="-1"
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host="tomcat01.mydomain.com"
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domain="staging-cluster"
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uniqueId="{0,1,2,3,4,5,6,7,8,9}"/>
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</Interceptor>
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</pre></td><td bgcolor="#023264" width="1"><img src="../../images/void.gif" width="1" height="1" vspace="0" hspace="0" border="0"></td></tr><tr><td bgcolor="#023264" width="1" height="1"><img src="../../images/void.gif" width="1" height="1" vspace="0" hspace="0" border="0"></td><td bgcolor="#023264" height="1"><img src="../../images/void.gif" width="1" height="1" vspace="0" hspace="0" border="0"></td><td bgcolor="#023264" width="1" height="1"><img src="../../images/void.gif" width="1" height="1" vspace="0" hspace="0" border="0"></td></tr></table></div>
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</p>
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</blockquote></td></tr></table><table border="0" cellspacing="0" cellpadding="2"><tr><td bgcolor="#525D76"><font color="#ffffff" face="arial,helvetica.sanserif"><a name="Attributes"><strong>Attributes</strong></a></font></td></tr><tr><td><blockquote>
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<table border="0" cellspacing="0" cellpadding="2"><tr><td bgcolor="#828DA6"><font color="#ffffff" face="arial,helvetica.sanserif"><a name="Common Attributes"><strong>Common Attributes</strong></a></font></td></tr><tr><td><blockquote>
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<table border="1" cellpadding="5"><tr><th width="15%" bgcolor="#023264"><font color="#ffffff">Attribute</font></th><th width="85%" bgcolor="#023264"><font color="#ffffff">Description</font></th></tr><tr><td align="left" valign="center"><strong><code>className</code></strong></td><td align="left" valign="center">
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Required, as there is no default
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</td></tr><tr><td align="left" valign="center"><code>optionFlag</code></td><td align="left" valign="center">
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If you want the interceptor to trigger on certain message depending on the message's option flag,
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you can setup the interceptors flag here.
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The default value is <code>0</code>, meaning this interceptor will trigger on all messages.
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</td></tr></table>
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</blockquote></td></tr></table>
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<table border="0" cellspacing="0" cellpadding="2"><tr><td bgcolor="#828DA6"><font color="#ffffff" face="arial,helvetica.sanserif"><a name="org.apache.catalina.tribes.group.interceptors.MessageDispatch15Interceptor Attributes"><strong>org.apache.catalina.tribes.group.interceptors.MessageDispatch15Interceptor Attributes</strong></a></font></td></tr><tr><td><blockquote>
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<table border="1" cellpadding="5"><tr><th width="15%" bgcolor="#023264"><font color="#ffffff">Attribute</font></th><th width="85%" bgcolor="#023264"><font color="#ffffff">Description</font></th></tr><tr><td align="left" valign="center"><strong><code>className</code></strong></td><td align="left" valign="center">
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Required, This dispatcher uses JDK 1.5 java.util.concurrent package
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</td></tr><tr><td align="left" valign="center"><code>optionFlag</code></td><td align="left" valign="center">
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The default and hard coded value is <code>8 (org.apache.catalina.tribes.Channel.SEND_OPTIONS_ASYNCHRONOUS)</code>.
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The dispatcher will trigger on this value only, as it is predefined by Tribes.
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</td></tr></table>
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</blockquote></td></tr></table>
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<table border="0" cellspacing="0" cellpadding="2"><tr><td bgcolor="#828DA6"><font color="#ffffff" face="arial,helvetica.sanserif"><a name="org.apache.catalina.tribes.group.interceptors.MessageDispatchInterceptor Attributes"><strong>org.apache.catalina.tribes.group.interceptors.MessageDispatchInterceptor Attributes</strong></a></font></td></tr><tr><td><blockquote>
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<table border="1" cellpadding="5"><tr><th width="15%" bgcolor="#023264"><font color="#ffffff">Attribute</font></th><th width="85%" bgcolor="#023264"><font color="#ffffff">Description</font></th></tr><tr><td align="left" valign="center"><strong><code>className</code></strong></td><td align="left" valign="center">
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Required, Same implementation as <code>MessageDispatch15Interceptor</code>, but with JDK 1.4 compliance.
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</td></tr><tr><td align="left" valign="center"><code>optionFlag</code></td><td align="left" valign="center">
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The default and hard coded value is <code>8 (org.apache.catalina.tribes.Channel.SEND_OPTIONS_ASYNCHRONOUS)</code>.
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The dispatcher will trigger on this value only, as it is predefined by Tribes.
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</td></tr></table>
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</blockquote></td></tr></table>
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<table border="0" cellspacing="0" cellpadding="2"><tr><td bgcolor="#828DA6"><font color="#ffffff" face="arial,helvetica.sanserif"><a name="org.apache.catalina.tribes.group.interceptors.TcpFailureDetector Attributes"><strong>org.apache.catalina.tribes.group.interceptors.TcpFailureDetector Attributes</strong></a></font></td></tr><tr><td><blockquote>
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<table border="1" cellpadding="5"><tr><th width="15%" bgcolor="#023264"><font color="#ffffff">Attribute</font></th><th width="85%" bgcolor="#023264"><font color="#ffffff">Description</font></th></tr></table>
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</blockquote></td></tr></table>
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<table border="0" cellspacing="0" cellpadding="2"><tr><td bgcolor="#828DA6"><font color="#ffffff" face="arial,helvetica.sanserif"><a name="org.apache.catalina.tribes.group.interceptors.ThroughputInterceptor Attributes"><strong>org.apache.catalina.tribes.group.interceptors.ThroughputInterceptor Attributes</strong></a></font></td></tr><tr><td><blockquote>
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<table border="1" cellpadding="5"><tr><th width="15%" bgcolor="#023264"><font color="#ffffff">Attribute</font></th><th width="85%" bgcolor="#023264"><font color="#ffffff">Description</font></th></tr><tr><td align="left" valign="center"><code>interval</code></td><td align="left" valign="center">
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Defines the interval in number of messages when we are to report the throughput statistics.
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The report is logged to the <code>org.apache.juli.logging.LogFactory.getLog(ThroughputInterceptor.class)</code>
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logger under the <code>INFO</code> level.
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Default value is to report every <code>10000</code> messages.
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</td></tr></table>
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</blockquote></td></tr></table>
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<table border="0" cellspacing="0" cellpadding="2"><tr><td bgcolor="#828DA6"><font color="#ffffff" face="arial,helvetica.sanserif"><a name="Nested element StaticMember Attributes"><strong>Nested element StaticMember Attributes</strong></a></font></td></tr><tr><td><blockquote>
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<table border="1" cellpadding="5"><tr><th width="15%" bgcolor="#023264"><font color="#ffffff">Attribute</font></th><th width="85%" bgcolor="#023264"><font color="#ffffff">Description</font></th></tr><tr><td align="left" valign="center"><strong><code>className</code></strong></td><td align="left" valign="center">
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Only one implementation available:<code>org.apache.catalina.tribes.membership.StaticMember</code>
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</td></tr><tr><td align="left" valign="center"><strong><code>port</code></strong></td><td align="left" valign="center">
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The port that this static member listens to for cluster messages
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</td></tr><tr><td align="left" valign="center"><code>securePort</code></td><td align="left" valign="center">
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The secure port this static member listens to for encrypted cluster messages
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default value is <code>-1</code>, this value means the member is not listening on a secure port
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</td></tr><tr><td align="left" valign="center"><strong><code>host</code></strong></td><td align="left" valign="center">
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The host (or network interface) that this static member listens for cluster messages.
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Three different type of values are possible:<br>
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1. IP address in the form of "216.123.1.23"<br>
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2. Hostnames like "tomcat01.mydomain.com" or "tomcat01" as long as they resolve correctly<br>
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3. byte array in string form, for example {216,123,12,3}<br>
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</td></tr><tr><td align="left" valign="center"><strong><code>domain</code></strong></td><td align="left" valign="center">
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The logical cluster domain for this this static member listens for cluster messages.
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Two different type of values are possible:<br>
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1. Regular string values like "staging-domain" or "tomcat-cluster" will be converted into bytes
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using ISO-8859-1 encoding.
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2. byte array in string form, for example {216,123,12,3}<br>
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</td></tr><tr><td align="left" valign="center"><strong><code>uniqueId</code></strong></td><td align="left" valign="center">
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A universally uniqueId for this static member.
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The values must be 16 bytes in the following form:<br>
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1. byte array in string form, for example {0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15}<br>
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</td></tr></table>
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</blockquote></td></tr></table>
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</blockquote></td></tr></table></td></tr><!--FOOTER SEPARATOR--><tr><td colspan="2"><hr noshade="noshade" size="1"></td></tr><!--PAGE FOOTER--><tr><td colspan="2"><div align="center"><font color="#525D76" size="-1"><em>
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Copyright © 1999-2006, Apache Software Foundation
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</em></font></div></td></tr></table></body></html>
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