Author: pero
Date: Tue Apr 11 09:20:28 2006
New Revision: 393256
URL: http://svn.apache.org/viewcvs?rev=393256&view=rev
Log:
JvmRouteBinderValve now support also sessionid rewriting from request parameter
jsessionid,
Add documentation for this valve to cluster-howto.xml. :-)
Modified:
tomcat/container/tc5.5.x/modules/cluster/src/share/org/apache/catalina/cluster/session/JvmRouteBinderValve.java
tomcat/container/tc5.5.x/webapps/docs/changelog.xml
tomcat/container/tc5.5.x/webapps/docs/cluster-howto.xml
Modified:
tomcat/container/tc5.5.x/modules/cluster/src/share/org/apache/catalina/cluster/session/JvmRouteBinderValve.java
URL:
http://svn.apache.org/viewcvs/tomcat/container/tc5.5.x/modules/cluster/src/share/org/apache/catalina/cluster/session/JvmRouteBinderValve.java?rev=393256&r1=393255&r2=393256&view=diff
==============================================================================
---
tomcat/container/tc5.5.x/modules/cluster/src/share/org/apache/catalina/cluster/session/JvmRouteBinderValve.java
(original)
+++
tomcat/container/tc5.5.x/modules/cluster/src/share/org/apache/catalina/cluster/session/JvmRouteBinderValve.java
Tue Apr 11 09:20:28 2006
@@ -45,12 +45,13 @@
* Valve to handle Tomcat jvmRoute takeover using mod_jk module after node
* failure. After a node crashed the next request going to other cluster node.
* Now the answering from apache is slower ( make some error handshaking. Very
- * bad with apache at my windows.). We rewrite now the cookie jsessionid
+ * bad with apache at my windows.). We rewrite now the jsessionid
* information to the backup cluster node. After the next response all client
* request goes direct to the backup node. The change sessionid send also to
all
* other cluster nodes. Well, now the session stickyness work directly to the
* backup node and traffic don't go back too restarted cluster nodes!
- *
+ * As jsessionid was created by cookie, the change JSESSIONID cookie resend
with next response.
+ *
* At all cluster node you must configure the as ClusterListener since 5.5.10
* [EMAIL PROTECTED]
org.apache.catalina.cluster.session.JvmRouteSessionIDBinderListener
JvmRouteSessionIDBinderListener}
* or before with
@@ -90,7 +91,7 @@
/**
* The descriptive information about this implementation.
*/
- protected static final String info =
"org.apache.catalina.cluster.session.JvmRouteBinderValve/1.2";
+ protected static final String info =
"org.apache.catalina.cluster.session.JvmRouteBinderValve/1.3";
/*--Instance Variables--------------------------------------*/
@@ -225,12 +226,7 @@
log.warn(sm.getString("jvmRoute.missingJvmRouteAttribute"));
return;
}
- if (request.isRequestedSessionIdFromURL()) {
- if (log.isDebugEnabled())
- log.debug(sm.getString("jvmRoute.skipURLSessionIDs"));
- } else {
- handleJvmRoute( request, response,session.getIdInternal(),
jvmRoute);
- }
+ handleJvmRoute( request, response,session.getIdInternal(),
jvmRoute);
if (log.isDebugEnabled()) {
long t2 = System.currentTimeMillis();
long time = t2 - t1;
@@ -352,7 +348,8 @@
catalinaSession.setId(newSessionID);
if (catalinaSession instanceof DeltaSession)
((DeltaSession) catalinaSession).resetDeltaRequest();
- setNewSessionCookie(request, response,newSessionID);
+ if(request.isRequestedSessionIdFromCookie())
+ setNewSessionCookie(request, response,newSessionID);
// set orginal sessionid at request, to allow application detect the
// change
if (sessionIdAttribute != null && !"".equals(sessionIdAttribute)) {
Modified: tomcat/container/tc5.5.x/webapps/docs/changelog.xml
URL:
http://svn.apache.org/viewcvs/tomcat/container/tc5.5.x/webapps/docs/changelog.xml?rev=393256&r1=393255&r2=393256&view=diff
==============================================================================
--- tomcat/container/tc5.5.x/webapps/docs/changelog.xml (original)
+++ tomcat/container/tc5.5.x/webapps/docs/changelog.xml Tue Apr 11 09:20:28 2006
@@ -105,12 +105,19 @@
</subsection>
<subsection name="Cluster">
<changelog>
+ <update>
+ Add JvmRouteBinderValve documentation at cluster-howto.xml. (pero)
+ </update>
+ <add>
+ JvmRouteBinderValve now supports now sessionid's from request and
cookies.
+ Thanks to Brian Stansberry for reporting it. (pero)
+ </add>
<fix>
<bug>38779</bug> Fix wrong jmx message arg at SimpleTcpCluster
at o.a.c.cluster.tcp.mbeans-descriptors.xml, submitted by Pawel
Tucholski (pero)
</fix>
<fix>
- Fix that after every Keep Alive Socket close a log warning is
generated TcpReplicationThread (pero)
+ Fix that not after every "Keep Alive Socket close" a log warning is
generated at TcpReplicationThread (pero)
</fix>
<fix>
<bug>39178</bug>: Now ROOT.war deployment with FarmWarDeployer is
possible (pero)
Modified: tomcat/container/tc5.5.x/webapps/docs/cluster-howto.xml
URL:
http://svn.apache.org/viewcvs/tomcat/container/tc5.5.x/webapps/docs/cluster-howto.xml?rev=393256&r1=393255&r2=393256&view=diff
==============================================================================
--- tomcat/container/tc5.5.x/webapps/docs/cluster-howto.xml (original)
+++ tomcat/container/tc5.5.x/webapps/docs/cluster-howto.xml Tue Apr 11 09:20:28
2006
@@ -854,7 +854,8 @@
autoConnect="true"
maxPoolSocketLimit="10"
keepAliveTimeout="-1"
- keepAliveMaxRequestCount="10000"/>
+ keepAliveMaxRequestCount="10000"
+ waitForAck="true" />
</source>
</p>
</section>
@@ -962,6 +963,51 @@
With <em>Cluster.setProperty(<String>,<String>)</em> you can
modify
attributes for all register managers. The method exists as MBeans operation.
</p>
+</section>
+
+<section name="Bind session after crash to failover node">
+<p>
+As you configure more then two nodes at same cluster for backup, most
loadbalancer
+send don't all your requests after failover to the same node.
+</p>
+<p>
+The JvmRouteBinderValve handle tomcat jvmRoute takeover using mod_jk module
after node
+failure. After a node crashed the next request going to other cluster node.
The JvmRouteBinderValve
+now detect the takeover and rewrite the jsessionid
+information to the backup cluster node. After the next response all client
+request goes direct to the backup node. The change sessionid send also to all
+other cluster nodes. Well, now the session stickyness work directly to the
+backup node, but traffic don't go back too restarted cluster nodes!<br/>
+As jsessionid was created by cookie, the change JSESSIONID cookie resend with
next response.
+</p>
+<p>
+You must add JvmRouteBinderValve and the corresponding cluster message
listener JvmRouteSessionIDBinderListener.
+As you add the new listener you must also add the default
ClusterSessionListener that receiver the normal cluster messages.
+
+<source>
+<Cluster className="org.apache.catalina.tcp.SimpleTcpCluster" >
+...
+ <Valve
className="org.apache.catalina.cluster.session.JvmRouteBinderValve"
+ enabled="true" sessionIdAttribute="takeoverSessionid"/>
+ <ClusterListener
className="org.apache.catalina.cluster.session.JvmRouteSessionIDBinderListener"
/>
+ <ClusterListener
className="org.apache.catalina.cluster.session.ClusterSessionListener" />
+...
+<Cluster>
+</source>
+</p>
+<p>
+<b>Hint:</b><br/>
+With attribute <i>sessionIdAttribute</i> you can change the request attribute
name that included the old session id.
+Default attribuite name is
<i>org.apache.catalina.cluster.session.JvmRouteOrignalSessionID</i>.
+</p>
+<p>
+<b>Trick:</b><br/>
+You can enable this mod_jk turnover mode via JMX before you drop a node to all
backup nodes!
+Set enable true on all JvmRouteBinderValve backups, disable worker at mod_jk
+and then drop node and restart it! Then enable mod_jk Worker and disable
JvmRouteBinderValves again.
+This use case means that only requested session are migrated.
+</p>
+
</section>
</section>
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