Hi,
I need to replace the HttpConnectionManager of a Camel context within SMX4.5.3
because the http requests resulting from the Camel route are load-balanced
before hitting the backend server. Problem is that the connections are kept
open and no load-balancing is done. Only way I see is to either provide a
Connection-header which is currently filtered out by the default
HeaderFilterStrategy implementation or by enforcing the close of the connection
by replacing the HttpConnectionManager. Tried a few other things like
http.keepAlive=false as JVM parameter and stuff like this and nothing worked
for me. Any further ideas?
So I first tried to replace the HttpConnectionManager and/or
HeaderFilterStrategy by the following:
<bean id="httpz" class="org.apache.camel.component.http.HttpComponent">
<property name="camelContext" ref=“myTestContext"/>
<property name="httpConnectionManager" ref="myHttpConnectionManager"/>
<property name="headerFilterStrategy" ref="myHeaderFilterStrategy"/>
</bean>
<bean id="myHttpConnectionManager"
class=“playground.ForcedCloseHttpConnectionManager">
<argument value="true"/>
<property name="params" ref="myHttpConnectionManagerParams"/>
</bean>
<bean id="myHeaderFilterStrategy" class="playground.HttpHeaderFilterStrategy">
</bean>
<bean id="myHttpConnectionManagerParams"
class="org.apache.commons.httpclient.params.HttpConnectionManagerParams">
<property name="defaultMaxConnectionsPerHost" value="5"/>
</bean>
:
<camelContext id=“myTestContext”>
:
<to uri=“httpz:http://127.0.0.1:8080/test/process”/>
:
</camelContext>
The “playground.ForcedCloseHttpConnectionManager” is a copy of the
MultiThreadedHttpConnectionManager class provided by Camel with some log
messages added (enabled by the constructor argument ’true’).
The “playground.HttpHeaderFilterStrategy” is a copy of the
HttpHeaderFilterStrategy class provided by Camel - again with some log messages
added.
The log shows that the beans got initialised. Switching SMX to DEBUG level and
executing the route shows that the MultiThreadedHttpConnectionManager is still
used to handle the connections.
Thanks for any help,
harald
