Arif,
Sorry about the confusion with the syntax, there was an error in one of
my previous posts. I think $org.apache.servicemix.sendEndpoint (without
the curly braces) should work fine...
Gert
Arif Mohd wrote:
Hi gert,
i have given like this
rule "Route to tap1"
when
me : Exchange( status == Exchange.ACTIVE, in : in != null )
eval(
in.xpath("${org.apache.servicemix.senderEndpoint}='cbr1'") )
then
jbi.route(
"service:http://xxx.com/bescocr_031807/tap1"; );
end
But iam getting the following exception
As of my understanding this xpath expression will be evaluated over the
message content, but in message content where we will have
"org.apache.servicemix.senderEndpoint" iam bit confused please help me out
in this regard.
ERROR - DroolsComponent - Error processing exchange InOnly[
id: ID:yyyy
status: Active
role: provider
service: {http://xxx.com/bescocr_031807}myDroolsService
endpoint: endpoint
in: <My Message>
]
org.drools.RuntimeDroolsException: javax.jbi.messaging.MessagingException:
javax.xml.xpath.XPathExpressionException
at org.drools.rule.EvalCondition.isAllowed(Unknown Source)
at org.drools.reteoo.EvalConditionNode.assertTuple(Unknown Source)
at
org.drools.reteoo.LeftInputAdapterNode.createAndAssertTuple(Unknown Source)
at org.drools.reteoo.LeftInputAdapterNode.assertObject(Unknown
Source)
at org.drools.reteoo.ObjectSource.propagateAssertObject(Unknown
Source)
at org.drools.reteoo.AlphaNode.assertObject(Unknown Source)
at org.drools.reteoo.ObjectSource.propagateAssertObject(Unknown
Source)
at org.drools.reteoo.AlphaNode.assertObject(Unknown Source)
at org.drools.reteoo.ObjectSource.propagateAssertObject(Unknown
Source)
at org.drools.reteoo.ObjectTypeNode.assertObject(Unknown Source)
at org.drools.reteoo.Rete.assertObject(Unknown Source)
at org.drools.reteoo.ReteooRuleBase.assertObject(Unknown Source)
at org.drools.reteoo.ReteooWorkingMemory.doAssertObject(Unknown
Source)
at org.drools.common.AbstractWorkingMemory.assertObject(Unknown
Source)
at org.drools.common.AbstractWorkingMemory.assertObject(Unknown
Source)
at
org.apache.servicemix.drools.model.JbiHelper.<init>(JbiHelper.java:57)
at
org.apache.servicemix.drools.DroolsEndpoint.populateWorkingMemory(DroolsEndpoint.java:159)
at
org.apache.servicemix.drools.DroolsEndpoint.drools(DroolsEndpoint.java:149)
at
org.apache.servicemix.drools.DroolsEndpoint.process(DroolsEndpoint.java:141)
at
org.apache.servicemix.common.AsyncBaseLifeCycle.doProcess(AsyncBaseLifeCycle.java:489)
at
org.apache.servicemix.common.AsyncBaseLifeCycle.processExchange(AsyncBaseLifeCycle.java:441)
at
org.apache.servicemix.common.BaseLifeCycle.onMessageExchange(BaseLifeCycle.java:46)
at
org.apache.servicemix.jbi.messaging.DeliveryChannelImpl.processInBound(DeliveryChannelImpl.java:593)
at
org.apache.servicemix.jbi.nmr.flow.AbstractFlow.doRouting(AbstractFlow.java:174)
at
org.apache.servicemix.jbi.nmr.flow.seda.SedaFlow.doRouting(SedaFlow.java:176)
at
org.apache.servicemix.jbi.nmr.flow.seda.SedaQueue$1.run(SedaQueue.java:134)
at
edu.emory.mathcs.backport.java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:665)
at
edu.emory.mathcs.backport.java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:690)
at java.lang.Thread.run(Thread.java:595)
Caused by: javax.jbi.messaging.MessagingException:
javax.xml.xpath.XPathExpressionException
at
org.apache.servicemix.expression.JAXPXPathExpression.evaluate(JAXPXPathExpression.java:106)
at org.apache.servicemix.drools.model.Message.xpath(Message.java:54)
at
org.apache.servicemix.drools.Rule_Route_to_tap1_0.eval0(Rule_Route_to_tap1_0.java:8)
at
org.apache.servicemix.drools.Rule_Route_to_tap1_0Eval0Invoker.evaluate(Rule_Route_to_tap1_0Eval0Invoker.java:19)
... 29 more
Caused by: javax.xml.xpath.XPathExpressionException
at
com.sun.org.apache.xpath.internal.jaxp.XPathExpressionImpl.evaluate(XPathExpressionImpl.java:191)
at
org.apache.servicemix.expression.JAXPBooleanXPathExpression.evaluateXPath(JAXPBooleanXPathExpression.java:39)
at
org.apache.servicemix.expression.JAXPXPathExpression.evaluate(JAXPXPathExpression.java:99)
... 32 more
Caused by: javax.xml.transform.TransformerException: Unknown error in XPath.
at com.sun.org.apache.xpath.internal.XPath.execute(XPath.java:296)
at com.sun.org.apache.xpath.internal.XPath.execute(XPath.java:234)
at
com.sun.org.apache.xpath.internal.jaxp.XPathExpressionImpl.eval(XPathExpressionImpl.java:123)
at
com.sun.org.apache.xpath.internal.jaxp.XPathExpressionImpl.eval(XPathExpressionImpl.java:97)
at
com.sun.org.apache.xpath.internal.jaxp.XPathExpressionImpl.evaluate(XPathExpressionImpl.java:178)
... 34 more
Caused by: java.lang.NullPointerException
at
org.apache.servicemix.expression.MessageVariableResolver.resolveVariable(MessageVariableResolver.java:63)
at
com.sun.org.apache.xpath.internal.jaxp.JAXPVariableStack.getVariableOrParam(JAXPVariableStack.java:60)
at
com.sun.org.apache.xpath.internal.operations.Variable.execute(Variable.java:213)
at
com.sun.org.apache.xpath.internal.operations.Operation.execute(Operation.java:106)
at com.sun.org.apache.xpath.internal.XPath.execute(XPath.java:268)
... 38 more
Gert Vanthienen wrote:
Arif Mohd,
Doesn't the same syntax also works with servicemix-drools? Something like
eval( in.xpath("$org.apache.servicemix.senderEndpoint ...") )
The most convenient way to create your own Auditor by extending
ServiceMix's AbstractAuditor. Secondly, you have to register your
auditor in the <sm:services/> section in conf/servicemix.xml. From that
moment on, every message exchange that flows through the ESB, will
trigger your Auditor's exchangeSent() method, so this allows you to do
logging, archiving, ...
Gert
Arif Mohd wrote:
Hi Gert,
Firstly i want to know the sender endpoint from drools component(i.e, i
want to know how to write a rule for determining sender endpoint)
Secondly you are talking about message auditor, could you please
elobarate
how to do this? if possible with example.
Gert Vanthienen wrote:
Arif Mohd,
I think this is possible if you use the
${org.apache.servicemix.senderEndpoint} property in your CBR's xpath
expressions to determine the sender endpoint. However, if you use the
tap's for debugging purposes, I would suggest you build a message
auditor that logs the messages somehow (whatever is done by your
wiretaps right now). This way, if you do not need the logging, you
simply disable the auditor in your ServiceMix configuration.
This would also allow you to remove all debugging configuration from
your SA, so it only contains real routing/service configuration. This
improves the maintainability/readability of your configuration a lot
(recently done that for one of my own projects, which also had wiretaps
all over...)
Gert
Arif Mohd wrote:
Thank you gert,
1) Iam able to call my rules now without any error.
2) The example i was using is simply routing a message based on the
content of message, which can be easily done with Content Based Router
Now i want to do routing based on the source component of the
message
from where the message is coming i.e, i want to remove the tap's(used
for
debugging) at runtime using drools.
My component setup is
JMS queue(Consumer)-->eip:Tap1-->eip:Content Based
Router-->eip:Tap2--->eip:Transformer
Now i want to enable/disable Tap1 and Tap2 during runtime by using
drools,
for that purpose i planned to have my component setup as follows
JMS
queue(Consumer)-->SA(DroolsComponent)eip:Tap1-->SA(DroolsComponent)--->eip:Content
Based
Router-->SA(DroolsComponent)--->eip:Tap2--->SA(DroolsComponent)-->eip:Transformer
the logic in rules files should be as follows
if source component is JMS queue, route to Tap1
if source component is Tap1, route to Content based router
if source component is ContentBaseRouter, route to Tap2
if source component is Tap2, route to Transformer
How can i write this kind of rules,please help me in this regard.
Also let me know is it a feasible way of adding/removing components
logically?
Gert Vanthienen wrote:
Arif,
You can find a description on how to form this kind of URIs on
http://incubator.apache.org/servicemix/uris.html.
If you think the URI is correct but still have these 'Cannot find
route
to ...' errors, you can use a JMX console to verify which endpoints
are
actually available on the ESB. I think your service URI contained the
endpoint name, where it should only hold the service name.
Gert
Arif Mohd wrote:
Hi Rabi,
I didn't understand this concept of giving service name as
"service:http://xxx.com/bescocr_031807/tap1"; but still it is not
working
Can you please elobarate what is the meaning of the above
statement,
i
agree that previously i have missed to preceede the service name with
namespace i.e, i should have given like
jbi.route( "service:bescocr:tap1" );
But even the above statement is not working
rabi wrote:
in your routing.drl replace
jbi.route( "bescocr::tap1" ); with
jbi.route("service:http://xxx.com/bescocr_031807
<https://webmail.wipro.com/exchweb/bin/redir.asp?URL=http://xxx.com/bescocr_031807>
/tap1");
and jbi.route( "bescocr::tap2" ); with
jbi.route("service:http://xxx.com/bescocr_031807
<https://webmail.wipro.com/exchweb/bin/redir.asp?URL=http://xxx.com/bescocr_031807>
/tap2");
Regards,
Rabi Mishra
http://rabisblog.blogspot.com/
________________________________
From: Arif Mohd [mailto:[EMAIL PROTECTED]
Sent: Wed 6/20/2007 7:25 PM
To: [email protected]
Subject: Problem while invoking rule by using drools component
Hi,
Iam having the following setup
JMS queue(Consumer)-->eip:Content Based
Router-->SA(DroolsComponent)-->eip:TAP1 or eip:TAP2(Based on rule
base)
part of xbean.xml for "eip:Content Based Router" is
<eip:routing-rule>
<eip:predicate>
<eip:xpath-predicate xpath="/Record/eid = 100"
namespaceContext="#nsContext" />
</eip:predicate>
<eip:target>
<eip:exchange-target service="bescocr:myDroolsService" />
</eip:target>
</eip:routing-rule>
xbean.xml for DroolsComponent(SU) is
<beans xmlns:drools="http://servicemix.apache.org/drools/1.0";
xmlns:bescocr="http://xxx.com/bescocr_031807";>
<drools:endpoint
service="bescocr:myDroolsService"
endpoint="endpoint"
ruleBaseResource="classpath:routing.drl"/>
</beans>
routing.drl is
package org.apache.servicemix.drools
import org.apache.servicemix.drools.model.Exchange;
global org.apache.servicemix.drools.model.JbiHelper jbi;
rule "Route to tap1"
when
me : Exchange( status == Exchange.ACTIVE, in : in !=
null
)
eval( in.xpath("/Record/eid = 100") )
then
jbi.route( "bescocr::tap1" );
end
rule "Route to tap2"
when
me : Exchange( status == Exchange.ACTIVE, in : in !=
null
)
eval( in.xpath("/Record/eid = 101") )
then
jbi.route( "bescocr::tap2" );
end
with the above setup iam getting the following exception "for
service:
null
and interface: null" the exception is as follows, do i need to set
something
else in xbean.xml?
javax.jbi.messaging.MessagingException: Could not find route for
exchange:
InOnly[
id: ID:EC4T16INT165110-4730-1182344415869-7:0
status: Active
role: provider
in: <My Message>
] for service: null and interface: null
at
org.apache.servicemix.jbi.nmr.DefaultBroker.sendExchangePacket(DefaultBroker.java:295)
at
org.apache.servicemix.jbi.security.SecuredBroker.sendExchangePacket(SecuredBroker.java:80)
at
org.apache.servicemix.jbi.container.JBIContainer.sendExchange(JBIContainer.java:793)
at
org.apache.servicemix.jbi.messaging.DeliveryChannelImpl.doSend(DeliveryChannelImpl.java:381)
at
org.apache.servicemix.jbi.messaging.DeliveryChannelImpl.sendSync(DeliveryChannelImpl.java:456)
at
org.apache.servicemix.jbi.messaging.DeliveryChannelImpl.sendSync(DeliveryChannelImpl.java:428)
at
org.apache.servicemix.common.EndpointDeliveryChannel.sendSync(EndpointDeliveryChannel.java:88)
at
org.apache.servicemix.drools.model.JbiHelper.route(JbiHelper.java:109)
at
org.apache.servicemix.drools.Rule_Route_to_tap1_0.consequence(Rule_Route_to_tap1_0.java:11)
at
org.apache.servicemix.drools.Rule_Route_to_tap1_0ConsequenceInvoker.evaluate(Rule_Route_to_tap1_0ConsequenceInvoker.ja
va:19)
at org.drools.common.DefaultAgenda.fireActivation(Unknown
Source)
at org.drools.common.DefaultAgenda.fireNextItem(Unknown
Source)
at
org.drools.common.AbstractWorkingMemory.fireAllRules(Unknown
Source)
at
org.drools.common.AbstractWorkingMemory.fireAllRules(Unknown
Source)
at
org.apache.servicemix.drools.DroolsEndpoint.drools(DroolsEndpoint.java:150)
at
org.apache.servicemix.drools.DroolsEndpoint.process(DroolsEndpoint.java:141)
at
org.apache.servicemix.common.AsyncBaseLifeCycle.doProcess(AsyncBaseLifeCycle.java:489)
at
org.apache.servicemix.common.AsyncBaseLifeCycle.processExchange(AsyncBaseLifeCycle.java:441)
at
org.apache.servicemix.common.BaseLifeCycle.onMessageExchange(BaseLifeCycle.java:46)
at
org.apache.servicemix.jbi.messaging.DeliveryChannelImpl.processInBound(DeliveryChannelImpl.java:593)
at
org.apache.servicemix.jbi.nmr.flow.AbstractFlow.doRouting(AbstractFlow.java:174)
at
org.apache.servicemix.jbi.nmr.flow.seda.SedaFlow.doRouting(SedaFlow.java:176)
at
org.apache.servicemix.jbi.nmr.flow.seda.SedaQueue$1.run(SedaQueue.java:134)
at
edu.emory.mathcs.backport.java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:665)
at
edu.emory.mathcs.backport.java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:690)
at java.lang.Thread.run(Thread.java:595)
ERROR - DroolsComponent - Error processing exchange
InOnly[
id: ID:EC4T16INT165110-4730-1182344415869-3:2
status: Active
role: provider
service: {http://xxx.com/bescocr_031807}myDroolsService
endpoint: endpoint
in: <My Message>
]
org.drools.spi.ConsequenceException:
javax.jbi.messaging.MessagingException:
Could not find route for exchange: InOnly[
id: ID:EC4T16INT165110-4730-1182344415869-7:0
status: Active
role: provider
in: <My Message>
] for service: null and interface: null
at org.drools.common.DefaultAgenda.fireActivation(Unknown
Source)
at org.drools.common.DefaultAgenda.fireNextItem(Unknown
Source)
at
org.drools.common.AbstractWorkingMemory.fireAllRules(Unknown
Source)
at
org.drools.common.AbstractWorkingMemory.fireAllRules(Unknown
Source)
at
org.apache.servicemix.drools.DroolsEndpoint.drools(DroolsEndpoint.java:150)
at
org.apache.servicemix.drools.DroolsEndpoint.process(DroolsEndpoint.java:141)
at
org.apache.servicemix.common.AsyncBaseLifeCycle.doProcess(AsyncBaseLifeCycle.java:489)
at
org.apache.servicemix.common.AsyncBaseLifeCycle.processExchange(AsyncBaseLifeCycle.java:441)
at
org.apache.servicemix.common.BaseLifeCycle.onMessageExchange(BaseLifeCycle.java:46)
at
org.apache.servicemix.jbi.messaging.DeliveryChannelImpl.processInBound(DeliveryChannelImpl.java:593)
at
org.apache.servicemix.jbi.nmr.flow.AbstractFlow.doRouting(AbstractFlow.java:174)
at
org.apache.servicemix.jbi.nmr.flow.seda.SedaFlow.doRouting(SedaFlow.java:176)
at
org.apache.servicemix.jbi.nmr.flow.seda.SedaQueue$1.run(SedaQueue.java:134)
at
edu.emory.mathcs.backport.java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:665)
at
edu.emory.mathcs.backport.java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:690)
at java.lang.Thread.run(Thread.java:595)
Caused by: javax.jbi.messaging.MessagingException: Could not find
route
for
exchange: InOnly[
id: ID:EC4T16INT165110-4730-1182344415869-7:0
status: Active
role: provider
in: <My Message>
] for service: null and interface: null
at
org.apache.servicemix.jbi.nmr.DefaultBroker.sendExchangePacket(DefaultBroker.java:295)
at
org.apache.servicemix.jbi.security.SecuredBroker.sendExchangePacket(SecuredBroker.java:80)
at
org.apache.servicemix.jbi.container.JBIContainer.sendExchange(JBIContainer.java:793)
at
org.apache.servicemix.jbi.messaging.DeliveryChannelImpl.doSend(DeliveryChannelImpl.java:381)
at
org.apache.servicemix.jbi.messaging.DeliveryChannelImpl.sendSync(DeliveryChannelImpl.java:456)
at
org.apache.servicemix.jbi.messaging.DeliveryChannelImpl.sendSync(DeliveryChannelImpl.java:428)
at
org.apache.servicemix.common.EndpointDeliveryChannel.sendSync(EndpointDeliveryChannel.java:88)
at
org.apache.servicemix.drools.model.JbiHelper.route(JbiHelper.java:109)
at
org.apache.servicemix.drools.Rule_Route_to_tap1_0.consequence(Rule_Route_to_tap1_0.java:11)
at
org.apache.servicemix.drools.Rule_Route_to_tap1_0ConsequenceInvoker.evaluate(Rule_Route_to_tap1_0ConsequenceInvoker.ja
va:19)
... 16 more
ERROR - JmsComponent - Error processing exchange
InOnly[
id: ID:EC4T16INT165110-4730-1182344415869-4:0
status: Error
role: consumer
service: {http://xxx.com/bescocr_031807}JmsToPipeTapSvc
endpoint: tap
in: <My Message>
error: org.drools.spi.ConsequenceException:
javax.jbi.messaging.MessagingException: Could not find route for
exchange:
InOnly[
id: ID:EC4T16INT165110-4730-1182344415869-7:0
status: Active
role: provider
in: <My Message>
] for service: null and interface: null
]
java.lang.UnsupportedOperationException: A destination must be
specified.
at
org.apache.activemq.ActiveMQMessageProducer.send(ActiveMQMessageProducer.java:448)
at
org.apache.activemq.pool.PooledProducer.send(PooledProducer.java:75)
at
org.apache.activemq.pool.PooledProducer.send(PooledProducer.java:60)
at
org.apache.servicemix.jms.multiplexing.MultiplexingConsumerProcessor.process(MultiplexingConsumerProcessor.java:125)
at
org.apache.servicemix.common.AsyncBaseLifeCycle.doProcess(AsyncBaseLifeCycle.java:489)
at
org.apache.servicemix.common.AsyncBaseLifeCycle.processExchange(AsyncBaseLifeCycle.java:463)
at
org.apache.servicemix.common.BaseLifeCycle.onMessageExchange(BaseLifeCycle.java:46)
at
org.apache.servicemix.jbi.messaging.DeliveryChannelImpl.processInBound(DeliveryChannelImpl.java:593)
at
org.apache.servicemix.jbi.nmr.flow.AbstractFlow.doRouting(AbstractFlow.java:174)
at
org.apache.servicemix.jbi.nmr.flow.seda.SedaFlow.doRouting(SedaFlow.java:176)
at
org.apache.servicemix.jbi.nmr.flow.seda.SedaQueue$1.run(SedaQueue.java:134)
at
edu.emory.mathcs.backport.java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:665)
at
edu.emory.mathcs.backport.java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:690)
at java.lang.Thread.run(Thread.java:595)
ERROR - JmsComponent - Error setting exchange
status
to
ERROR
javax.jbi.messaging.MessagingException: illegal call to send /
sendSync
at
org.apache.servicemix.jbi.messaging.MessageExchangeImpl.handleSend(MessageExchangeImpl.java:571)
at
org.apache.servicemix.jbi.messaging.DeliveryChannelImpl.doSend(DeliveryChannelImpl.java:370)
at
org.apache.servicemix.jbi.messaging.DeliveryChannelImpl.send(DeliveryChannelImpl.java:417)
at
org.apache.servicemix.common.BaseLifeCycle.onMessageExchange(BaseLifeCycle.java:58)
at
org.apache.servicemix.jbi.messaging.DeliveryChannelImpl.processInBound(DeliveryChannelImpl.java:593)
at
org.apache.servicemix.jbi.nmr.flow.AbstractFlow.doRouting(AbstractFlow.java:174)
at
org.apache.servicemix.jbi.nmr.flow.seda.SedaFlow.doRouting(SedaFlow.java:176)
at
org.apache.servicemix.jbi.nmr.flow.seda.SedaQueue$1.run(SedaQueue.java:134)
at
edu.emory.mathcs.backport.java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:665)
at
edu.emory.mathcs.backport.java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:690)
at java.lang.Thread.run(Thread.java:595)
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