I want to set a key/value pair using camel-redis. I try:
spring-redis://localhost:6379?command=SET&CamelRedis.key=testkey&CamelRedis.value=100
but no joy. I get the error:
There are 2 parameters that couldn't be set on the endpoint. Check the uri if the parameters are spelt correctly and that they are properties of the endpoint. Unknown parameters=[{key=testkey, value=100}]
Although there are plenty of examples about how to subscribe etc. I do not find a single example on how to set a key/value pair. How would I do that?
CamelRedis.Key and CamelRedis.Value (beware they are case sensitive) are message headers not URI parameters
<route>
<from uri="direct:intput"/>
<setHeader headerName="CamelRedis.Key"><constant>testkey</constant></setHeader>
<setHeader headerName="CamelRedis.Value"><constant>100</constant></setHeader>
<to uri="spring-redis://localhost:6379?command=SET"/>
</route>
Related
I'm calling an HTTP endpoint and getting the response in
a sequence. Response is getting logged in the seq_sla_resp.
<send receive="seq_sla_resp">
<endpoint key="gov:EDI/SLA/endpoints/edi_sla_payment_ep.xml" />
</send>
Inside this response sequence I'm unable to get a property which I set previously during the call (in the main proxy).
<property expression="//m1:sla_row/m1:tran_id/text()"
name="tran_id" scope="default" type="STRING"
xmlns:m1="http://ws.wso2.org/dataservice" />
When I try to log the property in the seq_sla_resp it ends up in the below error message
<log>
<property expression="$tran_id" name="tran_id" xmlns:m0="http://ws.wso2.org/dataservice"/>
</log>
Following is the error.
SynapseXPath Evaluation of the XPath expression $tran_id resulted in an error
org.jaxen.UnresolvableException: Variable tran_id
How can i get the context value in the response sequence.
In the documentaion it says default scope has the largest life span for the property.
Any help is very much appreciated.
I think you would find that your expression would also not work in the inSequence. You should either use expression="$ctx:tran_id" or expression="get-property('tran_id')"
Please note that WSO2 recommends using $ctx instead of the get-property if the scope is default. The get-property methods search in the registry if the value is not available in the message context. Therefore, it affects the performance.
In your case , you can use
<property expression="$ctx:tran_id" name="tran_id" scope="default" xmlns:m0="http://ws.wso2.org/dataservice"/>
Thanks
Kranthi
Having a requirement to test a object store whether it contains a key or not in a choice router
<objectstore:config name="storeDownload" doc:name="ObjectStore" persistent="false" partition="test"/>
<choice>
<when expression="#[app.registry.storeDownload.contains('#[flowVars.startKey]').equals('false')]">
Getting an error
1. Expression Evaluator "registry" with expression "ON" returned null but a value was required. (org.mule.api.expression.ExpressionRuntimeException)
org.mule.expression.RegistryExpressionEvaluator:101 (http://www.mulesoft.org/docs/site/current3/apidocs/org/mule/api/expression/ExpressionRuntimeException.html)
2. Failed to invoke store. Message payload is of type: byte[] (org.mule.api.MessagingException)
The main issue is that you are embedding MEL into MEL which can't work. Also the boolean-as-string comparison is dodgy.
Replace this:
#[app.registry.storeDownload.contains('#[flowVars.startKey]').equals('false')]
with that:
#[!(app.registry.storeDownload.contains(flowVars.startKey))]
My use case was a bit different to Nazar's I needed to monitor a long running process which can take up to four hours.
In the first flow I generate a key value with a time stamp in it as the payload and then use it to set the ProcessState to the static value 'Started' in an ObjectStore as shown below. After which I fire a Quartz Outbound Endpoint with a four hour delay.
<objectstore:store config-ref="MonitoredProcess" value-ref="Started" key="#[payload]" doc:name="ObjectStore"/>
<quartz:outbound-endpoint jobName="ProcessMonitor" responseTimeout="10000" doc:name="Quartz"
repeatInterval="0" repeatCount="0" startDelay="${process.monitor.event.start.delay}">
<quartz:scheduled-dispatch-job>
<quartz:job-endpoint address="vm://processMonitorQueue"/>
</quartz:scheduled-dispatch-job>
</quartz:outbound-endpoint>
And I got the same exception.
After scratching my head and lots of searches the name of the variable 'value-ref' in combination with David's answer above finally revealed my problem namely the MEL is always invoked for this ref field.
As soon as I changed the field to an expression #['Started'] that MEL could evaluate my problem went away.
<objectstore:store config-ref="MonitoredProcess" value-ref="#['Started']" key="#[payload]" doc:name="ObjectStore"/>
For completeness I've included the code that retrieves the ProcessState from the ObjectStore. Note the defaultValue-ref also needs to use MEL
<vm:inbound-endpoint exchange-pattern="one-way" path="processMonitorQueue" doc:name="VM" />
<objectstore:retrieve config-ref="MonitoredProcess" defaultValue-ref="#['DoesNotExist']" key="#[payload]" targetProperty="processState" doc:name="ObjectStore"/>
I face a complex case.
What I'm doing is as following steps:
1) <from uri="jetty:http://0.0.0.0:30100/jetty/test"/>
2) <to uri="hazelcast-client:master-test-series" />
3) <to uri="bean:modelSeriesWrapperTest" />
4)
<split parallelProcessing="true" streaming="true">
<simple>${body}</simple> <to uri="direct:dw.model.test"/>
</split>
5) From another route
<from uri="direct:dw.model.test"/>
<aggregate strategyRef="myAggregatorStrategy"
completionTimeout="1000">
<correlationExpression>
<constant>true</constant>
</correlationExpression>
<marshal ref="modelSeriesVariantColourGson" />
<camel:to uri="file:src/data/catask/output?fileName=output.xml"/>
</aggregate>
The problem is that the jetty response is empty. I use TCP trace to track the request and response, the Content-Length is 0. But the output.xml file has correct JSON format content.
Even I cross the <camel:to uri="file:src/data/catask/output?fileName=output.xml"/>. The jetty response is still empty.
I try the InOut pattern, it doesn't work as well.
It seems jetty return directly, not waiting split done. I try to set In and Out body, it doesn't work either. I Google every case that I can image. There is no helpful case.
Could you please help me? Thank you very much.
If you want the jetty response to include whatever information from your aggregator, then you must use the splitter only approach as documented at:
http://camel.apache.org/composed-message-processor.html
The splitter has built-in aggregation, and that ensures when the splitter is done, it aggregates also, and then you can use that as the jetty response.
When you use <aggregate> then it becomes a separate exchange. To understand this more then read more about the aggregate eip, and other SO, and in various Camel books etc.
I needed to split a message into 3 different payloads and transform and send to 3 routers. So the payload initially will have a header a body or detail and a footer. These 3 different payloads need to be extracted and send to 3 different routers. What would be the most efficient way to do it.
It depends on your body/payload type. If your payload is XML, you can easily split it using xpath and route it using content based routing similar to:
<splitter expression="#[xpath('//nodes/node)']" />
<choice>
<when expression="#[xpath('//node/id').text ='myid']">
<!-- Route somewhere -->
</when>
<otherwise>
<!-- Route somewhere else -->
</otherwise>
</choice>
The expression splitter above can take any MEL expression to split up your payload. There are many other splitters, for example if your payload is already a java Collection, you can simply use the collection-splitter.
Other splitter info can be found here: http://www.mulesoft.org/documentation-3.2/display/32X/Message+Splitting+and+Aggregation
Also there are other routers that can help you with fork and join patterns if you need to process messages asynchronously as well. Here's a good post on that: http://java.dzone.com/articles/aggregation-mule-%E2%80%93-%E2%80%9Cfork-and
I am trying to find a way to pass in "destAddr=" in smpp route below, a value that comes from the above sql query in order to import the senders number in the sms destination address but after much search, I can't find a way. How can I save the value I need from the query and then use it dynamically in the smpp option? Any suggestions would be much appreciated.
<from uri="sql:{{sql.selectRunRecList}}" />
<to uri="bean:smppBean?method=smsConstruct" />
<to uri="sql:{{sql.markSms}}"/>
<to uri="bean:smppBean?method=smsPrintText" />
<to uri="file:C:/workspace/SMPP/outbox" />
<to uri="smpp://smppclient#localhost:2775?password=password&destAddr= " />
See this FAQ how to use dynamic values when sending to an endpoint in Camel
http://camel.apache.org/how-do-i-use-dynamic-uri-in-to.html