change original payload with wso2 esb - xpath

I saved the following structure on a property du wso2:
<ELEMENT>
<ELEMENT_2>
<ELEMENT_3>
<ID> 173993 </ID>
</ELEMENT_3>
</ELEMENT_2>
</ELEMENT>
I want to bring TEMP only to children:
<TEMP>
<NAME>GEORGE</NAME>
<COGNOME>MENDEZ</COGNOME>
<BUSINESSNAME/>
<CHANNEL>X091</CHANNEL>
</TEMP>
I want to add them right after the <ELEMENT_2>
FINAL RESULTS:
<ELEMENT>
<ELEMENT_2>
<NAME>GEORGE</NAME>
<COGNOME>MENDEZ</COGNOME>
<BUSINESSNAME/>
<CHANNEL>X091</CHANNEL>
<ELEMENT_3>
<ID> 173993 </ID>
</ELEMENT_3>
</ELEMENT_2>
</ELEMENT>
Thanks

Can you check if your requirement is achieved with the following proxy configuration.
<?xml version="1.0" encoding="UTF-8"?>
<proxy xmlns="http://ws.apache.org/ns/synapse"
name="enrichProxy"
startOnLoad="true"
statistics="disable"
trace="disable"
transports="http,https">
<target>
<inSequence>
<property name="initial_payload" scope="default">
<ELEMENT xmlns="">
<ELEMENT_2>
<ELEMENT_3>
<ID>173993</ID>
</ELEMENT_3>
</ELEMENT_2>
</ELEMENT>
</property>
<call>
<endpoint>
<http uri-template="http://run.mocky.io/v3/7c578a1d-5427-4325-9f00-4ad7bb80dd04"/>
</endpoint>
</call>
<log level="custom">
<property expression="$body//TEMP/*" name="******"/>
</log>
<respond/>
</inSequence>
</target>
<description/>
</proxy>
Remove external tag with xpath wso2
update
Here I have enriched the second property (..) back to the body using a enrich mediator.
<?xml version="1.0" encoding="UTF-8"?>
<proxy xmlns="http://ws.apache.org/ns/synapse"
name="enrichProxy"
startOnLoad="true"
statistics="disable"
trace="disable"
transports="http,https">
<target>
<inSequence>
<property name="initial_payload" scope="default">
<ELEMENT xmlns="">
<ELEMENT_2>
<ELEMENT_3>
<ID>173993</ID>
</ELEMENT_3>
</ELEMENT_2>
</ELEMENT>
</property>
<property name="second_payload" scope="default">
<TEMP xmlns="">
<NAME>GEORGE</NAME>
<COGNOME>MENDEZ</COGNOME>
<BUSINESSNAME/>
<CHANNEL>X091</CHANNEL>
</TEMP>
</property>
<enrich>
<source clone="true" property="second_payload" type="property"/>
<target type="body"/>
</enrich>
<enrich>
<source clone="true" xpath="$body//TEMP/*"/>
<target action="child" xpath="$ctx:initial_payload//ELEMENT_2"/>
</enrich>
<log level="custom">
<property expression="$ctx:initial_payload" name="******"/>
</log>
<respond/>
</inSequence>
</target>
<description/>
</proxy>

Related

WSO2 missing value when logging property

I'm currently stuck with the following.
Goal 1: get the URL in the log
Goal 2 use it in the send mediator
Could you guys help me with both?
XML file:
<soap:Envelope xmlns:soap="http://schemas.xmlsoap.org/soap/envelope/">
<soap:Header>
<meta:MetaDataType xmlns:meta="http://teswt.nl/xmlschemas/meeeeta/0.1">
<meta:Version>6.3</meta:Version>
<meta:FixLevel>0.0</meta:FixLevel>
<meta:Endpoint>http://555.555.555.55:8088/sal</meta:Endpoint>
</meta:MetaDataType>
</soap:Header>
The code in the proxy insequence so far:
<property xmlns:meta="http://teswt.nl/xmlschemas/meeeeta/0.1" expression="$header//meta:MetaDataType/meta:Endpoint" name="URL" scope="default" type="STRING"/>
<log level="custom">
<property xmlns:meta="http://teswt.nl/xmlschemas/meeeeta/0.1" expression="get-property('URL')" name="URL"/>
</log>
<send>
<endpoint>
<address format="soap11" uri="http://555.555.555.55:8088/sal"/>
</endpoint>
</send>
It prints the following:
INFO {org.apache.synapse.mediators.builtin.LogMediator} - URL =
I have tested the given request and the XPath expression in EI 6.6.0 server and I could observe that the XPath is working as expected and logging the URL.
Request
<soap:Envelope xmlns:soap="http://www.w3.org/2003/05/soap-envelope">
<soap:Header>
<meta:MetaDataType xmlns:meta="http://teswt.nl/xmlschemas/meeeeta/0.1">
<meta:Version>6.3</meta:Version>
<meta:FixLevel>0.0</meta:FixLevel>
<meta:Endpoint>http://555.555.555.55:8088/sal</meta:Endpoint>
</meta:MetaDataType>
</soap:Header>
<soap:Body/>
</soap:Envelope>
Proxy service
<?xml version="1.0" encoding="UTF-8"?>
<proxy xmlns="http://ws.apache.org/ns/synapse"
name="test"
startOnLoad="true"
statistics="disable"
trace="disable"
transports="http,https">
<target>
<inSequence>
<property xmlns:meta="http://teswt.nl/xmlschemas/meeeeta/0.1"
expression="$header//meta:MetaDataType/meta:Endpoint"
name="URL"
scope="default"
type="STRING"/>
<log level="custom">
<property xmlns:meta="http://teswt.nl/xmlschemas/meeeeta/0.1"
expression="get-property('URL')"
name="URL"/>
</log>
</inSequence>
</target>
<description/>
</proxy>
Could you please enable the wire logs and check if the desired request is received by the service. You can also add a <log level="full"/> before extracting the URL to check the payload received.
In addition to that, what is the EI version that you are using

WSO2 get value from service response

I have this rest api in WSO2 ESB:
<api xmlns="http://ws.apache.org/ns/synapse" name="RestApi" context="/rest">
<resource methods="POST GET" uri-template="/view/{symbol}" protocol="http">
<inSequence>
<log level="full"/>
<payloadFactory media-type="xml">
<format>
<soapenv:Envelope xmlns:soapenv="http://schemas.xmlsoap.org/soap/envelope/" xmlns:web="http://www.w3schools.com/webservices/">
<soapenv:Header/>
<soapenv:Body>
<web:FahrenheitToCelsius>
<web:Fahrenheit>$1</web:Fahrenheit>
</web:FahrenheitToCelsius>
</soapenv:Body>
</soapenv:Envelope>
</format>
<args>
<arg evaluator="xml" expression="get-property('uri.var.symbol')"/>
</args>
</payloadFactory>
<property name="DISABLE_CHUNKING" value="true" scope="axis2"/>
<send>
<endpoint>
<address uri="http://www.w3schools.com/webservices/tempconvert.asmx" format="soap11"/>
</endpoint>
</send>
</inSequence>
<outSequence>
<property name="messageType" value="application/json" scope="axis2"/>
<property name="msgbody" expression="$body" scope="default" type="STRING"/>
<log level="custom">
<property name="To" expression="get-property('msgbody')"/>
</log>
<payloadFactory media-type="json">
<format>{"Status":"evgeni"}</format>
<args/>
</payloadFactory>
<send/>
</outSequence>
<faultSequence/>
</resource>
</api>
The important part is the <outSequence></outSequence>
The property <property name="msgbody" expression="$body" scope="default" type="STRING"/> returns the response from the soap service. It looks like this:
<soap:Body xmlns:soap="http://schemas.xmlsoap.org/soap/envelope/">
<FahrenheitToCelsiusResponse xmlns="http://www.w3schools.com/webservices/">
<FahrenheitToCelsiusResult>4.44444444444444</FahrenheitToCelsiusResult>
</FahrenheitToCelsiusResponse>
</soap:Body>
I want to get just the value of FahrenheitToCelsiusResult (4.44444444444444). How can I do that?
I tried:
<property xmlns:soap="http://schemas.xmlsoap.org/soap/envelope/"
name="msgbody"
expression="$body/soap:Body/FahrenheitToCelsiusResponse/FahrenheitToCelsiusResult"
scope="default" type="STRING"/>
but it returns an empty string.
You have to provide the namespace in the xpath expression as in below
<property expression="//ns:FahrenheitToCelsiusResult"
name="msgbody" scope="default" type="STRING"
xmlns:ns="http://www.w3schools.com/webservices/"/>
For more information please refer to this link
Thanks.
<property name="tempValue" expression="//*[local-name()='FahrenheitToCelsiusResult']" scope="default" type="STRING"/>

How to break/stop sequence if exception occurs in mediator using WSO2 ESB

i am trying to implement logic that if during execution of sequence any error occurs, like e.g JMS endpoint is invalid, So sequence should drop here and log the message.
The actual mediation is like below:
Validate-->Clone-->Log Clone mediation snapshot attached.
My Service Code is:
<?xml version="1.0" encoding="UTF-8"?>
<proxy xmlns="http://ws.apache.org/ns/synapse"
name="AdapterService"
transports="jms"
statistics="disable"
trace="disable"
startOnLoad="true">
<target>
<inSequence>
<log level="full" separator="..... XML Received..."/>
<validate source="//DOCUMENT03">
<schema key="conf:/DOCUMENT03_CUSTOM.xsd"/>
<on-fail>
<makefault version="pox">
<reason value="Invalid XML"/>
<detail>Error while validating XML at Adapter Service.</detail>
</makefault>
<log level="full" category="ERROR" separator="... XML Error..."/>
<drop/>
</on-fail>
</validate>
<clone>
<target>
<sequence>
<script language="js">mc.getEnvelope().getBody().getFirstElement().getFirstElement().getFirstElement().detach();</script>
<log level="full"/>
<property name="OUT_ONLY" value="true" scope="default" type="STRING"/>
<send>
<endpoint>
<address uri=**"jms:/BookingMessage?transport.jms.ConnectionFactoryJNDIName=QueueConnectionFactory&java.naming.factory.initial=org.apache.activemq.jndi.ActiveMQInitialContextFactory&java.naming.provider.url=tcp://1929.168.1.113:61616&transport.jms.DestinationType=queue"**
format="pox">
<timeout>
<duration>10</duration>
<responseAction>fault</responseAction>
</timeout>
<suspendOnFailure>
<errorCodes>101507,101505,101503</errorCodes>
<progressionFactor>1.0</progressionFactor>
<maximumDuration>10</maximumDuration>
</suspendOnFailure>
<markForSuspension>
<errorCodes>101508,101504</errorCodes>
<retriesBeforeSuspension>5</retriesBeforeSuspension>
<retryDelay>10</retryDelay>
</markForSuspension>
</address>
</endpoint>
</send>
<payloadFactory media-type="xml">
<format>
<soapenv:Envelope xmlns:soapenv="http://schemas.xmlsoap.org/soap/envelope/">
<soapenv:Body>$1</soapenv:Body>
</soapenv:Envelope>
</format>
<args>
<arg xmlns:tns="http://com.sanomalearning/cdm/finance/generalledger/v1"
evaluator="xml"
expression="//DOCUMENT03/CMMHeader"/>
</args>
</payloadFactory>
<log level="full"/>
<property name="OUT_ONLY" value="true" scope="default" type="STRING"/>
<send>
<endpoint key="conf:/CMMHeaderQueueUrl"/>
</send>
<log level="full" separator="Message Sent to Queue"/>
</sequence>
</target>
</clone>
</inSequence>
<outSequence>
<send/>
</outSequence>
<faultSequence>
<log level="custom" separator=",">
<property name="text" value="***FAult Handler***"/>
</log>
<property name="SET_ROLLBACK_ONLY" value="true" scope="axis2"/>
<drop/>
<log level="custom">
<property name="text" value="An unexpected error occured"/>
<property name="message" expression="get-property('ERROR_MESSAGE')"/>
<property name="code" expression="get-property('ERROR_CODE')"/>
<property name="detail" expression="get-property('ERROR_DETAIL')"/>
<property name="exception" expression="get-property('ERROR_EXCEPTION')"/>
</log>
<drop/>
</faultSequence>
</target>
<parameter name="transport.jms.ContentType">
<rules>
<jmsProperty>contentType</jmsProperty>
<default>application/xml</default>
</rules>
</parameter>
<parameter name="transport.jms.ConnectionFactory">myQueueConnectionFactory</parameter>
<parameter name="transport.jms.DestinationType">queue</parameter>
<parameter name="transport.jms.Destination">AdapterService.01.Request.Queue</parameter>
<description/>
</proxy>
Now when i execute this service after receiving request from queue, it is not sending message to invalid queue but sending message to second Url. Now i want if message is not sent to invalid endpoint then sequence should dropped. The invalid url is Bold.
AFAIK you can not define two send mediators under the same target in one clone mediator instead you have to define those inside two different targets.
Also would be helpful if you can elaborate your requirement a bit more. For a solution with regard to JMS endpoint is invalid issue what you can do is define a drop mediator inside the fault sequence.

WSO2- Error Using Clone Mediator to send message to an endpoint

I am working on WSO2 proxy service that invokes a lot of other DSS services. My requirement is to send the response of one of the DSS service on to a jms queue and at the same time continue with the exsiting flow in the proxy service i.e. continue invoking and processing the other DSS services.
I need to get the response of Simple Product Service (sequence key -if4_simpleProduct) and send it back on to the queue, but after that continue with logic that is placed in the proxy service and sequence. I tried using CLONE Mediator for the same. But my prxy service flow stops after coming in to the CLONE Meditaor flow. Below is the snippet for proxy service and sequence.
<?xml version="1.0" encoding="UTF-8"?>
<proxy xmlns="http://ws.apache.org/ns/synapse" name="SPE_Payload"
transports="jms" startOnLoad="true" trace="enable">
<description />
<target>
<inSequence>
<transaction action="new" />
<xslt key="StepToCommon" />
<log level="full" />
<enrich>
<source type="body" clone="true" />
<target type="property" property="MSG_PAYLOAD" />
</enrich>
<sequence key="if4_simpleProduct" />
<filter xpath="boolean (//product/simpleProduct/altPrdCodes/pn_apc_id/text())">
<enrich>
<source clone="true" xpath="//product/simpleProduct/altPrdCodes" />
<target type="property" property="ALT_PRDS" />
</enrich>
<sequence key="if4_alternateProducts" />
</filter>
....
.....
<transaction action="commit" />
</inSequence>
</target>
<parameter name="transport.jms.ContentType">application/xml</parameter>
<parameter name="transport.jms.Destination">test</parameter>
</proxy>
Given below is the code of for sequence while calling Simple Product Service
<sequence xmlns="http://ws.apache.org/ns/synapse" name="if4_simpleProduct"
onError="myErrorHandlerSeq">
<payloadFactory>
<format>
<p:O_SimpleProduct xmlns:p="http://ws.wso2.org/dataservice">
<p:PC_STEP_SKU_ID>$1</p:PC_STEP_SKU_ID>
</p:O_SimpleProduct>
</format>
<args>
<arg xmlns:m="http://wso2.org/services/product" evaluator="xml"
expression="//product/simpleProduct/step_id/text()" />
</args>
</payloadFactory>
<header name="Action" value="urn:O_SimpleProduct" />
<callout serviceURL="local://localhost/services/productEnrichment"
action="urn:O_SimpleProduct" useServerConfig="true">
<source xmlns:ns="http://org.apache.synapse/xsd" xpath="$body/child::*[fn:position()=1]" />
<target xmlns:ns="http://org.apache.synapse/xsd" xpath="$body/child::*[fn:position()=1]" />
</callout>
<clone sequential="false">
<property name="RESPONSE" value="true" />
<header name="To" action="remove" />
<target>
<endpoint>
<address
uri="jms:/step.IF04Output?transport.jms.ConnectionFactoryJNDIName=QueueConnectionFactory&java.naming.factory.initial=org.apache.activemq.jndi.ActiveMQInitialContextFactory&java.naming.provider.url=tcp://localhost:61616&transport.jms.DestinationType=queue" />
</endpoint>
</target>
<target>
<filter xmlns:ns="http://org.apache.synapse/xsd" xmlns:ds="http://wso2.org/services/product"
source="//ds:result/ds:set/ds:PC_STATUS/text()" regex="0">
<then>
<log level="custom">
<property name="STATUS"
value="************DONE INSERTING SIMPLE ATTRIBUTES***************" />
</log>
</then>
<else>
<log level="full" category="ERROR">
<property name="STATUS"
value="************ERROR OCCURED WHILE INSERTING SIMPLE ATTRIBUTES. ROLLBACKING THE TRANSACTION***************" />
<property name="PC_RP_ID" expression="get-property('GEN_RP_ID')" />
</log>
<transaction action="rollback" />
<drop />
</else>
</filter>
<property xmlns:ds="http://wso2.org/services/product" name="GEN_RP_ID"
expression="//ds:result/ds:set/ds:PC_RP_ID/text()" />
<enrich>
<source type="property" clone="true" property="MSG_PAYLOAD" />
<target type="body" />
</enrich>
</target>
</clone>
</sequence>
I am struggling with the issue since last two days. tried sing Clone meditior in several places. but it does not work. Could you please provide your suggestions soon as I have a demo to go tomorrow and I need to sort it out :(
Cheers,
Aanchal
I think this is the part you are struggling;
<callout serviceURL="local://localhost/services/productEnrichment"
action="urn:O_SimpleProduct" useServerConfig="true">
<source xmlns:ns="http://org.apache.synapse/xsd" xpath="$body/child::*[fn:position()=1]" />
<target xmlns:ns="http://org.apache.synapse/xsd" xpath="$body/child::*[fn:position()=1]" />
</callout>
<clone sequential="false">
<property name="RESPONSE" value="true" />
<header name="To" action="remove" />
<target>
<endpoint>
<address
uri="jms:/step.IF04Output?transport.jms.ConnectionFactoryJNDIName=QueueConnectionFactory&java.naming.factory.initial=org.apache.activemq.jndi.ActiveMQInitialContextFactory&java.naming.provider.url=tcp://localhost:61616&transport.jms.DestinationType=queue" />
</endpoint>
</target>
Since your requirement is get response form one of the DS service and send that to queue..I think it fails because you are removing "To" header..Use callout mediator inside clone mediator's one of the "Target" configuration after sending to JMS queue drop the message there..In the other target, define your rest of the logic..

How to do addition of two numbers in wso2esb

I am using wso2esb4.7.0
i wish to do addition of 2 numbers using wso2esb for that i have written my proxy but its not working
my proxy is like this
<?xml version="1.0" encoding="UTF-8"?>
<proxy xmlns="http://ws.apache.org/ns/synapse"
name="Addition"
transports="https,http"
statistics="disable"
trace="disable"
startOnLoad="true">
<target>
<inSequence>
<property name="Value1"
expression="//Value1/text()"
scope="default"
type="STRING"/>
<property name="Value2"
expression="//Value2/text()"
scope="default"
type="STRING"/>
<property name="Result"
expression="fn:sum(get-property('Value1'),get-property('Value2'))"
scope="default"
type="STRING"/>
<log>
<property name="RESULT" expression="get-property('Result')"/>
</log>
</inSequence>
<outSequence/>
</target>
<description/>
</proxy>
i logged it the result is given errors :
ERROR - SynapseXPath Evaluation of the XPath expression fn:sum(get-property('Value1'),get-property('Value2')) resulted in an error
org.jaxen.FunctionCallException: sum() requires one argument.
at org.jaxen.function.SumFunction.call(SumFunction.java:99)
at org.jaxen.expr.DefaultFunctionCallExpr.evaluate(DefaultFunctionCallExpr.java:177)
at org.jaxen.expr.DefaultXPathExpr.asList(DefaultXPathExpr.java:102)
at org.jaxen.BaseXPath.selectNodesForContext(BaseXPath.java:674)
at org.jaxen.BaseXPath.selectNodes(BaseXPath.java:213)
at org.jaxen.BaseXPath.evaluate(BaseXPath.java:172)
and I tried with this also
<property name="Result"
expression="fn:sum(//Value1/text(),//Value2/text()))"
scope="default"
type="STRING"/>
Even this is also giving errors how would i reach to addition goal and my curl command like this
curl -v -H "Accept: application/json" -H "Content-Type:application/json" -H "ModifiedOn:0" -H "userid:-1899999899" -H "username:vikash|214057357158656" -H "password:gbadmin" -d '{"Value1":"2","Value2":"45"}' http://youtility2-desktop:8282/services/Addition
You can use the script mediator to achieve this. First you can set the two values as you have done above. Then in the script mediator you can add them and set to the required property.
Complete proxy with this approach;
<?xml version="1.0" encoding="UTF-8"?>
<proxy xmlns="http://ws.apache.org/ns/synapse"
name="Addition"
transports="https,http"
statistics="disable"
trace="disable"
startOnLoad="true">
<target>
<inSequence>
<property name="Value1"
expression="//Value1/text()"
scope="default"
type="INTEGER"/>
<property name="Value2"
expression="//Value2/text()"
scope="default"
type="INTEGER"/>
<script language="js">
var value1 = mc.getProperty("Value1");
var value2 = mc.getProperty("Value2");
var result = value1 + value2;
mc.setProperty("Result", result);
</script>
<log>
<property name="RESULT" expression="get-property('Result')"/>
</log>
</inSequence>
<outSequence/>
</target>
<description/>
</proxy>
<?xml version="1.0" encoding="UTF-8"?>
<proxy xmlns="http://ws.apache.org/ns/synapse"
name="Addition"
transports="https,http"
statistics="disable"
trace="disable"
startOnLoad="true">
<target>
<inSequence>
<property name="Value1"
expression="//Value1/text()"
scope="default"
type="INTEGER"/>
<property name="Value2"
expression="//Value2/text()"
scope="default"
type="INTEGER"/>
<script language="js">
var value1 = parseInt(mc.getProperty("Value1"));
var value2 = parseInt(mc.getProperty("Value2"));
var result = value1 + value2;
mc.setProperty("Result", result);
</script>
<log>
<property name="RESULT" expression="get-property('Result')"/>
</log>
</inSequence>
<outSequence/>
</target>
<description/>
</proxy>

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