Synapse/WSO2: Modifying a message in proxy service with iterate mediator -

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here's problem i'm trying solve:

  1. receive message
  2. enrich message calling service obtain information (the other service happens wso2 data service, using mock proxy works same); see here info on enrich pattern
  3. send message on way

the input message looks this:

<purchaseorder xmlns="http://example.com/samples">   <header>     <vendordata>       <vendornumber>123456</vendornumber>     </vendordata>   </header>   <body>     <lineitem>       <itemnumber>111222333</itemnumber>     </lineitem>     <lineitem>       <itemnumber>333224444</itemnumber>     </lineitem>     <lineitem>       <itemnumber>123456789</itemnumber>     </lineitem>   </body> </purchaseorder>

... , output message should this:

<purchaseorder xmlns="http://example.com/samples">   <header>     <vendordata>       <vendornumber>123456</vendornumber>     </vendordata>     <vendorterms>       <discount>         <description>15% net 10</description>         <discountdays>10</discountdays>       </discount>       <days>30</days>       <termsid>001</termsid>     </vendorterms>   </header>   <body>     <lineitem>       <itemnumber>111222333</itemnumber>       <sku>abc123pdq789</sku>       <cost>9.99</cost>       <description>widget, small</description>     </lineitem>     <lineitem>       <itemnumber>333224444</itemnumber>       <sku>0000143214</sku>       <cost>99.99</cost>       <description>big ticket item</description>     </lineitem>     <lineitem>       <itemnumber>123456789</itemnumber>       <sku>01121245245</sku>       <cost>15.99</cost>       <description>widget bundle, large (10)</description>     </lineitem>   </body> </purchaseorder>

... additional information obtained calling other services.

below proxy service definition trying, , enrich mediator outside of iterate mediator works expected. it's enrich mediator inside iterate mediator not working expected. under impression had use aggregate mediator tie together.

i've looked through wso2 , synapse examples such problem, , assume using iterate mediator send mediator call other services, not same i'm doing here.

proxy service definition:

<proxy xmlns="http://ws.apache.org/ns/synapse" name="dss_mockpoc" transports="https,http" statistics="enable" trace="enable" startonload="true">    <target>       <insequence>          <property xmlns:ex="http://example.com/samples" name="vendornumber" expression="//ex:purchaseorder/ex:header/ex:vendordata/ex:vendornumber" scope="default" type="string"/>          <callout serviceurl="local:///services/mock_termslookup/" action="urn:mediate">             <source type="envelope"/>             <target key="termsresponse"/>          </callout>          <enrich>             <source clone="true" xpath="synapse:get-property('termsresponse')"/>             <target xmlns:ex="http://example.com/samples" action="sibling" xpath="//ex:purchaseorder/ex:header/ex:vendordata"/>          </enrich>          <iterate xmlns:ex="http://example.com/samples" continueparent="true" id="lineitemiterator" preservepayload="true" attachpath="//ex:purchaseorder/ex:body" expression="//ex:purchaseorder/ex:body/ex:lineitem" sequential="true">             <target>                <sequence>                   <property name="itemlookuprequest" expression="$body" scope="default" type="om"/>                   <callout serviceurl="local:///services/mock_itemlookup/" action="urn:mediate">                      <source key="itemlookuprequest"/>                      <target key="itemlookupresponse"/>                   </callout>                   <enrich>                      <source type="property" clone="true" property="itemlookupresponse"/>                      <target xpath="//ex:lineitem"/>                   </enrich>                </sequence>             </target>          </iterate>          <aggregate id="lineitemiterator">             <correlateon xmlns:ex="http://example.com/samples" expression="//ex:purchaseorder/ex:header"/>             <completecondition>                <messagecount min="-1" max="-1"/>             </completecondition>             <oncomplete xmlns:ex="http://example.com/samples" expression="//ex:purchaseorder/ex:body/ex:lineitem">                <log level="full"/>             </oncomplete>          </aggregate>          <property name="response" value="true" scope="default" type="string"/>          <header name="to" action="remove"/>          <send/>       </insequence>    </target>    <description></description> </proxy>

finally, when calling service. through logging, can see iterate mediator sending , receiving correct information; results not propagated return message.

<purchaseorder xmlns="http://example.com/samples">    <header>       <vendordata>          <vendornumber>123456</vendornumber>       </vendordata>       <vendorterms>          <discount>             <description>15 % net 10</description>             <discountdays>10</discountdays>          </discount>          <days>30</days>          <termsid>001</termsid>       </vendorterms>    </header>    <body>       <lineitem>          <itemnumber>111222333</itemnumber>       </lineitem>       <lineitem>          <itemnumber>333224444</itemnumber>       </lineitem>       <lineitem>          <itemnumber>123456789</itemnumber>       </lineitem>    </body> </purchaseorder>


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