How to set security credentials dynamically in Oracle BPEL

Few months ago I have written a post on invoking WS-Security compliant services, In Oracle BPEL you can either propagate the security credentials coming from the caller process or you can hard-code the tokens in partner link properties.

If you want to invoke a WS-Security compliant web service and want to pass user supplied security tokens, Oracle BPEL does not let you set the security credential dynamically. You need to manually create a UserNameToken and then you need to pass the token as a SOAP header.

Follow the steps given below to change and pass security credentials dynamically:

• Import http://docs.oasis-open.org/wss/2004/01/oasis-200401-wss-wssecurity-secext-1.0.xsd as it is having definitions for WS-Security tokens.
  

• Create 3 variable as given below:

   <variable name="securityContext" element="ns2:Security"/>
   <variable name="userNameToken" element="ns2:UsernameToken"/>
   <variable name="pswd" element="ns2:Password"/>

• Assign incoming security credentials to these variables:

    <assign name="AssignSecurityCredentials">
       <copy>
         <from variable="inputVariable" part="payload" 
           query="/client:SampleRequest/client:pswd"/>
          <to variable="pswd" query="/wsse:Password"/>  
       </copy>
       <copy>
          <from variable="inputVariable" part="payload"
              query="/client:SampleRequest/client:user"/>  
          <to variable="userNameToken"
              query="/wsse:UsernameToken/wsse:Username"/>
     </copy>       
       <bpelx:insertAfter>  
          <bpelx:from variable="pswd" query="/wsse:Password"/>
          <bpelx:to variable="userNameToken"
            query="/wsse:UsernameToken/wsse:Username"/>  
       </bpelx:insertAfter>
      <bpelx:append>  
        <bpelx:from variable="userNameToken" query="/wsse:UsernameToken"/>
      <bpelx:to variable="securityContext" query="/wsse:Security"/>  
      </bpelx:append>
  </assign>

• Pass the security credentials to the calling service like the expression given below:

  <invoke name="InvokeAxisService" partnerLink="PartnerLinkAxisService"
     portType="ns1:sample03PortType" operation="echo"
     inputVariable="Invoke_1_echo_InputVariable"
     outputVariable="Invoke_1_echo_OutputVariable"
     bpelx:inputHeaderVariable="securityContext"/>

• Complete you BPEL process by adding required functionalities then deploy and test it.