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author's profile photo Sanjeev Shekhar Singh
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Sanjeev Shekhar Singh

Sender Rest adapter Get operation processing

Posted on Jun 28, 2016 at 06:12 AM 771 Views

Hi All,

I have a scenario where I need to host a REST service using GET operation and there are 2 optional parameters (let's call them a and b).

Since this is GET operation, I am not expecting any HTTP payload in body. I have configured the sender rest channel to convert data to XML and add wrapper of Message type name (refer screenshots). I have done request mapping to hard code a few parameters.

However, if I send a GET message to the service using a rest client with no payload, I receive an error (MP: exception caught with cause com.sap.aii.adapter.xi.routing.RoutingException: Unable to parse XML message payload to extract operation for receiver determinationorg.xml.sax.SAXParseException: Premature end of file.). PI doesn't seem to like empty HTTP body even in case of GET operation.

Also noticed that:

  1. REST adapter does not add the wrapper element to the request message, if there is no content in body. I would have though it would create an empty root level tag with message type name.
  2. If I change the option to POST and pass {}, as HTTP body, my interface works fine.

Am I doing something wrong here?

Regards,

Sanjeev.

Message was edited by: Sanjeev Shekhar Singh

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    author's profile photo Bhavesh Kantilal
    Bhavesh Kantilal
    Posted on Jun 28, 2016 at 07:11 AM
    3

    I dont have a REST adapter on my landscape and hence while not a direct answer, Why not use the plain HTTP_AAE Adapter with the GET method?

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  • author's profile photo Navdeep Singh
    Navdeep Singh
    Posted on Jun 28, 2016 at 07:36 AM
    1

    Hi Sanjeev,

    you need to define the parameters in REST resources in the sender channel

    in the runtime the parameters will be available in the dynamic configuration and you need to extract these in your mapping

    you don't have to send any payload, the parameters will be supplied in the url


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