Question Re: SAP CPI : iFlow - Exception process block - access HTTP status code in Technology Q&A

SAP CPI : iFlow - Exception process block - access HTTP status code

KeshavDesai — Mon, 03 Feb 2020 14:00:46 GMT

Hello experts,

${header.CamelHttpResponseCode} : Is this the correct header parameter to get the HTTP status code when an exception occurs?

I am unable to access this value in exception sub-process block in the iFlow.

Regards

Re: SAP CPI : iFlow - Exception process block - access HTTP status code

former_member608139 — Mon, 03 Feb 2020 14:07:31 GMT

Yes this is the correctly one, but why you are cannot access it? could you provide a print about this configuration inside the I-Flow?

Re: SAP CPI : iFlow - Exception process block - access HTTP status code

KeshavDesai — Mon, 03 Feb 2020 15:17:23 GMT

Hi Carlos,

Thanks for the reply. I am accessing this expression

${header.CamelHttpResponseCode} in the message body of a content modifier in an exception process block.

Re: SAP CPI : iFlow - Exception process block - access HTTP status code

r_herrmann — Mon, 03 Feb 2020 17:37:49 GMT

Hi Keshav,

in case of an exception (subprocess) it should also be possible to read the status code from the exception. In Groovy you would write something like this:

import com.sap.gateway.ip.core.customdev.util.Message;
import java.util.HashMap;


def Message processData(Message message) {
 
	def map = message.getProperties();
	def ex = map.get("CamelExceptionCaught");
	if (ex!=null) {
		message.setHeader("status_code", ex.getStatusCode());
    }      
	return message;
}

Then you could access the status code after the script step via the "status_code" header for routing purposes, etc.

Best regards,
Raffael

Re: SAP CPI : iFlow - Exception process block - access HTTP status code

KeshavDesai — Tue, 04 Feb 2020 14:33:51 GMT

Thanks Raffael. Yes, I can get the status code in the script. Surprised why the same cannot be accessed using the simple expression in the content modifier [by creating a new header/exchange property/even while setting the body].

Also, what other methods can we access from the exception object [

def ex = map.get("CamelExceptionCaught");]? In my case I am getting a

org.apache.cxf.binding.soap.SoapFault exception.

Re: SAP CPI : iFlow - Exception process block - access HTTP status code

r_herrmann — Tue, 04 Feb 2020 15:41:33 GMT

Hi Keshav,

there are also methods like "getStatusText" and "getResponseBody" in the exception object. Check the samples over here: https://help.sap.com/viewer/368c481cd6954bdfa5d0435479fd4eaf/Cloud/en-US/a443efe1d5d2403fb95ee9def1a672d4.html

In addition, maybe you don't need a script to access the status text, but can set it directly to a property by using Apache Simple Expression. It could work like the following (but I haven't tested it - so no proof that it works):

${property.CamelExceptionCaught.getStatusCode()}

Re: SAP CPI : iFlow - Exception process block - access HTTP status code

KeshavDesai — Fri, 14 Feb 2020 11:39:44 GMT

Thanks for your reply Raffael. Unfortunately, not all methods [get*] listed for the SoapFault in

https://cxf.apache.org/javadoc/latest/org/apache/cxf/binding/soap/SoapFault.html will return details of the fault. I am, however able to get the status code and a message [does not detail the cause of exception], to use in the error log for my response message.

I did notice that in message monitoring, 'Open Text View' in the Logs [even in case of log level Info] has details of the exception, like the status text etc. I believe to get these log details, we will have to use the ODATA API to query the message processing log (?)