Try catch in script include

[Geeky]

Hi,

I am publishing a scripted web service and have code in the script include. For better error handling of an unexpected error, thinking of using try-catch block.

Can anybody share a code snippet of how to use a try-catch block for displaying the error message in response to the API call?

[Dylan Mann1]

Here's a script generated by SN, I just added the log at the bottom. Cheers

try { 
 var r = new sn_ws.RESTMessageV2('My End Point', 'get');
 r.setStringParameterNoEscape('symbol', '');

//override authentication profile 
//authentication type ='basic'/ 'oauth2'
//r.setAuthenticationProfile(authentication type, profile name);

//set a MID server name if one wants to run the message on MID
//r.setMIDServer('MY_MID_SERVER');

//if the message is configured to communicate through ECC queue, either
//by setting a MID server or calling executeAsync, one needs to set skip_sensor
//to true. Otherwise, one may get an intermittent error that the response body is null
//r.setEccParameter('skip_sensor', true);

 var response = r.execute();
 var responseBody = response.getBody();
 var httpStatus = response.getStatusCode();
}
catch(ex) {
 var message = ex.message;
 gs.error("Error in system logs: " + message);
}

[Geeky]

How can I store request body received from third party tool, response sent from SN and error messages for any troubleshooting purposes? Do I need to create a custom table to store them?

[Dylan Mann1]

You certainly could do that, here's a post showing how you can view a log of REST API activity. 

https://community.servicenow.com/community?id=community_question&sys_id=726c07a5db9cdbc01dcaf3231f96...

Not sure if it satisfies what you're looking for but could be useful.

[Sufiyan Memon]

Hi Geeky

You can use following try/catch structure for that.

try {

// Code will be here in which you are expecting to get error

}

catch(err){   

var error_message = err.message;

// error_message variable will have the error message that you can use for further. 

}

Please mark as correct if it resolve your issue or let me know if further explanation needed.

Thanks