JSON.parse() stopped a Business Rule running

[Wayne Richmond]

Hi all. I have a Business Rule that triggers a REST API call that sends an attachment to one of our vendors. It's worked fine for two years with no updates. Last week it stopped working for no reason - no update sets deployed, no updates to the BR, no patches\updates installed. After adding gs.info messages to almost every line, I concluded the following line was preventing the API call and nothing after this line was being run.

var parsedJSON = JSON.parse(responseBody);

As soon as I commented out this line, the API worked and the rest of the code after this line worked. Why would this suddenly kill the BR?

Complete code below:

(function executeRule(current, previous /*null when async*/ ) {

    // Get the attachment object from the sys_attachment table using the sys_id from the current record
    var att = new GlideRecord('sys_attachment');
    att.get(current.u_attachment_file_sysid);

    var gsa = GlideSysAttachmentInputStream(att.sys_id.toString());
    var baos = new Packages.java.io.ByteArrayOutputStream();
    gsa.writeTo(baos, 0, 0);
    baos.close();
    var encodedFile = new GlideStringUtil.base64Encode(baos.toByteArray());
    var fileName = att.file_name.toString();
    var contentType = att.content_type.toString();

    // get the incident object as we'll need to update it later
    var incGr = new GlideRecord('incident');
    incGr.get(current.u_task);

    var body = {};
    body.ParentId = incGr.getValue('u_vendor_sys_id');
    body.Name = fileName;
    body.Body = encodedFile;

    var request = new sn_ws.RESTMessageV2('XXXX Incident Integration', 'Send Attachment'); // REST Message Name, Method Name
    request.setRequestBody(JSON.stringify(body));

    // Set the endpoint, subscription key, contact email, and account ID HTTP Headers dynamically based on our instance
    var endpoint = '';
    var subkey = '';
    var contactEmail = '';
    var accountId = gs.getProperty('XXXX.by.integration.account_id');
    if (gs.getProperty('instance_name') == 'XXXX') {
        endpoint = gs.getProperty('XXXX.by.integration.endpoint.send.attachment.prod');
        subkey = gs.getProperty('XXXX.by.integration.subscriptionkey.prod');
        contactEmail = gs.getProperty('XXXX.by.integration.contactemail.prod');
    } else {
        endpoint = gs.getProperty('XXXX.by.integration.endpoint.send.attachment.test');
        subkey = gs.getProperty('XXXX.by.integration.subscriptionkey.test');
        contactEmail = gs.getProperty('XXXX.by.integration.contactemail.test');
    }

    request.setEndpoint(endpoint);
    request.setRequestHeader('Ocp-Apim-Subscription-Key', subkey);
    request.setQueryParameter('account-id', accountId);
    request.setQueryParameter('user-name', contactEmail);

    var response = request.execute();
    var requestBody = request.getRequestBody();
    var responseBody = response.getBody();
    var httpStatus = response.getStatusCode();
    var errorMsg = response.getErrorMessage();
    //var parsedJSON = JSON.parse(responseBody); // Commented this out because it seemed to stop the code past this point and the request being sent

    // If we get a successful status code, update our incident
    if (httpStatus == '200') {
        current.u_attachment_sent = true;
        current.update();
    } else gs.info('Send Attachment to XXXX - Failed to update incident! Status code: ' + httpStatus + ', with error message: ' + errorMsg);

})(current, previous);

[palanikumar]

Hi,

Check the content of responseBody. There is a possibility that the format of API response is changed from JSON to a different format which could have caused this issue.

Thank you,

Palani

[Wayne Richmond]

Interesting idea, Palani. Now that you mention it, when I reviewed the payload from Postman, I saw HTML content in the response.