Call Rest Message from Flow Designer

[riwase]

I created Flow Designer Action which call REST Message via Script Includes to send an outbound REST web service request to external system.

but, I got the error below

No IntegrationHub plugin is available, external calls from the Flow Designer requires IntegrationHub subscription, <a target="_blank" href="https://docs.servicenow.com/?context=CSHelp:IntegrationHub-licensing-information">Read More</a>.

Although I know that it is impossible to call REST directly from the Flow Designer, I think that it was possible to go through Script Includes.

Could you tell me where the solution is?

Thanks

[Kartik Choudha1]

++ Attaching the 'Action script' code of 'copying the attachment' as well through REST message from flow designer-

(function execute(inputs, outputs) {
// ... code ...
try {

var encodedFile; //this will store the encoded version of the attachment.
var fileName;
var contentType;
//need to glide attachment table
var att = new GlideRecord('sys_attachment');
// we need to look for the attachment in sys_attachment table for current incident record
att.addQuery('table_name', inputs.tablename); 
att.addQuery('table_sys_id',inputs.incident_sys_id); // table_sys_id is the sysID of current incident record
att.query();
//one attachment for now
if(att.next()){
gs.info("Kartik if");
var gSysAtt = GlideSysAttachmentInputStream(att.sys_id.toString()); //GlideSysAttachment accepts the parameter of sys_id

/* the byte arr output stream, for that we are using the package curl, this is the java file in backed which we donot have access to */
var byteos = new Packages.java.io.ByteArrayOutputStream();

//Now we will write these bytes into glideSysAttachmentInputStream
gSysAtt.writeTo(byteos, 0, 0); //two nodes
byteos.close();

//fetch the encoded file from there and store it
encodedFile = GlideStringUtil.base64Encode(byteos.toByteArray()); // function to fetch, encoding function base64

//get the file name from attachment table
fileName = att.file_name;

//content type of att
contentType = att.content_type;
}

var r = new sn_ws.RESTMessageV2('PIP_integration_to_instanceB', 'copy incident');
r.setStringParameterNoEscape('correlation_id', inputs.correlation_id);
r.setStringParameterNoEscape('short_description', inputs.short_description);
r.setStringParameterNoEscape('description', inputs.description);
r.setStringParameterNoEscape('impact', inputs.impact);
r.setStringParameterNoEscape('urgency', inputs.urgency);
r.setStringParameterNoEscape('assignment_group', inputs.assignment_group);
r.setStringParameterNoEscape('assigned_to', inputs.assigned_to);
r.setStringParameterNoEscape('encodedFile', encodedFile);
r.setStringParameterNoEscape('nameOfFile', fileName);
r.setStringParameterNoEscape('typeOfFile', contentType);

var response = r.execute();
var responseBody = response.getBody();
var httpStatus = response.getStatusCode();
outputs.responsebody = responseBody;
} catch (ex) {
var message = ex.message;
}})(inputs, outputs);

At Instance B, you have to attach the attachment in created/updated incident. For that , we need to receive the attachment type, attachment file name, attachment data, decode the attachment data and attach it to incident in instance B.

I have written 'onAfter' transform script for same. Do remember to create three variable in your 'Staging table' - Attachment file Type, Attachment file Data, Attachment file name. So that we can retrieve them from 'Source' object in 'onAfter' transform script.

[Kartik Choudha1]

'OnAfter' script-

(function runTransformScript(source, map, log, target /*undefined onStart*/ ) {

// Add your code here
if (gs.nil(source.u_attachment_data)) {
gs.log("Kartik TM if");
ignore = true;
} else {
var grIncident = new GlideRecord('incident');
grIncident.get(target.sys_id);

var sa = new GlideSysAttachment();
sa.write(target, source.u_attachment_name, source.u_attachment_type, source.u_attachment_data);

}

})(source, map, log, target);