HTTP sender in Javascript

This blog post is about developing HTTP sender in Mirth, without having to send your data via destination.

Suppose, consider a situation when we need to loop through the incoming message and we have to send/post the message multiple time. Mirth do not have the capability to store the loop content variable and pass that to the destination end. So, if you want to loop through the incoming message and send them to HTTP sender, we need to write the Javascript code in the source transformer.

Imagine, that “output” is the variable that contains the looped contents of information in HL7v2 format, now use the below code to invoke HTTTP sender via javascript.

do {
try {
var data = output;
//Destination URL
destURL = ‘http://localhost:8088/’;
//URL
var url = new java.net.URL(destURL);
var conn = url.openConnection();
conn.setDoOutput(true);
conn.setDoInput(true);
conn.setRequestMethod(“POST”);
conn.setRequestProperty(“Content-length”, data.length());
conn.setRequestProperty(“Content-type”, “text/plain”);
var outStream = conn.getOutputStream();
var outWriter = new java.io.OutputStreamWriter(outStream);
outWriter.write(data);
outWriter.close();
// Get response Code (200, 500 etc.)
var respCode = conn.getResponseCode();
// get response body
//getResponse();
var response = new XML($(‘RESPONSE’)); // XML response message
var status = response[‘Status’].toString();

if (respCode != 200) {
// Write error to error folder
var stringData = response.toString() + ‘\n’;
FileUtil.write(‘C:/Outbox/Errors/’ + $(‘originalFilename’) + ‘.ERROR_RESPONSE’, false, stringData);
// Return Error to Mirth to move the file to the error folder
return ERROR;
}
errorCond = ‘false’;
break;
}
catch(err) {
retry++;
if(retry > 10) {
channelMap.put(‘RESPONSE’, err);
responseMap.put(‘WEBSVC’, ResponseFactory.getErrorResponse(err))
throw(err);
// Can return ERROR, QUEUED, SENT
// This re-queues the message on a fatal error. I’m doing this since any fatal message may be
// caused by HTTPS connect errors etc. The message will be re-queued
return QUEUED; // Re-queue the message
}
java.lang.Thread.sleep(6000); // 6 seconds * 10

errorCond = ‘true’;
}
}
while (errorCond == ‘true’);

Note : This code should be present inside the for loop or the while loop, so that the specific HL7v2 message will be sent/posted to the destination