Is it possible to use xmlHttpRequest in NIFI processor to invoke remote rest service? In my case the ExecuteScript
processor (using Javascript) can't evaluate XMLHttpRequest
; is there any similar solution I can use to get response data?
var OutputStreamCallback = Java.type("org.apache.nifi.processor.io.OutputStreamCallback");
var StandardCharsets = Java.type("java.nio.charset.StandardCharsets");
Date.prototype.isValid = function () {
return (Object.prototype.toString.call(this) === "[object Date]")
&& !isNaN(this.getTime());
};
var flowFile = session.get();
if (flowFile != null) {
var fromDate = flowFile.getAttribute('fromDate')
var uid = flowFile.getAttribute('uid')
var xmlhttp = null;
var result = null;
xmlhttp = new XMLHttpRequest();
if (typeof xmlhttp.overrideMimeType != 'undefined') {
xmlhttp.overrideMimeType('application/json');
} else if (window.ActiveXObject) {
xmlhttp = new ActiveXObject("Microsoft.XMLHTTP");
}
xmlhttp.open('GET', "similar url here WorkInfo?dateFrom=?&uid=?", true);
xmlhttp.send(dateFrom, uid);
if (xmlhttp.status == 200) {
result = 'WorkInfoDate'
}
flowFile = session.putAttribute(flowFile, 'filename', fromDate + '_' + result);
flowFile = session.write(flowFile,
new OutputStreamCallback(function (outputStream) {
outputStream.write(command.getBytes(StandardCharsets.UTF_8))
}));
session.transfer(flowFile, REL_SUCCESS)
}