Rest Template for using rest operations.

RestTemplate.js

// VMware vRealize Orchestrator action sample
// vRA 8.7.0
// input  type: restHost [REST:RESTHost]
// return type: Any

function createRestOperation(method, urlTemplate) {

	var op = new RESTOperation(urlTemplate);
	op.name = urlTemplate;
	op.method = method;
	op.urlTemplate = urlTemplate;
	op.defaultContentType = "application/json";
  
	//attach to host
	operation = restHost.addOperation(op);
	if (!restHost.skipRestHostUpdate) {
		RESTHostManager.updateHost(restHost);
	}	
}

function getRestOperation(method, urlTemplate) {
	for each (var id in restHost.getOperations()) {
		var o = restHost.getOperation(id);
		if (o.method == method && o.urlTemplate == urlTemplate) {
			return o;
		}
	}
	return null;
}

function getResponseValue(options, response){
	if(options && options.returnResponseObject == true){
		var responseValue = {
			contentAsString : response.contentAsString,
			contentLength : response.contentLength,
			statusCode : response.statusCode,
			responseHeaders : response.getAllHeaders()
		}
	}else{
		var responseValue = {}; // new lines from skycoding
		if(response.contentAsString != ""){
			responseValue = JSON.parse(response.contentAsString);
		}			
	}
	
	if (response.contentAsString && response.contentAsString != "") {
		return responseValue;
	}
}

function runRestOp(method, urlTemplate, params, headers, content, options) {
	var op = getRestOperation(method, urlTemplate);
	if (op == null) {
		System.log("Rest Operation[method:" + method + ";template:" + urlTemplate + "] not found. Creating one.");
		createRestOperation(method, urlTemplate);
		op = getRestOperation(method, urlTemplate);		
	}
	if (!op) {
		throw "Operation not found and wasn't able to create it."
	}
	
	if (!params) {
		params = [];
	}
	for (var i = 0; i < params.length; i++) {
		params[i] = encodeURIComponent(params[i]);
	}
	
		System.debug("================================================");	
		System.debug("Invoking REST Request:");
		System.debug("\tMethod: " + method);
		System.debug("\tURL Template: " + urlTemplate);
		System.debug("\tParams: " + params);
		System.debug("\tContent: " + (content ? JSON.stringify(content) : null));				

	var request = op.createRequest(params, (content ? JSON.stringify(content) : null));

	request.setHeader("Accept", "application/json");
	
	if (headers) {
		for (var key in headers) {
			var value = headers[key];
			System.debug("Key: " + key + ", Value: " + value); 
			request.setHeader(key, value);
		}
	}

	var response = request.execute();

		System.debug("REST Response: ");
		System.debug("\tStatus Code: " + response.statusCode);
		System.debug("\tContent: " + response.contentAsString);
		System.debug("================================================");
	
	if (("" + response.statusCode).indexOf("20") != 0) {
		throw response.statusCode + " Content: " + responseValue;
	}
	
	var responseValue = getResponseValue(options, response);
	
	return responseValue;
}
var RestTemplate = new function() {}

RestTemplate.get = function(urlTemplate, params, headers, options) {	
	return runRestOp("GET", urlTemplate, params, headers, null, options)
}

RestTemplate.post = function(urlTemplate, params, content, headers, options) {
	return runRestOp("POST", urlTemplate, params, headers, content, options)
}

RestTemplate.put = function(urlTemplate, params, content, headers, options) {
	return runRestOp("PUT", urlTemplate, params, headers, content, options)
}
RestTemplate.delete = function(urlTemplate, params, headers, options) {
	return runRestOp("DELETE", urlTemplate, params, headers, null, options)
}

RestTemplate.patch = function(urlTemplate, params, headers, content, options) {
	return runRestOp("PATCH", urlTemplate, params, headers, content, options)
}

return RestTemplate;