(JavaScript) Call an AWS Lambda Function

Demonstrates how to call an AWS Lambda function.

Note

This example is intended for running within a Chilkat.Js embedded JavaScript engine. All Chilkat JavaScript examples require Chilkat v11.4.0 or greater.

var success = false;

// This example requires the Chilkat API to have been previously unlocked.
// See Global Unlock Sample for sample code.

var rest = new CkRest();

// Connect to the Amazon AWS REST server.
// such as https://email.us-west-2.amazonaws.com/
var bTls = true;
var port = 443;
var bAutoReconnect = true;

// -------------------------------------------------------------------------------------------
// Note: The source of the lambda function (hosted on AWS) is shown at the bottom of this page.
// --------------------------------------------------------------------------------------------

// If your lambda function URL is: https://itwxyj3vd6gjtaerbfqnfccs2e0fplzh.lambda-url.us-west-2.on.aws/
// then use just the domain part here:
success = rest.Connect("itwxyj3vd6gjtaerbfqnfccs2e0fplzh.lambda-url.us-west-2.on.aws",port,bTls,bAutoReconnect);

// Provide AWS credentials for the REST call.
var authAws = new CkAuthAws();
authAws.AccessKey = "AWS_ACCESS_KEY";
authAws.SecretKey = "AWS_SECRET_KEY";
// the region should match our domain above..
authAws.Region = "us-west-2";
authAws.ServiceName = "lambda";

rest.SetAuthAws(authAws);

var json = new CkJsonObject();
json.UpdateString("name","Benny");

rest.AddHeader("Content-Type","application/json");

var sbRequestBody = new CkStringBuilder();
json.EmitSb(sbRequestBody);

var sbResponseBody = new CkStringBuilder();
success = rest.FullRequestSb("POST","/",sbRequestBody,sbResponseBody);
if (success == false) {
    console.log(rest.LastErrorText);
    return;
}

var statusCode = rest.ResponseStatusCode;
if (statusCode >= 400) {
    console.log("Response Status Code: " + statusCode);
    console.log("Response Body: " + sbResponseBody.GetAsString());
    console.log("Failed.");
    return;
}

console.log("Response Body:");
console.log(sbResponseBody.GetAsString());