Visual FoxPro

Call an AWS Lambda Function

See more AWS Misc Examples

Demonstrates how to call an AWS Lambda function. Visual FoxPro

LOCAL lnSuccess
LOCAL loRest
LOCAL lnBTls
LOCAL lnPort
LOCAL lnBAutoReconnect
LOCAL loAuthAws
LOCAL loJson
LOCAL loSbRequestBody
LOCAL loSbResponseBody
LOCAL lnStatusCode

lnSuccess = 0

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

loRest = CreateObject('Chilkat.Rest')

* Connect to the Amazon AWS REST server.
* such as https://email.us-west-2.amazonaws.com/
lnBTls = 1
lnPort = 443
lnBAutoReconnect = 1

* -------------------------------------------------------------------------------------------
* 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:
lnSuccess = loRest.Connect("itwxyj3vd6gjtaerbfqnfccs2e0fplzh.lambda-url.us-west-2.on.aws",lnPort,lnBTls,lnBAutoReconnect)

* Provide AWS credentials for the REST call.
loAuthAws = CreateObject('Chilkat.AuthAws')
loAuthAws.AccessKey = "AWS_ACCESS_KEY"
loAuthAws.SecretKey = "AWS_SECRET_KEY"
* the region should match our domain above..
loAuthAws.Region = "us-west-2"
loAuthAws.ServiceName = "lambda"

loRest.SetAuthAws(loAuthAws)

loJson = CreateObject('Chilkat.JsonObject')
loJson.UpdateString("name","Benny")

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

loSbRequestBody = CreateObject('Chilkat.StringBuilder')
loJson.EmitSb(loSbRequestBody)

loSbResponseBody = CreateObject('Chilkat.StringBuilder')
lnSuccess = loRest.FullRequestSb("POST","/",loSbRequestBody,loSbResponseBody)
IF (lnSuccess = 0) THEN
    ? loRest.LastErrorText
    RELEASE loRest
    RELEASE loAuthAws
    RELEASE loJson
    RELEASE loSbRequestBody
    RELEASE loSbResponseBody
    CANCEL
ENDIF

lnStatusCode = loRest.ResponseStatusCode
IF (lnStatusCode >= 400) THEN
    ? "Response Status Code: " + STR(lnStatusCode)
    ? "Response Body: " + loSbResponseBody.GetAsString()
    ? "Failed."
    RELEASE loRest
    RELEASE loAuthAws
    RELEASE loJson
    RELEASE loSbRequestBody
    RELEASE loSbResponseBody
    CANCEL
ENDIF

? "Response Body:"
? loSbResponseBody.GetAsString()

RELEASE loRest
RELEASE loAuthAws
RELEASE loJson
RELEASE loSbRequestBody
RELEASE loSbResponseBody