(SQL Server) Call an AWS Lambda Function

Demonstrates how to call an AWS Lambda function.

Chilkat ActiveX Downloads ActiveX for 32-bit and 64-bit Windows

-- Important: See this note about string length limitations for strings returned by sp_OAMethod calls.
--
CREATE PROCEDURE ChilkatSample
AS
BEGIN
    DECLARE @hr int
    -- Important: Do not use nvarchar(max).  See the warning about using nvarchar(max).
    DECLARE @sTmp0 nvarchar(4000)
    DECLARE @success int
    SELECT @success = 0

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

    DECLARE @rest int
    EXEC @hr = sp_OACreate 'Chilkat.Rest', @rest OUT
    IF @hr <> 0
    BEGIN
        PRINT 'Failed to create ActiveX component'
        RETURN
    END

    -- Connect to the Amazon AWS REST server.
    -- such as https://email.us-west-2.amazonaws.com/
    DECLARE @bTls int
    SELECT @bTls = 1
    DECLARE @port int
    SELECT @port = 443
    DECLARE @bAutoReconnect int
    SELECT @bAutoReconnect = 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:
    EXEC sp_OAMethod @rest, 'Connect', @success OUT, 'itwxyj3vd6gjtaerbfqnfccs2e0fplzh.lambda-url.us-west-2.on.aws', @port, @bTls, @bAutoReconnect

    -- Provide AWS credentials for the REST call.
    DECLARE @authAws int
    EXEC @hr = sp_OACreate 'Chilkat.AuthAws', @authAws OUT

    EXEC sp_OASetProperty @authAws, 'AccessKey', 'AWS_ACCESS_KEY'
    EXEC sp_OASetProperty @authAws, 'SecretKey', 'AWS_SECRET_KEY'
    -- the region should match our domain above..
    EXEC sp_OASetProperty @authAws, 'Region', 'us-west-2'
    EXEC sp_OASetProperty @authAws, 'ServiceName', 'lambda'

    EXEC sp_OAMethod @rest, 'SetAuthAws', @success OUT, @authAws

    DECLARE @json int
    EXEC @hr = sp_OACreate 'Chilkat.JsonObject', @json OUT

    EXEC sp_OAMethod @json, 'UpdateString', @success OUT, 'name', 'Benny'

    EXEC sp_OAMethod @rest, 'AddHeader', @success OUT, 'Content-Type', 'application/json'

    DECLARE @sbRequestBody int
    EXEC @hr = sp_OACreate 'Chilkat.StringBuilder', @sbRequestBody OUT

    EXEC sp_OAMethod @json, 'EmitSb', @success OUT, @sbRequestBody

    DECLARE @sbResponseBody int
    EXEC @hr = sp_OACreate 'Chilkat.StringBuilder', @sbResponseBody OUT

    EXEC sp_OAMethod @rest, 'FullRequestSb', @success OUT, 'POST', '/', @sbRequestBody, @sbResponseBody
    IF @success = 0
      BEGIN
        EXEC sp_OAGetProperty @rest, 'LastErrorText', @sTmp0 OUT
        PRINT @sTmp0
        EXEC @hr = sp_OADestroy @rest
        EXEC @hr = sp_OADestroy @authAws
        EXEC @hr = sp_OADestroy @json
        EXEC @hr = sp_OADestroy @sbRequestBody
        EXEC @hr = sp_OADestroy @sbResponseBody
        RETURN
      END

    DECLARE @statusCode int
    EXEC sp_OAGetProperty @rest, 'ResponseStatusCode', @statusCode OUT
    IF @statusCode >= 400
      BEGIN

        PRINT 'Response Status Code: ' + @statusCode

        EXEC sp_OAMethod @sbResponseBody, 'GetAsString', @sTmp0 OUT
        PRINT 'Response Body: ' + @sTmp0

        PRINT 'Failed.'
        EXEC @hr = sp_OADestroy @rest
        EXEC @hr = sp_OADestroy @authAws
        EXEC @hr = sp_OADestroy @json
        EXEC @hr = sp_OADestroy @sbRequestBody
        EXEC @hr = sp_OADestroy @sbResponseBody
        RETURN
      END


    PRINT 'Response Body:'
    EXEC sp_OAMethod @sbResponseBody, 'GetAsString', @sTmp0 OUT
    PRINT @sTmp0

    EXEC @hr = sp_OADestroy @rest
    EXEC @hr = sp_OADestroy @authAws
    EXEC @hr = sp_OADestroy @json
    EXEC @hr = sp_OADestroy @sbRequestBody
    EXEC @hr = sp_OADestroy @sbResponseBody


END
GO

export const handler = async (event) => {

    let body = "Hello World";

    if (event.body) {
        const input = JSON.parse(event.body);
        if (input.name) {
            body = "Hello " + input.name;
        }
    }

    return {
        statusCode: 200,
        headers: {
            "Content-Type": "application/json"
        },
        body: JSON.stringify({
            message: body
        })
    };
};