Delphi DLL

SNS Subscribe Email Address

See more Amazon SNS Examples

Subscribe an email address to an SNS topic.

See SNS Subscribe for more information.

Delphi DLL

uses
    Winapi.Windows, Winapi.Messages, System.SysUtils, System.Variants, System.Classes, Vcl.Graphics,
    Vcl.Controls, Vcl.Forms, Vcl.Dialogs, Vcl.StdCtrls, AuthAws, Rest, Xml;

...

procedure TForm1.Button1Click(Sender: TObject);
var
success: Boolean;
rest: HCkRest;
bTls: Boolean;
port: Integer;
bAutoReconnect: Boolean;
authAws: HCkAuthAws;
responseXml: PWideChar;
xml: HCkXml;

begin
success := False;

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

rest := CkRest_Create();

// Connect to the Amazon AWS REST server.
// such as https://sns.us-west-2.amazonaws.com/
bTls := True;
port := 443;
bAutoReconnect := True;
success := CkRest_Connect(rest,'sns.us-west-2.amazonaws.com',port,bTls,bAutoReconnect);

// Provide AWS credentials for the REST call.
authAws := CkAuthAws_Create();
CkAuthAws_putAccessKey(authAws,'AWS_ACCESS_KEY');
CkAuthAws_putSecretKey(authAws,'AWS_SECRET_KEY');
// the region should match our URL above..
CkAuthAws_putRegion(authAws,'us-west-2');
CkAuthAws_putServiceName(authAws,'sns');

CkRest_SetAuthAws(rest,authAws);

CkRest_AddQueryParam(rest,'Action','Subscribe');
CkRest_AddQueryParam(rest,'Endpoint','somebody@some-email-address.com');
CkRest_AddQueryParam(rest,'Protocol','email');
CkRest_AddQueryParam(rest,'TopicArn','arn:aws:sns:us-west-2:957491831129:chilkat');

responseXml := CkRest__fullRequestNoBody(rest,'GET','/');
if (CkRest_getLastMethodSuccess(rest) <> True) then
  begin
    Memo1.Lines.Add(CkRest__lastErrorText(rest));
    Exit;
  end;

// A successful response will have a status code equal to 200.
if (CkRest_getResponseStatusCode(rest) <> 200) then
  begin
    Memo1.Lines.Add('response status code = ' + IntToStr(CkRest_getResponseStatusCode(rest)));
    Memo1.Lines.Add('response status text = ' + CkRest__responseStatusText(rest));
    Memo1.Lines.Add('response header: ' + CkRest__responseHeader(rest));
    Memo1.Lines.Add('response body: ' + responseXml);
    Exit;
  end;

// Examine the successful XML response.
xml := CkXml_Create();
CkXml_LoadXml(xml,responseXml);
Memo1.Lines.Add(CkXml__getXml(xml));

// To get the SubscriptionArn (which in this case is "pending confirmation")
Memo1.Lines.Add('SubscriptionArn: ' + CkXml__chilkatPath(xml,'SubscribeResult|SubscriptionArn|*'));

// A sample successful response:
// <?xml version="1.0" encoding="utf-8" ?>
// <SubscribeResponse xmlns="http://sns.amazonaws.com/doc/2010-03-31/">
//     <SubscribeResult>
//         <SubscriptionArn>pending confirmation</SubscriptionArn>
//     </SubscribeResult>
//     <ResponseMetadata>
//         <RequestId>c5490a81-973b-5fa6-93dc-5bed689c212f</RequestId>
//     </ResponseMetadata>
// </SubscribeResponse>

CkRest_Dispose(rest);
CkAuthAws_Dispose(authAws);
CkXml_Dispose(xml);

end;