Dart

SNS List Topics

See more Amazon SNS Examples

List the existing SNS topics.

See SNS List Topics for more information.

Dart

import 'package:chilkat/chilkat.dart';

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

  final rest = CkRest();

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

  // Provide AWS credentials for the REST call.
  final authAws = CkAuthAws();
  authAws.accessKey = 'AWS_ACCESS_KEY';
  authAws.secretKey = 'AWS_SECRET_KEY';
  // the region should match our URL above..
  authAws.region = 'us-west-2';
  authAws.serviceName = 'sns';

  rest.setAuthAws(authAws);

  rest.addQueryParam('Action', 'ListTopics');

  final String responseXml;
  try {
    responseXml = rest.fullRequestNoBody('GET', '/');
  } on ChilkatException catch (e) {
    print(e.lastErrorText);
    return;
  }

  // A successful response will have a status code equal to 200.
  if (rest.responseStatusCode != 200) {
    print('response status code = ${rest.responseStatusCode}');
    print('response status text = ${rest.responseStatusText}');
    print('response header: ${rest.responseHeader}');
    print('response body: $responseXml');
    return;
  }

  // Examine the successful XML response (shown below)
  final xml = CkXml();
  xml.loadXml(responseXml);
  print(xml.getXml());

  // To iterate over the TopicArn's
  final notUsed = xml.chilkatPath('ListTopicsResult|Topics|\$');
  var i = 0;
  final numTopics = xml.numChildren;
  while (i < numTopics) {
    xml.getChild2(i);
    print(xml.getChildContent('TopicArn'));
    xml.getParent2();
    i++;
  }

  xml.getRoot2();

  // A sample successful response:
  // <?xml version="1.0" encoding="utf-8" ?>
  // <ListTopicsResponse xmlns="http://sns.amazonaws.com/doc/2010-03-31/">
  //     <ListTopicsResult>
  //         <Topics>
  //             <member>
  //                 <TopicArn>arn:aws:sns:us-west-2:957491831129:chilkat</TopicArn>
  //             </member>
  //             <member>
  //                 <TopicArn>arn:aws:sns:us-west-2:957491831129:chilkat123</TopicArn>
  //             </member>
  //             <member>
  //                 <TopicArn>arn:aws:sns:us-west-2:957491831129:chilkatses</TopicArn>
  //             </member>
  //         </Topics>
  //     </ListTopicsResult>
  //     <ResponseMetadata>
  //         <RequestId>54514f94-b07d-5f0b-9c8a-1ff85ff4ac65</RequestId>
  //     </ResponseMetadata>
  // </ListTopicsResponse>
}