React Native

SNS List Topics

See more Amazon SNS Examples

List the existing SNS topics.

See SNS List Topics for more information.

React Native

import { AuthAws, Rest, Xml } from '@chilkat/react-native'

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

  const rest = new Rest();

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

  // Provide AWS credentials for the REST call.
  const authAws = new AuthAws();
  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');

  let responseXml: string;
  try {
    responseXml = await rest.fullRequestNoBodyAsync('GET', '/');
  } catch {
    console.log(rest.lastErrorText);
    return;
  }

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

  // Examine the successful XML response (shown below)
  const xml = new Xml();
  xml.loadXml(responseXml);
  console.log(xml.getXml());

  // To iterate over the TopicArn's
  const notUsed = xml.chilkatPath('ListTopicsResult|Topics|$');
  let i = 0;
  const numTopics = xml.numChildren;
  while (i < numTopics) {
    xml.getChild2(i);
    console.log(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>
}