React Native

Amazon Cognito - List Users

See more Amazon Cognito Examples

Lists the users in the Amazon Cognito user pool. React Native

import { AuthAws, JsonObject, Rest, StringBuilder } 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();

  const authAws = new AuthAws();
  authAws.accessKey = 'AWS_ACCESS_KEY';
  authAws.secretKey = 'AWS_SECRET_KEY';
  // Don't forget to change the region to your particular region. (Also make the same change in the call to Connect below.)
  authAws.region = 'us-west-2';
  authAws.serviceName = 'cognito-idp';
  // SetAuthAws causes Chilkat to automatically add the following headers: Authorization, X-Amz-Date
  rest.setAuthAws(authAws);

  // URL: https://cognito-idp.us-west-2.amazonaws.com/
  const bTls = true;
  const port = 443;
  const bAutoReconnect = true;
  // Use the same region as specified above.
  try {
    await rest.connectAsync('cognito-idp.us-west-2.amazonaws.com', port, bTls, bAutoReconnect);
  } catch {
    console.log(`ConnectFailReason: ${rest.connectFailReason}`);
    console.log(rest.lastErrorText);
    return;
  }

  // Note: The above code does not need to be repeatedly called for each REST request.
  // The rest object can be setup once, and then many requests can be sent.  Chilkat will automatically
  // reconnect within a FullRequest* method as needed.  It is only the very first connection that is explicitly
  // made via the Connect method.

  // The following JSON is sent in the request body.

  // {
  //     "UserPoolId": "us-west-2_yt6WzO3SA"
  // }
  // 

  const json = new JsonObject();
  json.updateString('UserPoolId', 'us-west-2_yt6WzO3SA');

  rest.addHeader('Content-Type', 'application/x-amz-json-1.0');
  rest.addHeader('X-Amz-Target', 'AWSCognitoIdentityProviderService.ListUsers');
  rest.addHeader('Accept-Encoding', 'identity');

  const sbRequestBody = new StringBuilder();
  json.emitSb(sbRequestBody);
  const sbResponseBody = new StringBuilder();
  try {
    await rest.fullRequestSbAsync('POST', '/', sbRequestBody, sbResponseBody);
  } catch {
    console.log(rest.lastErrorText);
    return;
  }

  const respStatusCode = rest.responseStatusCode;
  console.log(`response status code = ${respStatusCode}`);
  if (respStatusCode !== 200) {
    console.log(`Response Status Code = ${respStatusCode}`);
    console.log('Response Header:');
    console.log(rest.responseHeader);
    console.log('Response Body:');
    console.log(sbResponseBody.getAsString());
    return;
  }

  const jsonResponse = new JsonObject();
  jsonResponse.loadSb(sbResponseBody);

  jsonResponse.emitCompact = false;
  console.log(jsonResponse.emit());

  // Sample JSON response:
  // (Sample code for parsing the JSON response is shown below)

  // Use this online tool to generate parsing code from sample JSON: 
  // Generate Parsing Code from JSON

  // {
  //   "Users": [
  //     {
  //       "Attributes": [
  //         {
  //           "Name": "sub",
  //           "Value": "1874cf28-00d3-4ac1-a24a-68dcb0cecf09"
  //         },
  //         {
  //           "Name": "email_verified",
  //           "Value": "true"
  //         },
  //         {
  //           "Name": "phone_number_verified",
  //           "Value": "true"
  //         },
  //         {
  //           "Name": "phone_number",
  //           "Value": "+16302581871"
  //         },
  //         {
  //           "Name": "email",
  //           "Value": "admin@chilkatsoft.com"
  //         }
  //       ],
  //       "Enabled": true,
  //       "UserCreateDate": 1.636404386657E9,
  //       "UserLastModifiedDate": 1.636404386657E9,
  //       "UserStatus": "FORCE_CHANGE_PASSWORD",
  //       "Username": "matt"
  //     },
  //     {
  // 	. . .
  //     }
  //   ]
  // }

  let userCreateDate = '';
  let userLastModifiedDate = '';
  let userStatus = '';
  let username = '';
  let j = 0;
  let countJ = 0;
  let name = '';
  let value = '';

  let i = 0;
  const countI = jsonResponse.sizeOfArray('Users');
  while (i < countI) {
    jsonResponse.i = i;
    jsonResponse.boolOf('Users[i].Enabled');
    userCreateDate = jsonResponse.stringOf('Users[i].UserCreateDate');
    userLastModifiedDate = jsonResponse.stringOf('Users[i].UserLastModifiedDate');
    userStatus = jsonResponse.stringOf('Users[i].UserStatus');
    username = jsonResponse.stringOf('Users[i].Username');
    j = 0;
    countJ = jsonResponse.sizeOfArray('Users[i].Attributes');
    while (j < countJ) {
      jsonResponse.j = j;
      name = jsonResponse.stringOf('Users[i].Attributes[j].Name');
      value = jsonResponse.stringOf('Users[i].Attributes[j].Value');
      j++;
    }

    i++;
  }
}