(Java) Amazon Cognito - List Users

See more Amazon Cognito Examples

Lists the users in the Amazon Cognito user pool.

For more information, see https://docs.aws.amazon.com/cognito-user-identity-pools/latest/APIReference/API_ListUsers.html

Chilkat Java Downloads Java Libs for Windows, MacOS, Linux, Alpine Linux, Solaris Java Libs for Android

import com.chilkatsoft.*;

public class ChilkatExample {

  static {
    try {
        System.loadLibrary("chilkat");
    } catch (UnsatisfiedLinkError e) {
      System.err.println("Native code library failed to load.\n" + e);
      System.exit(1);
    }
  }

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

    CkRest rest = new CkRest();
    boolean success;

    CkAuthAws authAws = new CkAuthAws();
    authAws.put_AccessKey("AWS_ACCESS_KEY");
    authAws.put_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.put_Region("us-west-2");
    authAws.put_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/
    boolean bTls = true;
    int port = 443;
    boolean bAutoReconnect = true;
    // Use the same region as specified above.
    success = rest.Connect("cognito-idp.us-west-2.amazonaws.com",port,bTls,bAutoReconnect);
    if (success != true) {
        System.out.println("ConnectFailReason: " + rest.get_ConnectFailReason());
        System.out.println(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"
    // }
    // 

    CkJsonObject json = new CkJsonObject();
    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");

    CkStringBuilder sbRequestBody = new CkStringBuilder();
    json.EmitSb(sbRequestBody);
    CkStringBuilder sbResponseBody = new CkStringBuilder();
    success = rest.FullRequestSb("POST","/",sbRequestBody,sbResponseBody);
    if (success != true) {
        System.out.println(rest.lastErrorText());
        return;
        }

    int respStatusCode = rest.get_ResponseStatusCode();
    System.out.println("response status code = " + respStatusCode);
    if (respStatusCode != 200) {
        System.out.println("Response Status Code = " + respStatusCode);
        System.out.println("Response Header:");
        System.out.println(rest.responseHeader());
        System.out.println("Response Body:");
        System.out.println(sbResponseBody.getAsString());
        return;
        }

    CkJsonObject jsonResponse = new CkJsonObject();
    jsonResponse.LoadSb(sbResponseBody);

    jsonResponse.put_EmitCompact(false);
    System.out.println(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"
    //     },
    //     {
    // 	. . .
    //     }
    //   ]
    // }

    boolean Enabled;
    String UserCreateDate;
    String UserLastModifiedDate;
    String UserStatus;
    String Username;
    int j;
    int count_j;
    String Name;
    String Value;

    int i = 0;
    int count_i = jsonResponse.SizeOfArray("Users");
    while (i < count_i) {
        jsonResponse.put_I(i);
        Enabled = 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;
        count_j = jsonResponse.SizeOfArray("Users[i].Attributes");
        while (j < count_j) {
            jsonResponse.put_J(j);
            Name = jsonResponse.stringOf("Users[i].Attributes[j].Name");
            Value = jsonResponse.stringOf("Users[i].Attributes[j].Value");
            j = j+1;
            }

        i = i+1;
        }
  }
}