(Delphi DLL) Amazon Cognito - List User Pools

See more Amazon Cognito Examples

Lists the user pools associated with an AWS account.

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

Chilkat for Delphi Downloads Chilkat non-ActiveX DLL for Delphi Chilkat ActiveX DLL for Delphi * The examples here use the non-ActiveX DLL.

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

...

procedure TForm1.Button1Click(Sender: TObject);
var
rest: HCkRest;
success: Boolean;
authAws: HCkAuthAws;
bTls: Boolean;
port: Integer;
bAutoReconnect: Boolean;
json: HCkJsonObject;
sbRequestBody: HCkStringBuilder;
sbResponseBody: HCkStringBuilder;
respStatusCode: Integer;
jsonResponse: HCkJsonObject;
CreationDate: PWideChar;
Id: PWideChar;
LastModifiedDate: PWideChar;
Name: PWideChar;
i: Integer;
count_i: Integer;

begin
rest := CkRest_Create();

authAws := CkAuthAws_Create();
CkAuthAws_putAccessKey(authAws,'AWS_ACCESS_KEY');
CkAuthAws_putSecretKey(authAws,'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.)
CkAuthAws_putRegion(authAws,'us-west-2');
CkAuthAws_putServiceName(authAws,'cognito-idp');
// SetAuthAws causes Chilkat to automatically add the following headers: Authorization, X-Amz-Date
CkRest_SetAuthAws(rest,authAws);

// URL: https://cognito-idp.us-west-2.amazonaws.com/
bTls := True;
port := 443;
bAutoReconnect := True;
// Use the same region as specified above.
success := CkRest_Connect(rest,'cognito-idp.us-west-2.amazonaws.com',port,bTls,bAutoReconnect);
if (success <> True) then
  begin
    Memo1.Lines.Add('ConnectFailReason: ' + IntToStr(CkRest_getConnectFailReason(rest)));
    Memo1.Lines.Add(CkRest__lastErrorText(rest));
    Exit;
  end;

// 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.

json := CkJsonObject_Create();
CkJsonObject_UpdateInt(json,'MaxResults',60);

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

sbRequestBody := CkStringBuilder_Create();
CkJsonObject_EmitSb(json,sbRequestBody);
sbResponseBody := CkStringBuilder_Create();
success := CkRest_FullRequestSb(rest,'POST','/',sbRequestBody,sbResponseBody);
if (success <> True) then
  begin
    Memo1.Lines.Add(CkRest__lastErrorText(rest));
    Exit;
  end;

respStatusCode := CkRest_getResponseStatusCode(rest);
Memo1.Lines.Add('response status code = ' + IntToStr(respStatusCode));
if (respStatusCode <> 200) then
  begin
    Memo1.Lines.Add('Response Status Code = ' + IntToStr(respStatusCode));
    Memo1.Lines.Add('Response Header:');
    Memo1.Lines.Add(CkRest__responseHeader(rest));
    Memo1.Lines.Add('Response Body:');
    Memo1.Lines.Add(CkStringBuilder__getAsString(sbResponseBody));
    Exit;
  end;

jsonResponse := CkJsonObject_Create();
CkJsonObject_LoadSb(jsonResponse,sbResponseBody);

CkJsonObject_putEmitCompact(jsonResponse,False);
Memo1.Lines.Add(CkJsonObject__emit(jsonResponse));

// 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

// {
//   "UserPools": [
//     {
//       "CreationDate": 1.636388909817E9,
//       "Id": "us-west-2_yt6WzO3SA",
//       "LambdaConfig": {},
//       "LastModifiedDate": 1.636388910377E9,
//       "Name": "chilkat"
//     }
//   ]
// }

i := 0;
count_i := CkJsonObject_SizeOfArray(jsonResponse,'UserPools');
while i < count_i do
  begin
    CkJsonObject_putI(jsonResponse,i);
    CreationDate := CkJsonObject__stringOf(jsonResponse,'UserPools[i].CreationDate');
    Id := CkJsonObject__stringOf(jsonResponse,'UserPools[i].Id');
    LastModifiedDate := CkJsonObject__stringOf(jsonResponse,'UserPools[i].LastModifiedDate');
    Name := CkJsonObject__stringOf(jsonResponse,'UserPools[i].Name');
    i := i + 1;
  end;

CkRest_Dispose(rest);
CkAuthAws_Dispose(authAws);
CkJsonObject_Dispose(json);
CkStringBuilder_Dispose(sbRequestBody);
CkStringBuilder_Dispose(sbResponseBody);
CkJsonObject_Dispose(jsonResponse);

end;