Chilkat Online Tools

DescribeEndpoint delphiAx Example

Amazon Comprehend

var
rest: TChilkatRest;
success: Integer;
authAws: TChilkatAuthAws;
json: TChilkatJsonObject;
sbRequestBody: TChilkatStringBuilder;
sbResponseBody: TChilkatStringBuilder;
respStatusCode: Integer;
jResp: TChilkatJsonObject;
CreationTime: Integer;
CurrentInferenceUnits: Integer;
DataAccessRoleArn: WideString;
DesiredDataAccessRoleArn: WideString;
DesiredInferenceUnits: Integer;
DesiredModelArn: WideString;
EndpointArn: WideString;
LastModifiedTime: Integer;
Message: WideString;
ModelArn: WideString;
Status: WideString;

begin
// This example requires the Chilkat API to have been previously unlocked.
// See Global Unlock Sample for sample code.

rest := TChilkatRest.Create(Self);

authAws := TChilkatAuthAws.Create(Self);
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 := 'comprehend';
// SetAuthAws causes Chilkat to automatically add the following headers: Authorization, X-Amz-Date
rest.SetAuthAws(authAws.ControlInterface);

// URL: https://comprehend.us-west-2.amazonaws.com/
// Use the same region as specified above.
success := rest.Connect('comprehend.us-west-2.amazonaws.com',443,1,1);
if (success <> 1) then
  begin
    Memo1.Lines.Add('ConnectFailReason: ' + IntToStr(rest.ConnectFailReason));
    Memo1.Lines.Add(rest.LastErrorText);
    Exit;
  end;

// The following code creates the JSON request body.
// The JSON created by this code is shown below.

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

json := TChilkatJsonObject.Create(Self);
json.UpdateString('EndpointArn','string');

// The JSON request body created by the above code:

// {
//   "EndpointArn": "string"
// }

rest.AddHeader('Content-Type','application/x-amz-json-1.1');
rest.AddHeader('X-Amz-Target','Comprehend_20171127.DescribeEndpoint');

sbRequestBody := TChilkatStringBuilder.Create(Self);
json.EmitSb(sbRequestBody.ControlInterface);
sbResponseBody := TChilkatStringBuilder.Create(Self);
success := rest.FullRequestSb('POST','/',sbRequestBody.ControlInterface,sbResponseBody.ControlInterface);
if (success <> 1) then
  begin
    Memo1.Lines.Add(rest.LastErrorText);
    Exit;
  end;
respStatusCode := rest.ResponseStatusCode;
Memo1.Lines.Add('response status code = ' + IntToStr(respStatusCode));
if (respStatusCode <> 200) then
  begin
    Memo1.Lines.Add('Response Header:');
    Memo1.Lines.Add(rest.ResponseHeader);
    Memo1.Lines.Add('Response Body:');
    Memo1.Lines.Add(sbResponseBody.GetAsString());
    Exit;
  end;

jResp := TChilkatJsonObject.Create(Self);
jResp.LoadSb(sbResponseBody.ControlInterface);

// The following code parses the JSON response.
// A sample JSON response is shown below the sample code.

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

CreationTime := jResp.IntOf('EndpointProperties.CreationTime');
CurrentInferenceUnits := jResp.IntOf('EndpointProperties.CurrentInferenceUnits');
DataAccessRoleArn := jResp.StringOf('EndpointProperties.DataAccessRoleArn');
DesiredDataAccessRoleArn := jResp.StringOf('EndpointProperties.DesiredDataAccessRoleArn');
DesiredInferenceUnits := jResp.IntOf('EndpointProperties.DesiredInferenceUnits');
DesiredModelArn := jResp.StringOf('EndpointProperties.DesiredModelArn');
EndpointArn := jResp.StringOf('EndpointProperties.EndpointArn');
LastModifiedTime := jResp.IntOf('EndpointProperties.LastModifiedTime');
Message := jResp.StringOf('EndpointProperties.Message');
ModelArn := jResp.StringOf('EndpointProperties.ModelArn');
Status := jResp.StringOf('EndpointProperties.Status');

// A sample JSON response body parsed by the above code:

// {
//   "EndpointProperties": {
//     "CreationTime": number,
//     "CurrentInferenceUnits": number,
//     "DataAccessRoleArn": "string",
//     "DesiredDataAccessRoleArn": "string",
//     "DesiredInferenceUnits": number,
//     "DesiredModelArn": "string",
//     "EndpointArn": "string",
//     "LastModifiedTime": number,
//     "Message": "string",
//     "ModelArn": "string",
//     "Status": "string"
//   }
// }