Chilkat Online Tools

DescribeEndpoint delphiDll Example

Amazon Comprehend

var
rest: HCkRest;
success: Boolean;
authAws: HCkAuthAws;
json: HCkJsonObject;
sbRequestBody: HCkStringBuilder;
sbResponseBody: HCkStringBuilder;
respStatusCode: Integer;
jResp: HCkJsonObject;
CreationTime: Integer;
CurrentInferenceUnits: Integer;
DataAccessRoleArn: PWideChar;
DesiredDataAccessRoleArn: PWideChar;
DesiredInferenceUnits: Integer;
DesiredModelArn: PWideChar;
EndpointArn: PWideChar;
LastModifiedTime: Integer;
Message: PWideChar;
ModelArn: PWideChar;
Status: PWideChar;

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

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,'comprehend');
// SetAuthAws causes Chilkat to automatically add the following headers: Authorization, X-Amz-Date
CkRest_SetAuthAws(rest,authAws);

// URL: https://comprehend.us-west-2.amazonaws.com/
// Use the same region as specified above.
success := CkRest_Connect(rest,'comprehend.us-west-2.amazonaws.com',443,True,True);
if (success <> True) then
  begin
    Memo1.Lines.Add('ConnectFailReason: ' + IntToStr(CkRest_getConnectFailReason(rest)));
    Memo1.Lines.Add(CkRest__lastErrorText(rest));
    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 := CkJsonObject_Create();
CkJsonObject_UpdateString(json,'EndpointArn','string');

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

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

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

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 Header:');
    Memo1.Lines.Add(CkRest__responseHeader(rest));
    Memo1.Lines.Add('Response Body:');
    Memo1.Lines.Add(CkStringBuilder__getAsString(sbResponseBody));
    Exit;
  end;

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

// 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 := CkJsonObject_IntOf(jResp,'EndpointProperties.CreationTime');
CurrentInferenceUnits := CkJsonObject_IntOf(jResp,'EndpointProperties.CurrentInferenceUnits');
DataAccessRoleArn := CkJsonObject__stringOf(jResp,'EndpointProperties.DataAccessRoleArn');
DesiredDataAccessRoleArn := CkJsonObject__stringOf(jResp,'EndpointProperties.DesiredDataAccessRoleArn');
DesiredInferenceUnits := CkJsonObject_IntOf(jResp,'EndpointProperties.DesiredInferenceUnits');
DesiredModelArn := CkJsonObject__stringOf(jResp,'EndpointProperties.DesiredModelArn');
EndpointArn := CkJsonObject__stringOf(jResp,'EndpointProperties.EndpointArn');
LastModifiedTime := CkJsonObject_IntOf(jResp,'EndpointProperties.LastModifiedTime');
Message := CkJsonObject__stringOf(jResp,'EndpointProperties.Message');
ModelArn := CkJsonObject__stringOf(jResp,'EndpointProperties.ModelArn');
Status := CkJsonObject__stringOf(jResp,'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"
//   }
// }

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