Chilkat Online Tools

GetChannelMessage delphiAx Example

Amazon Chime

var
rest: TChilkatRest;
success: Integer;
authAws: TChilkatAuthAws;
sbResponseBody: TChilkatStringBuilder;
respStatusCode: Integer;
jResp: TChilkatJsonObject;
ChannelArn: WideString;
Content: WideString;
CreatedTimestamp: Integer;
LastEditedTimestamp: Integer;
LastUpdatedTimestamp: Integer;
MessageId: WideString;
Metadata: WideString;
Persistence: WideString;
Redacted: Integer;
Arn: WideString;
Name: WideString;
v_Type: 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 := 'chime';
// SetAuthAws causes Chilkat to automatically add the following headers: Authorization, X-Amz-Date
rest.SetAuthAws(authAws.ControlInterface);

// URL: https://chime.us-west-2.amazonaws.com/
// Use the same region as specified above.
success := rest.Connect('chime.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;

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

sbResponseBody := TChilkatStringBuilder.Create(Self);
success := rest.FullRequestNoBodySb('GET','/channels/{channelArn}/messages/{messageId}',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

ChannelArn := jResp.StringOf('ChannelMessage.ChannelArn');
Content := jResp.StringOf('ChannelMessage.Content');
CreatedTimestamp := jResp.IntOf('ChannelMessage.CreatedTimestamp');
LastEditedTimestamp := jResp.IntOf('ChannelMessage.LastEditedTimestamp');
LastUpdatedTimestamp := jResp.IntOf('ChannelMessage.LastUpdatedTimestamp');
MessageId := jResp.StringOf('ChannelMessage.MessageId');
Metadata := jResp.StringOf('ChannelMessage.Metadata');
Persistence := jResp.StringOf('ChannelMessage.Persistence');
Redacted := jResp.IntOf('ChannelMessage.Redacted');
Arn := jResp.StringOf('ChannelMessage.Sender.Arn');
Name := jResp.StringOf('ChannelMessage.Sender.Name');
v_Type := jResp.StringOf('ChannelMessage.Type');

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

// {
//   "ChannelMessage": {
//     "ChannelArn": "string",
//     "Content": "string",
//     "CreatedTimestamp": number,
//     "LastEditedTimestamp": number,
//     "LastUpdatedTimestamp": number,
//     "MessageId": "string",
//     "Metadata": "string",
//     "Persistence": "string",
//     "Redacted": boolean,
//     "Sender": {
//       "Arn": "string",
//       "Name": "string"
//     },
//     "Type": "string"
//   }
// }