Chilkat Online Tools

DescribeStream delphiAx Example

Amazon Kinesis Video Streams

var
rest: TChilkatRest;
success: Integer;
authAws: TChilkatAuthAws;
json: TChilkatJsonObject;
sbRequestBody: TChilkatStringBuilder;
sbResponseBody: TChilkatStringBuilder;
respStatusCode: Integer;
jResp: TChilkatJsonObject;
j: Integer;
count_j: Integer;
strVal: WideString;
AdjacentParentShardId: WideString;
EndingHashKey: WideString;
StartingHashKey: WideString;
ParentShardId: WideString;
EndingSequenceNumber: WideString;
StartingSequenceNumber: WideString;
ShardId: WideString;
EncryptionType: WideString;
HasMoreShards: Integer;
KeyId: WideString;
RetentionPeriodHours: Integer;
StreamARN: WideString;
StreamCreationTimestamp: Integer;
StreamMode: WideString;
StreamName: WideString;
StreamStatus: WideString;
i: Integer;
count_i: Integer;

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

// URL: https://kinesisvideo.us-west-2.amazonaws.com/
// Use the same region as specified above.
success := rest.Connect('kinesisvideo.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('ExclusiveStartShardId','string');
json.UpdateInt('Limit',123);
json.UpdateString('StreamName','string');

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

// {
//   "ExclusiveStartShardId": "string",
//   "Limit": number,
//   "StreamName": "string"
// }

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

sbRequestBody := TChilkatStringBuilder.Create(Self);
json.EmitSb(sbRequestBody.ControlInterface);
sbResponseBody := TChilkatStringBuilder.Create(Self);
success := rest.FullRequestSb('POST','/describeStream',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

EncryptionType := jResp.StringOf('StreamDescription.EncryptionType');
HasMoreShards := jResp.IntOf('StreamDescription.HasMoreShards');
KeyId := jResp.StringOf('StreamDescription.KeyId');
RetentionPeriodHours := jResp.IntOf('StreamDescription.RetentionPeriodHours');
StreamARN := jResp.StringOf('StreamDescription.StreamARN');
StreamCreationTimestamp := jResp.IntOf('StreamDescription.StreamCreationTimestamp');
StreamMode := jResp.StringOf('StreamDescription.StreamModeDetails.StreamMode');
StreamName := jResp.StringOf('StreamDescription.StreamName');
StreamStatus := jResp.StringOf('StreamDescription.StreamStatus');
i := 0;
count_i := jResp.SizeOfArray('StreamDescription.EnhancedMonitoring');
while i < count_i do
  begin
    jResp.I := i;
    j := 0;
    count_j := jResp.SizeOfArray('StreamDescription.EnhancedMonitoring[i].ShardLevelMetrics');
    while j < count_j do
      begin
        jResp.J := j;
        strVal := jResp.StringOf('StreamDescription.EnhancedMonitoring[i].ShardLevelMetrics[j]');
        j := j + 1;
      end;

    i := i + 1;
  end;

i := 0;
count_i := jResp.SizeOfArray('StreamDescription.Shards');
while i < count_i do
  begin
    jResp.I := i;
    AdjacentParentShardId := jResp.StringOf('StreamDescription.Shards[i].AdjacentParentShardId');
    EndingHashKey := jResp.StringOf('StreamDescription.Shards[i].HashKeyRange.EndingHashKey');
    StartingHashKey := jResp.StringOf('StreamDescription.Shards[i].HashKeyRange.StartingHashKey');
    ParentShardId := jResp.StringOf('StreamDescription.Shards[i].ParentShardId');
    EndingSequenceNumber := jResp.StringOf('StreamDescription.Shards[i].SequenceNumberRange.EndingSequenceNumber');
    StartingSequenceNumber := jResp.StringOf('StreamDescription.Shards[i].SequenceNumberRange.StartingSequenceNumber');
    ShardId := jResp.StringOf('StreamDescription.Shards[i].ShardId');
    i := i + 1;
  end;

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

// {
//   "StreamDescription": {
//     "EncryptionType": "string",
//     "EnhancedMonitoring": [
//       {
//         "ShardLevelMetrics": [
//           "string"
//         ]
//       }
//     ],
//     "HasMoreShards": boolean,
//     "KeyId": "string",
//     "RetentionPeriodHours": number,
//     "Shards": [
//       {
//         "AdjacentParentShardId": "string",
//         "HashKeyRange": {
//           "EndingHashKey": "string",
//           "StartingHashKey": "string"
//         },
//         "ParentShardId": "string",
//         "SequenceNumberRange": {
//           "EndingSequenceNumber": "string",
//           "StartingSequenceNumber": "string"
//         },
//         "ShardId": "string"
//       }
//     ],
//     "StreamARN": "string",
//     "StreamCreationTimestamp": number,
//     "StreamModeDetails": {
//       "StreamMode": "string"
//     },
//     "StreamName": "string",
//     "StreamStatus": "string"
//   }
// }