Chilkat Online Tools

DescribeStream Objective-C Example

Amazon Kinesis Video Streams

#import <CkoRest.h>
#import <CkoAuthAws.h>
#import <CkoJsonObject.h>
#import <CkoStringBuilder.h>
#import <NSString.h>

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

CkoRest *rest = [[CkoRest alloc] init];
BOOL success;

CkoAuthAws *authAws = [[CkoAuthAws alloc] init];
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];

// URL: https://kinesisvideo.us-west-2.amazonaws.com/
// Use the same region as specified above.
success = [rest Connect: @"kinesisvideo.us-west-2.amazonaws.com" port: [NSNumber numberWithInt: 443] tls: YES autoReconnect: YES];
if (success != YES) {
    NSLog(@"%@%d",@"ConnectFailReason: ",[rest.ConnectFailReason intValue]);
    NSLog(@"%@",rest.LastErrorText);
    return;
}

// 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

CkoJsonObject *json = [[CkoJsonObject alloc] init];
[json UpdateString: @"ExclusiveStartShardId" value: @"string"];
[json UpdateInt: @"Limit" value: [NSNumber numberWithInt: 123]];
[json UpdateString: @"StreamName" value: @"string"];

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

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

[rest AddHeader: @"Content-Type" value: @"application/x-amz-json-1.1"];
[rest AddHeader: @"X-Amz-Target" value: @"DescribeStream"];

CkoStringBuilder *sbRequestBody = [[CkoStringBuilder alloc] init];
[json EmitSb: sbRequestBody];
CkoStringBuilder *sbResponseBody = [[CkoStringBuilder alloc] init];
success = [rest FullRequestSb: @"POST" uriPath: @"/describeStream" requestBody: sbRequestBody responseBody: sbResponseBody];
if (success != YES) {
    NSLog(@"%@",rest.LastErrorText);
    return;
}

int respStatusCode = [rest.ResponseStatusCode intValue];
NSLog(@"%@%d",@"response status code = ",respStatusCode);
if (respStatusCode != 200) {
    NSLog(@"%@",@"Response Header:");
    NSLog(@"%@",rest.ResponseHeader);
    NSLog(@"%@",@"Response Body:");
    NSLog(@"%@",[sbResponseBody GetAsString]);
    return;
}

CkoJsonObject *jResp = [[CkoJsonObject alloc] init];
[jResp LoadSb: 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

int j;
int count_j;
NSString *strVal = 0;
NSString *AdjacentParentShardId = 0;
NSString *EndingHashKey = 0;
NSString *StartingHashKey = 0;
NSString *ParentShardId = 0;
NSString *EndingSequenceNumber = 0;
NSString *StartingSequenceNumber = 0;
NSString *ShardId = 0;

NSString *EncryptionType = [jResp StringOf: @"StreamDescription.EncryptionType"];
int HasMoreShards = [[jResp IntOf: @"StreamDescription.HasMoreShards"] intValue];
NSString *KeyId = [jResp StringOf: @"StreamDescription.KeyId"];
int RetentionPeriodHours = [[jResp IntOf: @"StreamDescription.RetentionPeriodHours"] intValue];
NSString *StreamARN = [jResp StringOf: @"StreamDescription.StreamARN"];
int StreamCreationTimestamp = [[jResp IntOf: @"StreamDescription.StreamCreationTimestamp"] intValue];
NSString *StreamMode = [jResp StringOf: @"StreamDescription.StreamModeDetails.StreamMode"];
NSString *StreamName = [jResp StringOf: @"StreamDescription.StreamName"];
NSString *StreamStatus = [jResp StringOf: @"StreamDescription.StreamStatus"];
int i = 0;
int count_i = [[jResp SizeOfArray: @"StreamDescription.EnhancedMonitoring"] intValue];
while (i < count_i) {
    jResp.I = [NSNumber numberWithInt: i];
    j = 0;
    count_j = [[jResp SizeOfArray: @"StreamDescription.EnhancedMonitoring[i].ShardLevelMetrics"] intValue];
    while (j < count_j) {
        jResp.J = [NSNumber numberWithInt: j];
        strVal = [jResp StringOf: @"StreamDescription.EnhancedMonitoring[i].ShardLevelMetrics[j]"];
        j = j + 1;
    }

    i = i + 1;
}

i = 0;
count_i = [[jResp SizeOfArray: @"StreamDescription.Shards"] intValue];
while (i < count_i) {
    jResp.I = [NSNumber numberWithInt: 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;
}

// 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"
//   }
// }