Chilkat Online Tools

DescribeChannel Swift Example

AWS IoT Analytics

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

    let rest = CkoRest()
    var success: Bool

    let authAws = CkoAuthAws()
    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 = "iotanalytics"
    // SetAuthAws causes Chilkat to automatically add the following headers: Authorization, X-Amz-Date
    rest.SetAuthAws(authAws)

    // URL: https://iotanalytics.us-west-2.amazonaws.com/
    // Use the same region as specified above.
    success = rest.Connect("iotanalytics.us-west-2.amazonaws.com", port: 443, tls: true, autoReconnect: true)
    if success != true {
        print("ConnectFailReason: \(rest.ConnectFailReason.intValue)")
        print("\(rest.LastErrorText)")
        return
    }

    rest.AddHeader("Content-Type", value: "application/x-amz-json-1.1")
    rest.AddHeader("X-Amz-Target", value: "DescribeChannel")

    let sbResponseBody = CkoStringBuilder()
    success = rest.FullRequestNoBodySb("GET", uriPath: "/channels/{channelName}", sb: sbResponseBody)
    if success != true {
        print("\(rest.LastErrorText)")
        return
    }

    var respStatusCode: Int = rest.ResponseStatusCode.intValue
    print("response status code = \(respStatusCode)")
    if respStatusCode != 200 {
        print("Response Header:")
        print("\(rest.ResponseHeader)")
        print("Response Body:")
        print("\(sbResponseBody.GetAsString())")
        return
    }

    let jResp = CkoJsonObject()
    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

    var Arn: String? = jResp.StringOf("channel.arn")
    var CreationTime: Int = jResp.IntOf("channel.creationTime").intValue
    var LastMessageArrivalTime: Int = jResp.IntOf("channel.lastMessageArrivalTime").intValue
    var LastUpdateTime: Int = jResp.IntOf("channel.lastUpdateTime").intValue
    var Name: String? = jResp.StringOf("channel.name")
    var NumberOfDays: Int = jResp.IntOf("channel.retentionPeriod.numberOfDays").intValue
    var Unlimited: Int = jResp.IntOf("channel.retentionPeriod.unlimited").intValue
    var Status: String? = jResp.StringOf("channel.status")
    var Bucket: String? = jResp.StringOf("channel.storage.customerManagedS3.bucket")
    var KeyPrefix: String? = jResp.StringOf("channel.storage.customerManagedS3.keyPrefix")
    var RoleArn: String? = jResp.StringOf("channel.storage.customerManagedS3.roleArn")
    var EstimatedOn: Int = jResp.IntOf("statistics.size.estimatedOn").intValue
    var EstimatedSizeInBytes: Int = jResp.IntOf("statistics.size.estimatedSizeInBytes").intValue

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

    // {
    //   "channel": {
    //     "arn": "string",
    //     "creationTime": number,
    //     "lastMessageArrivalTime": number,
    //     "lastUpdateTime": number,
    //     "name": "string",
    //     "retentionPeriod": {
    //       "numberOfDays": number,
    //       "unlimited": boolean
    //     },
    //     "status": "string",
    //     "storage": {
    //       "customerManagedS3": {
    //         "bucket": "string",
    //         "keyPrefix": "string",
    //         "roleArn": "string"
    //       },
    //       "serviceManagedS3": {}
    //     }
    //   },
    //   "statistics": {
    //     "size": {
    //       "estimatedOn": number,
    //       "estimatedSizeInBytes": number
    //     }
    //   }
    // }

}