describe_channel

describe_channel(**kwargs)

Retrieves information about a channel.

See also: AWS API Documentation

Request Syntax

response = client.describe_channel(
    channelName='string',
    includeStatistics=True|False
)

Parameters

• channelName (string) --

  [REQUIRED]

  The name of the channel whose information is retrieved.

• includeStatistics (boolean) -- If true, additional statistical information about the channel is included in the response. This feature can't be used with a channel whose S3 storage is customer-managed.

Return type

dict

Returns

Response Syntax

{
    'channel': {
        'name': 'string',
        'storage': {
            'serviceManagedS3': {},
            'customerManagedS3': {
                'bucket': 'string',
                'keyPrefix': 'string',
                'roleArn': 'string'
            }
        },
        'arn': 'string',
        'status': 'CREATING'|'ACTIVE'|'DELETING',
        'retentionPeriod': {
            'unlimited': True|False,
            'numberOfDays': 123
        },
        'creationTime': datetime(2015, 1, 1),
        'lastUpdateTime': datetime(2015, 1, 1),
        'lastMessageArrivalTime': datetime(2015, 1, 1)
    },
    'statistics': {
        'size': {
            'estimatedSizeInBytes': 123.0,
            'estimatedOn': datetime(2015, 1, 1)
        }
    }
}

Response Structure

• (dict) --

  • channel (dict) --

    An object that contains information about the channel.

    • name (string) --

      The name of the channel.

    • storage (dict) --

      Where channel data is stored. You can choose one of serviceManagedS3 or customerManagedS3 storage. If not specified, the default is serviceManagedS3 . You can't change this storage option after the channel is created.

      • serviceManagedS3 (dict) --

        Used to store channel data in an S3 bucket managed by IoT Analytics. You can't change the choice of S3 storage after the data store is created.

      • customerManagedS3 (dict) --

        Used to store channel data in an S3 bucket that you manage. If customer managed storage is selected, the retentionPeriod parameter is ignored. You can't change the choice of S3 storage after the data store is created.

        • bucket (string) --

          The name of the S3 bucket in which channel data is stored.

        • keyPrefix (string) --

          (Optional) The prefix used to create the keys of the channel data objects. Each object in an S3 bucket has a key that is its unique identifier in the bucket. Each object in a bucket has exactly one key. The prefix must end with a forward slash (/).

        • roleArn (string) --

          The ARN of the role that grants IoT Analytics permission to interact with your Amazon S3 resources.

    • arn (string) --

      The ARN of the channel.

    • status (string) --

      The status of the channel.

    • retentionPeriod (dict) --

      How long, in days, message data is kept for the channel.

      • unlimited (boolean) --

        If true, message data is kept indefinitely.

      • numberOfDays (integer) --

        The number of days that message data is kept. The unlimited parameter must be false.

    • creationTime (datetime) --

      When the channel was created.

    • lastUpdateTime (datetime) --

      When the channel was last updated.

    • lastMessageArrivalTime (datetime) --

      The last time when a new message arrived in the channel.

      IoT Analytics updates this value at most once per minute for one channel. Hence, the lastMessageArrivalTime value is an approximation.

      This feature only applies to messages that arrived in the data store after October 23, 2020.

  • statistics (dict) --

    Statistics about the channel. Included if the includeStatistics parameter is set to true in the request.

    • size (dict) --

      The estimated size of the channel.

      • estimatedSizeInBytes (float) --

        The estimated size of the resource, in bytes.

      • estimatedOn (datetime) --

        The time when the estimate of the size of the resource was made.

Exceptions

• IoTAnalytics.Client.exceptions.InvalidRequestException
• IoTAnalytics.Client.exceptions.ResourceNotFoundException
• IoTAnalytics.Client.exceptions.InternalFailureException
• IoTAnalytics.Client.exceptions.ServiceUnavailableException
• IoTAnalytics.Client.exceptions.ThrottlingException