[ aws . iotanalytics ]

describe-datastore

Description

Retrieves information about a data store.

See also: AWS API Documentation

See ‘aws help’ for descriptions of global parameters.

Synopsis

  describe-datastore
--datastore-name <value>
[--include-statistics | --no-include-statistics]
[--cli-input-json | --cli-input-yaml]
[--generate-cli-skeleton <value>]

Options

--datastore-name (string)

The name of the data store

--include-statistics | --no-include-statistics (boolean)

If true, additional statistical information about the data store is included in the response. This feature cannot be used with a data store whose S3 storage is customer-managed.

--cli-input-json | --cli-input-yaml (string) Reads arguments from the JSON string provided. The JSON string follows the format provided by --generate-cli-skeleton. If other arguments are provided on the command line, those values will override the JSON-provided values. It is not possible to pass arbitrary binary values using a JSON-provided value as the string will be taken literally. This may not be specified along with --cli-input-yaml.

--generate-cli-skeleton (string) Prints a JSON skeleton to standard output without sending an API request. If provided with no value or the value input, prints a sample input JSON that can be used as an argument for --cli-input-json. Similarly, if provided yaml-input it will print a sample input YAML that can be used with --cli-input-yaml. If provided with the value output, it validates the command inputs and returns a sample output JSON for that command.

See ‘aws help’ for descriptions of global parameters.

Examples

To retrieve information about a data store

The following describe-datastore example displays details, including statistics, for the specified data store.

aws iotanalytics describe-datastore \
    --datastore-name mydatastore \
    --include-statistics

Output:

{
    "datastore": {
        "status": "ACTIVE",
        "name": "mydatastore",
        "lastUpdateTime": 1557858971.02,
        "creationTime": 1557858971.02,
        "retentionPeriod": {
            "unlimited": true
        },
        "arn": "arn:aws:iotanalytics:us-west-2:123456789012:datastore/mydatastore"
    },
    "statistics": {
        "size": {
            "estimatedSizeInBytes": 397.0,
            "estimatedOn": 1561592040.0
        }
    }
}

For more information, see DescribeDatastore in the AWS IoT Analytics API Reference.

Output

datastore -> (structure)

Information about the data store.

name -> (string)

The name of the data store.

storage -> (structure)

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

serviceManagedS3 -> (structure)

Use this to store data store data in an S3 bucket managed by AWS IoT Analytics. You cannot change the choice of service-managed or customer-managed S3 storage after the data store is created.

customerManagedS3 -> (structure)

Use this to store data store data in an S3 bucket that you manage. When customer managed storage is selected, the retentionPeriod parameter is ignored. The choice of service-managed or customer-managed S3 storage cannot be changed after creation of the data store.

bucket -> (string)

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

keyPrefix -> (string)

Optional. The prefix used to create the keys of the data store 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 AWS IoT Analytics permission to interact with your Amazon S3 resources.

arn -> (string)

The ARN of the data store.

status -> (string)

The status of a data store:

CREATING

The data store is being created.

ACTIVE

The data store has been created and can be used.

DELETING

The data store is being deleted.

retentionPeriod -> (structure)

How long, in days, message data is kept for the data store. When customerManagedS3 storage is selected, this parameter is ignored.

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 -> (timestamp)

When the data store was created.

lastUpdateTime -> (timestamp)

The last time the data store was updated.

lastMessageArrivalTime -> (timestamp)

The last time when a new message arrived in the data store.

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

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

fileFormatConfiguration -> (structure)

Contains the configuration information of file formats. AWS IoT Analytics data stores support JSON and Parquet .

The default file format is JSON. You can specify only one format.

You can’t change the file format after you create the data store.

jsonConfiguration -> (structure)

Contains the configuration information of the JSON format.

parquetConfiguration -> (structure)

Contains the configuration information of the Parquet format.

schemaDefinition -> (structure)

Information needed to define a schema.

columns -> (list)

Specifies one or more columns that store your data.

Each schema can have up to 100 columns. Each column can have up to 100 nested types

(structure)

Contains information about a column that stores your data.

name -> (string)

The name of the column.

type -> (string)

The type of data. For more information about the supported data types, see Common data types in the AWS Glue Developer Guide .

statistics -> (structure)

Additional statistical information about the data store. Included if the includeStatistics parameter is set to true in the request.

size -> (structure)

The estimated size of the data store.

estimatedSizeInBytes -> (double)

The estimated size of the resource, in bytes.

estimatedOn -> (timestamp)

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