describe-datastore¶

Description¶

Retrieves information about a data store.

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 can’t 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 in a data store is stored.. You can choose serviceManagedS3 storage, customerManagedS3 storage, or iotSiteWiseMultiLayerStorage storage. The default is serviceManagedS3 . You can’t change the choice of Amazon S3 storage after your data store is created.

serviceManagedS3 -> (structure)

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

customerManagedS3 -> (structure)

S3-customer-managed; When you choose customer-managed storage, the retentionPeriod parameter is ignored. You can’t change the choice of Amazon S3 storage after your data store is created.

bucket -> (string)

The name of the Amazon S3 bucket where your data is stored.

keyPrefix -> (string)

(Optional) The prefix used to create the keys of the data store data objects. Each object in an Amazon 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.

iotSiteWiseMultiLayerStorage -> (structure)

Used to store data used by IoT SiteWise in an Amazon S3 bucket that you manage. You can’t change the choice of Amazon S3 storage after your data store is created.

customerManagedS3Storage -> (structure)

Used to store data used by IoT SiteWise in an Amazon S3 bucket that you manage.

bucket -> (string)

The name of the Amazon S3 bucket where your data is stored.

keyPrefix -> (string)

(Optional) The prefix used to create the keys of the data store data objects. Each object in an Amazon 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 (/).

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.

IoT Analytics updates this value at most once per minute for Amazon Simple Storage Service 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. 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 Glue Developer Guide .

datastorePartitions -> (structure)

Contains information about the partition dimensions in a data store.

partitions -> (list)

A list of partition dimensions in a data store.

(structure)

A single dimension to partition a data store. The dimension must be an AttributePartition or a TimestampPartition .

attributePartition -> (structure)

A partition dimension defined by an attributeName .

attributeName -> (string)

The name of the attribute that defines a partition dimension.

timestampPartition -> (structure)

A partition dimension defined by a timestamp attribute.

attributeName -> (string)

The attribute name of the partition defined by a timestamp.

timestampFormat -> (string)

The timestamp format of a partition defined by a timestamp. The default format is seconds since epoch (January 1, 1970 at midnight UTC time).

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.

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