describe-stream¶

Description¶

Describes the specified Kinesis data stream.

Note

This API has been revised. It’s highly recommended that you use the DescribeStreamSummary API to get a summarized description of the specified Kinesis data stream and the ListShards API to list the shards in a specified data stream and obtain information about each shard.

The information returned includes the stream name, Amazon Resource Name (ARN), creation time, enhanced metric configuration, and shard map. The shard map is an array of shard objects. For each shard object, there is the hash key and sequence number ranges that the shard spans, and the IDs of any earlier shards that played in a role in creating the shard. Every record ingested in the stream is identified by a sequence number, which is assigned when the record is put into the stream.

You can limit the number of shards returned by each call. For more information, see Retrieving Shards from a Stream in the Amazon Kinesis Data Streams Developer Guide .

There are no guarantees about the chronological order shards returned. To process shards in chronological order, use the ID of the parent shard to track the lineage to the oldest shard.

This operation has a limit of 10 transactions per second per account.

Synopsis¶

  describe-stream
--stream-name <value>
[--cli-input-json | --cli-input-yaml]
[--starting-token <value>]
[--page-size <value>]
[--max-items <value>]
[--generate-cli-skeleton <value>]

Options¶

--stream-name (string)

The name of the stream to describe.

--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.

--starting-token (string)

A token to specify where to start paginating. This is the NextToken from a previously truncated response.

For usage examples, see Pagination in the AWS Command Line Interface User Guide .

--page-size (integer)

The size of each page to get in the AWS service call. This does not affect the number of items returned in the command’s output. Setting a smaller page size results in more calls to the AWS service, retrieving fewer items in each call. This can help prevent the AWS service calls from timing out.

For usage examples, see Pagination in the AWS Command Line Interface User Guide .

--max-items (integer)

The total number of items to return in the command’s output. If the total number of items available is more than the value specified, a NextToken is provided in the command’s output. To resume pagination, provide the NextToken value in the starting-token argument of a subsequent command. Do not use the NextToken response element directly outside of the AWS CLI.

For usage examples, see Pagination in the AWS Command Line Interface User Guide .

--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 describe a data stream

The following describe-stream example returns the details of the specified data stream.

aws kinesis describe-stream \
    --stream-name samplestream

Output:

{
    "StreamDescription": {
        "Shards": [
            {
                "ShardId": "shardId-000000000000",
                "HashKeyRange": {
                    "StartingHashKey": "0",
                    "EndingHashKey": "113427455640312821154458202477256070484"
                },
                "SequenceNumberRange": {
                    "StartingSequenceNumber": "49600871682957036442365024926191073437251060580128653314"
                }
            },
            {
                "ShardId": "shardId-000000000001",
                "HashKeyRange": {
                    "StartingHashKey": "113427455640312821154458202477256070485",
                    "EndingHashKey": "226854911280625642308916404954512140969"
                },
                "SequenceNumberRange": {
                    "StartingSequenceNumber": "49600871682979337187563555549332609155523708941634633746"
                }
            },
            {
                "ShardId": "shardId-000000000002",
                "HashKeyRange": {
                    "StartingHashKey": "226854911280625642308916404954512140970",
                    "EndingHashKey": "340282366920938463463374607431768211455"
                },
                "SequenceNumberRange": {
                    "StartingSequenceNumber": "49600871683001637932762086172474144873796357303140614178"
                }
            }
        ],
        "StreamARN": "arn:aws:kinesis:us-west-2:123456789012:stream/samplestream",
        "StreamName": "samplestream",
        "StreamStatus": "ACTIVE",
        "RetentionPeriodHours": 24,
        "EnhancedMonitoring": [
            {
                "ShardLevelMetrics": []
            }
        ],
        "EncryptionType": "NONE",
        "KeyId": null,
        "StreamCreationTimestamp": 1572297168.0
    }
}

For more information, see Creatinga and Managing Streams in the Amazon Kinesis Data Streams Developer Guide.

Output¶

StreamDescription -> (structure)

The current status of the stream, the stream Amazon Resource Name (ARN), an array of shard objects that comprise the stream, and whether there are more shards available.

StreamName -> (string)

The name of the stream being described.

StreamARN -> (string)

The Amazon Resource Name (ARN) for the stream being described.

StreamStatus -> (string)

The current status of the stream being described. The stream status is one of the following states:

CREATING - The stream is being created. Kinesis Data Streams immediately returns and sets StreamStatus to CREATING .

DELETING - The stream is being deleted. The specified stream is in the DELETING state until Kinesis Data Streams completes the deletion.

ACTIVE - The stream exists and is ready for read and write operations or deletion. You should perform read and write operations only on an ACTIVE stream.

UPDATING - Shards in the stream are being merged or split. Read and write operations continue to work while the stream is in the UPDATING state.

StreamModeDetails -> (structure)

Specifies the capacity mode to which you want to set your data stream. Currently, in Kinesis Data Streams, you can choose between an on-demand capacity mode and a provisioned capacity mode for your data streams.

StreamMode -> (string)

Specifies the capacity mode to which you want to set your data stream. Currently, in Kinesis Data Streams, you can choose between an on-demand capacity mode and a provisioned capacity mode for your data streams.

Shards -> (list)

The shards that comprise the stream.

(structure)

A uniquely identified group of data records in a Kinesis data stream.

ShardId -> (string)

The unique identifier of the shard within the stream.

ParentShardId -> (string)

The shard ID of the shard’s parent.

AdjacentParentShardId -> (string)

The shard ID of the shard adjacent to the shard’s parent.

HashKeyRange -> (structure)

The range of possible hash key values for the shard, which is a set of ordered contiguous positive integers.

StartingHashKey -> (string)

The starting hash key of the hash key range.

EndingHashKey -> (string)

The ending hash key of the hash key range.

SequenceNumberRange -> (structure)

The range of possible sequence numbers for the shard.

StartingSequenceNumber -> (string)

The starting sequence number for the range.

EndingSequenceNumber -> (string)

The ending sequence number for the range. Shards that are in the OPEN state have an ending sequence number of null .

HasMoreShards -> (boolean)

If set to true , more shards in the stream are available to describe.

RetentionPeriodHours -> (integer)

The current retention period, in hours. Minimum value of 24. Maximum value of 168.

StreamCreationTimestamp -> (timestamp)

The approximate time that the stream was created.

EnhancedMonitoring -> (list)

Represents the current enhanced monitoring settings of the stream.

(structure)

Represents enhanced metrics types.

ShardLevelMetrics -> (list)

List of shard-level metrics.

The following are the valid shard-level metrics. The value “ALL ” enhances every metric.

IncomingBytes

IncomingRecords

OutgoingBytes

OutgoingRecords

WriteProvisionedThroughputExceeded

ReadProvisionedThroughputExceeded

IteratorAgeMilliseconds

ALL

For more information, see Monitoring the Amazon Kinesis Data Streams Service with Amazon CloudWatch in the Amazon Kinesis Data Streams Developer Guide .

(string)

EncryptionType -> (string)

The server-side encryption type used on the stream. This parameter can be one of the following values:

NONE : Do not encrypt the records in the stream.

KMS : Use server-side encryption on the records in the stream using a customer-managed Amazon Web Services KMS key.

KeyId -> (string)

The GUID for the customer-managed Amazon Web Services KMS key to use for encryption. This value can be a globally unique identifier, a fully specified ARN to either an alias or a key, or an alias name prefixed by “alias/”.You can also use a master key owned by Kinesis Data Streams by specifying the alias aws/kinesis .

Key ARN example: arn:aws:kms:us-east-1:123456789012:key/12345678-1234-1234-1234-123456789012

Alias ARN example: arn:aws:kms:us-east-1:123456789012:alias/MyAliasName

Globally unique key ID example: 12345678-1234-1234-1234-123456789012

Alias name example: alias/MyAliasName

Master key owned by Kinesis Data Streams: alias/aws/kinesis

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