[ aws . kinesis ]

list-shards

Description

Lists the shards in a stream and provides information about each shard. This operation has a limit of 100 transactions per second per data stream.

Warning

This API is a new operation that is used by the Amazon Kinesis Client Library (KCL). If you have a fine-grained IAM policy that only allows specific operations, you must update your policy to allow calls to this API. For more information, see Controlling Access to Amazon Kinesis Data Streams Resources Using IAM .

See also: AWS API Documentation

See ‘aws help’ for descriptions of global parameters.

list-shards is a paginated operation. Multiple API calls may be issued in order to retrieve the entire data set of results. You can disable pagination by providing the --no-paginate argument. When using --output text and the --query argument on a paginated response, the --query argument must extract data from the results of the following query expressions: Shards

Synopsis

  list-shards
[--stream-name <value>]
[--exclusive-start-shard-id <value>]
[--stream-creation-timestamp <value>]
[--cli-input-json | --cli-input-yaml]
[--starting-token <value>]
[--page-size <value>]
[--max-items <value>]
[--generate-cli-skeleton <value>]
[--cli-auto-prompt <value>]

Options

--stream-name (string)

The name of the data stream whose shards you want to list.

You cannot specify this parameter if you specify the NextToken parameter.

--exclusive-start-shard-id (string)

Specify this parameter to indicate that you want to list the shards starting with the shard whose ID immediately follows ExclusiveStartShardId .

If you don’t specify this parameter, the default behavior is for ListShards to list the shards starting with the first one in the stream.

You cannot specify this parameter if you specify NextToken .

--stream-creation-timestamp (timestamp)

Specify this input parameter to distinguish data streams that have the same name. For example, if you create a data stream and then delete it, and you later create another data stream with the same name, you can use this input parameter to specify which of the two streams you want to list the shards for.

You cannot specify this parameter if you specify the NextToken parameter.

--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.

--cli-auto-prompt (boolean) Automatically prompt for CLI input parameters.

See ‘aws help’ for descriptions of global parameters.

Examples

To list shards in a data stream

The following list-shards example lists all shards in the specified stream starting with the shard whose ID immediately follows the specified exclusive-start-shard-id of shardId-000000000000.

aws kinesis list-shards \
    --stream-name samplestream \
    --exclusive-start-shard-id shardId-000000000000

Output:

{
    "Shards": [
        {
            "ShardId": "shardId-000000000001",
            "HashKeyRange": {
                "StartingHashKey": "113427455640312821154458202477256070485",
                "EndingHashKey": "226854911280625642308916404954512140969"
            },
            "SequenceNumberRange": {
                "StartingSequenceNumber": "49600871682979337187563555549332609155523708941634633746"
            }
        },
        {
            "ShardId": "shardId-000000000002",
            "HashKeyRange": {
                "StartingHashKey": "226854911280625642308916404954512140970",
                "EndingHashKey": "340282366920938463463374607431768211455"
            },
            "SequenceNumberRange": {
                "StartingSequenceNumber": "49600871683001637932762086172474144873796357303140614178"
            }
        }
    ]
}

For more information, see Listing Shards in the Amazon Kinesis Data Streams Developer Guide.

Output

Shards -> (list)

An array of JSON objects. Each object represents one shard and specifies the IDs of the shard, the shard’s parent, and the shard that’s adjacent to the shard’s parent. Each object also contains the starting and ending hash keys and the starting and ending sequence numbers for the shard.

(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 .

NextToken -> (string)

When the number of shards in the data stream is greater than the default value for the MaxResults parameter, or if you explicitly specify a value for MaxResults that is less than the number of shards in the data stream, the response includes a pagination token named NextToken . You can specify this NextToken value in a subsequent call to ListShards to list the next set of shards. For more information about the use of this pagination token when calling the ListShards operation, see ListShardsInput$NextToken .

Warning

Tokens expire after 300 seconds. When you obtain a value for NextToken in the response to a call to ListShards , you have 300 seconds to use that value. If you specify an expired token in a call to ListShards , you get ExpiredNextTokenException .