stream-journal-to-kinesis¶

Description¶

Creates a journal stream for a given Amazon QLDB ledger. The stream captures every document revision that is committed to the ledger’s journal and delivers the data to a specified Amazon Kinesis Data Streams resource.

Synopsis¶

  stream-journal-to-kinesis
--ledger-name <value>
--role-arn <value>
[--tags <value>]
--inclusive-start-time <value>
[--exclusive-end-time <value>]
--kinesis-configuration <value>
--stream-name <value>
[--cli-input-json | --cli-input-yaml]
[--generate-cli-skeleton <value>]

Options¶

--ledger-name (string)

The name of the ledger.

--role-arn (string)

The Amazon Resource Name (ARN) of the IAM role that grants QLDB permissions for a journal stream to write data records to a Kinesis Data Streams resource.

To pass a role to QLDB when requesting a journal stream, you must have permissions to perform the iam:PassRole action on the IAM role resource. This is required for all journal stream requests.

--tags (map)

The key-value pairs to add as tags to the stream that you want to create. Tag keys are case sensitive. Tag values are case sensitive and can be null.

key -> (string)

value -> (string)

Shorthand Syntax:

KeyName1=string,KeyName2=string

JSON Syntax:

{"string": "string"
  ...}

--inclusive-start-time (timestamp)

The inclusive start date and time from which to start streaming journal data. This parameter must be in ISO 8601 date and time format and in Universal Coordinated Time (UTC). For example: 2019-06-13T21:36:34Z .

The InclusiveStartTime cannot be in the future and must be before ExclusiveEndTime .

If you provide an InclusiveStartTime that is before the ledger’s CreationDateTime , QLDB effectively defaults it to the ledger’s CreationDateTime .

--exclusive-end-time (timestamp)

The exclusive date and time that specifies when the stream ends. If you don’t define this parameter, the stream runs indefinitely until you cancel it.

The ExclusiveEndTime must be in ISO 8601 date and time format and in Universal Coordinated Time (UTC). For example: 2019-06-13T21:36:34Z .

--kinesis-configuration (structure)

The configuration settings of the Kinesis Data Streams destination for your stream request.

StreamArn -> (string)

The Amazon Resource Name (ARN) of the Kinesis Data Streams resource.

AggregationEnabled -> (boolean)

Enables QLDB to publish multiple data records in a single Kinesis Data Streams record, increasing the number of records sent per API call.

This option is enabled by default. Record aggregation has important implications for processing records and requires de-aggregation in your stream consumer. To learn more, see KPL Key Concepts and Consumer De-aggregation in the Amazon Kinesis Data Streams Developer Guide .

Shorthand Syntax:

StreamArn=string,AggregationEnabled=boolean

JSON Syntax:

{
  "StreamArn": "string",
  "AggregationEnabled": true|false
}

--stream-name (string)

The name that you want to assign to the QLDB journal stream. User-defined names can help identify and indicate the purpose of a stream.

Your stream name must be unique among other active streams for a given ledger. Stream names have the same naming constraints as ledger names, as defined in Quotas in Amazon QLDB in the Amazon QLDB Developer Guide .

--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. The generated JSON skeleton is not stable between versions of the AWS CLI and there are no backwards compatibility guarantees in the JSON skeleton generated.

See ‘aws help’ for descriptions of global parameters.

Examples¶

Note

To use the following examples, you must have the AWS CLI installed and configured. See the Getting started guide in the AWS CLI User Guide for more information.

Unless otherwise stated, all examples have unix-like quotation rules. These examples will need to be adapted to your terminal’s quoting rules. See Using quotation marks with strings in the AWS CLI User Guide .

Example 1: To stream journal data to Kinesis Data Streams using input files

The following stream-journal-to-kinesis example creates a stream of journal data within a specified date and time range from a ledger with the name myExampleLedger. The stream sends the data to a specified Amazon Kinesis data stream.

aws qldb stream-journal-to-kinesis \
    --ledger-name myExampleLedger \
    --inclusive-start-time 2020-05-29T00:00:00Z \
    --exclusive-end-time 2020-05-29T23:59:59Z \
    --role-arn arn:aws:iam::123456789012:role/my-kinesis-stream-role \
    --kinesis-configuration file://my-kinesis-config.json \
    --stream-name myExampleLedger-stream

Contents of my-kinesis-config.json:

{
    "StreamArn": "arn:aws:kinesis:us-east-1:123456789012:stream/stream-for-qldb",
    "AggregationEnabled": true
}

Output:

{
    "StreamId": "7ISCkqwe4y25YyHLzYUFAf"
}

For more information, see Streaming journal data from Amazon QLDB in the Amazon QLDB Developer Guide.

Example 2: To stream journal data to Kinesis Data Streams using shorthand syntax

The following stream-journal-to-kinesis example creates a stream of journal data within a specified date and time range from a ledger with the name myExampleLedger. The stream sends the data to a specified Amazon Kinesis data stream.

aws qldb stream-journal-to-kinesis \
    --ledger-name myExampleLedger \
    --inclusive-start-time 2020-05-29T00:00:00Z \
    --exclusive-end-time 2020-05-29T23:59:59Z \
    --role-arn arn:aws:iam::123456789012:role/my-kinesis-stream-role \
    --stream-name myExampleLedger-stream \
    --kinesis-configuration StreamArn=arn:aws:kinesis:us-east-1:123456789012:stream/stream-for-qldb,AggregationEnabled=true

Output:

{
    "StreamId": "7ISCkqwe4y25YyHLzYUFAf"
}

For more information, see Streaming journal data from Amazon QLDB in the Amazon QLDB Developer Guide.

Output¶

StreamId -> (string)

The UUID (represented in Base62-encoded text) that QLDB assigns to each QLDB journal stream.

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