CreateLedger - Amazon Quantum Ledger Database (Amazon QLDB)

CreateLedger

Creates a new ledger in your AWS account in the current Region.

Request Syntax

POST /ledgers HTTP/1.1 Content-type: application/json { "DeletionProtection": boolean, "KmsKey": "string", "Name": "string", "PermissionsMode": "string", "Tags": { "string" : "string" } }

URI Request Parameters

The request does not use any URI parameters.

Request Body

The request accepts the following data in JSON format.

DeletionProtection

The flag that prevents a ledger from being deleted by any user. If not provided on ledger creation, this feature is enabled (true) by default.

If deletion protection is enabled, you must first disable it before you can delete the ledger. You can disable it by calling the UpdateLedger operation to set the flag to false.

Type: Boolean

Required: No

KmsKey

The key in AWS Key Management Service (AWS KMS) to use for encryption of data at rest in the ledger. For more information, see Encryption at rest in the Amazon QLDB Developer Guide.

Use one of the following options to specify this parameter:

  • AWS_OWNED_KMS_KEY: Use an AWS KMS key that is owned and managed by AWS on your behalf.

  • Undefined: By default, use an AWS owned KMS key.

  • A valid symmetric customer managed KMS key: Use the specified KMS key in your account that you create, own, and manage.

    Amazon QLDB does not support asymmetric keys. For more information, see Using symmetric and asymmetric keys in the AWS Key Management Service Developer Guide.

To specify a customer managed KMS key, you can use its key ID, Amazon Resource Name (ARN), alias name, or alias ARN. When using an alias name, prefix it with "alias/". To specify a key in a different AWS account, you must use the key ARN or alias ARN.

For example:

  • Key ID: 1234abcd-12ab-34cd-56ef-1234567890ab

  • Key ARN: arn:aws:kms:us-east-2:111122223333:key/1234abcd-12ab-34cd-56ef-1234567890ab

  • Alias name: alias/ExampleAlias

  • Alias ARN: arn:aws:kms:us-east-2:111122223333:alias/ExampleAlias

For more information, see Key identifiers (KeyId) in the AWS Key Management Service Developer Guide.

Type: String

Length Constraints: Maximum length of 1600.

Required: No

Name

The name of the ledger that you want to create. The name must be unique among all of the ledgers in your AWS account in the current Region.

Naming constraints for ledger names are defined in Quotas in Amazon QLDB in the Amazon QLDB Developer Guide.

Type: String

Length Constraints: Minimum length of 1. Maximum length of 32.

Pattern: (?!^.*--)(?!^[0-9]+$)(?!^-)(?!.*-$)^[A-Za-z0-9-]+$

Required: Yes

PermissionsMode

The permissions mode to assign to the ledger that you want to create. This parameter can have one of the following values:

  • ALLOW_ALL: A legacy permissions mode that enables access control with API-level granularity for ledgers.

    This mode allows users who have the SendCommand API permission for this ledger to run all PartiQL commands (hence, ALLOW_ALL) on any tables in the specified ledger. This mode disregards any table-level or command-level IAM permissions policies that you create for the ledger.

  • STANDARD: (Recommended) A permissions mode that enables access control with finer granularity for ledgers, tables, and PartiQL commands.

    By default, this mode denies all user requests to run any PartiQL commands on any tables in this ledger. To allow PartiQL commands to run, you must create IAM permissions policies for specific table resources and PartiQL actions, in addition to the SendCommand API permission for the ledger. For information, see Getting started with the standard permissions mode in the Amazon QLDB Developer Guide.

Note

We strongly recommend using the STANDARD permissions mode to maximize the security of your ledger data.

Type: String

Valid Values: ALLOW_ALL | STANDARD

Required: Yes

Tags

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

Type: String to string map

Map Entries: Minimum number of 0 items. Maximum number of 200 items.

Key Length Constraints: Minimum length of 1. Maximum length of 128.

Value Length Constraints: Minimum length of 0. Maximum length of 256.

Required: No

Response Syntax

HTTP/1.1 200 Content-type: application/json { "Arn": "string", "CreationDateTime": number, "DeletionProtection": boolean, "KmsKeyArn": "string", "Name": "string", "PermissionsMode": "string", "State": "string" }

Response Elements

If the action is successful, the service sends back an HTTP 200 response.

The following data is returned in JSON format by the service.

Arn

The Amazon Resource Name (ARN) for the ledger.

Type: String

Length Constraints: Minimum length of 20. Maximum length of 1600.

CreationDateTime

The date and time, in epoch time format, when the ledger was created. (Epoch time format is the number of seconds elapsed since 12:00:00 AM January 1, 1970 UTC.)

Type: Timestamp

DeletionProtection

The flag that prevents a ledger from being deleted by any user. If not provided on ledger creation, this feature is enabled (true) by default.

If deletion protection is enabled, you must first disable it before you can delete the ledger. You can disable it by calling the UpdateLedger operation to set the flag to false.

Type: Boolean

KmsKeyArn

The ARN of the customer managed KMS key that the ledger uses for encryption at rest. If this parameter is undefined, the ledger uses an AWS owned KMS key for encryption.

Type: String

Length Constraints: Minimum length of 20. Maximum length of 1600.

Name

The name of the ledger.

Type: String

Length Constraints: Minimum length of 1. Maximum length of 32.

Pattern: (?!^.*--)(?!^[0-9]+$)(?!^-)(?!.*-$)^[A-Za-z0-9-]+$

PermissionsMode

The permissions mode of the ledger that you created.

Type: String

Valid Values: ALLOW_ALL | STANDARD

State

The current status of the ledger.

Type: String

Valid Values: CREATING | ACTIVE | DELETING | DELETED

Errors

For information about the errors that are common to all actions, see Common Errors.

InvalidParameterException

One or more parameters in the request aren't valid.

HTTP Status Code: 400

LimitExceededException

You have reached the limit on the maximum number of resources allowed.

HTTP Status Code: 400

ResourceAlreadyExistsException

The specified resource already exists.

HTTP Status Code: 409

ResourceInUseException

The specified resource can't be modified at this time.

HTTP Status Code: 409

See Also

For more information about using this API in one of the language-specific AWS SDKs, see the following: