CfnLedger

class aws_cdk.aws_qldb.CfnLedger(scope, id, *, permissions_mode, deletion_protection=None, kms_key=None, name=None, tags=None)

Bases: aws_cdk.core.CfnResource

A CloudFormation AWS::QLDB::Ledger.

The AWS::QLDB::Ledger resource specifies a new Amazon Quantum Ledger Database (Amazon QLDB) ledger in your AWS account . Amazon QLDB is a fully managed ledger database that provides a transparent, immutable, and cryptographically verifiable transaction log owned by a central trusted authority. You can use QLDB to track all application data changes, and maintain a complete and verifiable history of changes over time.

For more information, see CreateLedger in the Amazon QLDB API Reference .

CloudformationResource

AWS::QLDB::Ledger

Link

http://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-resource-qldb-ledger.html

ExampleMetadata

fixture=_generated

Example:

# The code below shows an example of how to instantiate this type.
# The values are placeholders you should change.
import aws_cdk.aws_qldb as qldb

cfn_ledger = qldb.CfnLedger(self, "MyCfnLedger",
    permissions_mode="permissionsMode",

    # the properties below are optional
    deletion_protection=False,
    kms_key="kmsKey",
    name="name",
    tags=[CfnTag(
        key="key",
        value="value"
    )]
)

Create a new AWS::QLDB::Ledger.

Parameters
  • scope (Construct) –

    • scope in which this resource is defined.

  • id (str) –

    • scoped id of the resource.

  • permissions_mode (str) – 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 . .. epigraph:: We strongly recommend using the STANDARD permissions mode to maximize the security of your ledger data.

  • deletion_protection (Union[bool, IResolvable, None]) – Specifies whether the ledger is protected from being deleted by any user. If not defined during 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 parameter to false .

  • kms_key (Optional[str]) – 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 symmetric encryption 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 .

  • name (Optional[str]) – 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 .

  • tags (Optional[Sequence[Union[CfnTag, Dict[str, Any]]]]) – An array of key-value pairs to apply to this resource. For more information, see Tag .

Methods

add_deletion_override(path)

Syntactic sugar for addOverride(path, undefined).

Parameters

path (str) – The path of the value to delete.

Return type

None

add_depends_on(target)

Indicates that this resource depends on another resource and cannot be provisioned unless the other resource has been successfully provisioned.

This can be used for resources across stacks (or nested stack) boundaries and the dependency will automatically be transferred to the relevant scope.

Parameters

target (CfnResource) –

Return type

None

add_metadata(key, value)

Add a value to the CloudFormation Resource Metadata.

Parameters
  • key (str) –

  • value (Any) –

See

https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/metadata-section-structure.html

Note that this is a different set of metadata from CDK node metadata; this metadata ends up in the stack template under the resource, whereas CDK node metadata ends up in the Cloud Assembly.

Return type

None

add_override(path, value)

Adds an override to the synthesized CloudFormation resource.

To add a property override, either use addPropertyOverride or prefix path with “Properties.” (i.e. Properties.TopicName).

If the override is nested, separate each nested level using a dot (.) in the path parameter. If there is an array as part of the nesting, specify the index in the path.

To include a literal . in the property name, prefix with a \. In most programming languages you will need to write this as "\\." because the \ itself will need to be escaped.

For example:

cfn_resource.add_override("Properties.GlobalSecondaryIndexes.0.Projection.NonKeyAttributes", ["myattribute"])
cfn_resource.add_override("Properties.GlobalSecondaryIndexes.1.ProjectionType", "INCLUDE")

would add the overrides Example:

"Properties": {
   "GlobalSecondaryIndexes": [
     {
       "Projection": {
         "NonKeyAttributes": [ "myattribute" ]
         ...
       }
       ...
     },
     {
       "ProjectionType": "INCLUDE"
       ...
     },
   ]
   ...
}

The value argument to addOverride will not be processed or translated in any way. Pass raw JSON values in here with the correct capitalization for CloudFormation. If you pass CDK classes or structs, they will be rendered with lowercased key names, and CloudFormation will reject the template.

Parameters
  • path (str) –

    • The path of the property, you can use dot notation to override values in complex types. Any intermdediate keys will be created as needed.

  • value (Any) –

    • The value. Could be primitive or complex.

Return type

None

add_property_deletion_override(property_path)

Adds an override that deletes the value of a property from the resource definition.

Parameters

property_path (str) – The path to the property.

Return type

None

add_property_override(property_path, value)

Adds an override to a resource property.

Syntactic sugar for addOverride("Properties.<...>", value).

Parameters
  • property_path (str) – The path of the property.

  • value (Any) – The value.

Return type

None

apply_removal_policy(policy=None, *, apply_to_update_replace_policy=None, default=None)

Sets the deletion policy of the resource based on the removal policy specified.

The Removal Policy controls what happens to this resource when it stops being managed by CloudFormation, either because you’ve removed it from the CDK application or because you’ve made a change that requires the resource to be replaced.

The resource can be deleted (RemovalPolicy.DESTROY), or left in your AWS account for data recovery and cleanup later (RemovalPolicy.RETAIN).

Parameters
  • policy (Optional[RemovalPolicy]) –

  • apply_to_update_replace_policy (Optional[bool]) – Apply the same deletion policy to the resource’s “UpdateReplacePolicy”. Default: true

  • default (Optional[RemovalPolicy]) – The default policy to apply in case the removal policy is not defined. Default: - Default value is resource specific. To determine the default value for a resoure, please consult that specific resource’s documentation.

Return type

None

get_att(attribute_name)

Returns a token for an runtime attribute of this resource.

Ideally, use generated attribute accessors (e.g. resource.arn), but this can be used for future compatibility in case there is no generated attribute.

Parameters

attribute_name (str) – The name of the attribute.

Return type

Reference

get_metadata(key)

Retrieve a value value from the CloudFormation Resource Metadata.

Parameters

key (str) –

See

https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/metadata-section-structure.html

Note that this is a different set of metadata from CDK node metadata; this metadata ends up in the stack template under the resource, whereas CDK node metadata ends up in the Cloud Assembly.

Return type

Any

inspect(inspector)

Examines the CloudFormation resource and discloses attributes.

Parameters

inspector (TreeInspector) –

  • tree inspector to collect and process attributes.

Return type

None

override_logical_id(new_logical_id)

Overrides the auto-generated logical ID with a specific ID.

Parameters

new_logical_id (str) – The new logical ID to use for this stack element.

Return type

None

to_string()

Returns a string representation of this construct.

Return type

str

Returns

a string representation of this resource

Attributes

CFN_RESOURCE_TYPE_NAME = 'AWS::QLDB::Ledger'
cfn_options

Options for this resource, such as condition, update policy etc.

Return type

ICfnResourceOptions

cfn_resource_type

AWS resource type.

Return type

str

creation_stack

return:

the stack trace of the point where this Resource was created from, sourced from the +metadata+ entry typed +aws:cdk:logicalId+, and with the bottom-most node +internal+ entries filtered.

Return type

List[str]

deletion_protection

Specifies whether the ledger is protected from being deleted by any user.

If not defined during 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 parameter to false .

Link

http://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-resource-qldb-ledger.html#cfn-qldb-ledger-deletionprotection

Return type

Union[bool, IResolvable, None]

kms_key

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 symmetric encryption 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 .

Link

http://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-resource-qldb-ledger.html#cfn-qldb-ledger-kmskey

Return type

Optional[str]

logical_id

The logical ID for this CloudFormation stack element.

The logical ID of the element is calculated from the path of the resource node in the construct tree.

To override this value, use overrideLogicalId(newLogicalId).

Return type

str

Returns

the logical ID as a stringified token. This value will only get resolved during synthesis.

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 .

Link

http://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-resource-qldb-ledger.html#cfn-qldb-ledger-name

Return type

Optional[str]

node

The construct tree node associated with this construct.

Return type

ConstructNode

permissions_mode

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 . .. epigraph:

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

http://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-resource-qldb-ledger.html#cfn-qldb-ledger-permissionsmode

Return type

str

ref

Return a string that will be resolved to a CloudFormation { Ref } for this element.

If, by any chance, the intrinsic reference of a resource is not a string, you could coerce it to an IResolvable through Lazy.any({ produce: resource.ref }).

Return type

str

stack

The stack in which this element is defined.

CfnElements must be defined within a stack scope (directly or indirectly).

Return type

Stack

tags

An array of key-value pairs to apply to this resource.

For more information, see Tag .

Link

http://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-resource-qldb-ledger.html#cfn-qldb-ledger-tags

Return type

TagManager

Static Methods

classmethod is_cfn_element(x)

Returns true if a construct is a stack element (i.e. part of the synthesized cloudformation template).

Uses duck-typing instead of instanceof to allow stack elements from different versions of this library to be included in the same stack.

Parameters

x (Any) –

Return type

bool

Returns

The construct as a stack element or undefined if it is not a stack element.

classmethod is_cfn_resource(construct)

Check whether the given construct is a CfnResource.

Parameters

construct (IConstruct) –

Return type

bool

classmethod is_construct(x)

Return whether the given object is a Construct.

Parameters

x (Any) –

Return type

bool