CustomRule

class aws_cdk.aws_config.CustomRule(scope, id, *, lambda_function, configuration_changes=None, periodic=None, config_rule_name=None, description=None, input_parameters=None, maximum_execution_frequency=None, rule_scope=None)

Bases: Resource

A new custom rule.

Resource:

AWS::Config::ConfigRule

ExampleMetadata:

infused

Example:

# Lambda function containing logic that evaluates compliance with the rule.
eval_compliance_fn = lambda_.Function(self, "CustomFunction",
    code=lambda_.AssetCode.from_inline("exports.handler = (event) => console.log(event);"),
    handler="index.handler",
    runtime=lambda_.Runtime.NODEJS_14_X
)

# A custom rule that runs on configuration changes of EC2 instances
custom_rule = config.CustomRule(self, "Custom",
    configuration_changes=True,
    lambda_function=eval_compliance_fn,
    rule_scope=config.RuleScope.from_resource(config.ResourceType.EC2_INSTANCE)
)

# A rule to detect stack drifts
drift_rule = config.CloudFormationStackDriftDetectionCheck(self, "Drift")

# Topic to which compliance notification events will be published
compliance_topic = sns.Topic(self, "ComplianceTopic")

# Send notification on compliance change events
drift_rule.on_compliance_change("ComplianceChange",
    target=targets.SnsTopic(compliance_topic)
)
Parameters:

  • scope (Construct)

  • id (str)

  • lambda_function (IFunction) – The Lambda function to run.

  • configuration_changes (Optional[bool]) – Whether to run the rule on configuration changes. Default: false

  • periodic (Optional[bool]) – Whether to run the rule on a fixed frequency. Default: false

  • config_rule_name (Optional[str]) – A name for the AWS Config rule. Default: - CloudFormation generated name

  • description (Optional[str]) – A description about this AWS Config rule. Default: - No description

  • input_parameters (Optional[Mapping[str, Any]]) – Input parameter values that are passed to the AWS Config rule. Default: - No input parameters

  • maximum_execution_frequency (Optional[MaximumExecutionFrequency]) – The maximum frequency at which the AWS Config rule runs evaluations. Default: MaximumExecutionFrequency.TWENTY_FOUR_HOURS

  • rule_scope (Optional[RuleScope]) – Defines which resources trigger an evaluation for an AWS Config rule. Default: - evaluations for the rule are triggered when any resource in the recording group changes.

Methods

apply_removal_policy(policy)

Apply the given removal policy to this resource.

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 (RemovalPolicy)

Return type:

None

on_compliance_change(id, *, description=None, event_pattern=None, rule_name=None, target=None)

Defines an EventBridge event rule which triggers for rule compliance events.

Parameters:

  • id (str)

  • description (Optional[str]) – A description of the rule’s purpose. Default: - No description

  • event_pattern (Union[EventPattern, Dict[str, Any], None]) – Additional restrictions for the event to route to the specified target. The method that generates the rule probably imposes some type of event filtering. The filtering implied by what you pass here is added on top of that filtering. Default: - No additional filtering based on an event pattern.

  • rule_name (Optional[str]) – A name for the rule. Default: AWS CloudFormation generates a unique physical ID.

  • target (Optional[IRuleTarget]) – The target to register for the event. Default: - No target is added to the rule. Use addTarget() to add a target.

Return type:

Rule

on_event(id, *, description=None, event_pattern=None, rule_name=None, target=None)

Defines an EventBridge event rule which triggers for rule events.

Use rule.addEventPattern(pattern) to specify a filter.

Parameters:

  • id (str)

  • description (Optional[str]) – A description of the rule’s purpose. Default: - No description

  • event_pattern (Union[EventPattern, Dict[str, Any], None]) – Additional restrictions for the event to route to the specified target. The method that generates the rule probably imposes some type of event filtering. The filtering implied by what you pass here is added on top of that filtering. Default: - No additional filtering based on an event pattern.

  • rule_name (Optional[str]) – A name for the rule. Default: AWS CloudFormation generates a unique physical ID.

  • target (Optional[IRuleTarget]) – The target to register for the event. Default: - No target is added to the rule. Use addTarget() to add a target.

Return type:

Rule

on_re_evaluation_status(id, *, description=None, event_pattern=None, rule_name=None, target=None)

Defines an EventBridge event rule which triggers for rule re-evaluation status events.

Parameters:

  • id (str)

  • description (Optional[str]) – A description of the rule’s purpose. Default: - No description

  • event_pattern (Union[EventPattern, Dict[str, Any], None]) – Additional restrictions for the event to route to the specified target. The method that generates the rule probably imposes some type of event filtering. The filtering implied by what you pass here is added on top of that filtering. Default: - No additional filtering based on an event pattern.

  • rule_name (Optional[str]) – A name for the rule. Default: AWS CloudFormation generates a unique physical ID.

  • target (Optional[IRuleTarget]) – The target to register for the event. Default: - No target is added to the rule. Use addTarget() to add a target.

Return type:

Rule

to_string()

Returns a string representation of this construct.

Return type:

str

Attributes

config_rule_arn

The arn of the rule.

Attribute:

true

config_rule_compliance_type

The compliance status of the rule.

Attribute:

true

config_rule_id

The id of the rule.

Attribute:

true

config_rule_name

The name of the rule.

Attribute:

true

env

The environment this resource belongs to.

For resources that are created and managed by the CDK (generally, those created by creating new class instances like Role, Bucket, etc.), this is always the same as the environment of the stack they belong to; however, for imported resources (those obtained from static methods like fromRoleArn, fromBucketName, etc.), that might be different than the stack they were imported into.

node

The construct tree node associated with this construct.

stack

The stack in which this resource is defined.

Static Methods

classmethod from_config_rule_name(scope, id, config_rule_name)

Imports an existing rule.

Parameters:

  • scope (Construct)

  • id (str)

  • config_rule_name (str) – the name of the rule.

Return type:

IRule

classmethod is_construct(x)

Return whether the given object is a Construct.

Parameters:

x (Any)

Return type:

bool

classmethod is_resource(construct)

Check whether the given construct is a Resource.

Parameters:

construct (IConstruct)

Return type:

bool