aws-events-rule-sns

Some of our early constructs don’t meet the naming standards that evolved for the library. We are releasing completely feature compatible versions with corrected names. The underlying implementation code is the same regardless of whether you deploy the construct using the old or new name. We will support both names for all 1.x releases, but in 2.x we will only publish the correctly named constructs.

Note: This construct has been deprecated and is superseded by the aws-eventbridge-sns construct.

Note: To ensure proper functionality, the AWS Solutions Constructs packages and AWS CDK packages in your project must be the same version.

Language	Package
Python	aws_solutions_constructs.aws_events_rule_sns
Typescript	@aws-solutions-constructs/aws-events-rule-sns
Java	software.amazon.awsconstructs.services.eventsrulesns

Overview

This pattern implements an Amazon CloudWatch Events rule connected to an Amazon SNS topic.

Here is a minimal deployable pattern definition:

import { Duration } from '@aws-cdk/core';
import * as events from '@aws-cdk/aws-events';
import * as iam from '@aws-cdk/aws-iam';
import { EventsRuleToSnsProps, EventsRuleToSns } from "@aws-solutions-constructs/aws-events-rule-sns";

const props: EventsRuleToSnsProps = {
    eventRuleProps: {
      schedule: events.Schedule.rate(Duration.minutes(5)),
    }
};

const constructStack = new EventsRuleToSns(this, 'test-construct', props);

// Grant yourself permissions to use the Customer Managed KMS Key
const policyStatement = new iam.PolicyStatement({
    actions: ["kms:Encrypt", "kms:Decrypt"],
    effect: iam.Effect.ALLOW,
    principals: [ new iam.AccountRootPrincipal() ],
    resources: [ "*" ]
});

constructStack.encryptionKey?.addToResourcePolicy(policyStatement);

Initializer

new EventsRuleToSNS(scope: Construct, id: string, props: EventsRuleToSNSProps);

Parameters

• scope Construct

• id string

• props EventsRuleToSnsProps

Pattern Construct Props

Name	Type	Description
eventRuleProps	events.RuleProps	User-provided properties to override the default properties for the CloudWatch Events rule.
existingTopicObj?	sns.Topic	Existing instance of SNS Topic object, providing both this and topicProps will cause an error.
topicProps?	sns.TopicProps	Optional user-provided properties to override the default properties for the SNS topic. Ignored if an existingTopicObj is provided.
existingEventBusInterface?	events.IEventBus	Optional user-provided custom EventBus for construct to use. Providing both this and eventBusProps results an error.
eventBusProps?	events.EventBusProps	Optional user-provided properties to override the default properties when creating a custom EventBus. Setting this value to {} will create a custom EventBus using all default properties. If neither this nor existingEventBusInterface is provided the construct will use the default EventBus. Providing both this and existingEventBusInterface results in an error.
enableEncryptionWithCustomerManagedKey?	boolean	Whether to use a customer-managed encryption key, either managed by this CDK app or imported. If importing an encryption key, it must be specified in the encryptionKey property for this construct.
encryptionKey?	kms.Key	An optional, existing encryption key to be used instead of the default encryption key.
encryptionKeyProps?	kms.KeyProps	Optional user-provided properties to override the default properties for the encryption key.

Pattern Properties

Name	Type	Description
eventBus?	events.IEventBus	Returns an instance of the Event bus created by the pattern.
eventsRule	events.Rule	Returns an instance of the Events rule created by the pattern.
snsTopic	sns.Topic	Returns an instance of the SNS topic created by the pattern.
encryptionKey	kms.Key	Returns an instance of the encryption key created by the pattern.

Default settings

Out-of-the-box implementation of this pattern without any overrides will set the following defaults:

Amazon CloudWatch Events rule

• Grant least privilege permissions to CloudWatch Events to publish to the SNS topic.

Amazon SNS topic

• Configure least privilege access permissions for SNS topic.

• Enable server-side encryption for SNS topic using customer-managed AWS KMS key.

• Enforce encryption of data in transit.

Architecture

GitHub

To view the code for this pattern, create/view issues and pull requests, and more:
	@aws-solutions-constructs/aws-events-rule-sns