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Description:

awssolutionsconstructs.awseventsrulelambda 1.181.1

aws-events-rule-lambda module
---

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. This construct is being replaced by the functionally identical aws-eventbridge-lambda.

Reference Documentation:
https://docs.aws.amazon.com/solutions/latest/constructs/

Language
Package

Python
aws_solutions_constructs.aws_events_rule_lambda

Typescript
@aws-solutions-constructs/aws-events-rule-lambda

Java
software.amazon.awsconstructs.services.eventsrulelambda

Overview
This AWS Solutions Construct implements an AWS Events rule and an AWS Lambda function.
Here is a minimal deployable pattern definition:
Typescript
// aws-events-rule-lambda has been deprecated for CDK V2 in favor of aws-eventbridge-lambda.
// This sample uses the CDK V1 syntax
import * as cdk from '@aws-cdk/core';
import * as lambda from '@aws-cdk/aws-lambda';
import * as events from '@aws-cdk/aws-events';
import { EventsRuleToLambdaProps, EventsRuleToLambda } from '@aws-solutions-constructs/aws-events-rule-lambda';

const constructProps: EventsRuleToLambdaProps = {
lambdaFunctionProps: {
code: lambda.Code.fromAsset(`lambda`),
runtime: lambda.Runtime.NODEJS_14_X,
handler: 'index.handler'
},
eventRuleProps: {
schedule: events.Schedule.rate(cdk.Duration.minutes(5))
}
};

new EventsRuleToLambda(this, 'test-events-rule-lambda', constructProps);

Python
# aws-events-rule-lambda has been deprecated for CDK V2 in favor of aws-eventbridge-lambda.
# This sample uses the CDK V1 syntax
from aws_solutions_constructs.aws_events_rule_lambda import EventsRuleToLambdaProps, EventsRuleToLambda
from aws_cdk import (
aws_lambda as _lambda,
aws_events as events,
core
)

EventsRuleToLambda(self, 'test_events_rule_lambda',
lambda_function_props=_lambda.FunctionProps(
code=_lambda.Code.from_asset('lambda'),
runtime=_lambda.Runtime.PYTHON_3_9,
handler='index.handler'
),
event_rule_props=events.RuleProps(
schedule=events.Schedule.rate(core.Duration.minutes(5))
))

Java
// aws-events-rule-lambda has been deprecated for CDK V2 in favor of aws-eventbridge-lambda.
// This sample uses the CDK V1 syntax
import software.constructs.Construct;

import software.amazon.awscdk.core.*;
import software.amazon.awscdk.services.events.*;
import software.amazon.awscdk.services.lambda.*;
import software.amazon.awscdk.services.lambda.Runtime;
import software.amazon.awsconstructs.services.eventsrulelambda.*;

new EventsRuleToLambda(this, "test-events-rule-lambda",
new EventsRuleToLambdaProps.Builder()
.lambdaFunctionProps(new FunctionProps.Builder()
.runtime(Runtime.NODEJS_14_X)
.code(Code.fromAsset("lambda"))
.handler("index.handler")
.build())
.eventRuleProps(new RuleProps.Builder()
.schedule(Schedule.rate(Duration.minutes(5)))
.build())
.build());

Pattern Construct Props

Name
Type
Description

existingLambdaObj?
lambda.Function
Existing instance of Lambda Function object, providing both this and lambdaFunctionProps will cause an error.

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 an error.

lambdaFunctionProps?
lambda.FunctionProps
User provided props to override the default props for the Lambda function.

eventRuleProps
events.RuleProps
User provided eventRuleProps to override the defaults

Pattern Properties

Name
Type
Description

eventBus?
events.IEventBus
Returns the instance of events.IEventBus used by the construct

eventsRule
events.Rule
Returns an instance of events.Rule created by the construct

lambdaFunction
lambda.Function
Returns an instance of lambda.Function created by the construct

Default settings
Out of the box implementation of the Construct without any override will set the following defaults:
Amazon CloudWatch Events Rule

Grant least privilege permissions to CloudWatch Events to trigger the Lambda Function

AWS Lambda Function

Configure limited privilege access IAM role for Lambda function
Enable reusing connections with Keep-Alive for NodeJs Lambda function
Enable X-Ray Tracing
Set Environment Variables
AWS_NODEJS_CONNECTION_REUSE_ENABLED (for Node 10.x and higher functions)

Architecture

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