@aws-solutions-constructs/aws-eventbridge-lambda
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2.57.0 • Public • Published

aws-eventbridge-lambda module


Stability: Stable


Reference Documentation: https://docs.aws.amazon.com/solutions/latest/constructs/
Language Package
Python Logo Python aws_solutions_constructs.aws_eventbridge_lambda
Typescript Logo Typescript @aws-solutions-constructs/aws-eventbridge-lambda
Java Logo Java software.amazon.awsconstructs.services.eventbridgelambda

Overview

This AWS Solutions Construct implements an AWS EventBridge rule and an AWS Lambda function.

Here is a minimal deployable pattern definition:

Typescript

import { Construct } from 'constructs';
import { Stack, StackProps, Duration } from 'aws-cdk-lib';
import { EventbridgeToLambdaProps, EventbridgeToLambda } from '@aws-solutions-constructs/aws-eventbridge-lambda';
import * as lambda from 'aws-cdk-lib/aws-lambda';
import * as events from 'aws-cdk-lib/aws-events';

const constructProps: EventbridgeToLambdaProps = {
  lambdaFunctionProps: {
    code: lambda.Code.fromAsset(`lambda`),
    runtime: lambda.Runtime.NODEJS_16_X,
    handler: 'index.handler'
  },
  eventRuleProps: {
    schedule: events.Schedule.rate(Duration.minutes(5))
  }
};

new EventbridgeToLambda(this, 'test-eventbridge-lambda', constructProps);

Python

from aws_solutions_constructs.aws_eventbridge_lambda import EventbridgeToLambda, EventbridgeToLambdaProps
from aws_cdk import (
    aws_lambda as _lambda,
    aws_events as events,
    Duration,
    Stack
)
from constructs import Construct

EventbridgeToLambda(self, 'test-eventbridge-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(
                            Duration.minutes(5))
                    ))

Java

import software.constructs.Construct;

import software.amazon.awscdk.Stack;
import software.amazon.awscdk.StackProps;
import software.amazon.awscdk.Duration;
import software.amazon.awscdk.services.events.*;
import software.amazon.awscdk.services.lambda.*;
import software.amazon.awscdk.services.lambda.Runtime;
import software.amazon.awsconstructs.services.eventbridgelambda.*;

new EventbridgeToLambda(this, "test-eventbridge-lambda",
        new EventbridgeToLambdaProps.Builder()
                .lambdaFunctionProps(new FunctionProps.Builder()
                        .runtime(Runtime.NODEJS_16_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.
lambdaFunctionProps? lambda.FunctionProps User provided props to override the default props for the Lambda function.
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.
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 EventBridge Rule

  • Grant least privilege permissions to EventBridge rule 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

Architecture Diagram


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