@aws-solutions-constructs/aws-sqs-lambda NPM

aws-sqs-lambda module

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

Language	Package
Python	`aws_solutions_constructs.aws_sqs_lambda`
Typescript	`@aws-solutions-constructs/aws-sqs-lambda`
Java	`software.amazon.awsconstructs.services.sqslambda`

Overview

This AWS Solutions Construct implements an Amazon SQS queue connected to an AWS Lambda function.

Here is a minimal deployable pattern definition:

Typescript

import { Construct } from 'constructs';
import { Stack, StackProps } from 'aws-cdk-lib';
import { SqsToLambda, SqsToLambdaProps } from "@aws-solutions-constructs/aws-sqs-lambda";
import * as lambda from 'aws-cdk-lib/aws-lambda';

new SqsToLambda(this, 'SqsToLambdaPattern', {
  lambdaFunctionProps: {
    runtime: lambda.Runtime.NODEJS_16_X,
    handler: 'index.handler',
    code: lambda.Code.fromAsset(`lambda`)
  }
});

Python

from aws_solutions_constructs.aws_sqs_lambda import SqsToLambda
from aws_cdk import (
    aws_lambda as _lambda,
    Stack
)
from constructs import Construct


SqsToLambda(self, 'SqsToLambdaPattern',
            lambda_function_props=_lambda.FunctionProps(
                code=_lambda.Code.from_asset('lambda'),
                runtime=_lambda.Runtime.PYTHON_3_9,
                handler='index.handler'
            )
            )

Java

import software.constructs.Construct;

import software.amazon.awscdk.Stack;
import software.amazon.awscdk.StackProps;
import software.amazon.awscdk.services.lambda.*;
import software.amazon.awscdk.services.lambda.Runtime;
import software.amazon.awsconstructs.services.sqslambda.*;

new SqsToLambda(this, "SnsToSqsPattern", new SqsToLambdaProps.Builder()
        .lambdaFunctionProps(new FunctionProps.Builder()
                .runtime(Runtime.NODEJS_16_X)
                .code(Code.fromAsset("lambda"))
                .handler("index.handler")
                .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.
existingQueueObj?	`sqs.Queue`	An optional, existing SQS queue to be used instead of the default queue. Providing both this and `queueProps` will cause an error.
queueProps?	`sqs.QueueProps`	Optional user-provided props to override the default props for the SQS queue.
deadLetterQueueProps?	`sqs.QueueProps`	Optional user-provided props to override the default props for the dead letter SQS queue.
deployDeadLetterQueue?	`boolean`	Whether to create a secondary queue to be used as a dead letter queue. Defaults to true.
maxReceiveCount?	`number`	The number of times a message can be unsuccessfully dequeued before being moved to the dead letter queue. Defaults to 15.
sqsEventSourceProps?	`SqsEventSourceProps`	Optional user provided properties for the queue event source.
enableEncryptionWithCustomerManagedKey?	`boolean`	If no key is provided, this flag determines whether the queue is encrypted with a new CMK or an AWS managed key. This flag is ignored if any of the following are defined: queueProps.encryptionMasterKey, encryptionKey or encryptionKeyProps.
encryptionKey?	`kms.Key`	An optional, imported encryption key to encrypt the SQS Queue with.
encryptionKeyProps?	`kms.KeyProps`	Optional user provided properties to override the default properties for the KMS encryption key used to encrypt the SQS queue with.

Pattern Properties

Name	Type	Description
lambdaFunction	`lambda.Function`	Returns an instance of the Lambda function created by the pattern.
sqsQueue	`sqs.Queue`	Returns an instance of the SQS queue created by the pattern.
deadLetterQueue?	`sqs.Queue`	Returns an instance of the dead-letter SQS queue created by the pattern.

Default settings

Out of the box implementation of the Construct without any override will set the following defaults:

Amazon SQS Queue

Deploy SQS dead-letter queue for the source SQS Queue
Enable server-side encryption for source SQS Queue using AWS Managed KMS Key
Enforce encryption of data in transit

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

aws cdk awscdk AWS Solutions Constructs Amazon SQS AWS Lambda

@aws-cdk/integ-tests-alpha @aws-solutions-constructs/core constructs

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