aws-iot-lambda

All classes are under active development and subject to non-backward compatible changes or removal in any future version. These are not subject to the Semantic Versioning model. This means that while you may use them, you may need to update your source code when upgrading to a newer version of this package.

Language	Package
Python	aws_solutions_constructs.aws_iot_lambda
Typescript	@aws-solutions-constructs/aws-iot-lambda
Java	software.amazon.awsconstructs.services.iotlambda

This AWS Solutions Constructs pattern implements an AWS IoT MQTT topic rule and an AWS Lambda function pattern.

Here is a minimal deployable pattern definition in TypeScript:

import { IotToLambdaProps, IotToLambda } from '@aws-solutions-constructs/aws-iot-lambda';

const props: IotToLambdaProps = {
    lambdaFunctionProps: {
        code: lambda.Code.fromAsset(`${__dirname}/lambda`),
        runtime: lambda.Runtime.NODEJS_10_X,
        handler: 'index.handler'
    },
    iotTopicRuleProps: {
        topicRulePayload: {
            ruleDisabled: false,
            description: "Processing of DTC messages from the AWS Connected Vehicle Solution.",
            sql: "SELECT * FROM 'connectedcar/dtc/#'",
            actions: []
        }
    }
};

new IotToLambda(this, 'test-iot-lambda-integration', props);

Initializer

new IotToLambda(scope: Construct, id: string, props: IotToLambdaProps);

Parameters

• scope Construct

• id string

• props IotToLambdaProps

Pattern Construct Props

Name	Type	Description
existingLambdaObj?	lambda.Function	An optional, existing Lambda function to be used instead of the default function. If an existing function is provided, the lambdaFunctionProps property will be ignored.
lambdaFunctionProps?	lambda.FunctionProps	Optional user-provided properties to override the default properties for the Lambda function. Ignored if an existingLambdaObj is provided.
iotTopicRuleProps?	iot.CfnTopicRuleProps	User provided CfnTopicRuleProps to override the defaults

Pattern Properties

Name	Type	Description
iotTopicRule	iot.CfnTopicRule	Returns an instance of the IoT topic rule created by the pattern.
lambdaFunction	lambda.Function	Returns an instance of the Lambda function created by the pattern.

Default settings

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

Amazon IoT Rule

• Configure least privilege access IAM role for Amazon IoT.

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

GitHub

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