aws-iot-lambda module

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 This means that while you may use them, you may need to update your source code when upgrading to a newer version of this package.

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

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 Construct implements an AWS IoT MQTT topic rule and an AWS Lambda function pattern.

Here is a minimal deployable pattern definition in Typescript:

const { 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`	Existing instance of Lambda Function object, if this is set then the lambdaFunctionProps is ignored.
lambdaFunctionProps?	`lambda.FunctionProps`	User provided props to override the default props for the Lambda function.
iotTopicRuleProps?	`iot.CfnTopicRuleProps`	User provided CfnTopicRuleProps to override the defaults

Pattern Properties

Name	Type	Description
iotTopicRule	`iot.CfnTopicRule`	Returns an instance of iot.CfnTopicRule 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 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

Architecture Diagram