AWS IoT Construct Library

> AWS CDK v1 has reached End-of-Support on 2023-06-01. > This package is no longer being updated, and users should migrate to AWS CDK v2. > > For more information on how to migrate, see the [Migrating to AWS CDK v2 guide][doc]. > > [doc]: https://docs.aws.amazon.com/cdk/v2/guide/migrating-v2.html

AWS IoT Core lets you connect billions of IoT devices and route trillions of messages to AWS services without managing infrastructure.

Installation

Install the module:

$ npm i @aws-cdk/aws-iot

Import it into your code:

import * as iot from '@aws-cdk/aws-iot';
import * as actions from '@aws-cdk/aws-iot-actions';

TopicRule

Create a topic rule that give your devices the ability to interact with AWS services. You can create a topic rule with an action that invoke the Lambda action as following:

const func = new lambda.Function(this, 'MyFunction', {
  runtime: lambda.Runtime.NODEJS_14_X,
  handler: 'index.handler',
  code: lambda.Code.fromInline(`
    exports.handler = (event) => {
      console.log("It is test for lambda action of AWS IoT Rule.", event);
    };`
  ),
});

new iot.TopicRule(this, 'TopicRule', {
  topicRuleName: 'MyTopicRule', // optional
  description: 'invokes the lambda function', // optional
  sql: iot.IotSql.fromStringAsVer20160323("SELECT topic(2) as device_id, timestamp() as timestamp FROM 'device/+/data'"),
  actions: [new actions.LambdaFunctionAction(func)],
});

Or, you can add an action after constructing the TopicRule instance as following:

declare const func: lambda.Function;

const topicRule = new iot.TopicRule(this, 'TopicRule', {
  sql: iot.IotSql.fromStringAsVer20160323("SELECT topic(2) as device_id, timestamp() as timestamp FROM 'device/+/data'"),
});
topicRule.addAction(new actions.LambdaFunctionAction(func));

You can also supply errorAction as following, and the IoT Rule will trigger it if a rule's action is unable to perform:

import * as logs from '@aws-cdk/aws-logs';

const logGroup = new logs.LogGroup(this, 'MyLogGroup');

new iot.TopicRule(this, 'TopicRule', {
  sql: iot.IotSql.fromStringAsVer20160323("SELECT topic(2) as device_id, timestamp() as timestamp FROM 'device/+/data'"),
  errorAction: new actions.CloudWatchLogsAction(logGroup),
});

If you wanna make the topic rule disable, add property enabled: false as following:

new iot.TopicRule(this, 'TopicRule', {
  sql: iot.IotSql.fromStringAsVer20160323("SELECT topic(2) as device_id, timestamp() as timestamp FROM 'device/+/data'"),
  enabled: false,
});

See also @aws-cdk/aws-iot-actions for other actions.