AWS IoT Construct Library

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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 This package is no longer being updated, and users should migrate to AWS CDK v2.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.

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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 aws_cdk.aws_iot as iot
import aws_cdk.aws_iot_actions as 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:

func = lambda_.Function(self, "MyFunction",
    runtime=lambda_.Runtime.NODEJS_14_X,
    handler="index.handler",
    code=lambda_.Code.from_inline("""
            exports.handler = (event) => {
              console.log("It is test for lambda action of AWS IoT Rule.", event);
            };""")
)

iot.TopicRule(self, "TopicRule",
    topic_rule_name="MyTopicRule",  # optional
    description="invokes the lambda function",  # optional
    sql=iot.IotSql.from_string_as_ver20160323("SELECT topic(2) as device_id, timestamp() as timestamp FROM 'device/+/data'"),
    actions=[actions.LambdaFunctionAction(func)]
)

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

# func: lambda.Function


topic_rule = iot.TopicRule(self, "TopicRule",
    sql=iot.IotSql.from_string_as_ver20160323("SELECT topic(2) as device_id, timestamp() as timestamp FROM 'device/+/data'")
)
topic_rule.add_action(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 aws_cdk.aws_logs as logs


log_group = logs.LogGroup(self, "MyLogGroup")

iot.TopicRule(self, "TopicRule",
    sql=iot.IotSql.from_string_as_ver20160323("SELECT topic(2) as device_id, timestamp() as timestamp FROM 'device/+/data'"),
    error_action=actions.CloudWatchLogsAction(log_group)
)

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

iot.TopicRule(self, "TopicRule",
    sql=iot.IotSql.from_string_as_ver20160323("SELECT topic(2) as device_id, timestamp() as timestamp FROM 'device/+/data'"),
    enabled=False
)

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