Actions for AWS::IoTEvents Detector Model

---

cdk-constructs: Experimental

The APIs of higher level constructs in this module are experimental and under active development. They are subject to non-backward compatible changes or removal in any future version. These are not subject to the Semantic Versioning model and breaking changes will be announced in the release notes. This means that while you may use them, you may need to update your source code when upgrading to a newer version of this package.

This library contains integration classes to specify actions of state events of Detector Model in @aws-cdk/aws-iotevents-alpha. Instances of these classes should be passed to State defined in @aws-cdk/aws-iotevents-alpha You can define built-in actions to use a timer or set a variable, or send data to other AWS resources.

This library contains integration classes to use a timer or set a variable, or send data to other AWS resources. AWS IoT Events can trigger actions when it detects a specified event or transition event.

Currently supported are:

Use timer
Set variable to detector instance
Invoke a Lambda function

Use timer

The code snippet below creates an Action that creates the timer with duration in seconds.

# Example automatically generated from non-compiling source. May contain errors.
import aws_cdk.aws_iotevents_alpha as iotevents
import aws_cdk.aws_iotevents_actions_alpha as actions

# input: iotevents.IInput

state = iotevents.State(
    state_name="MyState",
    on_enter=[iotevents.Event(
        event_name="test-event",
        condition=iotevents.Expression.current_input(input),
        actions=[
            actions.SetTimerAction("MyTimer", {
                "duration": cdk.Duration.seconds(60)
            })
        ]
    )]
)

Setting duration by IoT Events Expression:

# Example automatically generated from non-compiling source. May contain errors.
actions.SetTimerAction("MyTimer",
    duration_expression=iotevents.Expression.input_attribute(input, "payload.durationSeconds")
)

And the timer can be reset and cleared. Below is an example of general Device HeartBeat Detector Model:

# Example automatically generated from non-compiling source. May contain errors.
online = iotevents.State(
    state_name="Online",
    on_enter=[{
        "event_name": "enter-event",
        "condition": iotevents.Expression.current_input(input),
        "actions": [
            actions.SetTimerAction("MyTimer",
                duration=cdk.Duration.seconds(60)
            )
        ]
    }],
    on_input=[{
        "event_name": "input-event",
        "condition": iotevents.Expression.current_input(input),
        "actions": [
            actions.ResetTimerAction("MyTimer")
        ]
    }],
    on_exit=[{
        "event_name": "exit-event",
        "actions": [
            actions.ClearTimerAction("MyTimer")
        ]
    }]
)
offline = iotevents.State(state_name="Offline")

online.transition_to(offline, when=iotevents.Expression.timeout("MyTimer"))
offline.transition_to(online, when=iotevents.Expression.current_input(input))

Set variable to detector instance

The code snippet below creates an Action that set variable to detector instance when it is triggered.

import aws_cdk.aws_iotevents_alpha as iotevents
import aws_cdk.aws_iotevents_actions_alpha as actions

# input: iotevents.IInput

state = iotevents.State(
    state_name="MyState",
    on_enter=[iotevents.Event(
        event_name="test-event",
        condition=iotevents.Expression.current_input(input),
        actions=[
            actions.SetVariableAction("MyVariable",
                iotevents.Expression.input_attribute(input, "payload.temperature"))
        ]
    )]
)

Invoke a Lambda function

The code snippet below creates an Action that invoke a Lambda function when it is triggered.

import aws_cdk.aws_iotevents_alpha as iotevents
import aws_cdk.aws_iotevents_actions_alpha as actions
import aws_cdk.aws_lambda as lambda_

# input: iotevents.IInput
# func: lambda.IFunction

state = iotevents.State(
    state_name="MyState",
    on_enter=[iotevents.Event(
        event_name="test-event",
        condition=iotevents.Expression.current_input(input),
        actions=[actions.LambdaInvokeAction(func)]
    )]
)

Release files for aws-cdk.aws-iotevents-actions-alpha 2.271.0a0

For a detailed explanation of source distributions (sdists) and built distributions (wheels), please see the package formats documentation.

Source distribution (sdist)

Source distribution for aws-cdk.aws-iotevents-actions-alpha 2.271.0a0
File	Size	Uploaded
aws_cdk_aws_iotevents_actions_alpha-2.271.0a0.tar.gz	55.4 kB	Sep 25, 2026	Details

Built distribution (wheel)

Table of built distributions (wheels) for aws-cdk.aws-iotevents-actions-alpha 2.271.0a0
File	Interpreter	ABI	Platform	Reset
aws_cdk_aws_iotevents_actions_alpha-2.271.0a0-py3-none-any.whl 53.9 kB Sep 25, 2026	Python 3	none	any	Details

Total release size: 109.3 kB

Release files / aws_cdk_aws_iotevents_actions_alpha-2.271.0a0.tar.gz

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