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Description:

awscdk.awsiotactions 1.204.0

Actions for AWS IoT Rule
---

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This package is no longer being updated, and users should migrate to AWS CDK v2.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

This library contains integration classes to send data to any number of
supported AWS Services. Instances of these classes should be passed to
TopicRule defined in @aws-cdk/aws-iot.
Currently supported are:

Republish a message to another MQTT topic
Invoke a Lambda function
Put objects to a S3 bucket
Put logs to CloudWatch Logs
Capture CloudWatch metrics
Change state for a CloudWatch alarm
Put records to Kinesis Data stream
Put records to Kinesis Data Firehose stream
Send messages to SQS queues
Publish messages on SNS topics

Republish a message to another MQTT topic
The code snippet below creates an AWS IoT Rule that republish a message to
another MQTT topic when it is triggered.
iot.TopicRule(self, "TopicRule",
sql=iot.IotSql.from_string_as_ver20160323("SELECT topic(2) as device_id, timestamp() as timestamp, temperature FROM 'device/+/data'"),
actions=[
actions.IotRepublishMqttAction("${topic()}/republish",
quality_of_service=actions.MqttQualityOfService.AT_LEAST_ONCE
)
]
)

Invoke a Lambda function
The code snippet below creates an AWS IoT Rule that invoke a Lambda function
when it is triggered.
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",
sql=iot.IotSql.from_string_as_ver20160323("SELECT topic(2) as device_id, timestamp() as timestamp, temperature FROM 'device/+/data'"),
actions=[actions.LambdaFunctionAction(func)]
)

Put objects to a S3 bucket
The code snippet below creates an AWS IoT Rule that put objects to a S3 bucket
when it is triggered.
bucket = s3.Bucket(self, "MyBucket")

iot.TopicRule(self, "TopicRule",
sql=iot.IotSql.from_string_as_ver20160323("SELECT topic(2) as device_id FROM 'device/+/data'"),
actions=[actions.S3PutObjectAction(bucket)]
)

The property key of S3PutObjectAction is given the value ${topic()}/${timestamp()} by default. This ${topic()}
and ${timestamp()} is called Substitution templates. For more information see
this documentation.
In above sample, ${topic()} is replaced by a given MQTT topic as device/001/data. And ${timestamp()} is replaced
by the number of the current timestamp in milliseconds as 1636289461203. So if the MQTT broker receives an MQTT topic
device/001/data on 2021-11-07T00:00:00.000Z, the S3 bucket object will be put to device/001/data/1636243200000.
You can also set specific key as following:
bucket = s3.Bucket(self, "MyBucket")

iot.TopicRule(self, "TopicRule",
sql=iot.IotSql.from_string_as_ver20160323("SELECT topic(2) as device_id, year, month, day FROM 'device/+/data'"),
actions=[
actions.S3PutObjectAction(bucket,
key="${year}/${month}/${day}/${topic(2)}"
)
]
)

If you wanna set access control to the S3 bucket object, you can specify accessControl as following:
bucket = s3.Bucket(self, "MyBucket")

iot.TopicRule(self, "TopicRule",
sql=iot.IotSql.from_string_as_ver20160323("SELECT * FROM 'device/+/data'"),
actions=[
actions.S3PutObjectAction(bucket,
access_control=s3.BucketAccessControl.PUBLIC_READ
)
]
)

Put logs to CloudWatch Logs
The code snippet below creates an AWS IoT Rule that put logs to CloudWatch Logs
when it is triggered.
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 FROM 'device/+/data'"),
actions=[actions.CloudWatchLogsAction(log_group)]
)

Capture CloudWatch metrics
The code snippet below creates an AWS IoT Rule that capture CloudWatch metrics
when it is triggered.
topic_rule = iot.TopicRule(self, "TopicRule",
sql=iot.IotSql.from_string_as_ver20160323("SELECT topic(2) as device_id, namespace, unit, value, timestamp FROM 'device/+/data'"),
actions=[
actions.CloudWatchPutMetricAction(
metric_name="${topic(2)}",
metric_namespace="${namespace}",
metric_unit="${unit}",
metric_value="${value}",
metric_timestamp="${timestamp}"
)
]
)

Change the state of an Amazon CloudWatch alarm
The code snippet below creates an AWS IoT Rule that changes the state of an Amazon CloudWatch alarm when it is triggered:
import aws_cdk.aws_cloudwatch as cloudwatch

metric = cloudwatch.Metric(
namespace="MyNamespace",
metric_name="MyMetric",
dimensions={"MyDimension": "MyDimensionValue"}
)
alarm = cloudwatch.Alarm(self, "MyAlarm",
metric=metric,
threshold=100,
evaluation_periods=3,
datapoints_to_alarm=2
)

topic_rule = iot.TopicRule(self, "TopicRule",
sql=iot.IotSql.from_string_as_ver20160323("SELECT topic(2) as device_id FROM 'device/+/data'"),
actions=[
actions.CloudWatchSetAlarmStateAction(alarm,
reason="AWS Iot Rule action is triggered",
alarm_state_to_set=cloudwatch.AlarmState.ALARM
)
]
)

Put records to Kinesis Data stream
The code snippet below creates an AWS IoT Rule that put records to Kinesis Data
stream when it is triggered.
import aws_cdk.aws_kinesis as kinesis

stream = kinesis.Stream(self, "MyStream")

topic_rule = iot.TopicRule(self, "TopicRule",
sql=iot.IotSql.from_string_as_ver20160323("SELECT * FROM 'device/+/data'"),
actions=[
actions.KinesisPutRecordAction(stream,
partition_key="${newuuid()}"
)
]
)

Put records to Kinesis Data Firehose stream
The code snippet below creates an AWS IoT Rule that put records to Put records
to Kinesis Data Firehose stream when it is triggered.
import aws_cdk.aws_kinesisfirehose as firehose
import aws_cdk.aws_kinesisfirehose_destinations as destinations

bucket = s3.Bucket(self, "MyBucket")
stream = firehose.DeliveryStream(self, "MyStream",
destinations=[destinations.S3Bucket(bucket)]
)

topic_rule = iot.TopicRule(self, "TopicRule",
sql=iot.IotSql.from_string_as_ver20160323("SELECT * FROM 'device/+/data'"),
actions=[
actions.FirehosePutRecordAction(stream,
batch_mode=True,
record_separator=actions.FirehoseRecordSeparator.NEWLINE
)
]
)

Send messages to an SQS queue
The code snippet below creates an AWS IoT Rule that send messages
to an SQS queue when it is triggered:
import aws_cdk.aws_sqs as sqs

queue = sqs.Queue(self, "MyQueue")

topic_rule = iot.TopicRule(self, "TopicRule",
sql=iot.IotSql.from_string_as_ver20160323("SELECT topic(2) as device_id, year, month, day FROM 'device/+/data'"),
actions=[
actions.SqsQueueAction(queue,
use_base64=True
)
]
)

Publish messages on an SNS topic
The code snippet below creates and AWS IoT Rule that publishes messages to an SNS topic when it is triggered:
import aws_cdk.aws_sns as sns

topic = sns.Topic(self, "MyTopic")

topic_rule = iot.TopicRule(self, "TopicRule",
sql=iot.IotSql.from_string_as_ver20160323("SELECT topic(2) as device_id, year, month, day FROM 'device/+/data'"),
actions=[
actions.SnsTopicAction(topic,
message_format=actions.SnsActionMessageFormat.JSON
)
]
)