aws-cdk-aws-autoscaling-hooktargets

import os from aws_cdk import ( Stack, App, Duration, aws_ec2 as ec2, aws_autoscaling as autoscaling, aws_sns as sns, ) from aws_cdk.aws_autoscaling_hooktargets import TopicHookTarget from constructs import Construct class AutoScalingHookStack(Stack): def __init__(self, scope: Construct, id: str, **kwargs) -> None: super().__init__(scope, id, **kwargs) vpc = ec2.Vpc(self, "VPC", max_azs=2) # Create an SNS Topic to receive notifications topic = sns.Topic(self, "LifecycleHookTopic") # Create an Auto Scaling Group asg = autoscaling.AutoScalingGroup(self, "ASG", vpc=vpc, instance_type=ec2.InstanceType.of(ec2.InstanceClass.T2, ec2.InstanceSize.MICRO), machine_image=ec2.AmazonLinuxImage(), min_capacity=0, max_capacity=1, desired_capacity=0 # Start at 0 to see hooks fire on scale-out ) # Add a lifecycle hook targeting the SNS Topic asg.add_lifecycle_hook("ScalingOutHook", lifecycle_transition=autoscaling.LifecycleTransition.AUTO_SCALING_LAUNCH, notification_target=TopicHookTarget(topic), default_result=autoscaling.DefaultResult.CONTINUE, heartbeat_timeout=Duration.minutes(5) ) # Example of how to synthesize the stack # app = App() # AutoScalingHookStack(app, "AutoScalingHookExampleStack", # env={'region': os.environ.get('CDK_DEFAULT_REGION', 'us-east-1')}) # app.synth()