48 lines
1.5 KiB
Python
48 lines
1.5 KiB
Python
# reference: https://aws.amazon.com/premiumsupport/knowledge-center/start-stop-lambda-eventbridge/
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import boto3
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import os
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import json
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import time
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def start_instances(instances: list[str]) -> dict:
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ec2 = boto3.client('ec2', region_name=os.environ['AWS_REGION'])
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resp = ec2.start_instances(InstanceIds=instances)
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ec2.close()
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return resp
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def stop_instances(instances: list[str]) -> dict:
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ec2 = boto3.client('ec2', region_name=os.environ['AWS_REGION'])
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resp = ec2.stop_instances(InstanceIds=instances)
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ec2.close()
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return resp
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def instance_status(instances: list[str]) -> str:
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time.sleep(10)
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ec2 = boto3.client('ec2', region_name=os.environ['AWS_REGION'])
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ec2Array: list[dict] = []
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response = ec2.describe_instances(InstanceIds=instances)
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for r in response['Reservations']:
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for i in r['Instances']:
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for t in i['Tags']:
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if t['Key'] == 'Name':
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ec2Array.append({'id': i['InstanceId'], 'name': t['Value'], 'state': i['State']['Name']})
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ec2.close()
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return json.dumps(ec2Array)
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def lambda_handler(event, context):
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instances: list[str] = json.loads(os.environ['instances'])
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if event['action'] == 'start':
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resp = start_instances(instances)
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print(instance_status(instances))
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elif event['action'] == 'stop':
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resp = stop_instances(instances)
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print(instance_status(instances))
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else:
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resp = "Event action not provided"
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return resp
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