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83 lines
2.8 KiB
83 lines
2.8 KiB
5 years ago
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import boto3
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import json
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cloudwatch = boto3.client('cloudwatch')
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def del_alarm(type, name_prefix):
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print("[delete %s alarm.]" % type)
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rep = cloudwatch.describe_alarms(AlarmNamePrefix=name_prefix, )
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alarm_names = []
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for m in rep.get('MetricAlarms'):
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alarm_names.append(m.get('AlarmName'))
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response = cloudwatch.delete_alarms(
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AlarmNames=alarm_names
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)
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print('alarm_names', alarm_names)
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print('response', response)
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def del_dashboards(type, name_prefix):
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print("[delete %s dashboards.]" % type)
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rep = cloudwatch.list_dashboards(DashboardNamePrefix=name_prefix)
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dashboard_names = []
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for m in rep.get('DashboardEntries'):
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dashboard_names.append(m.get('DashboardName'))
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response = cloudwatch.delete_dashboards(
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DashboardNames=dashboard_names
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)
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print('dashboard_names', dashboard_names)
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print('response', response)
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def lambda_handler(event, context):
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# TODO implement
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print(event)
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detail = event.get('detail', {})
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event_source = detail.get('eventSource')
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event_name = detail.get('eventName')
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event_response = detail.get('responseElements', {})
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if event_source == 'ec2.amazonaws.com':
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if event_name == 'TerminateInstances':
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instances = event_response.get('instancesSet', {})
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for item in instances.get('items', []):
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instance_id = item.get('instanceId')
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if instance_id:
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del_alarm('ec2', 'AWS_EC2_%s' % instance_id)
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del_dashboards('ec2', 'AWS_EC2_%s' % instance_id)
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elif event_source == 'rds.amazonaws.com':
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if event_name == 'DeleteDBInstance':
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dBInstanceIdentifier = event_response.get('dBInstanceIdentifier')
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engine = event_response.get('engine')
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if engine == 'mysql':
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del_alarm('mysql', 'AWS_MYSQL_%s' % dBInstanceIdentifier)
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del_dashboards('mysql', 'AWS_MYSQL_%s' % dBInstanceIdentifier)
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elif event_source == 'elasticache.amazonaws.com':
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if event_name == 'DeleteReplicationGroup':
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group_id = event_response.get('replicationGroupId')
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del_alarm('redis', 'AWS_REDIS_%s' % group_id)
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del_dashboards('redis', 'AWS_REDIS_%s' % group_id)
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elif event_source == 'elasticloadbalancing.amazonaws.com':
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if event_name == 'DeleteLoadBalancer':
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requestParameters = detail.get('requestParameters', {})
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loadBalancerArn = requestParameters.get('loadBalancerArn')
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instance_name = loadBalancerArn.split(':loadbalancer/')[1].split('/')[1]
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del_alarm('elb', 'AWS_ELB_%s' % instance_name)
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del_dashboards('elb', 'AWS_ELB_%s' % instance_name)
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return {
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'statusCode': 200,
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'body': json.dumps('add success.')
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}
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