def get_old_lt()

in eksupdate/src/boto_aws.py [0:0]

• 37 lines of code
• 8 McCabe index (conditional complexity)

def get_old_lt(asg_name,regionName):
    """Get old launc template"""
    asg_client = boto3.client("autoscaling",region_name=regionName) 
    ec2_client = boto3.client("ec2",region_name=regionName)


    old_lt_instance_ids = []
    instances = []

    response = asg_client.describe_auto_scaling_groups(
        AutoScalingGroupNames=[
            asg_name
        ]

    )
    asg_lt_name = ""
    # print(response)
    ''' finding the launch type'''
    if 'LaunchTemplate' in response['AutoScalingGroups'][0]:
        lt_id = response["AutoScalingGroups"][0]["LaunchTemplate"]["LaunchTemplateId"]
        asg_lt_name = response["AutoScalingGroups"][0]['LaunchTemplate']['LaunchTemplateName']
    elif 'MixedInstancesPolicy' in response['AutoScalingGroups'][0]:
        lt_id = response["AutoScalingGroups"][0]['MixedInstancesPolicy'][
            "LaunchTemplate"]['LaunchTemplateSpecification']["LaunchTemplateId"]
        asg_lt_name = response['AutoScalingGroups'][0]['MixedInstancesPolicy']['LaunchTemplate']['LaunchTemplateSpecification'][
            'LaunchTemplateName']

    else:
        # logs_pusher("None found","error")
        return "error"

    # print(latest_lt)
    ''' checking wethether there are instances with 1!=2 mismatch template version '''
    old_lt_instance_ids = [instance["InstanceId"] for instance in response["AutoScalingGroups"][0]
                           ["Instances"] if old_lt_secanarios(instance, asg_lt_name, int(instance["LaunchTemplate"]["Version"]))]
    if len(old_lt_instance_ids) == 0:
        return []
    response = ec2_client.describe_instances(InstanceIds=old_lt_instance_ids)
    for reservation in response["Reservations"]:
        for instance in reservation["Instances"]:
            # logs_pusher(instance,"info")
            instances.append(instance)

    return instances