aws : autoscaling waiters based on aws/aws-sdk-ruby

sample-output-of-describe-auto-scaling-groups.json

{
    "AutoScalingGroups": [
        {
            "AutoScalingGroupARN": "arn:aws:autoscaling:ap-northeast-1:123456789012:autoScalingGroup:aaaaaaaa-35cb-4f11-bf21-258b69e3c42d:autoScalingGroupName/bar", 
            "HealthCheckGracePeriod": 300, 
            "SuspendedProcesses": [], 
            "DesiredCapacity": 0, 
            "Tags": [], 
            "EnabledMetrics": [], 
            "LoadBalancerNames": [], 
            "AutoScalingGroupName": "bar", 
            "DefaultCooldown": 300, 
            "MinSize": 1, 
            "Instances": [], 
            "MaxSize": 3, 
            "VPCZoneIdentifier": "subnet-12345678", 
            "TerminationPolicies": [
                "Default"
            ], 
            "LaunchConfigurationName": "my-first-lc", 
            "CreatedTime": "2016-02-28T16:35:44.252Z", 
            "AvailabilityZones": [
                "ap-northeast-1a"
            ], 
            "HealthCheckType": "EC2", 
            "NewInstancesProtectedFromScaleIn": false
        }, 
        {
            "AutoScalingGroupARN": "arn:aws:autoscaling:ap-northeast-1:123456789012:autoScalingGroup:ca0b9366-c634-4957-96c1-7339ef423559:autoScalingGroupName/foo", 
            "HealthCheckGracePeriod": 300, 
            "SuspendedProcesses": [], 
            "DesiredCapacity": 2, 
            "Tags": [], 
            "EnabledMetrics": [], 
            "LoadBalancerNames": [
                "green"
            ], 
            "AutoScalingGroupName": "foo", 
            "DefaultCooldown": 300, 
            "MinSize": 1, 
            "Instances": [
                {
                    "ProtectedFromScaleIn": false, 
                    "AvailabilityZone": "ap-northeast-1a", 
                    "InstanceId": "i-2fc5d38a", 
                    "HealthStatus": "Healthy", 
                    "LifecycleState": "InService", 
                    "LaunchConfigurationName": "my-first-lc"
                }, 
                {
                    "ProtectedFromScaleIn": false, 
                    "AvailabilityZone": "ap-northeast-1c", 
                    "InstanceId": "i-62d8b9ed", 
                    "HealthStatus": "Healthy", 
                    "LifecycleState": "InService", 
                    "LaunchConfigurationName": "my-first-lc"
                }
            ], 
            "MaxSize": 5, 
            "VPCZoneIdentifier": "subnet-12345678", 
            "TerminationPolicies": [
                "Default"
            ], 
            "LaunchConfigurationName": "my-first-lc", 
            "CreatedTime": "2016-02-28T08:40:56.818Z", 
            "AvailabilityZones": [
                "ap-northeast-1c", 
                "ap-northeast-1a"
            ], 
            "HealthCheckType": "EC2", 
            "NewInstancesProtectedFromScaleIn": false
        }
    ]
}

waiters-2.json

{
    "version": 2,
    "waiters": {
        "GroupExists": {
            "acceptors": [
                {
                    "argument": "length(AutoScalingGroups)",
                    "expected": 1,
                    "matcher": "path",
                    "state": "success"
                }
            ],
            "delay": 5,
            "maxAttempts": 10,
            "operation": "DescribeAutoScalingGroups"
        },
        "GroupInService": {
            "acceptors": [
                {
                    "argument": "AutoScalingGroups[].[length(Instances[?LifecycleState=='InService']) >= MinSize][]",
                    "expected": true,
                    "matcher": "pathAll",
                    "state": "success"
                }
            ],
            "delay": 15,
            "maxAttempts": 40,
            "operation": "DescribeAutoScalingGroups"
        },
        "GroupNotExists": {
            "acceptors": [
                {
                    "argument": "length(AutoScalingGroups)",
                    "expected": 0,
                    "matcher": "path",
                    "state": "success"
                }
            ],
            "delay": 15,
            "maxAttempts": 40,
            "operation": "DescribeAutoScalingGroups"
        }
    }
}