Querying Instance Suspension

Function

After a lifecycle hook is added, when an AS group performs a scaling action, the lifecycle hook suspends the target instance and sets it to be in waiting state. You can query the instance suspension based on search criteria.

Search instance suspension by instance ID.
If no search criteria are specified, the suspension about all instances in the specified AS group is queried by default.

URI

GET /autoscaling-api/v1/{project_id}/scaling_instance_hook/{scaling_group_id}/list

You can type the question mark (?) and ampersand (&) at the end of the URI to define multiple search criteria. Instance suspension can be searched by all optional parameters in the following table. For details, see the example request.

**Table 1** Parameter description
Parameter	Mandatory	Type	Description
project_id	Yes	String	Specifies the project ID.
scaling_group_id	Yes	String	Specifies the AS group ID.
instance_id	No	String	Specifies the AS instance ID.

Request Message

Request parameters
None
Example request
This example shows how to query the suspension of the instance with ID b25c1589-c96c-465b-9fef-d06540d1945c in the AS group with ID e5d27f5c-dd76-4a61-b4bc-a67c5686719a.
```
GET https://{Endpoint}/autoscaling-api/v1/{project_id}/scaling_instance_hook/e5d27f5c-dd76-4a61-b4bc-a67c5686719a/list?instance_id=b25c1589-c96c-465b-9fef-d06540d1945c
```

Response Message

Response parameters

**Table 2** Response parameters
Parameter	Type	Description
instance_hanging_info	Array of instance_hanging_info objects	Specifies lifecycle hook information about an AS instance.

**Table 3** **instance_hanging_info** field description
Parameter	Type	Description
lifecycle_hook_name	String	Specifies the lifecycle hook name.
lifecycle_action_key	String	Specifies the lifecycle action key, which determines the lifecycle callback object.
instance_id	String	Specifies the AS instance ID.
scaling_group_id	String	Specifies the AS group ID.
lifecycle_hook_status	String	Specifies the lifecycle hook status. HANGING: suspends the instance. CONTINUE: continues the instance. ABANDON: terminates the instance.
timeout	String	Specifies the timeout duration in the format of "YYYY-MM-DDThh:mm:ssZ". The time is UTC-compliant.
default_result	String	Specifies the default lifecycle hook callback operation.

Example response

{
    "instance_hanging_info": [
        {
            "instance_id": "b25c1589-c96c-465b-9fef-d06540d1945c",
            "scaling_group_id": "e5d27f5c-dd76-4a61-b4bc-a67c5686719a",
            "lifecycle_hook_name": "hook-test",
            "lifecycle_action_key": "6ebe6e72-4b09-4adb-ae4a-a91dc0560069",
            "default_result": "ABANDON",
            "timeout": "2016-11-15T06:43:41Z",
            "lifecycle_hook_status": "HANGING"
        }
    ]
}

Returned Values

Normal
200

Abnormal

Returned Value	Description
400 Bad Request	The server failed to process the request.
401 Unauthorized	You must enter the username and password to access the requested page.
403 Forbidden	You are forbidden to access the requested page.
404 Not Found	The server could not find the requested page.
405 Method Not Allowed	You are not allowed to use the method specified in the request.
406 Not Acceptable	The response generated by the server could not be accepted by the client.
407 Proxy Authentication Required	You must use the proxy server for authentication so that the request can be processed.
408 Request Timeout	The request timed out.
409 Conflict	The request could not be processed due to a conflict.
500 Internal Server Error	Failed to complete the request because of an internal service error.
501 Not Implemented	Failed to complete the request because the server does not support the requested function.
502 Bad Gateway	Failed to complete the request because the request is invalid.
503 Service Unavailable	Failed to complete the request because the system is unavailable.
504 Gateway Timeout	A gateway timeout error occurred.