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OpenSearch:GetFunctionDefaultInstance

Last Updated:Dec 09, 2025

Queries the default algorithm instance for an application.

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RAM authorization

The table below describes the authorization required to call this API. You can define it in a Resource Access Management (RAM) policy. The table's columns are detailed below:

  • Action: The actions can be used in the Action element of RAM permission policy statements to grant permissions to perform the operation.

  • API: The API that you can call to perform the action.

  • Access level: The predefined level of access granted for each API. Valid values: create, list, get, update, and delete.

  • Resource type: The type of the resource that supports authorization to perform the action. It indicates if the action supports resource-level permission. The specified resource must be compatible with the action. Otherwise, the policy will be ineffective.

    • For APIs with resource-level permissions, required resource types are marked with an asterisk (*). Specify the corresponding Alibaba Cloud Resource Name (ARN) in the Resource element of the policy.

    • For APIs without resource-level permissions, it is shown as All Resources. Use an asterisk (*) in the Resource element of the policy.

  • Condition key: The condition keys defined by the service. The key allows for granular control, applying to either actions alone or actions associated with specific resources. In addition to service-specific condition keys, Alibaba Cloud provides a set of common condition keys applicable across all RAM-supported services.

  • Dependent action: The dependent actions required to run the action. To complete the action, the RAM user or the RAM role must have the permissions to perform all dependent actions.

Action

Access level

Resource type

Condition key

Dependent action

opensearch:DescribeFunction

get

*FunctionDefaultInstance

acs:opensearch:{#regionId}:{#accountId}:apps/{#AppGroupId}

None None

Request syntax

GET /v4/openapi/app-groups/{appGroupIdentity}/functions/{functionName}/default-instance HTTP/1.1

Path Parameters

Parameter

Type

Required

Description

Example

appGroupIdentity

string

Yes

The name of the application.

my_app_group_name

functionName

string

Yes

The name of the feature.

ctr

Request parameters

Parameter

Type

Required

Description

Example

No parameters required.

Sample request

GET /v4/openapi/app-groups/my-app/functions/pop/default-instances

Response elements

Element

Type

Description

Example

object

The response body.

Status

string

The request status.

OK

HttpCode

integer

The HTTP status code.

200

RequestId

string

The ID of the request.

062BA91F-A568-5779-8A5B-9E62C9BB3DC1

Message

string

The error message.

default instance not set.

Code

string

The error code.

DefaultInstance.NotExist

Result

object

The result.

{'Pagination': {'TotalCount': 0, 'PageNumber': 1, 'PageSize': 10}, 'AntConsortiums': []}

InstanceName

string

The default instance name.

model1

Latency

integer

The default runtime.

123

InstanceName

string

The name of the instance.

sh-bp1oi31w1jn4ctdyv

FunctionName

string

The name of the feature.

cdn_waf

Sample responses

{
    "status": "OK",
    "requestId": "",
    "httpCode": 200,
    "code": "",
    "message": "",
    "latency": 123,
    "result": {
        "instanceName": "pop_test"
    }
}

Examples

Success response

JSON format

{
  "Status": "OK",
  "HttpCode": 200,
  "RequestId": "062BA91F-A568-5779-8A5B-9E62C9BB3DC1",
  "Message": "default instance not set.",
  "Code": "DefaultInstance.NotExist",
  "Result": {
    "InstanceName": "model1"
  },
  "Latency": 123,
  "InstanceName": "sh-bp1oi31w1jn4ctdyv",
  "FunctionName": "cdn_waf"
}

Error codes

See Error Codes for a complete list.

Release notes

See Release Notes for a complete list.