GetSession API Reference for Function Compute - Function Compute - Alibaba Cloud - Function Compute

Retrieves the details of a specified session, including the session ID, associated function, affinity type, lifecycle configuration, status, and instance information. This operation queries the current metadata of a single session and supports exact matching by functionName and qualifier for external system monitoring and debugging. Only sessions in the Active state can be queried.

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Test

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

fc:GetSession

get

*All Resource

*

None

Request syntax

GET /2023-03-30/functions/{functionName}/sessions/{sessionId} HTTP/1.1

Path Parameters

Parameter	Type	Required	Description	Example
functionName	string	No	The name of the function to which the session belongs.	myFunction
sessionId	string	No	The ID of the session to query.	test-sessionid-index1

Request parameters

Parameter	Type	Required	Description	Example
qualifier	string	No	The function alias or version associated with the session ID to query.	aliasName1

Response elements

Element	Type	Description	Example
	Session	The function session information.

Examples

Success response

JSON format

{
  "sessionId": "81f70ae156904eb9b7d43e12f511fe58",
  "functionName": "functionName1",
  "sessionAffinityType": "HEADER_FIELD",
  "sessionTTLInSeconds": 21600,
  "sessionIdleTimeoutInSeconds": 1800,
  "createdTime": "2025-04-01T08:15:27Z",
  "lastModifiedTime": "2025-04-01T18:15:27Z",
  "sessionStatus": "Active",
  "containerId": "c-68999e02-16a1955c-d2a03d1ccs",
  "qualifier": "AliasName1",
  "nasConfig": {
    "groupId": 100,
    "mountPoints": [
      {
        "enableTLS": true,
        "mountDir": "/home/test",
        "serverAddr": "***-uni85.cn-hangzhou.nas.com:/"
      }
    ],
    "userId": 100
  },
  "disableSessionIdReuse": false,
  "ossMountConfig": {
    "mountPoints": [
      {
        "bucketName": "my-bucket",
        "bucketPath": "/my-dir",
        "endpoint": "http://oss-cn-shanghai.aliyuncs.com",
        "mountDir": "/mnt/dir",
        "readOnly": true
      }
    ]
  },
  "polarFsConfig": {
    "groupId": 0,
    "userId": 0,
    "mountPoints": [
      {
        "instanceId": "",
        "mountDir": "",
        "remoteDir": "",
        "readOnly": false
      }
    ]
  },
  "juiceFsConfig": {
    "mountPoints": [
      {
        "volumeName": "",
        "mountDir": "",
        "remoteDir": "",
        "token": "",
        "args": [
          ""
        ]
      }
    ],
    "envs": {
      "key": ""
    }
  },
  "enableAutoPause": false
}

Error codes

See Error Codes for a complete list.

Release notes

See Release Notes for a complete list.