GetFunction - Function Compute

Queries the information about a function.

Debugging

OpenAPI Explorer automatically calculates the signature value. For your convenience, we recommend that you call this operation in OpenAPI Explorer.

Debug

Authorization information

The following table shows the authorization information corresponding to the API. The authorization information can be used in the Action policy element to grant a RAM user or RAM role the permissions to call this API operation. Description:

Operation: the value that you can use in the Action element to specify the operation on a resource.
Access level: the access level of each operation. The levels are read, write, and list.
Resource type: the type of the resource on which you can authorize the RAM user or the RAM role to perform the operation. Take note of the following items:
- The required resource types are displayed in bold characters.
- If the permissions cannot be granted at the resource level, All Resources is used in the Resource type column of the operation.
Condition Key: the condition key that is defined by the cloud service.
Associated operation: other operations that the RAM user or the RAM role must have permissions to perform to complete the operation. To complete the operation, the RAM user or the RAM role must have the permissions to perform the associated operations.

Operation	Access level	Resource type	Condition key	Associated operation
fc:GetFunction	get	All Resources *	none	none

Request syntax

GET /2021-04-06/services/{serviceName}/functions/{functionName} HTTP/1.1

Request parameters

Parameter	Type	Required	Description	Example
serviceName	string	Yes	The name of the service.	service_name
qualifier	string	No	The version or alias of the service.	demoQualifier
functionName	string	Yes	The name of the function.	function_name
X-Fc-Account-Id	string	No	The ID of your Alibaba Cloud account.	188077086902****
X-Fc-Date	string	No	The time on which the function is invoked. The format of the value is: EEE,d MMM yyyy HH:mm:ss GMT.	Wed, 11 May 2022 09:00:00 GMT
X-Fc-Trace-Id	string	No	The custom request ID.	asdf****

Response parameters

Parameter	Type	Description	Example
headers	object
ETag	string	The ETag value of the function. This value is used to ensure that the modified function is consistent with the function to be modified.	function_name
	object	The definition of the function.
codeChecksum	string	The CRC-64 value of the function code package.	2825179536350****
codeSize	long	The size of the function code package. Unit: byte.	421
createdTime	string	The time when the function was created.	2020-04-01T08:15:27Z
description	string	The description of the function.	test_description
environmentVariables	object	The environment variables that are configured for the function. You can obtain the values of the environment variables from the function. For more information, see Environment variables.
	string	The environment variables that you configured for the function.	{"key":"value"}
functionId	string	The ID that is generated by the system for the function. Each function ID is unique in Function Compute.	aa715851-1c20-4b89-a8fb-***
functionName	string	The name of the function.	function_name
handler	string	The handler of the function. For more information, see Function handler.	index.handler
lastModifiedTime	string	The time when the function was last modified.	2020-04-01T08:15:27Z
memorySize	integer	The memory size for the function. Unit: MB. The value must be a multiple of 64. The memory size varies based on the function instance type. For more information, see Instance types.	256
runtime	string	The runtime of the function. Valid values: nodejs20, nodejs18, nodejs16, nodejs14, nodejs12, nodejs10, nodejs8, nodejs6, nodejs4.4, python3.10, python3.9, python3, python2.7, java11, java8, go1, php7.2, dotnetcore2.1, custom.debian10, custom, and custom-container.	python3
timeout	integer	The timeout period for the execution of the function. Unit: seconds. Default value: 60. Valid values: 1 to 600. When this period expires, the execution of the function is terminated.	60
initializationTimeout	integer	The timeout period for the execution of the Initializer hook. Unit: seconds. Default value: 3. Valid values: 1 to 300. When this period ends, the execution of the Initializer hook is terminated.	60
initializer	string	The handler of the Initializer hook. The format of the value is determined by the programming language that you use. For more information, see Initializer hook.	index.handler
caPort	integer	The port on which the HTTP server listens for the custom runtime or custom container runtime.	9000
customContainerConfig	CustomContainerConfigInfo	The configurations of the Custom Container runtime. After you configure the Custom Container runtime, you can use a custom container image to execute functions.
layers	array	The list of layers (ARN V1). Note If multiple layers exist, the layers are merged based on the array subscripts in descending order. The content of a layer with a smaller subscript overwrites that of a larger subscript. Note This parameter is to be deprecated. Use layersArnV2.
layer	string	The name of the layer resource (ARN V1 version).	02f81d283888f5ec63442a88fe82b260#Layer-name#1
instanceConcurrency	integer	The number of requests that can be concurrently processed by a single instance.	10
instanceSoftConcurrency	integer	The soft concurrency of the instance. You can use this parameter to implement graceful scale-up of instances. If the number of concurrent requests on an instance is greater than the value of soft concurrency, an instance scale-up is triggered. For example, if your instance requires a long time to start, you can specify a suitable soft concurrency to start the instance in advance. The value must be less than or equal to that of the instanceConcurrency parameter.	5
instanceType	string	The instance type of the function. Valid values: e1: elastic instances c1: performance instances fc.gpu.tesla.1: GPU-accelerated instances with Tesla series cards fc.gpu.ampere.1: GPU-accelerated instances with Ampere series cards fc.gpu.ada.1:GPU-accelerated instances with Ada series cards g1: same as fc.gpu.tesla.1	e1
instanceLifecycleConfig	InstanceLifecycleConfig	The lifecycle configurations of instances.
customDNS	CustomDNS	The custom Domain Name System (DNS) settings of the function.
customRuntimeConfig	CustomRuntimeConfig	The configurations of the function that runs in the custom runtime.
customHealthCheckConfig	CustomHealthCheckConfig	The custom health check configurations of the function. This parameter is applicable only to custom runtimes and Custom Container runtimes.
layersArnV2	array	The list of layers (ARN V2). Note If multiple layers exist, the layers are merged based on the array subscripts in descending order. The content of a layer with a smaller subscript overwrites that of a larger subscript.
layer	string	The name of the layer resource (ARN V2 version).	acs:fc:{region}:{accountID}:layers/{layerName}/versions/{layerVersion}
cpu	float	The number of vCPUs of the function. The value must be a multiple of 0.05.	1.5
diskSize	integer	The disk size of the function. Unit: MB. Valid values: 512 and 10240.	512
gpuMemorySize	integer	The GPU memory capacity for the function. Unit: MB. The value is a multiple of 1,024.	2048

Examples

Sample success responses

JSONformat

{
  "codeChecksum": "2825179536350****",
  "codeSize": 421,
  "createdTime": "2020-04-01T08:15:27Z",
  "description": "test_description",
  "environmentVariables": {
    "key": "{\"key\":\"value\"}"
  },
  "functionId": "aa715851-1c20-4b89-a8fb-***",
  "functionName": "function_name",
  "handler": "index.handler",
  "lastModifiedTime": "2020-04-01T08:15:27Z",
  "memorySize": 256,
  "runtime": "python3",
  "timeout": 60,
  "initializationTimeout": 60,
  "initializer": "index.handler",
  "caPort": 9000,
  "customContainerConfig": {
    "args": "[\"-arg1\", \"value1\"]",
    "command": "[\"/code/myserver\"]",
    "image": "registry-vpc.cn-hangzhou.aliyuncs.com/fc-demo/helloworld:v1beta1",
    "accelerationType": "Default",
    "accelerationInfo": {
      "status": "Preparing"
    },
    "instanceID": "cri-xxxxxxxxxx",
    "webServerMode": true
  },
  "layers": [
    "02f81d283888f5ec63442a88fe82b260#Layer-name#1"
  ],
  "instanceConcurrency": 10,
  "instanceSoftConcurrency": 5,
  "instanceType": "e1",
  "instanceLifecycleConfig": {
    "preFreeze": {
      "handler": "",
      "timeout": 0
    },
    "preStop": {
      "handler": "",
      "timeout": 0
    }
  },
  "customDNS": {
    "nameServers": [
      "8.8.8.8"
    ],
    "searches": [
      "ns1.svc.cluster-domain.example"
    ],
    "dnsOptions": [
      {
        "name": "ndots",
        "value": "2"
      }
    ]
  },
  "customRuntimeConfig": {
    "command": [
      "/code/myBootstrap"
    ],
    "args": [
      "args1"
    ]
  },
  "customHealthCheckConfig": {
    "httpGetUrl": "",
    "initialDelaySeconds": 0,
    "periodSeconds": 0,
    "timeoutSeconds": 0,
    "failureThreshold": 0,
    "successThreshold": 0
  },
  "layersArnV2": [
    "acs:fc:{region}:{accountID}:layers/{layerName}/versions/{layerVersion}"
  ],
  "cpu": 1.5,
  "diskSize": 512,
  "gpuMemorySize": 2048
}

Error codes

For a list of error codes, visit the Service error codes.

Change history

Change time	Summary of changes	Operation
2023-07-27	The response structure of the API has changed	View Change Details
2021-06-30	The request parameters of the API has changed	View Change Details
2021-06-30	The request parameters of the API has changed. The response structure of the API has changed	View Change Details
2021-06-30	The request parameters of the API has changed. The response structure of the API has changed	View Change Details