Updates a function.

Request headers

In addition to common request headers, the request headers described in the following table must be specified for this operation. For more information about common request headers, see Common parameters.

Parameter Type Required Example Description
If-Match String No e19d5cd5af0378da05f63f891c7467af>

The value used to ensure that the modified resource is consistent with the resource to be modified. You can obtain the value from the responses of the CreateFunction, GetFunction, and UpdateFunction operations.

X-Fc-Code-Checksum String No 5434025278388143772>

The CRC-64 value of the function code package.

Request syntax

PUT /services/{serviceName}/functions/{functionName} 

Request parameters

Parameter Type Position Required Example Description
serviceName String Path No service_name

The name of the service.

functionName String Path No function_name

The name of the function.

code Code Body No

The code of the function. The code must be packaged into a ZIP file.

customContainerConfig CustomContainerConfig Body No

The configuration of the custom container runtime. After you configure the custom container runtime, you can use custom container images to execute functions.

description String Body No test_description

The description of the function.

environmentVariables Map Body No

The environment variables configured for the function. You can obtain the values of the environment variables from the function. For more information, see Introduction.

handler String Body No index.handler

The handler of the function. The format is determined by the programming language. For more information, see the "Function entry point" section of the Terms topic.

memorySize Integer Body No 512

The memory size for the function. Unit: MB. The memory size must be a multiple of 64 MB. Different types of instances are allocated different memory sizes. For more information, see the "Instance specifications" section of the Instance specifications and usage modes topic.

runtime String Body No python3

The runtime environment of the function. Valid values: nodejs4.4, nodejs6, nodejs8, nodejs10, nodejs12, python2.7, python3, java8, java11, php7.2, dotnetcore2.1, custom, and custom-container.

timeout String Body No 60

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.

initializationTimeout Integer Body No 60

The timeout period for the execution of the initializer function. Unit: seconds. Default value: 3. Valid values: 1 to 300. When this period expires, the execution of the initializer function is terminated.

initializer String Body No index.handler

The handler of the initializer function. The format is determined by the programming language. For more information, see the "Initializer function" section of the Terms topic.

caPort Integer Body No 9000

The port on which the HTTP server listens for the custom runtime or custom container runtime.

Function code packages can be provided in the following two methods. You must use only one of the methods in a single request.

  • Specify the names of the Object Storage Service (OSS) bucket and object where the code package is stored.
  • Specify that the zipFile parameter is used as the Base64-encoded content of the ZIP file.

Response parameters

Parameter Type Example Description
ETag String e19d5cd5af0378da05f63f891c7467af

The value used to ensure that the modified function is consistent with the function to be modified. The value is obtained from the responses of the CreateFunction, GetFunction, and UpdateFunction operations.

codeChecksum String 2825179536350****

The CRC-64 value of the function code package.

codeSize Long 421

The size of the function code package. Unit: byte.

createdTime String 2020-04-01T08:14:58Z

The time when the function was created.

customContainerConfig CustomContainerConfig

The configuration of the custom container runtime. After you configure the custom container runtime, you can use custom container images to execute functions.

description String test_description

The description of the function.

environmentVariables Map

The environment variables configured for the function. The values of the environment variables are obtained from the function. For more information, see Introduction.

functionId String e68905d5-f81c-4238-a5e4-***

The ID generated by the system for the function. Each function ID is unique in Function Compute.

functionName String function_name

The name of the function.

handler String index.handler

The handler of the function. The format is determined by the programming language. For more information, see the "Function entry point" section of the Terms topic.

lastModifiedTime Long 2016-08-15T17:00:00.000+0000

The last time when the function was updated.

memorySize Integer 512

The memory size for the function. Unit: MB. The memory size must be a multiple of 64 MB. Different types of instances are allocated different memory sizes. For more information, see the "Instance specifications" section of the Instance specifications and usage modes topic.

runtime String python3

The runtime environment of the function. Valid values: nodejs4.4, nodejs6, nodejs8, nodejs10, nodejs12, python2.7, python3, java8, java11, php7.2, dotnetcore2.1, custom, and custom-container.

timeout Integer 10

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.

initializationTimeout Integer 60

The timeout period for the execution of the initializer function. Unit: seconds. Default value: 3. Valid values: 1 to 300. When this period expires, the execution of the initializer function is terminated.

initializer String index.handler

The handler of the initializer function. The format is determined by the programming language. For more information, see the "Initializer function" section of the Terms topic.

caPort Integer 9000

The port on which the HTTP server listens for the custom runtime or custom container runtime.

Examples

Sample requests

PUT /2016-08-15/services/service_name/functions/function_name HTTP/1.1
Common request headers
{
    "handler":"index.handler",
    "cAPort":9000,
    "code":{
        "zipFile":"samplecode"
    }
}

Sample success responses

JSON format

HTTP/1.1 200
ETag:e19d5cd5af0378da05f63f891c7467af
Content-Type:application/json
HTTP/1.1 200 OK
Common response headers
{
  "functionId": "e68905d5-f81c-4238-a5e4-***",
  "functionName": "function_name",
  "description": "test_description",
  "cAPort": 9000,
  "runtime": "python3",
  "handler": "index.handler",
  "timeout": 60,
  "initializer": "index.handler",
  "initializationTimeout": 30,
  "codeSize": 421,
  "codeChecksum": "2825179536350****",
  "memorySize": 256,
  "environmentVariables": {
    "testKey": "TEST_KEY"
  },
  "createdTime": "2020-04-01T08:14:58Z",
  "lastModifiedTime": "2020-04-02T06:30:56Z",
  "instanceConcurrency": 1
}