Function Model

The function model of FunctionGraph is as follows:

{ 
  "functions": [ 
   { 
    "func_urn": "urn:fss:xxxxxxxxx:7aad83af3e8d42e99ac194e8419e2c9b:function:default:test", 
    "func_name": "test", 
    "domain_id": "cff01_hk", 
    "namespace": "7aad83af3e8d42e99ac194e8419e2c9b", 
    "project_name": "xxxxxxxxxx", 
    "package": "default", 
    "runtime": "Node.js6.10", 
    "timeout": 3, 
    "handler": "test.handler", 
    "memory_size": 128, 
    "cpu": 300, 
    "code_type": "inline", 
    "code_url": "", 
    "code_filename": "index.js", 
    "code_size": 272, 
    "user_data": "", 
    "digest": "decbce6939297b0b5ec6d1a23bf9c725870f5e69fc338a89a6a4029264688dc26338f56d08b6535de47f15ad538e22ca66613b9a46f807d50b687bb53fded1c6", 
    "version": "latest", 
    "image_name": "latest-5qe8e", 
    "xrole": "cff",
    "app_xrole": null, 
    "description": "111", 
    "version_description": "", 
    "last_modified": "2018-03-28T11:30:32+08:00",
"func_code": {
  "file": "",
  "link": ""
 },
 "func_vpc":null,
 "mount_config":null,
 "depend_list": null,
 "strategy_config": {
     "concurrency": -1
 },
 "extend_config": "",
 "dependencies": null,
"initializer_handler": "index.initializer",
"initializer_timeout": 3  
   } 
  ], 
  "next_marker": 45 
 }

Description

Table 1 describes the parameters in the function model.

**Table 1** Parameters in the function model
Parameter	Description
func_urn	Function URN.
func_name	Function name.
domain_id	Tenant name.
namespace	Project ID.
project_name	Project name.
package	Group to which the function belongs. This field is defined to group functions.
runtime	Environment for executing the function. FunctionGraph supports Node.js 6.10, Node.js 8.10, Node.js 10.16, Node.js 12.13, Python 2.7, Python 3.6, Java 8, Go 1.8, C# (.NET Core 2.0), C# (.NET Core 2.1), C# (.NET Core 3.1), and PHP 7.3.
timeout	Maximum duration the function can be executed. Value range: 3s–900s.
handler	Handler of the function in the format of "xx.xx". It must contain a period (.). For example, for Node.js function myfunction.handler, the file name is myfunction.js, and the entry point function is handler.
memory_size	Memory (MB) consumed by the function. Options: 128, 256, 512, 768, 1024, 1280, 1536, 1792, 2048, 2560, 3072, 3584, and 4096.
cpu	Number of CPU millicores used by the function (1 core = 1000 millicores). The value of this field is proportional to that of MemorySize. By default, 100 CPU millicores are required for 128 MB memory. The value is calculated as follows: Memory/128 x 100 + 200 (basic CPU millicores).
code_type	Function code type. Options: inline: inline code zip: ZIP file jar: JAR file (mainly for Java functions) obs: function code stored in an Object Storage Service (OBS) bucket
code_url	When code_type is set to obs, this parameter indicates the address of a function code package in OBS. When code_type is set to inline, zip, or jar, this parameter is left blank.
code_filename	Function file name. When code_type is set to zip or jar, this parameter is required. When code_type is set to obs or inline, this parameter is not required.
code_size	Code size in bytes.
user_data	Name/Value information defined for the function. For example, if a function needs to access a host, define Host={host_ip}. You can define a maximum of 20 such parameters, and their total length cannot exceed 4 KB.
digest	SHA512 hash value of function code, which is used to determine whether the function is changed.
version	Function version, which is automatically generated by the system. The version name is in the format of "vYYYYMMDD-HHMMSS" (v+year/month/day-hour/minute/second).
image_name	Internal identifier of a function version.
xrole	Agency used by the function. You need to create an agency on the Identity and Access Management (IAM) console. This field is mandatory when a function needs to access other services.
app_xrole	Agency used by the function app. You need to create an agency on the IAM console. This field is mandatory when a function needs to access other services.
description	Description of the function.
version_description	Description of the function version.
last_modified	Time when the function was last updated.
func_code	Function code. See Table 2.
depend_list	Dependency list.
strategy_config	Function policy configuration. See Table 3.
extend_config	Function extension configuration.
dependencies	Dependency list. See Table 5.
initializer_handler	Initializer of the function in the format of "xx.xx". It must contain a period (.). For example, for Node.js function myfunction.initializer, the file name is myfunction.js, and the initialization function is initializer.
initializer_timeout	Maximum duration the function can be initialized. Value range: 1s–300s.
func_vpc	Virtual Private Cloud (VPC) configuration. See Table 4.
mount_config	File system configuration. See Table 6.

**Table 2** func_code parameters
Parameter	Description
file	Function code. Nothing will be returned.
link	Function code link. Nothing will be returned.

**Table 3** strategy_config parameter
Parameter	Description
concurrency	0: The function is disabled. -1: The function is enabled.

**Table 4** func_vpc parameters
Parameter	Type	Mandatory	Description
vpc_name	String	-	VPC name.
vpc_id	String	Yes when func_vpc is not empty.	VPC ID.
subnet_name	String	-	Subnet name.
subnet_id	String	Yes when func_vpc is not empty.	Subnet ID.
cidr	String	-	Subnet mask.
gateway	String	-	Gateway.

**Table 5** dependency parameters
Parameter	Type	Mandatory	Description
owner	String	-	Domain ID of the dependency owner.
link	String	-	URL of the dependency package on OBS.
runtime	String	-	Language of the dependency package (only used for classification purposes).
etag	String	-	MD5 value of the dependency package.
size	Int	-	Size of the dependency package.
name	String	-	Name of the dependency package.
description	String	-	Description of the dependency package.
file_name	String	-	File name of the dependency package (ZIP).

**Table 6** mount_config parameters
Parameter	Type	Mandatory	Description
mount_user	mount_user	-	File system user configuration.
func_mounts	func_mounts	-	File system list.

**Table 7** mount_user parameters
Parameter	Type	Mandatory	Description
user_id	Int	Yes when mount_user is not empty.	User ID, which is an integer from –1 to 65,534, excluding 0, 1000, and 1002.
user_group_id	Int	Yes when mount_user is not empty.	User group ID, which is an integer from –1 to 65,534, excluding 0, 1000, and 1002.

**Table 8** func_mounts parameters
Parameter	Type	Mandatory	Description
mount_type	String	Yes when func_mounts is not empty.	Mount type. Options: ecs.
mount_resource	String	Yes when func_mounts is not empty.	ID of the mounted resource (corresponding cloud service).
mount_share_path	String	Yes when mount_type is set to ecs.	Remote mount path. Example: 192.168.0.12:/data.
local_mount_path	String	Yes when func_mounts is not empty.	Function access path.

The format of a function URN is as follows:

urn:fss:<region_id>:<project_id>:function:<package>:<function_name>[:<version>|:!<alias>]

A function URN is divided into eight fields by colons. The value of region_id is included in the system configuration. You can set this parameter to the same as that in the backend. The content in the brackets ([]) is a function version or alias. If you enter an alias, add an exclamation mark (!) in front of it for easy identification.

When a function URN is used as an API parameter, you can provide it in a simplified format as follows:

1 field: <function_name>. project_id is obtained from a token, package is default, and version is latest.
2 fields: <package>:<function_name>. project_id is obtained from a token, and version is latest.
3 fields: <project_id>:<package>:<function_name>. version is latest.
4 fields: <project_id>:<package>:<function_name>:<Version or Alias>.
7 fields: urn:fss:<region_id>:<project_id>:function:<package>:<function_name>. version is latest.
8 fields: urn:fss:<region_id>:<project_id>:function:<package>:<function_name>:<Version or Alias>.