DescribeFCTrigger - CDN - Alibaba Cloud Documentation Center

Queries a specified Function Compute trigger.

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
cdn:DescribeFCTrigger	get	All Resources *	none	none

Request parameters

Parameter	Type	Required	Description	Example
TriggerARN	string	Yes	The trigger that corresponds to the Function Compute service.	acs:cdn:{RegionID}:{AccountID}:{Filter}

Response parameters

Parameter	Type	Description	Example
	object
RequestId	string	The ID of the request.	EC046C5D-8CB4-4B6B-B7F8-B335E51EF90E
FCTrigger	object	The Function Compute trigger that you want to query.
TriggerARN	string	The trigger that corresponds to the Function Compute service.	acs:fc:cn-beijing: 1234567890:services/FCTestService/functions/printEvent/triggers/testtrigger
RoleARN	string	The assigned Resource Access Management (RAM) role.	acs:ram:: 1234567890:role/aliyuncdneventnotificationrole
SourceArn	string	The resources and filters for event listening.	acs:cdn:*:1234567890:domain/example.com
Notes	string	The remarks of the Function Compute trigger.	test
EventMetaName	string	The name of the event.	LogFileCreated
EventMetaVersion	string	The version of the event.	1.0.0

SourceArn

SourceArn format: acs:cdn:{RegionID}:{AccountID}:{Filter}.

Filter indicates the resource and filter in the format of {FilterName}/{FilterValue}. If you want to specify multiple values for FilterValue, separate the values with commas (,) and enclose them with braces ({}).
In this example, the LogFileCreated event supports a filter of which FilterName is set to domain. Function Compute can be triggered only by example.com if Filter is set to domain/example.com. Function Compute can be triggered by multiple domains if Filter is set to domain/{example.com,aliyun.com}.
Separate filters with forward slashes (/). Set the logical operator among filters to AND. Format: acs:cdn:{RegionID}:{AccountID}:{Filter1}/{Filter2}/{Filter3}....

Examples

Sample success responses

JSONformat

{
  "RequestId": "EC046C5D-8CB4-4B6B-B7F8-B335E51EF90E",
  "FCTrigger": {
    "TriggerARN": "acs:fc:cn-beijing: 1234567890:services/FCTestService/functions/printEvent/triggers/testtrigger",
    "RoleARN": "acs:ram:: 1234567890:role/aliyuncdneventnotificationrole",
    "SourceArn": "acs:cdn:*:1234567890:domain/example.com",
    "Notes": "test",
    "EventMetaName": "LogFileCreated",
    "EventMetaVersion": "1.0.0"
  }
}

Error codes

HTTP status code	Error code	Error message
403	PermissionDeny	No permission to operate this FCTrigger.
404	NotFound.FCTrigger	FCTrigger not found.

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