CTS Event Source

FunctionGraph’s CTS trigger (Cloud Trace Service Trigger) is a trigger type based on the Cloud Trace Service (CTS) that can monitor and respond to OpenTelekomCloud resource operation events.

Through CTS triggers, you can implement security auditing, compliance monitoring, automated response, event notification, and other functions.

CTS triggers are particularly suitable for scenarios that require real-time monitoring of cloud resource operations, security auditing, and automated operations, such as resource change monitoring, security event response, compliance checks, operation log analysis, etc.

According to the CTS cloud audit service type and the event notification required for the operation subscription, when the CTS cloud audit service obtains the subscribed operation record, the collected operation record is passed as a parameter (CTS sample event) through the CTS trigger to call the FunctionGraph function.

Through the function, the key information in the log is analyzed and processed, and the system, network and other business modules are automatically repaired, or alarms are generated through SMS, email, etc. to notify business personnel to handle.

For details, see Using a CTS Trigger.

CTS example event

cts_event.json

{
  "cts": {
      "time": 1529996047,
      "user": {
          "name": "userName",
          "id": "5b726c4fbfd84821ba866bafaaf56aax",
          "domain": {
              "name": "domainName",
              "id": "b2b3853af40448fcb9e40dxj89505ba"
          }
      },
      "request": {},
      "response": {},
      "code": 204,
      "service_type": "FunctionGraph",
      "resource_type": "graph",
      "resource_name": "workflow-2be1",
      "resource_id": "urn:fgs:region:projectId:graph:workflow-2be1",
      "trace_name": "deleteGraph",
      "trace_type": "ConsoleAction",
      "record_time": 1529996047,
      "trace_id": "69be64a7-0233-11e8-82e4-e5d37911193e",
      "trace_status": "normal"
  }
}

Parameter description

Parameter	Type	Description
time	Int	(Epoch timestamp in milliseconds)
user	Map	Information about the user who initiated this request
request	Map	Event request content
response	Map	Incident response content
code	Int	Event response code, such as 200, 400
service_type	String	Abbreviation of the sender, such as vpc, ecs, etc.
resource_type	String	The sender resource type, such as vm, vpn, etc.
resource_name	String	Resource name, such as the name of a virtual machine in the ecs service
trace_name	String	Event name, such as: startServer, shutDown, etc.
trace_type	String	The event source type, such as ApiCall
record_time	String	The time when the cts service receives this trace (Epoch timestamp in milliseconds)
trace_id	String	Unique identifier for the event
trace_status	String	Status of the event

For full description of all parameters see CTS Event Reference.

Example

last updated: 2026-01-07 09:53:05 UTC - commit: b52ca97e4a0ec4c999820539460bd4ab093efa89