Event Trace Logs

The following are the synopsis of the Event Trace logs to trigger session management policies towards the SMF:

  • Event Trace logs provide an execution sequence for a session. It represents the following:

    • Message Type

    • Event Type—Incoming or Outgoing or Internal submitted event type.

    • Procedure Type and Procedure Instance—Where the message is associated with.

    • Txn ID—Where the message is associated with.

    • Timestamp—For the same message associated with

  • Event Trace logs also describe other events as the following:

    • Local2DB—When the session details are derived into a primitive structure.

    • DB2Local—When the session details aren’t derived from DB to Session DS.

    • Procedure Events—When it conveys the END or SUSPEND or ABORT or CLEANUP events also.

Sample Dump for Event Trace Logs

The following is a sample dump for Event Trace logs:

2020/09/10 13:16:16.177 smf-service [DEBUG] [Genericutil.go:5739] [smf-service0.smf-app.event-trace] EVENT TRACE SessionKeys[[imsi-123456789012345:5 (pk)]]
CurIndex:[31], CurProcInst:[1], CreateTimeStamp:[2020-09-10 13:16:15.503 +0000 UTC], BaseTimeStamp:[2020-09-10 13:16:15.503 +0000 UTC]
|INDEX|EVENT NAME                         |EVENT TYPE           |PROC NAME                                           |PROC INST |TXN ID    |TIMESTAMP                          |

|1    |N11SmContextCreateReq              |INCOMING_EVENT       |PDU Session Establishment                           |1         |1776      |2020-09-10 13:16:15.503 +0000 UTC  |
|2    |N10RegistrationRequest             |OUTGOING_EVENT       |PDU Session Establishment                           |1         |1776      |2020-09-10 13:16:15.525 +0000 UTC  |
|3    |N10RegistrationSuccess             |INCOMING_EVENT       |PDU Session Establishment                           |1         |1776      |2020-09-10 13:16:15.605 +0000 UTC  |
|4    |N10SubscriptionFetchReq            |OUTGOING_EVENT       |PDU Session Establishment                           |1         |1776      |2020-09-10 13:16:15.606 +0000 UTC  |
|5    |N10SubscriptionFetchSuccess        |INCOMING_EVENT       |PDU Session Establishment                           |1         |1776      |2020-09-10 13:16:15.644 +0000 UTC  |
|6    |N10SubscribeForNotificationReq     |OUTGOING_EVENT       |PDU Session Establishment                           |1         |1776      |2020-09-10 13:16:15.65 +0000 UTC   |
|7    |N10SubscribeForNotificationSuccess |INCOMING_EVENT       |PDU Session Establishment                           |1         |1776      |2020-09-10 13:16:15.67 +0000 UTC   |
|8    |NIntSelfTxnPduSetup                |INTERNAL_EVENT       |PDU Session Establishment                           |1         |1777      |2020-09-10 13:16:15.67 +0000 UTC   |
|9    |Message Type None                  |LOCAL_2_DB           |Unknown                                             |0         |0         |2020-09-10 13:16:15.671 +0000 UTC  |
|10   |N11SmContextCreateSuccess          |OUTGOING_EVENT       |PDU Session Establishment                           |1         |1776      |2020-09-10 13:16:15.711 +0000 UTC  |
|11   |NIntSelfTxnPduSetup                |INCOMING_EVENT       |PDU Session Establishment                           |1         |1777      |2020-09-10 13:16:15.712 +0000 UTC  |
|12   |N7SmPolicyCreateReq                |OUTGOING_EVENT       |PDU Session Establishment                           |1         |1777      |2020-09-10 13:16:15.712 +0000 UTC  |
|13   |N7SmPolicyCreateSuccess            |INCOMING_EVENT       |PDU Session Establishment                           |1         |1777      |2020-09-10 13:16:15.797 +0000 UTC  |
|14   |NmgrRersourceMgmtRequest           |OUTGOING_EVENT       |PDU Session Establishment                           |1         |1777      |2020-09-10 13:16:15.805 +0000 UTC  |
|15   |NmgrRersourceMgmtResponse          |INCOMING_EVENT       |PDU Session Establishment                           |1         |1777      |2020-09-10 13:16:15.814 +0000 UTC  |
|16   |N7SmPolicyUpdateReq                |OUTGOING_EVENT       |PDU Session Establishment                           |1         |1777      |2020-09-10 13:16:15.823 +0000 UTC  |
|17   |N7SmPolicyUpdateSuccess            |INCOMING_EVENT       |PDU Session Establishment                           |1         |1777      |2020-09-10 13:16:15.853 +0000 UTC  |
|18   |N40ChargingDataReq                 |OUTGOING_EVENT       |PDU Session Establishment                           |1         |1777      |2020-09-10 13:16:15.854 +0000 UTC  |
|19   |N40ChargingDataSuccess             |INCOMING_EVENT       |PDU Session Establishment                           |1         |1777      |2020-09-10 13:16:15.912 +0000 UTC  |
|20   |N4SessionEstablishmentReq          |OUTGOING_EVENT       |PDU Session Establishment                           |1         |1777      |2020-09-10 13:16:15.921 +0000 UTC  |
|21   |N4SessionEstablishmentSuccess      |INCOMING_EVENT       |PDU Session Establishment                           |1         |1777      |2020-09-10 13:16:15.986 +0000 UTC  |
|22   |N11EbiAssignmentReq                |OUTGOING_EVENT       |PDU Session Establishment                           |1         |1777      |2020-09-10 13:16:15.99 +0000 UTC   |
|23   |N11EbiAssignmentRsp                |INCOMING_EVENT       |PDU Session Establishment                           |1         |1777      |2020-09-10 13:16:16.017 +0000 UTC  |
|24   |N11N1N2MessageTransferReq          |OUTGOING_EVENT       |PDU Session Establishment                           |1         |1777      |2020-09-10 13:16:16.021 +0000 UTC  |
|25   |N11N1N2MessageTransferSuccess      |INCOMING_EVENT       |PDU Session Establishment                           |1         |1777      |2020-09-10 13:16:16.096 +0000 UTC  |
|26   |Message Type None                  |LOCAL_2_DB           |Unknown                                             |0         |0         |2020-09-10 13:16:16.096 +0000 UTC  |
|27   |N11SmContextUpdateReq              |INCOMING_EVENT       |PDU Session Establishment                           |1         |1778      |2020-09-10 13:16:16.111 +0000 UTC  |
|28   |N4SessionModificationReq           |OUTGOING_EVENT       |PDU Session Establishment                           |1         |1778      |2020-09-10 13:16:16.114 +0000 UTC  |
|29   |N4SessionModificationSuccess       |INCOMING_EVENT       |PDU Session Establishment                           |1         |1778      |2020-09-10 13:16:16.155 +0000 UTC  |
|30   |N4GtpuRouterAdvertisementReq       |OUTGOING_EVENT       |PDU Session Establishment                           |1         |1778      |2020-09-10 13:16:16.156 +0000 UTC  |
|31   |N4SessionModificationSuccess       |ENDPROC_EVENT        |PDU Session Establishment                           |1         |1778      |2020-09-10 13:16:16.175 +0000 UTC  |

Logging a Message for Event Trace Logs

The following is a sample example of a LogTag for Event Trace logs:

2020/09/10 13:16:16.177 smf-service [DEBUG] [Genericutil.go:5739] [smf-service0.smf-app.event-trace] EVENT TRACE SessionKeys[[imsi-123456789012345:5 (pk)]]
CurIndex:[31], CurProcInst:[1], CreateTimeStamp:[2020-09-10 13:16:15.503 +0000 UTC], BaseTimeStamp:[2020-09-10 13:16:15.503 +0000 UTC]
|INDEX|EVENT NAME                         |EVENT TYPE           |PROC NAME                                           |PROC INST |TXN ID    |TIMESTAMP                          |

|1    |N11SmContextCreateReq              |INCOMING_EVENT       |PDU Session Establishment                           |1         |1776      |2020-09-10 13:16:15.503 +0000 UTC  |
|2    |N10RegistrationRequest             |OUTGOING_EVENT       |PDU Session Establishment                           |1         |1776      |2020-09-10 13:16:15.525 +0000 UTC  |
|3    |N10RegistrationSuccess             |INCOMING_EVENT       |PDU Session Establishment                           |1         |1776      |2020-09-10 13:16:15.605 +0000 UTC  |
|4    |N10SubscriptionFetchReq            |OUTGOING_EVENT       |PDU Session Establishment                           |1         |1776      |2020-09-10 13:16:15.606 +0000 UTC  |
|5    |N10SubscriptionFetchSuccess        |INCOMING_EVENT       |PDU Session Establishment                           |1         |1776      |2020-09-10 13:16:15.644 +0000 UTC  |
|6    |N10SubscribeForNotificationReq     |OUTGOING_EVENT       |PDU Session Establishment                           |1         |1776      |2020-09-10 13:16:15.65 +0000 UTC   |
|7    |N10SubscribeForNotificationSuccess |INCOMING_EVENT       |PDU Session Establishment                           |1         |1776      |2020-09-10 13:16:15.67 +0000 UTC   |
|8    |NIntSelfTxnPduSetup                |INTERNAL_EVENT       |PDU Session Establishment                           |1         |1777      |2020-09-10 13:16:15.67 +0000 UTC   |
|9    |Message Type None                  |LOCAL_2_DB           |Unknown                                             |0         |0         |2020-09-10 13:16:15.671 +0000 UTC  |
|10   |N11SmContextCreateSuccess          |OUTGOING_EVENT       |PDU Session Establishment                           |1         |1776      |2020-09-10 13:16:15.711 +0000 UTC  |
|11   |NIntSelfTxnPduSetup                |INCOMING_EVENT       |PDU Session Establishment                           |1         |1777      |2020-09-10 13:16:15.712 +0000 UTC  |
|12   |N7SmPolicyCreateReq                |OUTGOING_EVENT       |PDU Session Establishment                           |1         |1777      |2020-09-10 13:16:15.712 +0000 UTC  |
|13   |N7SmPolicyCreateSuccess            |INCOMING_EVENT       |PDU Session Establishment                           |1         |1777      |2020-09-10 13:16:15.797 +0000 UTC  |
|14   |NmgrRersourceMgmtRequest           |OUTGOING_EVENT       |PDU Session Establishment                           |1         |1777      |2020-09-10 13:16:15.805 +0000 UTC  |
|15   |NmgrRersourceMgmtResponse          |INCOMING_EVENT       |PDU Session Establishment                           |1         |1777      |2020-09-10 13:16:15.814 +0000 UTC  |
|16   |N7SmPolicyUpdateReq                |OUTGOING_EVENT       |PDU Session Establishment                           |1         |1777      |2020-09-10 13:16:15.823 +0000 UTC  |
|17   |N7SmPolicyUpdateSuccess            |INCOMING_EVENT       |PDU Session Establishment                           |1         |1777      |2020-09-10 13:16:15.853 +0000 UTC  |
|18   |N40ChargingDataReq                 |OUTGOING_EVENT       |PDU Session Establishment                           |1         |1777      |2020-09-10 13:16:15.854 +0000 UTC  |
|19   |N40ChargingDataSuccess             |INCOMING_EVENT       |PDU Session Establishment                           |1         |1777      |2020-09-10 13:16:15.912 +0000 UTC  |
|20   |N4SessionEstablishmentReq          |OUTGOING_EVENT       |PDU Session Establishment                           |1         |1777      |2020-09-10 13:16:15.921 +0000 UTC  |
|21   |N4SessionEstablishmentSuccess      |INCOMING_EVENT       |PDU Session Establishment                           |1         |1777      |2020-09-10 13:16:15.986 +0000 UTC  |
|22   |N11EbiAssignmentReq                |OUTGOING_EVENT       |PDU Session Establishment                           |1         |1777      |2020-09-10 13:16:15.99 +0000 UTC   |
|23   |N11EbiAssignmentRsp                |INCOMING_EVENT       |PDU Session Establishment                           |1         |1777      |2020-09-10 13:16:16.017 +0000 UTC  |
|24   |N11N1N2MessageTransferReq          |OUTGOING_EVENT       |PDU Session Establishment                           |1         |1777      |2020-09-10 13:16:16.021 +0000 UTC  |
|25   |N11N1N2MessageTransferSuccess      |INCOMING_EVENT       |PDU Session Establishment                           |1         |1777      |2020-09-10 13:16:16.096 +0000 UTC  |
|26   |Message Type None                  |LOCAL_2_DB           |Unknown                                             |0         |0         |2020-09-10 13:16:16.096 +0000 UTC  |
|27   |N11SmContextUpdateReq              |INCOMING_EVENT       |PDU Session Establishment                           |1         |1778      |2020-09-10 13:16:16.111 +0000 UTC  |
|28   |N4SessionModificationReq           |OUTGOING_EVENT       |PDU Session Establishment                           |1         |1778      |2020-09-10 13:16:16.114 +0000 UTC  |
|29   |N4SessionModificationSuccess       |INCOMING_EVENT       |PDU Session Establishment                           |1         |1778      |2020-09-10 13:16:16.155 +0000 UTC  |
|30   |N4GtpuRouterAdvertisementReq       |OUTGOING_EVENT       |PDU Session Establishment                           |1         |1778      |2020-09-10 13:16:16.156 +0000 UTC  |
|31   |N4SessionModificationSuccess       |ENDPROC_EVENT        |PDU Session Establishment                           |1         |1778      |2020-09-10 13:16:16.175 +0000 UTC  |