Event Interface Proposal

[Priya T G <priya.g@netcracker.com>]

Hello Calin, Chris,

 

This is regarding the event interface proposal  that was uploaded in OASIS portal recently:  https://www.oasis-open.org/apps/org/workgroup/tosca/download.php/63289/EventInterface2018_06_20.docx   

 I believe this has not yet been discussed in TOSCA Simple Profile meetings, but  is in plan for TOSCA YAML v1.3.

I  have a few comments and suggestions on this:

 

1.       We could embed implementation artifacts in the  event_interfaces which could be responsible for triggering these events external to the Orchestrator. This is in addition to how information in such notification will be stored on node instances/topology instance attributes after it has been received.

 

2.       Just an alignment with common approaches like REST (when you can POST or wait for callback notification), we could rename “event_interface” as “notification”

 

3.       Introduce a  new keyword “TOPOLOGY” on similar lines as “SELF”. This provides possibility to fill topology attributes as a result of an operation or event and provide possibility to read topology attribute values from node instances inside topology.

 

 

  notifications:  #event_interfaces in the original proposal

        key_reports:

          availability_report:

            outputs:

              name: availability

              value: [ TOPOLOGY, monitor, ubuntu_availability ]

            implementation:    #new                

              primary: alarm_processing         #  new

       

            event_types:

              - failure_monitoring

         fault_report:

            outputs:

              name: fault

              value: [ SELF, monitor, failure ]

            implementation:                     #

              primary: alarm_processing         #  new

              dependencies:                     #

                - prober                        #

            event_types:

              - failure_processing             

 

 

 

Kindly share your thoughts on this.

 

Regards,

 

 

 

Priya TG
Netcracker Technology

+91 (080) 4935 2500 |office
+91 (988) 0533 580 | mobile

 

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