YANG subscribed notifications via SACM Statements
draft-birkholz-sacm-yang-content-00

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SACM Working Group                                           H. Birkholz
Internet-Draft                                            Fraunhofer SIT
Intended status: Standards Track                           N. Cam-Winget
Expires: January 20, 2018                                  Cisco Systems
                                                           July 19, 2017

           YANG subscribed notifications via SACM Statements
                  draft-birkholz-sacm-yang-content-00

Abstract

   This document summarizes the data model designed at the IETF 99
   Hackathon and is intended to grow in to a definition of general XML
   SACM statements (and later JSON and CBOR, respectively) for virtually
   every kind of Content Element (e.g. software identifiers, assessment
   guidance/results, ECA Policy rules, VDD, etc.).  The SACM Statement
   data structure is based on the Information Element (IE) definitions
   provided by the SACM Information Model.  The initial Content Element
   type transferred are YANG Subscribed Notification acquired via YANG
   push.  In combination with the Origin Metadata Annotation defined in
   draft-ietf-netmod-revised-datastores the data model defined in this
   document will ultimately be able to express collected endpoint
   characteristics, imperative guidance that define and orchestrate
   assessment instructions, and also the declarative guidance for
   endpoint attributes.

Status of This Memo

   This Internet-Draft is submitted in full conformance with the
   provisions of BCP 78 and BCP 79.

   Internet-Drafts are working documents of the Internet Engineering
   Task Force (IETF).  Note that other groups may also distribute
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   Drafts is at http://datatracker.ietf.org/drafts/current/.

   Internet-Drafts are draft documents valid for a maximum of six months
   and may be updated, replaced, or obsoleted by other documents at any
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   material or to cite them other than as "work in progress."

   This Internet-Draft will expire on January 20, 2018.

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Copyright Notice

   Copyright (c) 2017 IETF Trust and the persons identified as the
   document authors.  All rights reserved.

   This document is subject to BCP 78 and the IETF Trust's Legal
   Provisions Relating to IETF Documents
   (http://trustee.ietf.org/license-info) in effect on the date of
   publication of this document.  Please review these documents
   carefully, as they describe your rights and restrictions with respect
   to this document.  Code Components extracted from this document must
   include Simplified BSD License text as described in Section 4.e of
   the Trust Legal Provisions and are provided without warranty as
   described in the Simplified BSD License.

Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   2
   2.  Requirements notation . . . . . . . . . . . . . . . . . . . .   3
   3.  Brokering of YANG push telemetry via SACM statements  . . . .   3
   4.  Encapsulation of YANG notifications in SACM content-elements    3
     4.1.  Enumeration definition for content-type . . . . . . . . .   4
     4.2.  Element definition for content-metadata . . . . . . . . .   4
     4.3.  Definition of the yang-output-metadata element included
           in content-metadata . . . . . . . . . . . . . . . . . . .   5
   5.  SACM Component Composition  . . . . . . . . . . . . . . . . .   7
   6.  IANA considerations . . . . . . . . . . . . . . . . . . . . .   7
   7.  Security Considerations . . . . . . . . . . . . . . . . . . .   7
   8.  Acknowledgements  . . . . . . . . . . . . . . . . . . . . . .   7
   9.  Change Log  . . . . . . . . . . . . . . . . . . . . . . . . .   7
   10. Contributors  . . . . . . . . . . . . . . . . . . . . . . . .   7
   11. Normative References  . . . . . . . . . . . . . . . . . . . .   7
   Appendix A.  Minimal SACM Statement Definition for YANG Output  .   8
   Authors' Addresses  . . . . . . . . . . . . . . . . . . . . . . .  27

1.  Introduction

   YANG modules are a powerful established tool to provide endpoint
   attributes (IE) with well-defined semantics.  YANG push
   [I-D.ietf-netconf-yang-push] and the corresponding YANG subscribed
   notification [I-D.ietf-netconf-subscribed-notifications] drafts make
   use of these modules to create streams of notifications (telemetry)
   providing SACM content on the data plane.  Correspondingly, filter
   expressions used in the context of YANG subscriptions constitute SACM
   content that is imperative guidance consumed by SACM components on
   the management plane.

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