Content Distribution Network Interconnection (CDNI) Logging Interface
RFC 7937

Document Type RFC - Proposed Standard (August 2016; No errata)
Last updated 2016-08-29
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IESG IESG state RFC 7937 (Proposed Standard)
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Send notices to "Kevin J. Ma" <kevin.j.ma@ericsson.com>
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Internet Engineering Task Force (IETF)               F. Le Faucheur, Ed.
Request for Comments: 7937
Category: Standards Track                               G. Bertrand, Ed.
ISSN: 2070-1721
                                                         I. Oprescu, Ed.

                                                          R. Peterkofsky
                                                             Google Inc.
                                                             August 2016

 Content Distribution Network Interconnection (CDNI) Logging Interface

Abstract

   This memo specifies the Logging interface between a downstream
   Content Distribution Network (dCDN) and an upstream CDN (uCDN) that
   are interconnected as per the CDN Interconnection (CDNI) framework.
   First, it describes a reference model for CDNI logging.  Then, it
   specifies the CDNI Logging File format and the actual protocol for
   exchange of CDNI Logging Files.

Status of This Memo

   This is an Internet Standards Track document.

   This document is a product of the Internet Engineering Task Force
   (IETF).  It represents the consensus of the IETF community.  It has
   received public review and has been approved for publication by the
   Internet Engineering Steering Group (IESG).  Further information on
   Internet Standards is available in Section 2 of RFC 7841.

   Information about the current status of this document, any errata,
   and how to provide feedback on it may be obtained at
   http://www.rfc-editor.org/info/rfc7937.

Le Faucheur, et al.          Standards Track                    [Page 1]
RFC 7937                      CDNI Logging                   August 2016

Copyright Notice

   Copyright (c) 2016 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  . . . . . . . . . . . . . . . . . . . . . . . .   3
     1.1.  Terminology . . . . . . . . . . . . . . . . . . . . . . .   4
     1.2.  Requirements Language . . . . . . . . . . . . . . . . . .   5
   2.  CDNI Logging Reference Model  . . . . . . . . . . . . . . . .   5
     2.1.  CDNI Logging Interactions . . . . . . . . . . . . . . . .   5
     2.2.  Overall Logging Chain . . . . . . . . . . . . . . . . . .   9
       2.2.1.  Logging Generation and During-Generation Aggregation   10
       2.2.2.  Logging Collection  . . . . . . . . . . . . . . . . .  11
       2.2.3.  Logging Filtering . . . . . . . . . . . . . . . . . .  11
       2.2.4.  Logging Rectification and Post-Generation Aggregation  12
       2.2.5.  Log-Consuming Applications  . . . . . . . . . . . . .  13
         2.2.5.1.  Maintenance and Debugging . . . . . . . . . . . .  13
         2.2.5.2.  Accounting  . . . . . . . . . . . . . . . . . . .  14
         2.2.5.3.  Analytics and Reporting . . . . . . . . . . . . .  14
         2.2.5.4.  Content Protection  . . . . . . . . . . . . . . .  14
         2.2.5.5.  Notions Common to Multiple Log-Consuming
                   Applications  . . . . . . . . . . . . . . . . . .  15
   3.  CDNI Logging File . . . . . . . . . . . . . . . . . . . . . .  17
     3.1.  Rules . . . . . . . . . . . . . . . . . . . . . . . . . .  17
     3.2.  CDNI Logging File Structure . . . . . . . . . . . . . . .  18
     3.3.  CDNI Logging Directives . . . . . . . . . . . . . . . . .  21
     3.4.  CDNI Logging Records  . . . . . . . . . . . . . . . . . .  26
       3.4.1.  HTTP Request Logging Record . . . . . . . . . . . . .  27
     3.5.  CDNI Logging File Extension . . . . . . . . . . . . . . .  38
     3.6.  CDNI Logging File Examples  . . . . . . . . . . . . . . .  38
     3.7.  Cascaded CDNI Logging Files Example . . . . . . . . . . .  42

Le Faucheur, et al.          Standards Track                    [Page 2]
RFC 7937                      CDNI Logging                   August 2016

   4.  Protocol for Exchange of CDNI Logging File after Full
       Collection  . . . . . . . . . . . . . . . . . . . . . . . . .  44
     4.1.  CDNI Logging Feed . . . . . . . . . . . . . . . . . . . .  45
       4.1.1.  Atom Formatting . . . . . . . . . . . . . . . . . . .  45
       4.1.2.  Updates to Log Files and the Feed . . . . . . . . . .  46
       4.1.3.  Redundant Feeds . . . . . . . . . . . . . . . . . . .  47
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