Re: [NGO] external module properties
"Randy Presuhn" <randy_presuhn@mindspring.com> Thu, 01 May 2008 22:20 UTC
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From: Randy Presuhn <randy_presuhn@mindspring.com>
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Date: Thu, 01 May 2008 15:21:13 -0600
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Subject: Re: [NGO] external module properties
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Hi - > From: "Martin Bjorklund" <mbj@tail-f.com> > To: <phil@juniper.net> > Cc: <randy_presuhn@mindspring.com>; <ngo@ietf.org> > Sent: Thursday, May 01, 2008 3:26 PM > Subject: Re: [NGO] external module properties ... > A YANG module defines types, groupings, data, rpc, and notifications. > All of these can be referenced by an importing modules (types and > groupings are obvious; data can be referenced through keyrefs, > augments, and must expressions; and rpc/notifs can be augmented). I > agree that supporting multiple versions of a module in order to handle > types and grouping should be fairly straight-forward. But when it > comes to data/rpc/notifs the device must choose one version to > implement. It would have to be a version no earlier than the latest > version referenced by any other module implemented on the device. ... This is an excellent example of the consequences of choosing (perhaps unconsiously) a particular meta-model. Consider, for example, what happens if RPCs and notifications are associated not with "the device", but with a particular object class. (One possible object class is a stand-in for "the device" which would be appropriate for those few things like "reboot" which really do apply to the entire device.) If the module defining a particular class imports a pre-defined notification or RPC, versioning would work just like for anything else. Consequently, a "device" would no longer be limited to implementing just one version of an RPC. Ancient use case: consider a "Rewind" RPC. System has several tape drives from various vendors, possibly from different technology generations. Someone updates "Rewind" to include a "energy conservation" option. When a new drive supporting that option in its Rewind RPC is installed, it should not require changing the software for all the other drives. Randy _______________________________________________ NGO mailing list NGO@ietf.org https://www.ietf.org/mailman/listinfo/ngo
- [NGO] external module properties Andy Bierman
- Re: [NGO] external module properties Juergen Schoenwaelder
- Re: [NGO] external module properties Andy Bierman
- Re: [NGO] external module properties Juergen Schoenwaelder
- Re: [NGO] external module properties Andy Bierman
- Re: [NGO] external module properties Martin Bjorklund
- Re: [NGO] external module properties Andy Bierman
- Re: [NGO] external module properties Jon Saperia
- Re: [NGO] external module properties Andy Bierman
- Re: [NGO] external module properties Martin Bjorklund
- Re: [NGO] external module properties Andy Bierman
- Re: [NGO] external module properties Ladislav Lhotka
- Re: [NGO] external module properties Juergen Schoenwaelder
- Re: [NGO] external module properties Andy Bierman
- Re: [NGO] external module properties Wes Hardaker
- Re: [NGO] external module properties Andy Bierman
- Re: [NGO] external module properties Andy Bierman
- Re: [NGO] external module properties Balazs Lengyel
- Re: [NGO] external module properties Balazs Lengyel
- Re: [NGO] external module properties David Harrington
- Re: [NGO] external module properties Juergen Schoenwaelder
- Re: [NGO] external module properties Juergen Schoenwaelder
- Re: [NGO] external module properties Randy Presuhn
- Re: [NGO] external module properties Martin Bjorklund
- Re: [NGO] external module properties Ladislav Lhotka
- Re: [NGO] external module properties Phil Shafer
- Re: [NGO] external module properties Andy Bierman
- Re: [NGO] external module properties Balazs Lengyel
- Re: [NGO] external module properties Wes Hardaker
- Re: [NGO] external module properties Andy Bierman
- Re: [NGO] external module properties David Harrington
- Re: [NGO] external module properties Phil Shafer
- Re: [NGO] external module properties David Harrington
- Re: [NGO] external module properties Phil Shafer
- Re: [NGO] external module properties Andy Bierman
- Re: [NGO] external module properties Andy Bierman
- Re: [NGO] external module properties Phil Shafer
- Re: [NGO] external module properties Andy Bierman
- Re: [NGO] external module properties Phil Shafer
- Re: [NGO] external module properties Phil Shafer
- Re: [NGO] external module properties David Harrington
- Re: [NGO] external module properties David Harrington
- Re: [NGO] external module properties Martin Bjorklund
- Re: [NGO] external module properties Andy Bierman
- Re: [NGO] external module properties Juergen Schoenwaelder
- Re: [NGO] external module properties Juergen Schoenwaelder
- Re: [NGO] external module properties Andy Bierman
- Re: [NGO] external module properties Wes Hardaker
- Re: [NGO] external module properties Wes Hardaker
- Re: [NGO] external module properties Wes Hardaker
- Re: [NGO] external module properties Wes Hardaker
- Re: [NGO] external module properties Phil Shafer
- Re: [NGO] external module properties David Harrington
- Re: [NGO] external module properties Ladislav Lhotka
- Re: [NGO] external module properties David Harrington
- Re: [NGO] external module properties Phil Shafer
- Re: [NGO] external module properties Andy Bierman
- Re: [NGO] external module properties Andy Bierman
- Re: [NGO] external module properties Phil Shafer
- Re: [NGO] external module properties Wes Hardaker
- Re: [NGO] external module properties Wes Hardaker
- Re: [NGO] external module properties Martin Bjorklund
- Re: [NGO] external module properties Martin Bjorklund
- Re: [NGO] external module properties Ladislav Lhotka
- Re: [NGO] external module properties Randy Presuhn
- Re: [NGO] external module properties Randy Presuhn
- Re: [NGO] external module properties Andy Bierman
- Re: [NGO] external module properties David Harrington
- Re: [NGO] external module properties Juergen Schoenwaelder
- Re: [NGO] external module properties Juergen Schoenwaelder
- Re: [NGO] external module properties Phil Shafer
- Re: [NGO] external module properties Phil Shafer
- Re: [NGO] external module properties Phil Shafer
- Re: [NGO] external module properties Juergen Schoenwaelder
- Re: [NGO] external module properties Phil Shafer
- Re: [NGO] external module properties Juergen Schoenwaelder
- Re: [NGO] external module properties Phil Shafer
- Re: [NGO] external module properties Phil Shafer
- Re: [NGO] external module properties Phil Shafer
- Re: [NGO] external module properties Martin Bjorklund
- Re: [NGO] external module properties Martin Bjorklund
- Re: [NGO] external module properties Wes Hardaker
- Re: [NGO] external module properties Wes Hardaker
- Re: [NGO] external module properties Phil Shafer
- Re: [NGO] external module properties Randy Presuhn
- Re: [NGO] external module properties Martin Bjorklund
- Re: [NGO] external module properties Phil Shafer
- Re: [NGO] external module properties Martin Bjorklund
- Re: [NGO] external module properties Randy Presuhn
- Re: [NGO] external module properties Randy Presuhn
- Re: [NGO] external module properties Andy Bierman
- Re: [NGO] external module properties Andy Bierman
- Re: [NGO] external module properties Andy Bierman
- Re: [NGO] external module properties Phil Shafer
- Re: [NGO] external module properties Phil Shafer
- Re: [NGO] external module properties Andy Bierman
- Re: [NGO] external module properties Andy Bierman
- Re: [NGO] external module properties Phil Shafer
- Re: [NGO] external module properties Phil Shafer
- Re: [NGO] external module properties Martin Bjorklund
- Re: [NGO] external module properties Martin Bjorklund