Title: Re: [soa-rm-ra] quick thought on versioning and description
I think, Duane describes a version control mechanism where
consumers subscribe to the notifications about service version changes. If
so, we are talking about constant version control adjustment even for minor
changes. Moreover, until the adjustment happens, the consumer cannot use the
service (having some downtime) and this affects the consumers that do not use
changed feature/function, which is not acceptable for them.
If the version control is based on the explicit version
matching mechanism, it results in "Many people
whining about service management talk about this but there is no clear
convention on major version/minor version upgrade or what scheme would be
used to denote such." This is why I proposed a rule-based version
compatibility control that allows for acceptance of several/certain version
changes without adjustment for the consumer software (this depends on the
consumer needs). The rules are based on the informal or contract related
knowledge of the up-coming changes while the rule management is quite formal and
may be automated. This is a quick overview of the article Ken
mentions.
- Michael
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From: Duane Nickull
[mailto:]
Sent: 08 March 2007 17:38
To:
Ken Laskey;
Subject: Re: [soa-rm-ra]
quick thought on versioning and description
I would say yes. While the myth of late binding
has sort of been debunked, there are certain situations where auditable events
updating a services description could be subscribed to by consumers and
changes could automatically happen. Such instances would probably be
limited to minor technical reconfigurations rather than wholesale changes in
data models, yet we should definitely consider it a core function. Many
people whining about service management talk about this but there is no clear
convention on major version/minor version upgrade or what scheme would
be used to denote such.
D
On 3/8/07 5:59 AM, "Ken Laskey"
<> wrote:
Would it make sense to add a change log to
description where the service provider would list changes that we decide do
not constitute the need to update the service version? Would the
version number of the service contain an extra field (thinking of this as an
extension to Michael's paper) that indicated a log change but not really
anything else?
Not sure where I'd go with this but wanted to capture
the thought before it
disappeared.
Ken
------------------------------------------------------------------------------------------
Ken
Laskey
MITRE Corporation, M/S H305
phone: 703-983-7934
7515 Colshire Drive
fax: 703-983-1379
McLean VA
22102-7508
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