Public SourceMage Discussion List

[Andrew <afrayedknot AT thefrayedknot.armory.com>]

>From a different perspective relying on a depends of another depends for
something directly used can cause bugs to crop up you werent expecting,
specifically if the spell in the middle changes.

In the interim, the abi changing spells could march through all the
binaries/libraries on the system and see which ones link against it, then
track down the owning spells and generate the triggers that way. Thats
a lot slower and less elegant though, it would however work very accurately.

-Andrew


On Sat, Sep 03, 2005 at 10:20:19PM -0500, Robin Cook wrote:
> I guess depends will have to be a bit more specific rather than relying 
> on the depends of spell it depends on, or the trigger won't catch them all.
> 
> CuZnDragon
> Robin Cook
> 
> -------- Original Message --------
> Subject: Re: [SM-Discuss] Improved Sorcery Trigger Support
> Date: Sat, 3 Sep 2005 17:02:39 -0700
> From: Andrew <afrayedknot AT thefrayedknot.armory.com>
> To: sm-discuss AT lists.ibiblio.org
> References: <20050826034036.GA30079 AT thefrayedknot.armory.com>
> 
> 
> Hi, given the recent concerns over the openssl update I decided
> to go ahead and implement the solution I outlined below in devel
> sorcery. Disclaimer: this is in the "proof of concept" phase, its not
> completely ironed out, Im adding it so other interested parties can try it
> out and we can iterate on improvements if need be (bazaar style). Swoolley
> is going to update the openssl spell in test grimoire to try this out.
> 
> from the spell maintainers perspective you add a file called "UP_TRIGGERS"
> (for lack of a better name), in it you call a function called "up_trigger"
> for each spell thats going to break due to an abi change (or whatever).
> 
> Heres a brief example:
> for each in $(gaze depends $SPELL 1|cut -f1 -d:); do
>    up_trigger $each cast_self
> done
> 
> This is almost exactly the same as placing a TRIGGERS file in each of
> the spells that depend on openssl, but hopefully easier.
> 
> from the users perspective the following will happen: all the spells
> that depend on openssl (in this case) will automatically get added to
> the list of spells to cast. Hopefully after cast completes there wont
> be any spells broken due to ssl update; thats the goal at least.
> 
> -Andrew
> 
> > 
> > * Add a new spell file on the triggerer's side. The file would let the
> > spell generate triggers. For example, zlib could dynamically trigger
> > cast_self on all the spells that depend on it. Other spells with similarly
> > shaky api's could do the same. Perl could trigger a recast on all the 
> > installed perl modules. 
> > 
> > Commentary: Much more powerful interface. However it involves making
> > (possibly bad) assumptions about spells. Leads to further decentralization
> > of information, for example, the triggerer would have to know what spells
> > may be effected by an api change. Overall spell management could become
> > more difficult.
> > 
> 
> -- 
> __________________________________________________________________________
> |Andrew D. Stitt                           | astitt at sourcemage.org    |
> |irc: afrayedknot                          | afrayedknot at t.armory.com |
> |aim: thefrayedknot or iteratorplusplus    | acedit at armory.com        |
> |Sorcery Team Lead                         | ftp://t.armory.com/         |
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-- 
__________________________________________________________________________
|Andrew D. Stitt                           | astitt at sourcemage.org    |
|irc: afrayedknot                          | afrayedknot at t.armory.com |
|aim: thefrayedknot or iteratorplusplus    | acedit at armory.com        |
|Sorcery Team Lead                         | ftp://t.armory.com/         |
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