Re: [naviserver-devel] read/write ns_config

[Vlad S. <vl...@cr...>]

What is the requirement for changing config array, did i miss it?

Can you dump all config tree at startup into ns_cache and then work with 
it instead of ns_config later?

Zoran Vasiljevic wrote:
> On 22.08.2006, at 16:46, Rick Cobb wrote:
> 
>> Uh, and I may be missing something about how you're thinking of doing
>> this, but how would you handle open configuration sets like the
>> environment variables for the CGI module, or the map of mime-type/file
>> extensions?
> 
> ?? ( == do not understand)
> 
> What do you mean by "open configuration sets" ??
> Using ns_config, nothing is "open". It is just
> a query into a in-memory data structure.
> 
> The fact that this query now uses no locks, and is thus
> "cheap", modifying it to use locks is one issue
> (and you need locks at that place because somebody
> could read and other could modify the same structure).
> Another issue is: some module already "consumed"
> the parameter at startup and will never ask for it
> again: what is the point in changing that particular
> parameter?
> Also, should this all be allowed anyway (security issue)?
> 
> This is what I see as things to take in account.
> 
> For the locking issue: I believe this is not that
> important as it can be easily "fixed" by storing the
> value got from config in a private variable and then
> reusing this for the time being.
> 
> For the security issue: well, there might be a
> config option to allow this, either as runtime
> or compile-time option (the latter will solve
> any locking issues implicitly)
> 
> For the sense of changing a once-read config value?
> Well, there isn't (sense). But that has nothing to
> do with the implementation.
> 
> Cheers
> Zoran
> 
> 
> 
> 
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Vlad Seryakov
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