Re: Simple erlang plugins (was Re: couch_gen_btree: pluggable storage / tree engines)

[Noah Slater <ns...@apache.org>]

On Mon, Feb 02, 2009 at 06:07:37PM +1030, Antony Blakey wrote:
> My concern is how to allow plugins to be updated without stomping on
> user configuration, which is why I suggest having the local plugin
> configuration be outside of the plugin's directory. Maybe that's a
> deployment required that's unlike to happen, but I look forward to a
> time when couch plugins are like rubygems and regular updating is
> common.

I've found this thread a little hard to follow so far, but why not configure the
plugins from /etc/couchdb/local.ini itself, including the configuration that
tells CouchDB which plugins to work. I'm not sure I'm comfortable with the idea
of CouchDB scanning a list of directories each time, loading things automatically.

-- 
Noah Slater, http://tumbolia.org/nslater

Re: Simple erlang plugins (was Re: couch_gen_btree: pluggable storage / tree engines)

[Antony Blakey <an...@gmail.com>]

On 02/02/2009, at 8:56 PM, Noah Slater wrote:

> I've found this thread a little hard to follow so far, but why not  
> configure the
> plugins from /etc/couchdb/local.ini itself, including the  
> configuration that
> tells CouchDB which plugins to work. I'm not sure I'm comfortable  
> with the idea
> of CouchDB scanning a list of directories each time, loading things  
> automatically.

I did it this way to avoid touching the CouchDB code, and not wanting  
to impose another file format or do parsing in shell script.  
Especially given that I have an imminent requirement for CouchDB/Win32  
where the shell is complete shit. OTOH I may have to replace the start  
script with C for that reason.

It might be better to have an erlang plugin manager that can deal with  
plugin selection, dependencies and ordering requirements, but that's a  
more intrusive solution.

Antony Blakey
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