cdist-backup/doc/internal/logs/2010-11-09

Rethinking ideas of last talk.

What if types are formal / have formal arguments?
What if cdist can do all the parsing stuff and the real
functionality comes out of the library (similar to cfengine)?

What if the library is integral part of cdist?


conf/lib/$name/
   attributes/
      a
      b
      c


--------------------------------------------------------------------------------
I'm not sure whether this design is in fact helpful.
But it's clearly necessary to have a directory per type, so a type can
have helpers.


conf/lib/$name/
   init?


Prepare some very minimal (non functional) framework for library integration?
   Like parsing for command line arguments?

--------------------------------------------------------------------------------
Real configurations versus types:

Types are reusable code: For instance etc_resolv.

Configurations are types used and configured.


--------------------------------------------------------------------------------

Style

   __type <id> --option1 <arg1> 

seems to be quite good usable. cdist can easily -----parse--- this.

Nope. We don't parse. We let the shell execute.

So whatever is __type will get executed.

__type must probably be part of some cdist specific path.

Which again could be

   conf/lib/$name

Which could result in the directory

   conf/lib/.$name for helpers

That style could include a mandority --help, --args arguments
and would thus be independent of the language used (can, but does
not must be shell).

How to solve standard configurations that way?

   EASY AS WELL!

   __type <either option or magic> --option1 <arg1>
   
   for instance

   __type . --option1 <arg1>


--------------------------------------------------------------------------------
Type paths
   At least (at maximum)? 2:
      user + system

   Easy to do.

--------------------------------------------------------------------------------
Types: Name types types or name types modules?

--------------------------------------------------------------------------------

Where to place/start the configuration?

   wherever it is: name it configuration!


--------------------------------------------------------------------------------
cdist installation / paths:

   /etc/cdist/                   # CDISTBASEDIR
      config/                    # CDISTCONFIGDIR
      types/                     # CDISTUSERTYPEDIR 

   $prefix/lib/cdist/types/      # CDISTSYSTYPEDIR


cdist environment:
   $__loaded_from                # path where $type has been loaded from
   PATH=$CDISTUSERTYPEDIR:$CDISTSYSTYPEDIR:$PATH