I still think you're making future development/debugging a difficult process,
but I also like the way you're setting things up - it is clean and easy to
understand, and that is _always_ a good thing :-)
-Dan
On Nov 9, 2010, at 2:51 AM, Marc Baudoin wrote:
> Marc Baudoin <baud...@stg-interactive.com> écrit :
>>
>> As the number of different types of hosts in my configuration
>> grows, I wonder what are the strategies for making bundlesequence
>> and inputs more modular.
>>
>> I define a class for each type of hosts so, of course, there's
>> the class approach:
>>
>> body common control
>> {
>> class1::
>>
>> bundlesequence => { "common" , "specific1"} ;
>> inputs => { "common.cf" , "specific1.cf" } ;
>>
>> class2::
>>
>> bundlesequence => { "common" , "specific2"} ;
>> inputs => { "common.cf" , "specific2.cf" } ;
>> }
>>
>> But what if a client belongs both to class1 and class2?
>>
>> My main goal is to avoid redundancies. The common parts of
>> bundlesequence and inputs can go into an slist, that's fine.
>>
>> I tried to define another slist variable to handle the specific
>> parts of bundlesequence and inputs. My idea was to begin vith an
>> empty slist (now that we can use "cf_null") and then add bundles
>> and inputs for each class the client belongs to. But it's not
>> possible to use the slist as in:
>>
>> "specific" slist => { @(specific) , "other_stuff" } ;
>>
>> and I found no way to add elements to an existing slist.
>>
>> So I'm stuck here with no elegant solution to my problem.
>>
>> How do people with a non-trivial configuration deal with this?
>
> Thank you to Daniel V. Klein, Michael Potter and Bas van der
> Vlies for their replies.
>
> I went for this approach:
>
> promises.cf:
> -----------------------------------------------------------------
> body common control
> {
> bundlesequence =>
> {
> @(g.bundlesequence) ,
> } ;
>
> ignore_missing_inputs => "true" ;
>
> inputs =>
> {
> "cfengine_stdlib.cf" ,
> "common.cf" ,
> @(g.inputs) ,
> } ;
> }
> -----------------------------------------------------------------
>
> common.cf:
> -----------------------------------------------------------------
> bundle common g
> {
> classes:
>
> # definition of classes
>
> vars:
>
> dns::
>
> "bundlesequence_dns"
> comment => "bundlesequence for DNS servers" ,
> slist =>
> {
> "dns" ,
> } ;
>
> "inputs_dns"
> comment => "inputs for DNS servers" ,
> slist =>
> {
> "dns.cf" ,
> } ;
>
> # add more classes here
>
> any::
>
> "bundlesequence"
> comment => "bundlesequence" ,
> policy => "ifdefined" ,
> slist =>
> {
> "common_bundlesequences" ,
> @(bundlesequence_dns) ,
> # add more here
> } ;
>
> "inputs"
> comment => "inputs" ,
> policy => "ifdefined" ,
> slist =>
> {
> "common_inputs.cf" ,
> @(inputs_dns) ,
> # add more here
> } ;
> }
> -----------------------------------------------------------------
>
> --
> Marc Baudoin
> STG Interactive
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