Is there something like "role aliases" in cap 3?

[Carlos Peñas]

Hi!


Is there a way to say in capistrano

"Role :foo is an alias to role :bar"

So i could use on roles(:bar) do and get te tasks executed for servers matching role :foo

I'm looking for this because sometimes I create extensions which deals with too specific roles. For example if I create an extension to deal with varnish I will write his tasks with"varnish" role but instead of rewrite all the hosts to include :varnish role I need a way to say ":varnish role affects servers with :web role"

Is it possible?

[Lee Hambley]

Sorry, no, but you can copy the list, using the ruby API. Roles returns a simple Ruby list, so you can add host properties and then just create an array type (enumerable) list of any filtered (reduced, collected, etc) list you need. The roles() function does exactly the same, looking in the configuration namespace for any hosts with a properties.roles[] including the argument passed to roles()

I hope that helps.

Lee Hambley

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http://lee.hambley.name/

+49 (0) 170 298 5667

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[Carlos Peñas]

On Friday, 12 September 2014 15:06:08 UTC+2, Lee Hambley wrote:

Sorry, no, but you can copy the list, using the ruby API. Roles returns a simple Ruby list, so you can add host properties and then just create an array type (enumerable) list of any filtered (reduced, collected, etc) list you need.

Baaad, well I been playing a bit with pry sto(m)ping in the middle of a "cap" and I found that, when servers are defined, I can simply `server.add_role(:my_shiny_new_role)` with each one of the objects that a call to 'roles()' yield, and for then on, that servers will carry the new role with pride. 

Perhaps I could alter the DSL to add a new command that does just that (from now I had only success inside a task) I'll keep trying if life does not come in the way.

I hope that helps.

Thanks anyway