Module: Blender::Manifest::Roles

Included in:
Root
Defined in:
lib/blender/manifest/roles.rb

Class Method Summary collapse

Instance Method Summary collapse

Class Method Details

.included(base) ⇒ Object 



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# File 'lib/blender/manifest/roles.rb', line 3

def self.included(base)
  base.send :extend, self
end

Instance Method Details

#current_roles ⇒ Object

A very simple mechanism to define roles

Roles to accept can be defined from environment, /etc/roles file or can be explicitly defined like ‘roles xxx, yyy’ usually the ‘roles a,b,c’ call will come inside of a ‘node` block and so will be conditionally executed depending on the running host



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# File 'lib/blender/manifest/roles.rb', line 15

def current_roles
  @current_roles ||=
    if ENV['ROLES']
      ENV['ROLES'].split(",")
    elsif File.exists?("/etc/roles")
      File.read("/etc/roles").strip.split
    else
      []
    end
end

#role(r) ⇒ Object

conditionally runs the code block if the role ‘r’ is currently defined



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# File 'lib/blender/manifest/roles.rb', line 33

def role r
  if block_given? && current_roles.include?(r.to_s)
    puts "ROLE: #{r}"
    yield
  end
end

#roles(*roles) ⇒ Object

ADDS roles to the currently defined roles



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# File 'lib/blender/manifest/roles.rb', line 27

def roles *roles
  current_roles.concat(roles.map {|r| r.to_s})
end