Method: Beaker::Options::Parser#set_default_host!

Defined in:
lib/beaker/options/parser.rb

#set_default_host!(hosts) ⇒ Object

Add the ‘default’ role to the host determined to be the default. If a host already has the role default then do nothing. If more than a single host has the role ‘default’, raise error. Default host determined to be 1) the only host in a single host configuration, 2) the host with the role ‘master’ defined.

Parameters:

  • hosts (Hash) —

    A hash of hosts, each identified by a String name. Each named host will have an Array of roles



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# File 'lib/beaker/options/parser.rb', line 132

def set_default_host!(hosts)
  default           = []
  master            = []
  default_host_name = nil

  #look through the hosts and find any hosts with role 'default' and any hosts with role 'master'
  hosts.each_key do |name|
    host = hosts[name]
    if host[:roles].include?('default')
      default << name
    elsif host[:roles].include?('master')
      master << name
    end
  end

  # default_set? will throw an error if length > 1
  # and return false if no default is set.
  if !@validator.default_set?(default)
    #no default set, let's make one
    if not master.empty? and master.length == 1
      default_host_name = master[0]
    elsif hosts.length == 1
      default_host_name = hosts.keys[0]
    end
    if default_host_name
      hosts[default_host_name][:roles] << 'default'
    end
  end
end