Class: MetaCon::Config

Inherits:
Object
  • Object
show all
Defined in:
lib/metacon/config.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(root) ⇒ Config

Returns a new instance of Config.



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# File 'lib/metacon/config.rb', line 4

def initialize(root)
  # TODO: Ability to explicitly set mconf files in .metacon settings
  require 'yaml'
  conf_files = Dir[root + '/**/*.mconf']
  @data = []
  @declared = {:rtc=>{}, :role=>{}, :os=>{}, :host=>{}}
  conf_files.each{|cf| update_with(cf) }
end

Instance Attribute Details

#data ⇒ Object

Returns the value of attribute data.



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# File 'lib/metacon/config.rb', line 3

def data
  @data
end

#declared ⇒ Object

Returns the value of attribute declared.



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# File 'lib/metacon/config.rb', line 3

def declared
  @declared
end

Instance Method Details

#[](context) ⇒ Object 



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# File 'lib/metacon/config.rb', line 13

def [](context)
  rtc,role,os,host = [:rtc,:role,:os,:host].map{|k| context.delete(k) || '*'}
  relevant = @data.select do |keys,fc|
    (rtc == '*' || keys[0] == '*' || rtc == keys[0]) &&
    (role== '*' || keys[1] == '*' || role== keys[1]) &&
    (os  == '*' || keys[2] == '*' || os  == keys[2]) &&
    (host== '*' || keys[3] == '*' || host== keys[3])
  end
  res = {}
  relevant.each do |k, fc|
    fam, content = fc
    if res.has_key?(fam)
      currv = res[fam]
      if content.is_a?(Array) && currv.is_a?(Array)
        res[fam] = currv | content
      elsif content.is_a?(Hash) && currv.is_a?(Hash)
        res[fam] = currv.merge(content)
      else
        # TODO: Think through more merge scenarios
        raise "Could not combine conf parameters for #{fam}"
      end
    else res[fam] = content end
  end
  return res
end