Class: Chisel::Resource

Inherits:
Object
  • Object
show all
Defined in:
lib/chisel/resource.rb

Constant Summary collapse

@@cache = 
{}

Class Method Summary collapse

Instance Method Summary collapse

Class Method Details

.all ⇒ Object 



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# File 'lib/chisel/resource.rb', line 10

def self.all
  raise "You must implement #{self.class.name}.all"
end

.class_cache(*keys) ⇒ Object 



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# File 'lib/chisel/resource.rb', line 43

def self.class_cache(*keys)
  cached = true
  keys.each { |key| cached &= @@cache.key?(key) }
  if cached
    if keys.size == 1
      return @@cache[keys[0]]
    else
      return keys.map { |key| @@cache[key] }
    end
  end
  if keys.size == 1
    results = yield
    @@cache[keys[0]] = results
  else
    results = [*yield]
    keys.each_index { |i| @@cache[keys[i]] = results[i] }
  end
  results
end

.find(parameters = {}) ⇒ Object 



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# File 'lib/chisel/resource.rb', line 84

def self.find(parameters={})
  self.find_in(self.all, parameters)
end

.find_in(resources, parameters = {}) ⇒ Object 



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# File 'lib/chisel/resource.rb', line 63

def self.find_in(resources, parameters={})
  return resources if parameters == {}
  results = []
  
  resources.each do |resource|
    matches = true
    parameters.each do |param, value|
      param = param.to_sym
      if resource.respond_to?(param)
        param_value = resource.public_send(param)
        if param_value != value
          matches = false
          break
        end
      end
    end
    results << resource if matches
  end
  results
end

Instance Method Details

#cache(*keys) ⇒ Object 



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# File 'lib/chisel/resource.rb', line 22

def cache(*keys)
  @cache ||= {}
  cached = true
  keys.each { |key| cached &= @cache.key?(key) }
  if cached
    if keys.size == 1
      return @cache[keys[0]]
    else
      return keys.map { |key| @cache[key] }
    end
  end
  if keys.size == 1
    results = yield
    @cache[keys[0]] = results
  else
    results = [*yield]
    keys.each_index { |i| @cache[keys[i]] = results[i] }
  end
  results
end

#id ⇒ Object 



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# File 'lib/chisel/resource.rb', line 6

def id
  raise "You must implement #{self.class.name}.id"
end

#inspect ⇒ Object 



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# File 'lib/chisel/resource.rb', line 18

def inspect
  File.join(*self.id)
end

#resource_type ⇒ Object 



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# File 'lib/chisel/resource.rb', line 14

def resource_type
  self.class.name.underscore
end