Class: Mystro::Cloud::Model

Inherits:
Object
  • Object
show all
Defined in:
lib/mystro/cloud/model.rb

Direct Known Subclasses

Balancer, Compute, Listener, Record, Volume, Zone

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(hash = {}) ⇒ Model

Returns a new instance of Model.



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# File 'lib/mystro/cloud/model.rb', line 8

def initialize(hash={})
  @data = {}
  load(hash)
end

Instance Attribute Details

#data ⇒ Object (readonly)

Returns the value of attribute data.



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# File 'lib/mystro/cloud/model.rb', line 6

def data
  @data
end

Class Method Details

.alias_for(name) ⇒ Object 



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# File 'lib/mystro/cloud/model.rb', line 118

def alias_for(name)
  @aliases[name]
end

.attribute_for(name) ⇒ Object 



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# File 'lib/mystro/cloud/model.rb', line 114

def attribute_for(name)
  @attributes[name] || @attributes[name] || @aliases[name] && @attributes[@aliases[name]]
end

.class_for(name) ⇒ Object 



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# File 'lib/mystro/cloud/model.rb', line 122

def class_for(name)
  n = name.to_s.capitalize
  begin
    return "Mystro::Cloud::#{n}".constantize
  rescue => e
    begin
      return n.constantize
    rescue => e
      raise "couldn't find class: #{n}: #{e.message}"
    end
  end
end

.normal_key(k) ⇒ Object 



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# File 'lib/mystro/cloud/model.rb', line 135

def normal_key(k)
  k.to_s.downcase.to_sym
end

.validate!(data) ⇒ Object 



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# File 'lib/mystro/cloud/model.rb', line 99

def validate!(data)
  @attributes.each do |k, v|
    type = v[:type]
    type = type.is_a?(String) ? class_for(type) : type
    value = data[k]
    value = value.to_s if value.is_a?(Symbol)
    #puts "checking: #{k}#{'*' if v[:required]} (#{type})"
    raise "#{k} required but is nil or false" if v[:required] && !value
    raise "#{k} required but empty" if v[:required] && type == Array && value.empty?
    raise "incorrect type: #{k}: '#{value.inspect}' is not a '#{type}'" if value && !value.is_a?(type)
  end
rescue => e
  raise "#{e.message}: #{data.inspect}"
end

Instance Method Details

#[](key) ⇒ Object 



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# File 'lib/mystro/cloud/model.rb', line 74

def [](key)
  send(key.to_sym)
end

#[]=(key, value) ⇒ Object 



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# File 'lib/mystro/cloud/model.rb', line 77

def []=(key, value)
  send("#{key}=", value)
end

#alias_for(name) ⇒ Object 



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# File 'lib/mystro/cloud/model.rb', line 62

def alias_for(name)
  self.class.alias_for(name)
end

#attribute_for(name) ⇒ Object 



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# File 'lib/mystro/cloud/model.rb', line 58

def attribute_for(name)
  self.class.attribute_for(name)
end

#class_for(name) ⇒ Object 



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# File 'lib/mystro/cloud/model.rb', line 70

def class_for(name)
  self.class.class_for(name)
end

#load(hash) ⇒ Object 



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# File 'lib/mystro/cloud/model.rb', line 13

def load(hash)
  #puts "LOAD: #{hash.inspect}"
  if hash.is_a?(Hash)
    hash.each do |k, v|
      k = normal_key(k)
      k = alias_for(k) || k
      attr = attribute_for(k)
      #puts "attr: #{k}: #{attr.inspect}"
      raise "#{self.class.name}: attr not found for #{k.inspect}" unless attr
      if attr[:child]
        if attr[:type] == Array
          next unless v# && v.count
          v = [v] unless v.is_a?(Array)
          @data[k] ||= []
          v.each do |e|
            if e.is_a?(Mystro::Cloud::Model)
              @data[k] << e
            else
              c = class_for(attr[:of])
              @data[k] << c.new(e)
            end
          end
        else
          c = class_for(attr[:type])
          if v.class == c
            @data[k] = v
          else
            @data[k] = c.new(v)
          end
        end
      elsif attr[:type] == :boolean
        @data[k] = v && (v == true || v == "true")
      else
        @data[k] = v
      end
    end
  else
    hash
  end
end

#normal_key(k) ⇒ Object 



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# File 'lib/mystro/cloud/model.rb', line 66

def normal_key(k)
  self.class.normal_key(k)
end

#to_hash ⇒ Object 



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# File 'lib/mystro/cloud/model.rb', line 81

def to_hash
  out = {}
  #puts "#{self.class.name}: to_hash:"
  @data.each do |k, v|
    #puts "  #{k} => #{v}"
    if v.respond_to?(:to_hash)
      out[k] = v.to_hash
    elsif v.is_a?(Array)
      out[k] = v.map {|e| e.respond_to?(:to_hash) ? e.to_hash : e}
    else
      out[k] = v
    end
  end
  out
end

#validate! ⇒ Object 



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# File 'lib/mystro/cloud/model.rb', line 54

def validate!
  self.class.validate!(@data)
end