Class: MotherBrain::Chef::RunListItem

Inherits:
Object
  • Object
show all
Defined in:
lib/mb/chef/run_list_item.rb

Constant Summary collapse

RECIPE_SEPARATOR =

MB Specific

"::"
QUALIFIED_RECIPE =

/MB Specific

%r{^recipe\[([^\]@]+)(@([0-9]+(\.[0-9]+){1,2}))?\]$}
QUALIFIED_ROLE = 
%r{^role\[([^\]]+)\]$}
VERSIONED_UNQUALIFIED_RECIPE = 
%r{^([^@]+)(@([0-9]+(\.[0-9]+){1,2}))$}
FALSE_FRIEND = 
%r{[\[\]]}

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(item) ⇒ RunListItem

Returns a new instance of RunListItem.



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# File 'lib/mb/chef/run_list_item.rb', line 36

def initialize(item)
  @version = nil
  case item
  when Hash
    assert_hash_is_valid_run_list_item!(item)
    @type = (item['type'] || item[:type]).to_sym
    @name = item['name'] || item[:name]
    if (item.has_key?('version') || item.has_key?(:version))
      @version = item['version'] || item[:version]
    end
  when String
    if match = QUALIFIED_RECIPE.match(item)
      # recipe[recipe_name]
      # recipe[[email protected]]
      @type = :recipe
      @name = match[1]
      @version = match[3] if match[3]
    elsif match = QUALIFIED_ROLE.match(item)
      # role[role_name]
      @type = :role
      @name = match[1]
    elsif match = VERSIONED_UNQUALIFIED_RECIPE.match(item)
      # [email protected]
      @type = :recipe
      @name = match[1]
      @version = match[3] if match[3]
    elsif match = FALSE_FRIEND.match(item)
      # Recipe[recipe_name]
      # roles[role_name]
      name = match[1]
      raise ArgumentError, "Unable to create #{self.class} from #{item.class}:#{item.inspect}: must be recipe[#{name}] or role[#{name}]"

    else
      # recipe_name
      @type = :recipe
      @name = item
    end
  else
    raise ArgumentError, "Unable to create #{self.class} from #{item.class}:#{item.inspect}: must be a Hash or String"
  end
end

Instance Attribute Details

#name ⇒ Object (readonly)

Returns the value of attribute name.



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# File 'lib/mb/chef/run_list_item.rb', line 33

def name
  @name
end

#type ⇒ Object (readonly)

Returns the value of attribute type.



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# File 'lib/mb/chef/run_list_item.rb', line 33

def type
  @type
end

#version ⇒ Object (readonly)

Returns the value of attribute version.



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# File 'lib/mb/chef/run_list_item.rb', line 33

def version
  @version
end

Instance Method Details

#==(other) ⇒ Object 



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# File 'lib/mb/chef/run_list_item.rb', line 90

def ==(other)
  if other.kind_of?(String)
    self.to_s == other.to_s
  else
    other.respond_to?(:type) && other.respond_to?(:name) && other.respond_to?(:version) && other.type == @type && other.name == @name && other.version == @version
  end
end

#assert_hash_is_valid_run_list_item!(item) ⇒ Object 



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# File 'lib/mb/chef/run_list_item.rb', line 98

def assert_hash_is_valid_run_list_item!(item)
  unless (item.key?('type')|| item.key?(:type)) && (item.key?('name') || item.key?(:name))
    raise ArgumentError, "Initializing a #{self.class} from a hash requires that it have a 'type' and 'name' key"
  end
end

#cookbook_name ⇒ Object

MB specific



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# File 'lib/mb/chef/run_list_item.rb', line 105

def cookbook_name
  if self.recipe?
    cookbook, _ = self.name.split(RECIPE_SEPARATOR)
    return cookbook
  end
  return nil
end

#recipe? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/mb/chef/run_list_item.rb', line 86

def recipe?
  @type == :recipe
end

#role? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/mb/chef/run_list_item.rb', line 82

def role?
  @type == :role
end

#to_s ⇒ Object 



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# File 'lib/mb/chef/run_list_item.rb', line 78

def to_s
  "#{@type}[#{@name}#{@version ? "@#{@version}" :""}]"
end