class Chef::Sugar::Filters::Injector

A top-level class for manipulation the resource collection.

Public Class Methods

new(recipe, identifier, placement) click to toggle source
# File lib/chef/sugar/filters.rb, line 36
def initialize(recipe, identifier, placement)
  @recipe              = recipe
  @resource_collection = @recipe.run_context.resource_collection
  @resource            = @resource_collection.lookup(identifier)
  @placement           = placement
end

Public Instance Methods

evaluate(&block) click to toggle source
# File lib/chef/sugar/filters.rb, line 43
def evaluate(&block)
  instance_eval(&block)
end
insert_after(resource, new_resource) click to toggle source
# File lib/chef/sugar/filters.rb, line 59
def insert_after(resource, new_resource)
  @resource_collection.instance_eval do
    # Remove the resource because it's automatically created
    @resources.delete_at(@resources_by_name[new_resource.to_s])
    @resources_by_name.delete(new_resource.to_s)

    index = @resources_by_name[resource.to_s] + 2
    @resources.insert(index, new_resource)
    @resources_by_name[new_resource.to_s] = index
  end
end
insert_before(resource, new_resource) click to toggle source
# File lib/chef/sugar/filters.rb, line 47
def insert_before(resource, new_resource)
  @resource_collection.instance_eval do
    # Remove the resource because it's automatically created
    @resources.delete_at(@resources_by_name[new_resource.to_s])
    @resources_by_name.delete(new_resource.to_s)

    index = @resources_by_name[resource.to_s]
    @resources.insert(index, new_resource)
    @resources_by_name[new_resource.to_s] = index
  end
end
method_missing(m, *args, &block) click to toggle source
Calls superclass method
# File lib/chef/sugar/filters.rb, line 71
def method_missing(m, *args, &block)
  new_resource = @recipe.send(m, *args, &block)

  case @placement
  when :before
    insert_before(@resource, new_resource)
  when :after
    insert_after(@resource, new_resource)
  else
    super
  end
end