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require 'chef/mixin/descendants_tracker'
require 'set'
class Chef
module Mixin
#
# Lets objects cooperate to create a "named provider module," allowing many
# Resources / Providers / what have you to say "I would like to handle this
# DSL, but only on OS X / Linux / etc."
#
module Provides
#
# The DSL module we provide DSL to.
#
# @return [DSLModule] The DSL module we provide DSL to.
#
def provides_dsl_module
raise NotImplementedError, "#{self.class}.dsl_module"
end
#
# Mark this resource as a provider for the given DSL.
#
# @param short_name [Symbol] The name of the DSL, e.g. `:file`
# @param os [String, Array[String]] The operating system on which you
# provide the DSL. Corresponds to `node[:os]`. May
# include positive matches ('ubuntu'), negative matches ('!windows') or
# :all.
# @param platform [String, Array[String]] The platform on which you
# provide the DSL. Corresponds to `node[:platform]`. May
# include positive matches ('ubuntu'), negative matches ('!windows') or
# :all.
# @param platform_family [String, Array[String]] The platform family on
# which you provide the DSL. Corresponds to `node[:platform_family]`. May
# include positive matches ('ubuntu'), negative matches ('!windows') or
# :all.
#
def provides(short_name, os: nil, platform: nil, platform_family: nil, &block)
short_name = short_name.to_sym
provides_dsl_module.node_map.set(short_name, self, opts, &block)
provides_dsl_module.module_eval <<-EOM, __FILE__, __LINE__+1
def #{name}
provides_dsl_module.node_map.get(short_name, run_context.node)
end
EOM
end
def provides_nothing
provides_dsl_module.node_map.remove_if { |name, value, *other| value == self }
end
module Deprecated
include Chef::Mixin::DescendantsTracker
def node_map(warn: true)
Chef::Log.deprecation "Referencing node_map on #{self.class} is deprecated and will stop working in a future major version."
@node_map ||= Chef::NodeMap.new
end
# Check whether this resource provides the resource_name DSL for the given
# node
def provides?(node, resource_name)
node_map(warn: false).get(node, resource_name)
end
def provides(short_name, platform: nil, os: nil, platform_family: nil,
on_platform: nil, on_platforms: nil,
&block)
if !short_name.kind_of?(Symbol)
# YAGNI: this is probably completely unnecessary and can be removed?
Chef::Log.deprecation "Passing a non-Symbol to Chef::Resource#provides will be removed"
if short_name.kind_of?(String)
short_name.downcase!
short_name.gsub!(/\s/, "_")
end
short_name = short_name.to_sym
end
if on_platform
Chef::Log.deprecation "The #{key} option to provides has been deprecated"
end
if on_platforms
Chef::Log.deprecation "The #{key} option to provides has been deprecated"
end
super(short_name, os: os, platform_family: platform_family,
platform: platform || on_platform || on_platforms)
node_map.set(short_name, true, opts, &block)
end
def provides_nothing
node_map(warn: false).clear
super
end
end
prepend Deprecated
end
end
end
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