diff options
Diffstat (limited to 'lib/chef/resource_resolver.rb')
-rw-r--r-- | lib/chef/resource_resolver.rb | 103 |
1 files changed, 5 insertions, 98 deletions
diff --git a/lib/chef/resource_resolver.rb b/lib/chef/resource_resolver.rb index c9bf2e189a..88ee218924 100644 --- a/lib/chef/resource_resolver.rb +++ b/lib/chef/resource_resolver.rb @@ -21,105 +21,12 @@ require 'chef/platform/resource_priority_map' require 'chef/mixin/convert_to_class_name' class Chef - class ResourceResolver - include Chef::Mixin::ConvertToClassName - - attr_reader :node - attr_reader :resource - attr_reader :action - - def initialize(node, resource) - @node = node - @resource = resource - end - - # return a deterministically sorted list of Chef::Resource subclasses - def resources - @resources ||= Chef::Resource.descendants - end - - def resolve - # log this so we know what resources will work for the generic resource on the node (early cut) - Chef::Log.debug "resources for generic #{resource} resource enabled on node include: #{enabled_handlers}" - - # if none of the resources specifically support the resource, we still need to pick one of the resources that are - # enabled on the node to handle the why-run use case. - handlers = enabled_handlers - - if handlers.size >= 2 - # this magic stack ranks the resources by where they appear in the resource_priority_map - priority_list = [ get_priority_array(node, resource) ].flatten.compact - handlers = handlers.sort_by { |x| i = priority_list.index x; i.nil? ? Float::INFINITY : i } - if priority_list.index(handlers.first).nil? - # if we had more than one and we picked one with a precidence of infinity that means that the resource_priority_map - # entry for this resource is missing -- we should probably raise here and force resolution of the ambiguity. - Chef::Log.warn "Ambiguous resource precedence: #{handlers}, please use Chef.set_resource_priority_array to provide determinism" - end - handlers = handlers[0..0] - end - - Chef::Log.debug "resources that survived replacement include: #{handlers}" - - raise Chef::Exceptions::AmbiguousResourceResolution.new(resource, handlers) if handlers.count >= 2 - - Chef::Log.debug "dynamic resource resolver FAILED to resolve a resouce" if handlers.empty? - - return nil if handlers.empty? - - handlers[0] - end - - # this cut looks at if the resource can handle the resource type on the node - def enabled_handlers - @enabled_handlers ||= begin - enabled_handlers = resources.select do |klass| - klass.provides?(node, resource) - end.sort {|a,b| a.to_s <=> b.to_s } - - # Add Chef::Resource::X as a possibility if it is not a handler already - check_for_deprecated_chef_resource_class(enabled_handlers) - - enabled_handlers + module Deprecated + class ResourceResolver < Struct[:node, :resource] + def resolve + Chef.run_context.resource_classes.public_send(resource) end end - - private - - # - # Checks if the Chef::Resource::* class corresponding to the DSL name - # exists, emits a deprecation warning, marks it as providing the given - # short name and adds it to the DSL. This is used for method_missing - # deprecation and ResourceResolver checking, when people have created - # anonymous classes and assigned them to Chef::Resource::X. - # - # Returns the matched class, if it exists. - # - # @api private - def check_for_deprecated_chef_resource_class(enabled_handlers) - # If Chef::Resource::MyResource exists, but was not set, it won't have a - # DSL name. Add the DSL method and warn about this pattern. - class_name = convert_to_class_name(resource.to_s) - if Chef::Resource.const_defined?(class_name) - # If Chef::Resource::X already exists, and is *not* already marked as - # providing this resource, mark it as providing the resource and add it - # to the list of handlers for next time. - resource_class = Chef::Resource.const_get(class_name) - if resource_class <= Chef::Resource && !enabled_handlers.include?(resource_class) - enabled_handlers << resource_class - Chef::Log.warn("Class Chef::Resource::#{class_name} does not declare `provides #{resource.inspect}`.") - Chef::Log.warn("This will no longer work in Chef 13: you must use `provides` to provide DSL.") - resource_class.provides resource.to_sym - end - end - end - - # dep injection hooks - def get_priority_array(node, resource_name) - resource_priority_map.get_priority_array(node, resource_name) - end - - def resource_priority_map - Chef::Platform::ResourcePriorityMap.instance - end end + ResourceResolver = Deprecated::ResourceResolver end |