class Chef::Resource::Notification

Public Instance Methods

duplicates?(other_notification) click to toggle source
# File lib/chef/resource.rb, line 40
def duplicates?(other_notification)
  unless other_notification.respond_to?(:resource) && other_notification.respond_to?(:action)
    msg = "only duck-types of Chef::Resource::Notification can be checked for duplication "                 "you gave #{other_notification.inspect}"
    raise ArgumentError, msg
  end
  other_notification.resource == resource && other_notification.action == action
end
fix_notifier_reference(resource_collection) click to toggle source

This will look up the notifying_resource if it is not a Resource Object. It will complain if it finds multiple resources, can't find a resource, or gets invalid syntax.

# File lib/chef/resource.rb, line 94
      def fix_notifier_reference(resource_collection)
        matching_notifier = resource_collection.find(notifying_resource)
        if Array(matching_notifier).size > 1
          msg = "Notification #{self} from #{notifying_resource} was created with a reference to multiple notifying "           "resources, but can only originate from one resource.  Destination resource was defined "           "on #{resource.source_line}"
          raise Chef::Exceptions::InvalidResourceReference, msg
        end
        self.notifying_resource = matching_notifier

      rescue Chef::Exceptions::ResourceNotFound => e
        err = Chef::Exceptions::ResourceNotFound.new("Resource #{resource} is configured to receive notifications from #{notifying_resource} with action #{action}, \
but #{notifying_resource} cannot be found in the resource collection. #{resource} is defined in \
#{resource.source_line}
")
        err.set_backtrace(e.backtrace)
        raise err
      rescue Chef::Exceptions::InvalidResourceSpecification => e
          err = Chef::Exceptions::InvalidResourceSpecification.new("Resource #{resource} is configured to receive notifications from  #{notifying_resource} with action #{action}, \
but #{notifying_resource.inspect} is not valid syntax to look up a resource in the resource collection. Notification \
is defined near #{resource.source_line}
")
          err.set_backtrace(e.backtrace)
        raise err
      end
fix_resource_reference(resource_collection) click to toggle source

This will look up the resource if it is not a Resource Object. It will complain if it finds multiple resources, can't find a resource, or gets invalid syntax.

# File lib/chef/resource.rb, line 65
      def fix_resource_reference(resource_collection)
        matching_resource = resource_collection.find(resource)
        if Array(matching_resource).size > 1
          msg = "Notification #{self} from #{notifying_resource} was created with a reference to multiple resources, "           "but can only notify one resource. Notifying resource was defined on #{notifying_resource.source_line}"
          raise Chef::Exceptions::InvalidResourceReference, msg
        end
        self.resource = matching_resource

      rescue Chef::Exceptions::ResourceNotFound => e
        err = Chef::Exceptions::ResourceNotFound.new("resource #{notifying_resource} is configured to notify resource #{resource} with action #{action}, \
but #{resource} cannot be found in the resource collection. #{notifying_resource} is defined in \
#{notifying_resource.source_line}
")
        err.set_backtrace(e.backtrace)
        raise err
      rescue Chef::Exceptions::InvalidResourceSpecification => e
          err = Chef::Exceptions::InvalidResourceSpecification.new("Resource #{notifying_resource} is configured to notify resource #{resource} with action #{action}, \
but #{resource.inspect} is not valid syntax to look up a resource in the resource collection. Notification \
is defined near #{notifying_resource.source_line}
")
          err.set_backtrace(e.backtrace)
        raise err
      end
resolve_resource_reference(resource_collection) click to toggle source

If resource and/or notifying_resource is not a resource object, this will look them up in the resource collection and fix the references from strings to actual Resource objects.

# File lib/chef/resource.rb, line 51
def resolve_resource_reference(resource_collection)
  return resource if resource.kind_of?(Chef::Resource) && notifying_resource.kind_of?(Chef::Resource)

  if not(resource.kind_of?(Chef::Resource))
    fix_resource_reference(resource_collection)
  end

  if not(notifying_resource.kind_of?(Chef::Resource))
    fix_notifier_reference(resource_collection)
  end
end