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require 'benchmark'
module ActionWebService # :nodoc:
module Dispatcher # :nodoc:
class DispatcherError < ActionWebService::ActionWebServiceError # :nodoc:
end
def self.append_features(base) # :nodoc:
super
base.class_inheritable_option(:web_service_dispatching_mode, :direct)
base.class_inheritable_option(:web_service_exception_reporting, true)
base.send(:include, ActionWebService::Dispatcher::InstanceMethods)
end
module InstanceMethods # :nodoc:
private
def invoke_web_service_request(protocol_request)
invocation = web_service_invocation(protocol_request)
case web_service_dispatching_mode
when :direct
web_service_direct_invoke(invocation)
when :delegated, :layered
web_service_delegated_invoke(invocation)
end
end
def web_service_direct_invoke(invocation)
@method_params = invocation.method_ordered_params
arity = method(invocation.api_method.name).arity rescue 0
if arity < 0 || arity > 0
return_value = self.__send__(invocation.api_method.name, *@method_params)
else
return_value = self.__send__(invocation.api_method.name)
end
web_service_create_response(invocation.protocol, invocation.api, invocation.api_method, return_value)
end
def web_service_delegated_invoke(invocation)
cancellation_reason = nil
return_value = invocation.service.perform_invocation(invocation.api_method.name, invocation.method_ordered_params) do |x|
cancellation_reason = x
end
if cancellation_reason
raise(DispatcherError, "request canceled: #{cancellation_reason}")
end
web_service_create_response(invocation.protocol, invocation.api, invocation.api_method, return_value)
end
def web_service_invocation(request)
public_method_name = request.method_name
invocation = Invocation.new
invocation.protocol = request.protocol
invocation.service_name = request.service_name
if web_service_dispatching_mode == :layered
case invocation.protocol
when Protocol::Soap::SoapProtocol
soap_action = request.protocol_options[:soap_action]
if soap_action && soap_action =~ /^\/\w+\/(\w+)\//
invocation.service_name = $1
end
when Protocol::XmlRpc::XmlRpcProtocol
if request.method_name =~ /^([^\.]+)\.(.*)$/
public_method_name = $2
invocation.service_name = $1
end
end
end
case web_service_dispatching_mode
when :direct
invocation.api = self.class.web_service_api
invocation.service = self
when :delegated, :layered
invocation.service = web_service_object(invocation.service_name)
invocation.api = invocation.service.class.web_service_api
end
if invocation.api.nil?
raise(DispatcherError, "no API attached to #{invocation.service.class}")
end
invocation.protocol.register_api(invocation.api)
request.api = invocation.api
if invocation.api.has_public_api_method?(public_method_name)
invocation.api_method = invocation.api.public_api_method_instance(public_method_name)
else
if invocation.api.default_api_method.nil?
raise(DispatcherError, "no such method '#{public_method_name}' on API #{invocation.api}")
else
invocation.api_method = invocation.api.default_api_method_instance
end
end
if invocation.service.nil?
raise(DispatcherError, "no service available for service name #{invocation.service_name}")
end
unless invocation.service.respond_to?(invocation.api_method.name)
raise(DispatcherError, "no such method '#{public_method_name}' on API #{invocation.api} (#{invocation.api_method.name})")
end
request.api_method = invocation.api_method
begin
invocation.method_ordered_params = invocation.api_method.cast_expects(request.method_params.dup)
rescue
logger.warn "Casting of method parameters failed" unless logger.nil?
invocation.method_ordered_params = request.method_params
end
request.method_params = invocation.method_ordered_params
invocation.method_named_params = {}
invocation.api_method.param_names.inject(0) do |m, n|
invocation.method_named_params[n] = invocation.method_ordered_params[m]
m + 1
end
invocation
end
def web_service_create_response(protocol, api, api_method, return_value)
if api.has_api_method?(api_method.name)
return_type = api_method.returns ? api_method.returns[0] : nil
return_value = api_method.cast_returns(return_value)
else
return_type = ActionWebService::SignatureTypes.canonical_signature_entry(return_value.class, 0)
end
protocol.encode_response(api_method.public_name + 'Response', return_value, return_type)
end
class Invocation # :nodoc:
attr_accessor :protocol
attr_accessor :service_name
attr_accessor :api
attr_accessor :api_method
attr_accessor :method_ordered_params
attr_accessor :method_named_params
attr_accessor :service
end
end
end
end
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