aboutsummaryrefslogtreecommitdiffstats
path: root/actionwebservice/lib/action_web_service/dispatcher/action_controller_dispatcher.rb
blob: 2c7d5a094800cfbb3855a0a64556dd37ed5e5507 (plain) (blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
require 'benchmark'
require 'builder/xmlmarkup'

module ActionWebService # :nodoc:
  module Dispatcher # :nodoc:
    module ActionController # :nodoc:
      def self.included(base) # :nodoc:
        class << base
          include ClassMethods
          alias_method_chain :inherited, :action_controller
        end
        base.class_eval do
          alias_method :web_service_direct_invoke_without_controller, :web_service_direct_invoke
        end
        base.add_web_service_api_callback do |klass, api|
          if klass.web_service_dispatching_mode == :direct
            klass.class_eval 'def api; dispatch_web_service_request; end'
          end
        end
        base.add_web_service_definition_callback do |klass, name, info|
          if klass.web_service_dispatching_mode == :delegated
            klass.class_eval "def #{name}; dispatch_web_service_request; end"
          elsif klass.web_service_dispatching_mode == :layered
            klass.class_eval 'def api; dispatch_web_service_request; end'
          end
        end
        base.send(:include, ActionWebService::Dispatcher::ActionController::InstanceMethods)
      end

      module ClassMethods # :nodoc:
        def inherited_with_action_controller(child)
          inherited_without_action_controller(child)
          child.send(:include, ActionWebService::Dispatcher::ActionController::WsdlAction)
        end
      end

      module InstanceMethods # :nodoc:
        private
          def dispatch_web_service_request
            if request.get?
              render_text('GET not supported', '500 GET not supported')
              return
            end
            exception = nil
            begin
              ws_request = discover_web_service_request(request)
            rescue Exception => e
              exception = e
            end
            if ws_request
              ws_response = nil
              exception = nil
              bm = Benchmark.measure do
                begin
                  ws_response = invoke_web_service_request(ws_request)
                rescue Exception => e
                  exception = e
                end
              end
              log_request(ws_request, request.raw_post)
              if exception
                log_error(exception) unless logger.nil?
                send_web_service_error_response(ws_request, exception)
              else
                send_web_service_response(ws_response, bm.real)
              end
            else
              exception ||= DispatcherError.new("Malformed SOAP or XML-RPC protocol message")
              log_error(exception) unless logger.nil?
              send_web_service_error_response(ws_request, exception)
            end
          rescue Exception => e
            log_error(e) unless logger.nil?
            send_web_service_error_response(ws_request, e)
          end

          def send_web_service_response(ws_response, elapsed=nil)
            log_response(ws_response, elapsed)
            options = { :type => ws_response.content_type, :disposition => 'inline' }
            send_data(ws_response.body, options)
          end

          def send_web_service_error_response(ws_request, exception)
            if ws_request
              unless self.class.web_service_exception_reporting
                exception = DispatcherError.new("Internal server error (exception raised)")
              end
              api_method = ws_request.api_method
              public_method_name = api_method ? api_method.public_name : ws_request.method_name
              return_type = ActionWebService::SignatureTypes.canonical_signature_entry(Exception, 0)
              ws_response = ws_request.protocol.encode_response(public_method_name + 'Response', exception, return_type, ws_request.protocol_options)
              send_web_service_response(ws_response)
            else
              if self.class.web_service_exception_reporting
                message = exception.message
                backtrace = "\nBacktrace:\n#{exception.backtrace.join("\n")}"
              else
                message = "Exception raised"
                backtrace = ""
              end
              render_text("Internal protocol error: #{message}#{backtrace}", "500 Internal Protocol Error")
            end
          end

          def web_service_direct_invoke(invocation)
            invocation.method_named_params.each do |name, value|
              params[name] = value
            end
            params['action'] = invocation.api_method.name.to_s
            if before_action == false
              raise(DispatcherError, "Method filtered")
            end
            return_value = web_service_direct_invoke_without_controller(invocation)
            after_action
            return_value
          end

          def log_request(ws_request, body)
            unless logger.nil?
              name = ws_request.method_name
              api_method = ws_request.api_method
              params = ws_request.method_params
              if api_method && api_method.expects
                params = api_method.expects.zip(params).map{ |type, param| "#{type.name}=>#{param.inspect}" }
              else
                params = params.map{ |param| param.inspect }
              end
              service = ws_request.service_name
              logger.debug("\nWeb Service Request: #{name}(#{params.join(", ")}) Entrypoint: #{service}")
              logger.debug(indent(body))
            end
          end

          def log_response(ws_response, elapsed=nil)
            unless logger.nil?
              elapsed = (elapsed ? " (%f):" % elapsed : ":")
              logger.debug("\nWeb Service Response" + elapsed + " => #{ws_response.return_value.inspect}")
              logger.debug(indent(ws_response.body))
            end
          end

          def indent(body)
            body.split(/\n/).map{|x| "  #{x}"}.join("\n")
          end
      end

      module WsdlAction # :nodoc:
        XsdNs             = 'http://www.w3.org/2001/XMLSchema'
        WsdlNs            = 'http://schemas.xmlsoap.org/wsdl/'
        SoapNs            = 'http://schemas.xmlsoap.org/wsdl/soap/'
        SoapEncodingNs    = 'http://schemas.xmlsoap.org/soap/encoding/'
        SoapHttpTransport = 'http://schemas.xmlsoap.org/soap/http'

        def wsdl
          case request.method
          when :get
            begin
              options = { :type => 'text/xml', :disposition => 'inline' }
              send_data(to_wsdl, options)
            rescue Exception => e
              log_error(e) unless logger.nil?
            end
          when :post
            render_text('POST not supported', '500 POST not supported')
          end
        end

        private
          def base_uri
            host = request.host_with_port
            relative_url_root = request.relative_url_root
            scheme = request.ssl? ? 'https' : 'http'
            '%s://%s%s/%s/' % [scheme, host, relative_url_root, self.class.controller_path]
          end

          def to_wsdl
            xml = ''
            dispatching_mode = web_service_dispatching_mode
            global_service_name = wsdl_service_name
            namespace = wsdl_namespace || 'urn:ActionWebService'
            soap_action_base = "/#{controller_name}"

            marshaler = ActionWebService::Protocol::Soap::SoapMarshaler.new(namespace)
            apis = {}
            case dispatching_mode
            when :direct
              api = self.class.web_service_api
              web_service_name = controller_class_name.sub(/Controller$/, '').underscore
              apis[web_service_name] = [api, register_api(api, marshaler)]
            when :delegated, :layered
              self.class.web_services.each do |web_service_name, info|
                service = web_service_object(web_service_name)
                api = service.class.web_service_api
                apis[web_service_name] = [api, register_api(api, marshaler)]
              end
            end
            custom_types = []
            apis.values.each do |api, bindings|
              bindings.each do |b|
                custom_types << b unless custom_types.include?(b)
              end
            end

            xm = Builder::XmlMarkup.new(:target => xml, :indent => 2)
            xm.instruct!
            xm.definitions('name'            => wsdl_service_name,
                           'targetNamespace' => namespace,
                           'xmlns:typens'    => namespace,
                           'xmlns:xsd'       => XsdNs,
                           'xmlns:soap'      => SoapNs,
                           'xmlns:soapenc'   => SoapEncodingNs,
                           'xmlns:wsdl'      => WsdlNs,
                           'xmlns'           => WsdlNs) do
              # Generate XSD
              if custom_types.size > 0
                xm.types do
                  xm.xsd(:schema, 'xmlns' => XsdNs, 'targetNamespace' => namespace) do
                    custom_types.each do |binding|
                      case
                      when binding.type.array?
                        xm.xsd(:complexType, 'name' => binding.type_name) do
                          xm.xsd(:complexContent) do
                            xm.xsd(:restriction, 'base' => 'soapenc:Array') do
                              xm.xsd(:attribute, 'ref' => 'soapenc:arrayType',
                                                 'wsdl:arrayType' => binding.element_binding.qualified_type_name('typens') + '[]')
                            end
                          end
                        end
                      when binding.type.structured?
                        xm.xsd(:complexType, 'name' => binding.type_name) do
                          xm.xsd(:all) do
                            binding.type.each_member do |name, type|
                              b = marshaler.register_type(type)
                              xm.xsd(:element, 'name' => name, 'type' => b.qualified_type_name('typens'))
                            end
                          end
                        end
                      end
                    end
                  end
                end
              end

              # APIs
              apis.each do |api_name, values|
                api = values[0]
                api.api_methods.each do |name, method|
                  gen = lambda do |msg_name, direction|
                    xm.message('name' => message_name_for(api_name, msg_name)) do
                      sym = nil
                      if direction == :out
                        returns = method.returns
                        if returns
                          binding = marshaler.register_type(returns[0])
                          xm.part('name' => 'return', 'type' => binding.qualified_type_name('typens'))
                        end
                      else
                        expects = method.expects
                        expects.each do |type|
                          binding = marshaler.register_type(type)
                          xm.part('name' => type.name, 'type' => binding.qualified_type_name('typens'))
                        end if expects
                      end
                    end
                  end
                  public_name = method.public_name
                  gen.call(public_name, :in)
                  gen.call("#{public_name}Response", :out)
                end

                # Port
                port_name = port_name_for(global_service_name, api_name)
                xm.portType('name' => port_name) do
                  api.api_methods.each do |name, method|
                    xm.operation('name' => method.public_name) do
                      xm.input('message' => "typens:" + message_name_for(api_name, method.public_name))
                      xm.output('message' => "typens:" + message_name_for(api_name, "#{method.public_name}Response"))
                    end
                  end
                end

                # Bind it
                binding_name = binding_name_for(global_service_name, api_name)
                xm.binding('name' => binding_name, 'type' => "typens:#{port_name}") do
                  xm.soap(:binding, 'style' => 'rpc', 'transport' => SoapHttpTransport)
                  api.api_methods.each do |name, method|
                    xm.operation('name' => method.public_name) do
                      case web_service_dispatching_mode
                      when :direct
                        soap_action = soap_action_base + "/api/" + method.public_name
                      when :delegated, :layered
                        soap_action = soap_action_base \
                                    + "/" + api_name.to_s \
                                    + "/" + method.public_name
                      end
                      xm.soap(:operation, 'soapAction' => soap_action)
                      xm.input do
                        xm.soap(:body,
                                'use'           => 'encoded',
                                'namespace'     => namespace,
                                'encodingStyle' => SoapEncodingNs)
                      end
                      xm.output do
                        xm.soap(:body,
                                'use'           => 'encoded',
                                'namespace'     => namespace,
                                'encodingStyle' => SoapEncodingNs)
                      end
                    end
                  end
                end
              end

              # Define it
              xm.service('name' => "#{global_service_name}Service") do
                apis.each do |api_name, values|
                  port_name = port_name_for(global_service_name, api_name)
                  binding_name = binding_name_for(global_service_name,  api_name)
                  case web_service_dispatching_mode
                  when :direct, :layered
                    binding_target = 'api'
                  when :delegated
                    binding_target = api_name.to_s
                  end
                  xm.port('name' => port_name, 'binding' => "typens:#{binding_name}") do
                    xm.soap(:address, 'location' => "#{base_uri}#{binding_target}")
                  end
                end
              end
            end
          end

          def port_name_for(global_service, service)
            "#{global_service}#{service.to_s.camelize}Port"
          end

          def binding_name_for(global_service, service)
            "#{global_service}#{service.to_s.camelize}Binding"
          end

          def message_name_for(api_name, message_name)
            mode = web_service_dispatching_mode
            if mode == :layered || mode == :delegated
              api_name.to_s + '-' + message_name
            else
              message_name
            end
          end

          def register_api(api, marshaler)
            bindings = {}
            traverse_custom_types(api, marshaler, bindings) do |binding|
              bindings[binding] = nil unless bindings.has_key?(binding)
              element_binding = binding.element_binding
              bindings[element_binding] = nil if element_binding && !bindings.has_key?(element_binding)
            end
            bindings.keys
          end

          def traverse_custom_types(api, marshaler, bindings, &block)
            api.api_methods.each do |name, method|
              expects, returns = method.expects, method.returns
              expects.each{ |type| traverse_type(marshaler, type, bindings, &block) if type.custom? } if expects
              returns.each{ |type| traverse_type(marshaler, type, bindings, &block) if type.custom? } if returns
            end
          end

          def traverse_type(marshaler, type, bindings, &block)
            binding = marshaler.register_type(type)
            return if bindings.has_key?(binding)
            bindings[binding] = nil
            yield binding
            if type.array?
              yield marshaler.register_type(type.element_type)
              type = type.element_type
            end
            type.each_member{ |name, type| traverse_type(marshaler, type, bindings, &block) } if type.structured?
          end
       end
    end
  end
end