Fix a generation bug when an interceptor does not have any accessors

- With the change of `goa.InterceptorInfo` from a struct to an
  interface, the generation of implementation of the interface methods
  on the generated interceptor info structs became necessary. The
  code for those methods was included in a section of the template that
  was conditional on the interceptor having accessors. Now, the
  conditional has been moved to a more appropriate place so the
  interface methods are implemented.

Author: douglaswth

codegen/service/templates/interceptors.go.tpl

@@ -1,4 +1,3 @@
-{{- if hasPrivateImplementationTypes . }}
 // Public accessor methods for Info types
 {{- range . }}
 
@@ -149,6 +148,7 @@ func (info *{{ .Name }}Info) ServerStreamingResult() {{ .Name }}StreamingResult
 	{{- end }}
 {{- end }}
 
+{{- if hasPrivateImplementationTypes . }}
 // Private implementation methods
 {{- range . }}
 	{{ $interceptor := . }}

codegen/service/testdata/interceptors/multiple-interceptors_client_interceptors.go.golden

@@ -35,3 +35,44 @@ func WrapMethodClientEndpoint(endpoint goa.Endpoint, i ClientInterceptors) goa.E
 	return endpoint
 }
 
+// Public accessor methods for Info types
+
+// Service returns the name of the service handling the request.
+func (info *Test2Info) Service() string {
+	return info.service
+}
+
+// Method returns the name of the method handling the request.
+func (info *Test2Info) Method() string {
+	return info.method
+}
+
+// CallType returns the type of call the interceptor is handling.
+func (info *Test2Info) CallType() goa.InterceptorCallType {
+	return info.callType
+}
+
+// RawPayload returns the raw payload of the request.
+func (info *Test2Info) RawPayload() any {
+	return info.rawPayload
+}
+
+// Service returns the name of the service handling the request.
+func (info *Test4Info) Service() string {
+	return info.service
+}
+
+// Method returns the name of the method handling the request.
+func (info *Test4Info) Method() string {
+	return info.method
+}
+
+// CallType returns the type of call the interceptor is handling.
+func (info *Test4Info) CallType() goa.InterceptorCallType {
+	return info.callType
+}
+
+// RawPayload returns the raw payload of the request.
+func (info *Test4Info) RawPayload() any {
+	return info.rawPayload
+}

codegen/service/testdata/interceptors/multiple-interceptors_service_interceptors.go.golden

@@ -35,3 +35,44 @@ func WrapMethodEndpoint(endpoint goa.Endpoint, i ServerInterceptors) goa.Endpoin
 	return endpoint
 }
 
+// Public accessor methods for Info types
+
+// Service returns the name of the service handling the request.
+func (info *TestInfo) Service() string {
+	return info.service
+}
+
+// Method returns the name of the method handling the request.
+func (info *TestInfo) Method() string {
+	return info.method
+}
+
+// CallType returns the type of call the interceptor is handling.
+func (info *TestInfo) CallType() goa.InterceptorCallType {
+	return info.callType
+}
+
+// RawPayload returns the raw payload of the request.
+func (info *TestInfo) RawPayload() any {
+	return info.rawPayload
+}
+
+// Service returns the name of the service handling the request.
+func (info *Test3Info) Service() string {
+	return info.service
+}
+
+// Method returns the name of the method handling the request.
+func (info *Test3Info) Method() string {
+	return info.method
+}
+
+// CallType returns the type of call the interceptor is handling.
+func (info *Test3Info) CallType() goa.InterceptorCallType {
+	return info.callType
+}
+
+// RawPayload returns the raw payload of the request.
+func (info *Test3Info) RawPayload() any {
+	return info.rawPayload
+}

codegen/service/testdata/interceptors/single-api-server-interceptor_service_interceptors.go.golden

@@ -32,3 +32,24 @@ func WrapMethod2Endpoint(endpoint goa.Endpoint, i ServerInterceptors) goa.Endpoi
 	return endpoint
 }
 
+// Public accessor methods for Info types
+
+// Service returns the name of the service handling the request.
+func (info *LoggingInfo) Service() string {
+	return info.service
+}
+
+// Method returns the name of the method handling the request.
+func (info *LoggingInfo) Method() string {
+	return info.method
+}
+
+// CallType returns the type of call the interceptor is handling.
+func (info *LoggingInfo) CallType() goa.InterceptorCallType {
+	return info.callType
+}
+
+// RawPayload returns the raw payload of the request.
+func (info *LoggingInfo) RawPayload() any {
+	return info.rawPayload
+}

codegen/service/testdata/interceptors/single-client-interceptor_client_interceptors.go.golden

@@ -25,3 +25,24 @@ func WrapMethodClientEndpoint(endpoint goa.Endpoint, i ClientInterceptors) goa.E
 	return endpoint
 }
 
+// Public accessor methods for Info types
+
+// Service returns the name of the service handling the request.
+func (info *TracingInfo) Service() string {
+	return info.service
+}
+
+// Method returns the name of the method handling the request.
+func (info *TracingInfo) Method() string {
+	return info.method
+}
+
+// CallType returns the type of call the interceptor is handling.
+func (info *TracingInfo) CallType() goa.InterceptorCallType {
+	return info.callType
+}
+
+// RawPayload returns the raw payload of the request.
+func (info *TracingInfo) RawPayload() any {
+	return info.rawPayload
+}

codegen/service/testdata/interceptors/single-method-server-interceptor_service_interceptors.go.golden

@@ -25,3 +25,24 @@ func WrapMethodEndpoint(endpoint goa.Endpoint, i ServerInterceptors) goa.Endpoin
 	return endpoint
 }
 
+// Public accessor methods for Info types
+
+// Service returns the name of the service handling the request.
+func (info *LoggingInfo) Service() string {
+	return info.service
+}
+
+// Method returns the name of the method handling the request.
+func (info *LoggingInfo) Method() string {
+	return info.method
+}
+
+// CallType returns the type of call the interceptor is handling.
+func (info *LoggingInfo) CallType() goa.InterceptorCallType {
+	return info.callType
+}
+
+// RawPayload returns the raw payload of the request.
+func (info *LoggingInfo) RawPayload() any {
+	return info.rawPayload
+}

codegen/service/testdata/interceptors/single-service-server-interceptor_service_interceptors.go.golden

@@ -32,3 +32,24 @@ func WrapMethod2Endpoint(endpoint goa.Endpoint, i ServerInterceptors) goa.Endpoi
 	return endpoint
 }
 
+// Public accessor methods for Info types
+
+// Service returns the name of the service handling the request.
+func (info *LoggingInfo) Service() string {
+	return info.service
+}
+
+// Method returns the name of the method handling the request.
+func (info *LoggingInfo) Method() string {
+	return info.method
+}
+
+// CallType returns the type of call the interceptor is handling.
+func (info *LoggingInfo) CallType() goa.InterceptorCallType {
+	return info.callType
+}
+
+// RawPayload returns the raw payload of the request.
+func (info *LoggingInfo) RawPayload() any {
+	return info.rawPayload
+}