1 // Copyright 2016 gRPC authors.
3 // Licensed under the Apache License, Version 2.0 (the "License");
4 // you may not use this file except in compliance with the License.
5 // You may obtain a copy of the License at
7 // http://www.apache.org/licenses/LICENSE-2.0
9 // Unless required by applicable law or agreed to in writing, software
10 // distributed under the License is distributed on an "AS IS" BASIS,
11 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12 // See the License for the specific language governing permissions and
13 // limitations under the License.
15 // Service exported by server reflection
19 package grpc.reflection.v1alpha;
21 service ServerReflection {
22 // The reflection service is structured as a bidirectional stream, ensuring
23 // all related requests go to a single server.
24 rpc ServerReflectionInfo(stream ServerReflectionRequest)
25 returns (stream ServerReflectionResponse);
28 // The message sent by the client when calling ServerReflectionInfo method.
29 message ServerReflectionRequest {
31 // To use reflection service, the client should set one of the following
32 // fields in message_request. The server distinguishes requests by their
33 // defined field and then handles them using corresponding methods.
34 oneof message_request {
35 // Find a proto file by the file name.
36 string file_by_filename = 3;
38 // Find the proto file that declares the given fully-qualified symbol name.
39 // This field should be a fully-qualified symbol name
40 // (e.g. <package>.<service>[.<method>] or <package>.<type>).
41 string file_containing_symbol = 4;
43 // Find the proto file which defines an extension extending the given
44 // message type with the given field number.
45 ExtensionRequest file_containing_extension = 5;
47 // Finds the tag numbers used by all known extensions of extendee_type, and
48 // appends them to ExtensionNumberResponse in an undefined order.
49 // Its corresponding method is best-effort: it's not guaranteed that the
50 // reflection service will implement this method, and it's not guaranteed
51 // that this method will provide all extensions. Returns
52 // StatusCode::UNIMPLEMENTED if it's not implemented.
53 // This field should be a fully-qualified type name. The format is
55 string all_extension_numbers_of_type = 6;
57 // List the full names of registered services. The content will not be
59 string list_services = 7;
63 // The type name and extension number sent by the client when requesting
64 // file_containing_extension.
65 message ExtensionRequest {
66 // Fully-qualified type name. The format should be <package>.<type>
67 string containing_type = 1;
68 int32 extension_number = 2;
71 // The message sent by the server to answer ServerReflectionInfo method.
72 message ServerReflectionResponse {
73 string valid_host = 1;
74 ServerReflectionRequest original_request = 2;
75 // The server set one of the following fields according to the message_request
77 oneof message_response {
78 // This message is used to answer file_by_filename, file_containing_symbol,
79 // file_containing_extension requests with transitive dependencies. As
80 // the repeated label is not allowed in oneof fields, we use a
81 // FileDescriptorResponse message to encapsulate the repeated fields.
82 // The reflection service is allowed to avoid sending FileDescriptorProtos
83 // that were previously sent in response to earlier requests in the stream.
84 FileDescriptorResponse file_descriptor_response = 4;
86 // This message is used to answer all_extension_numbers_of_type requst.
87 ExtensionNumberResponse all_extension_numbers_response = 5;
89 // This message is used to answer list_services request.
90 ListServiceResponse list_services_response = 6;
92 // This message is used when an error occurs.
93 ErrorResponse error_response = 7;
97 // Serialized FileDescriptorProto messages sent by the server answering
98 // a file_by_filename, file_containing_symbol, or file_containing_extension
100 message FileDescriptorResponse {
101 // Serialized FileDescriptorProto messages. We avoid taking a dependency on
102 // descriptor.proto, which uses proto2 only features, by making them opaque
104 repeated bytes file_descriptor_proto = 1;
107 // A list of extension numbers sent by the server answering
108 // all_extension_numbers_of_type request.
109 message ExtensionNumberResponse {
110 // Full name of the base type, including the package name. The format
111 // is <package>.<type>
112 string base_type_name = 1;
113 repeated int32 extension_number = 2;
116 // A list of ServiceResponse sent by the server answering list_services request.
117 message ListServiceResponse {
118 // The information of each service may be expanded in the future, so we use
119 // ServiceResponse message to encapsulate it.
120 repeated ServiceResponse service = 1;
123 // The information of a single service used by ListServiceResponse to answer
124 // list_services request.
125 message ServiceResponse {
126 // Full name of a registered service, including its package name. The format
127 // is <package>.<service>
131 // The error code and error message sent by the server when an error occurs.
132 message ErrorResponse {
133 // This field uses the error codes defined in grpc::StatusCode.
134 int32 error_code = 1;
135 string error_message = 2;