1 /*
2 *
3 * Copyright 2017 gRPC authors.
4 *
5 * Licensed under the Apache License, Version 2.0 (the "License");
6 * you may not use this file except in compliance with the License.
7 * You may obtain a copy of the License at
8 *
9 * http://www.apache.org/licenses/LICENSE-2.0
10 *
11 * Unless required by applicable law or agreed to in writing, software
12 * distributed under the License is distributed on an "AS IS" BASIS,
13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 * See the License for the specific language governing permissions and
15 * limitations under the License.
16 *
17 */
18
19 #ifndef GRPCPP_SUPPORT_ERROR_DETAILS_H
20 #define GRPCPP_SUPPORT_ERROR_DETAILS_H
21
22 #include <grpcpp/support/status.h>
23
24 namespace grpc {
25
26 /// Map a \a grpc::Status to a \a google::rpc::Status.
27 /// The given \a to object will be cleared.
28 /// On success, returns status with OK.
29 /// Returns status with \a INVALID_ARGUMENT, if failed to deserialize.
30 /// Returns status with \a FAILED_PRECONDITION, if \a to is nullptr.
31 ///
32 /// \note
33 /// This function is a template to avoid a build dep on \a status.proto.
34 /// However, this function still requires that \tparam T is of type
35 /// \a google::rpc::Status, which is defined at
36 /// https://github.com/googleapis/googleapis/blob/master/google/rpc/status.proto
37 template <typename T>
ExtractErrorDetails(const grpc::Status & from,T * to)38 grpc::Status ExtractErrorDetails(const grpc::Status& from, T* to) {
39 if (to == nullptr) {
40 return grpc::Status(grpc::StatusCode::FAILED_PRECONDITION, "");
41 }
42 if (!to->ParseFromString(from.error_details())) {
43 return grpc::Status(grpc::StatusCode::INVALID_ARGUMENT, "");
44 }
45 return grpc::Status::OK;
46 }
ExtractErrorDetails(const grpc::Status &,std::nullptr_t)47 inline grpc::Status ExtractErrorDetails(const grpc::Status&, std::nullptr_t) {
48 return grpc::Status(grpc::StatusCode::FAILED_PRECONDITION, "");
49 }
50
51 /// Map \a google::rpc::Status to a \a grpc::Status.
52 /// Returns OK on success.
53 /// Returns status with \a FAILED_PRECONDITION if \a to is nullptr.
54 ///
55 /// \note
56 /// This function is a template to avoid a build dep on \a status.proto.
57 /// However, this function still requires that \tparam T is of type
58 /// \a google::rpc::Status, which is defined at
59 /// https://github.com/googleapis/googleapis/blob/master/google/rpc/status.proto
60 template <typename T>
SetErrorDetails(const T & from,grpc::Status * to)61 grpc::Status SetErrorDetails(const T& from, grpc::Status* to) {
62 if (to == nullptr) {
63 return grpc::Status(grpc::StatusCode::FAILED_PRECONDITION, "");
64 }
65 grpc::StatusCode code = grpc::StatusCode::UNKNOWN;
66 if (from.code() >= grpc::StatusCode::OK &&
67 from.code() <= grpc::StatusCode::UNAUTHENTICATED) {
68 code = static_cast<grpc::StatusCode>(from.code());
69 }
70 *to = grpc::Status(code, from.message(), from.SerializeAsString());
71 return grpc::Status::OK;
72 }
73
74 } // namespace grpc
75
76 #endif // GRPCPP_SUPPORT_ERROR_DETAILS_H
77