/* * * Copyright 2016 gRPC authors. * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. * */ #ifndef GRPCPP_IMPL_CODEGEN_STATUS_H #define GRPCPP_IMPL_CODEGEN_STATUS_H #include #include #include namespace grpc { /// Did it work? If it didn't, why? /// /// See \a grpc::StatusCode for details on the available code and their meaning. class Status { public: /// Construct an OK instance. Status() : code_(StatusCode::OK) { // Static assertions to make sure that the C++ API value correctly // maps to the core surface API value static_assert(StatusCode::OK == static_cast(GRPC_STATUS_OK), "Mismatched status code"); static_assert( StatusCode::CANCELLED == static_cast(GRPC_STATUS_CANCELLED), "Mismatched status code"); static_assert( StatusCode::UNKNOWN == static_cast(GRPC_STATUS_UNKNOWN), "Mismatched status code"); static_assert(StatusCode::INVALID_ARGUMENT == static_cast(GRPC_STATUS_INVALID_ARGUMENT), "Mismatched status code"); static_assert(StatusCode::DEADLINE_EXCEEDED == static_cast(GRPC_STATUS_DEADLINE_EXCEEDED), "Mismatched status code"); static_assert( StatusCode::NOT_FOUND == static_cast(GRPC_STATUS_NOT_FOUND), "Mismatched status code"); static_assert(StatusCode::ALREADY_EXISTS == static_cast(GRPC_STATUS_ALREADY_EXISTS), "Mismatched status code"); static_assert(StatusCode::PERMISSION_DENIED == static_cast(GRPC_STATUS_PERMISSION_DENIED), "Mismatched status code"); static_assert(StatusCode::UNAUTHENTICATED == static_cast(GRPC_STATUS_UNAUTHENTICATED), "Mismatched status code"); static_assert(StatusCode::RESOURCE_EXHAUSTED == static_cast(GRPC_STATUS_RESOURCE_EXHAUSTED), "Mismatched status code"); static_assert(StatusCode::FAILED_PRECONDITION == static_cast(GRPC_STATUS_FAILED_PRECONDITION), "Mismatched status code"); static_assert( StatusCode::ABORTED == static_cast(GRPC_STATUS_ABORTED), "Mismatched status code"); static_assert(StatusCode::OUT_OF_RANGE == static_cast(GRPC_STATUS_OUT_OF_RANGE), "Mismatched status code"); static_assert(StatusCode::UNIMPLEMENTED == static_cast(GRPC_STATUS_UNIMPLEMENTED), "Mismatched status code"); static_assert( StatusCode::INTERNAL == static_cast(GRPC_STATUS_INTERNAL), "Mismatched status code"); static_assert(StatusCode::UNAVAILABLE == static_cast(GRPC_STATUS_UNAVAILABLE), "Mismatched status code"); static_assert( StatusCode::DATA_LOSS == static_cast(GRPC_STATUS_DATA_LOSS), "Mismatched status code"); } /// Construct an instance with associated \a code and \a error_message. /// It is an error to construct an OK status with non-empty \a error_message. Status(StatusCode code, const grpc::string& error_message) : code_(code), error_message_(error_message) {} /// Construct an instance with \a code, \a error_message and /// \a error_details. It is an error to construct an OK status with non-empty /// \a error_message and/or \a error_details. Status(StatusCode code, const grpc::string& error_message, const grpc::string& error_details) : code_(code), error_message_(error_message), binary_error_details_(error_details) {} // Pre-defined special status objects. /// An OK pre-defined instance. static const Status& OK; /// A CANCELLED pre-defined instance. static const Status& CANCELLED; /// Return the instance's error code. StatusCode error_code() const { return code_; } /// Return the instance's error message. grpc::string error_message() const { return error_message_; } /// Return the (binary) error details. // Usually it contains a serialized google.rpc.Status proto. grpc::string error_details() const { return binary_error_details_; } /// Is the status OK? bool ok() const { return code_ == StatusCode::OK; } // Ignores any errors. This method does nothing except potentially suppress // complaints from any tools that are checking that errors are not dropped on // the floor. void IgnoreError() const {} private: StatusCode code_; grpc::string error_message_; grpc::string binary_error_details_; }; } // namespace grpc #endif // GRPCPP_IMPL_CODEGEN_STATUS_H