milvus/sdk/include/Status.h

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// Copyright (C) 2019-2020 Zilliz. All rights reserved.
//
// 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.
#pragma once
#include <string>
/** \brief Milvus SDK namespace
*/
namespace milvus {
/**
* @brief Status Code for SDK interface return
*/
enum class StatusCode {
OK = 0,
// system error section
UnknownError = 1,
NotSupported,
NotConnected,
// function error section
InvalidAgument = 1000,
RPCFailed,
ServerFailed,
};
/**
* @brief Status for SDK interface return
*/
class Status {
public:
Status(StatusCode code, const std::string& msg);
Status();
~Status();
Status(const Status& s);
Status&
operator=(const Status& s);
Status(Status&& s);
Status&
operator=(Status&& s);
static Status
OK() {
return Status();
}
bool
ok() const {
return state_ == nullptr || code() == StatusCode::OK;
}
StatusCode
code() const {
return (state_ == nullptr) ? StatusCode::OK : *(StatusCode*)(state_);
}
std::string
message() const;
private:
inline void
CopyFrom(const Status& s);
inline void
MoveFrom(Status& s);
private:
char* state_ = nullptr;
}; // Status
} // namespace milvus