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       1                 :             : /*
       2                 :             :  * Copyright 2025 Jinwoo Sung
       3                 :             :  *
       4                 :             :  * Licensed under the Apache License, Version 2.0 (the "License");
       5                 :             :  * you may not use this file except in compliance with the License.
       6                 :             :  * You may obtain a copy of the License at
       7                 :             :  *
       8                 :             :  *     http://www.apache.org/licenses/LICENSE-2.0
       9                 :             :  *
      10                 :             :  * Unless required by applicable law or agreed to in writing, software
      11                 :             :  * distributed under the License is distributed on an "AS IS" BASIS,
      12                 :             :  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
      13                 :             :  * See the License for the specific language governing permissions and
      14                 :             :  * limitations under the License.
      15                 :             :  */
      16                 :             : 
      17                 :             : #pragma once
      18                 :             : 
      19                 :             : #include <boost/system/error_code.hpp>
      20                 :             : #include <mutex>
      21                 :             : #include <optional>
      22                 :             : #include <string>
      23                 :             : #include <string_view>
      24                 :             : #include <utility>
      25                 :             : 
      26                 :             : #include "wirestead/diagnostics/error_types.hpp"
      27                 :             : 
      28                 :             : // Extracted from what used to be identical, independently-maintained
      29                 :             : // record_error()/last_error_info_ logic in TcpClient::Impl and
      30                 :             : // UdsClient::Impl (jwsung91/wirestead#445), now shared so every transport can
      31                 :             : // implement interface::Channel::last_error_info() the same way instead of
      32                 :             : // only two of seven having any detailed-error mechanism at all.
      33                 :             : namespace wirestead {
      34                 :             : namespace transport {
      35                 :             : 
      36                 :             : class ErrorInfoHolder {
      37                 :             :  public:
      38                 :         480 :   explicit ErrorInfoHolder(std::string component) : component_(std::move(component)) {}
      39                 :             : 
      40                 :         199 :   void record_error(diagnostics::ErrorLevel lvl, diagnostics::ErrorCategory cat, std::string_view operation,
      41                 :             :                     const boost::system::error_code& ec, std::string_view msg, bool retryable, uint32_t retry_count) {
      42                 :         199 :     diagnostics::ErrorInfo info(lvl, cat, component_, operation, msg, ec, retryable);
      43                 :         199 :     info.retry_count = retry_count;
      44                 :         199 :     std::lock_guard<std::mutex> lock(mtx_);
      45                 :         199 :     last_error_info_ = std::move(info);
      46                 :         199 :   }
      47                 :             : 
      48                 :         230 :   std::optional<diagnostics::ErrorInfo> last_error_info() const {
      49                 :         230 :     std::lock_guard<std::mutex> lock(mtx_);
      50                 :         460 :     return last_error_info_;
      51                 :         230 :   }
      52                 :             : 
      53                 :             :  private:
      54                 :             :   std::string component_;
      55                 :             :   mutable std::mutex mtx_;
      56                 :             :   std::optional<diagnostics::ErrorInfo> last_error_info_;
      57                 :             : };
      58                 :             : 
      59                 :             : }  // namespace transport
      60                 :             : }  // namespace wirestead