86 lines
3.6 KiB
C++
86 lines
3.6 KiB
C++
//
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// Copyright Aliaksei Levin (levlam@telegram.org), Arseny Smirnov (arseny30@gmail.com) 2014-2019
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//
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// Distributed under the Boost Software License, Version 1.0. (See accompanying
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// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
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//
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#pragma once
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/**
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* \file
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* C++ interface for managing the internal logging of TDLib.
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* By default TDLib writes logs to stderr or an OS specific log and uses a verbosity level of 5.
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*/
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#include <cstdint>
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#include <string>
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namespace td {
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/**
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* Interface for managing the internal logging of TDLib.
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* By default TDLib writes logs to stderr or an OS specific log and uses a verbosity level of 5.
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* These functions are deprecated since TDLib 1.4.0 in favor of the td::td_api::setLogVerbosityLevel,
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* td::td_api::setLogStream and other synchronous requests for managing the intrenal TDLib logging.
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*/
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class Log {
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public:
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/**
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* Sets the path to the file to where the internal TDLib log will be written.
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* By default TDLib writes logs to stderr or an OS specific log.
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* Use this method to write the log to a file instead.
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*
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* \deprecated Use synchronous td::td_api::setLogStream request instead.
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* \param[in] file_path Path to a file where the internal TDLib log will be written. Use an empty path to
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* switch back to the default logging behaviour.
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* \return True on success, or false otherwise, i.e. if the file can't be opened for writing.
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*/
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static bool set_file_path(std::string file_path);
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/**
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* Sets maximum size of the file to where the internal TDLib log is written before the file will be auto-rotated.
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* Unused if log is not written to a file. Defaults to 10 MB.
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*
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* \deprecated Use synchronous td::td_api::setLogStream request instead.
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* \param[in] max_file_size Maximum size of the file to where the internal TDLib log is written before the file
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* will be auto-rotated. Should be positive.
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*/
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static void set_max_file_size(std::int64_t max_file_size);
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/**
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* Sets the verbosity level of the internal logging of TDLib.
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* By default the TDLib uses a verbosity level of 5 for logging.
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*
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* \deprecated Use synchronous td::td_api::setLogVerbosityLevel request instead.
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* \param[in] new_verbosity_level New value of the verbosity level for logging.
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* Value 0 corresponds to fatal errors,
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* value 1 corresponds to errors,
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* value 2 corresponds to warnings and debug warnings,
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* value 3 corresponds to informational,
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* value 4 corresponds to debug,
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* value 5 corresponds to verbose debug,
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* value greater than 5 and up to 1024 can be used to enable even more logging.
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*/
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static void set_verbosity_level(int new_verbosity_level);
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/**
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* A type of callback function that will be called when a fatal error happens.
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*
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* \param error_message Null-terminated string with a description of a happened fatal error.
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*/
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using FatalErrorCallbackPtr = void (*)(const char *error_message);
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/**
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* Sets the callback that will be called when a fatal error happens.
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* None of the TDLib methods can be called from the callback.
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* The TDLib will crash as soon as callback returns.
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* By default the callback is not set.
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*
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* \param[in] callback Callback that will be called when a fatal error happens.
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* Pass nullptr to remove the callback.
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*/
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static void set_fatal_error_callback(FatalErrorCallbackPtr callback);
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};
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} // namespace td
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