/*
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* Copyright (c) 2010-2019 Belledonne Communications SARL.
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*
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* This file is part of Liblinphone.
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef _LINPHONE_LOG_H_
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#define _LINPHONE_LOG_H_
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#include "types.h"
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#include "defs.h"
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#ifdef __cplusplus
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extern "C" {
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#endif
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/**
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* @addtogroup logging
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* @{
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*/
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/**
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* @brief Singleton class giving access to logging features.
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*/
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typedef struct _LinphoneLoggingService LinphoneLoggingService;
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/**
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* @brief Listener for #LinphoneLoggingService.
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*/
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typedef struct _LinphoneLoggingServiceCbs LinphoneLoggingServiceCbs;
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/**
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* @brief Verbosity levels of log messages.
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*/
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typedef enum _LinphoneLogLevel {
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LinphoneLogLevelDebug = 1, /**< @brief Level for debug messages. */
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LinphoneLogLevelTrace = 1<<1, /**< @brief Level for traces. */
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LinphoneLogLevelMessage = 1<<2, /**< @brief Level for information messages. */
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LinphoneLogLevelWarning = 1<<3, /**< @brief Level for warning messages. */
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LinphoneLogLevelError = 1<<4, /**< @brief Level for error messages. */
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LinphoneLogLevelFatal = 1<<5 /**< @brief Level for fatal error messages. */
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} LinphoneLogLevel;
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/**
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* @brief Type of callbacks called each time liblinphone write a log message.
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*
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* @param log_service A pointer on the logging service singleton.
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* @param domain A string describing which sub-library of liblinphone the message is coming from.
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* @param lev Verbosity level of the message.
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* @param message Content of the message.
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*/
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typedef void (*LinphoneLoggingServiceCbsLogMessageWrittenCb)(LinphoneLoggingService *log_service, const char *domain, LinphoneLogLevel lev, const char *message);
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/**
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* @brief Gets the singleton logging service object.
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*
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* The singleton is automatically instantiated if it hasn't
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* been done yet.
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*
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* @return A pointer on the singleton.
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*/
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LINPHONE_PUBLIC LinphoneLoggingService *linphone_logging_service_get(void);
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/**
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* @brief Increases the reference counter.
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*/
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LINPHONE_PUBLIC LinphoneLoggingService *linphone_logging_service_ref(LinphoneLoggingService *service);
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/**
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* @brief Decreases the reference counter and destroy the object
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* if the counter reaches 0.
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*/
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LINPHONE_PUBLIC void linphone_logging_service_unref(LinphoneLoggingService *service);
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/**
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* @brief Gets the logging service listener.
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* @deprecated Use add_callbacks / remove_callbacks instead
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*/
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LINPHONE_PUBLIC LinphoneLoggingServiceCbs *linphone_logging_service_get_callbacks(const LinphoneLoggingService *log_service);
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/**
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* Adds a callback object to the list of listeners
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* @param log_service the LinphoneLoggingService object
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* @param cbs the LinphoneLoggingServiceCbs to add
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*/
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LINPHONE_PUBLIC void linphone_logging_service_add_callbacks(LinphoneLoggingService *log_service, LinphoneLoggingServiceCbs *cbs);
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/**
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* Removes a callback object from the list of listeners
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* @param log_service the LinphoneLoggingService object
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* @param cbs the LinphoneLoggingServiceCbs to remove
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*/
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LINPHONE_PUBLIC void linphone_logging_service_remove_callbacks(LinphoneLoggingService *log_service, LinphoneLoggingServiceCbs *cbs);
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/**
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* Returns the current callbacks being called while iterating on callbacks
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* @param log_service the LinphoneLoggingService object
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* @return A pointer to the current LinphoneLoggingServiceCbs object
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*/
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LINPHONE_PUBLIC LinphoneLoggingServiceCbs *linphone_logging_service_get_current_callbacks(const LinphoneLoggingService *log_service);
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/**
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* @brief Set the verbosity of the log.
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*
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* For instance, a level of #LinphoneLogLevelMessage will let pass fatal, error, warning and message-typed messages
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* whereas trace and debug messages will be dumped out.
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*/
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LINPHONE_PUBLIC void linphone_logging_service_set_log_level(LinphoneLoggingService *log_service, LinphoneLogLevel level);
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/**
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* @brief Sets the types of messages that will be authorized to be written in the log.
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* @param log_service The logging service singleton.
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* @param mask Example: #LinphoneLogLevelMessage|#LinphoneLogLevelError will ONLY let pass message-typed and error messages.
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* @note Calling that function reset the log level that has been specified by #linphone_logging_service_set_log_level().
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*/
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LINPHONE_PUBLIC void linphone_logging_service_set_log_level_mask(LinphoneLoggingService *log_service, unsigned int mask);
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/**
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* @brief Gets the log level mask.
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*/
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LINPHONE_PUBLIC unsigned int linphone_logging_service_get_log_level_mask(const LinphoneLoggingService *log_service);
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/**
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* @brief Enables logging in a file.
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*
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* That function enables an internal log handler that writes log messages in
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* log-rotated files.
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*
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* @param dir Directory where to create the distinct parts of the log.
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* @param filename Name of the log file.
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* @param max_size The maximal size of each part of the log. The log rotating is triggered
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* each time the currently opened log part reach that limit.
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*/
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LINPHONE_PUBLIC void linphone_logging_service_set_log_file(const LinphoneLoggingService *service, const char *dir, const char *filename, size_t max_size);
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/**
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* @brief Set the domain where application logs are written (for example with #linphone_logging_service_message()).
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* @param log_service The logging service singleton.
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* @param domain The domain.
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* @note The domain is mandatory to write logs. This needs to be set before setting the log level.
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*/
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LINPHONE_PUBLIC void linphone_logging_service_set_domain(LinphoneLoggingService *log_service, const char *domain);
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/**
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* @brief Get the domain where application logs are written (for example with #linphone_logging_service_message()).
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* @param log_service The logging service singleton.
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*/
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LINPHONE_PUBLIC const char *linphone_logging_service_get_domain(LinphoneLoggingService *log_service);
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/**
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* @brief Write a LinphoneLogLevelDebug message to the logs.
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* @param log_service The logging service singleton.
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* @param msg The log message.
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*/
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LINPHONE_PUBLIC void linphone_logging_service_debug(LinphoneLoggingService *log_service, const char *msg);
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/**
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* @brief Write a LinphoneLogLevelTrace message to the logs.
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* @param log_service The logging service singleton.
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* @param msg The log message.
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*/
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LINPHONE_PUBLIC void linphone_logging_service_trace(LinphoneLoggingService *log_service, const char *msg);
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/**
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* @brief Write a LinphoneLogLevelMessage message to the logs.
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* @param log_service The logging service singleton.
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* @param msg The log message.
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*/
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LINPHONE_PUBLIC void linphone_logging_service_message(LinphoneLoggingService *log_service, const char *msg);
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/**
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* @brief Write a LinphoneLogLevelWarning message to the logs.
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* @param log_service The logging service singleton.
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* @param msg The log message.
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*/
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LINPHONE_PUBLIC void linphone_logging_service_warning(LinphoneLoggingService *log_service, const char *msg);
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/**
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* @brief Write a LinphoneLogLevelError message to the logs.
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* @param log_service The logging service singleton.
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* @param msg The log message.
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*/
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LINPHONE_PUBLIC void linphone_logging_service_error(LinphoneLoggingService *log_service, const char *msg);
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/**
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* @brief Write a LinphoneLogLevelFatal message to the logs.
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* @param log_service The logging service singleton.
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* @param msg The log message.
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*/
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LINPHONE_PUBLIC void linphone_logging_service_fatal(LinphoneLoggingService *log_service, const char *msg);
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/**
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* @brief Increases the reference counter.
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*/
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LINPHONE_PUBLIC LinphoneLoggingServiceCbs *linphone_logging_service_cbs_ref(LinphoneLoggingServiceCbs *cbs);
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/**
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* @brief Decreases the reference counter.
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*
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* The object is automatically destroyed once the counter reach 0.
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*/
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LINPHONE_PUBLIC void linphone_logging_service_cbs_unref(LinphoneLoggingServiceCbs *cbs);
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/**
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* @brief Sets the callback to call each time liblinphone writes a log message.
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*/
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LINPHONE_PUBLIC void linphone_logging_service_cbs_set_log_message_written(LinphoneLoggingServiceCbs *cbs, LinphoneLoggingServiceCbsLogMessageWrittenCb cb);
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/**
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* @brief Gets the value of the message event callback.
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*/
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LINPHONE_PUBLIC LinphoneLoggingServiceCbsLogMessageWrittenCb linphone_logging_service_cbs_get_log_message_written(const LinphoneLoggingServiceCbs *cbs);
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/**
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* @brief Pass a pointer on a custom object.
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*
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* That pointer can be get back by callbacks by using #linphone_logging_service_get_cbs() and #linphone_logging_service_cbs_get_user_data().
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*/
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LINPHONE_PUBLIC void linphone_logging_service_cbs_set_user_data(LinphoneLoggingServiceCbs *cbs, void *user_data);
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/**
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* @brief Gets the user_data pointer back.
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*/
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LINPHONE_PUBLIC void *linphone_logging_service_cbs_get_user_data(const LinphoneLoggingServiceCbs *cbs);
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/**
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* @}
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*/
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#ifdef __cplusplus
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}
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#endif
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#endif // _LINPHONE_LOG_H_
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