fd11e6a7f5
void session_enable_log(SESSION* ses, logfile_id_t id) and void session_disable_log(SESSION* ses, logfile_id_t id) Which switch specific log type on/off if the log type in question is not generally enabled. Each thread carries a thread-specific struct log_info_t which includes members for current session id and bitfield for enabled log types for the current session. That information is checked before actual log write functions are called. Each file where session-specific logging is used, must include the following exports: /** Defined in log_manager.cc */ extern int lm_enabled_logfiles_bitmask; extern size_t log_ses_count[]; extern __thread log_info_t tls_log_info;
135 lines
3.8 KiB
C
135 lines
3.8 KiB
C
/*
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* This file is distributed as part of the MariaDB Corporation MaxScale. It is free
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* software: you can redistribute it and/or modify it under the terms of the
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* GNU General Public License as published by the Free Software Foundation,
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* version 2.
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*
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* This program is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
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* FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
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* details.
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*
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* You should have received a copy of the GNU General Public License along with
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* this program; if not, write to the Free Software Foundation, Inc., 51
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* Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Copyright MariaDB Corporation Ab 2013-2014
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*/
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#if !defined(LOG_MANAGER_H)
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# define LOG_MANAGER_H
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typedef struct filewriter_st filewriter_t;
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typedef struct logfile_st logfile_t;
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typedef struct fnames_conf_st fnames_conf_t;
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typedef struct logmanager_st logmanager_t;
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typedef enum {
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BB_READY = 0x00,
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BB_FULL,
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BB_CLEARED
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} blockbuf_state_t;
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typedef enum {
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LOGFILE_ERROR = 1,
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LOGFILE_FIRST = LOGFILE_ERROR,
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LOGFILE_MESSAGE = 2,
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LOGFILE_TRACE = 4,
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LOGFILE_DEBUG = 8,
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LOGFILE_LAST = LOGFILE_DEBUG
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} logfile_id_t;
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typedef enum { FILEWRITER_INIT, FILEWRITER_RUN, FILEWRITER_DONE }
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filewriter_state_t;
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/**
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* Thread-specific logging information.
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*/
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typedef struct log_info_st
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{
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size_t li_sesid;
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int li_enabled_logs;
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} log_info_t;
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#define LE LOGFILE_ERROR
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#define LM LOGFILE_MESSAGE
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#define LT LOGFILE_TRACE
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#define LD LOGFILE_DEBUG
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/**
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* Check if specified log type is enabled in general or if it is enabled
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* for the current session.
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*/
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#define LOG_IS_ENABLED(id) (((lm_enabled_logfiles_bitmask & id) || \
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(log_ses_count[id] > 0 && \
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tls_log_info.li_enabled_logs & id)) ? true : false)
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#define LOG_MAY_BE_ENABLED(id) (((lm_enabled_logfiles_bitmask & id) || \
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log_ses_count[id] > 0) ? true : false)
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/**
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* Execute the given command if specified log is enabled in general or
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* if there is at least one session for whom the log is enabled.
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*/
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#define LOGIF_MAYBE(id,cmd) if (LOG_MAY_BE_ENABLED(id)) \
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{ \
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cmd; \
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}
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/**
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* Execute the given command if specified log is enabled in general or
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* if the log is enabled for the current session.
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*/
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#define LOGIF(id,cmd) if (LOG_IS_ENABLED(id)) \
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{ \
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cmd; \
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}
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#if !defined(LOGIF)
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#define LOGIF(id,cmd) if (lm_enabled_logfiles_bitmask & id) \
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{ \
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cmd; \
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}
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#endif
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/**
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* UNINIT means zeroed memory buffer allocated for the struct.
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* INIT means that struct members may have values, and memory may
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* have been allocated. Done function must check and free it.
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* RUN Struct is valid for run-time checking.
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* DONE means that possible memory allocations have been released.
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*/
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typedef enum { UNINIT = 0, INIT, RUN, DONE } flat_obj_state_t;
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EXTERN_C_BLOCK_BEGIN
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bool skygw_logmanager_init(int argc, char* argv[]);
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void skygw_logmanager_done(void);
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void skygw_logmanager_exit(void);
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/**
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* free private write buffer list
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*/
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void skygw_log_done(void);
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int skygw_log_write(logfile_id_t id, const char* format, ...);
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int skygw_log_flush(logfile_id_t id);
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int skygw_log_rotate(logfile_id_t id);
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int skygw_log_write_flush(logfile_id_t id, const char* format, ...);
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int skygw_log_enable(logfile_id_t id);
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int skygw_log_disable(logfile_id_t id);
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EXTERN_C_BLOCK_END
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void writebuf_clear(void* data);
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const char* get_trace_prefix_default(void);
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const char* get_trace_suffix_default(void);
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const char* get_msg_prefix_default(void);
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const char* get_msg_suffix_default(void);
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const char* get_err_prefix_default(void);
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const char* get_err_suffix_default(void);
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const char* get_logpath_default(void);
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#endif /** LOG_MANAGER_H */
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