/*********************************************************************************
|
* Copyright: (C) 2018 LingYun IoT System Studio
|
* All rights reserved.
|
*
|
* Filename: logger.c
|
* Description: This file is the linux infrastructural logger system library, which
|
* is not thread safe.
|
*
|
* Version: 1.0.0(08/08/2012~)
|
* Author: Guo Wenxue <guowenxue@gmail.com>
|
* ChangeLog: 1, Release initial version on "08/08/2018 04:24:01 PM"
|
*
|
********************************************************************************/
|
|
#include "logger.h"
|
|
#define PRECISE_TIME_FACTOR 1000
|
|
static unsigned long log_rollback_size = LOG_ROLLBACK_NONE;
|
|
static st_logger _g_logger;
|
static st_logger *g_logger = &_g_logger;
|
|
char *log_str[LOG_LEVEL_MAX + 1] = { "", "F", "E", "W", "N", "D", "I", "T", "M" };
|
|
static char *log_time_format = "%Y-%m-%d %H:%M:%S";
|
|
static void logger_default_signal_handler(int sig)
|
{
|
if (sig == SIGHUP)
|
{
|
signal(SIGHUP, logger_default_signal_handler);
|
log_fatal("SIGHUP received - reopenning log file [%s]", g_logger->file);
|
logger_reopen();
|
}
|
}
|
|
static void logger_banner(char *prefix)
|
{
|
fprintf(g_logger->fp, "%s log \"%s\" on level [%s] size [%lu], log system version %s\n",
|
prefix, g_logger->file, log_str[g_logger->level], log_rollback_size / 1024, LOG_VERSION_STR);
|
#if 0
|
#ifdef LOG_FILE_LINE
|
fprintf(g_logger->fp, " [Date] [Time] [Level] [PID/TID] [File/Line] [Content]\n");
|
#else
|
fprintf(g_logger->fp, " [Date] [Time] [Level] [PID/TID] [Content]\n");
|
#endif
|
#endif
|
fprintf(g_logger->fp, "-----------------------------------------------------------------------------\n");
|
}
|
|
static void check_and_rollback(void)
|
{
|
if (log_rollback_size != LOG_ROLLBACK_NONE)
|
{
|
long _curOffset = ftell(g_logger->fp);
|
|
if ((_curOffset != -1) && (_curOffset >= log_rollback_size))
|
{
|
char cmd[512];
|
|
snprintf(cmd, sizeof(cmd), "cp -f %s %s.roll", g_logger->file, g_logger->file);
|
system(cmd);
|
|
if (-1 == fseek(g_logger->fp, 0L, SEEK_SET))
|
fprintf(g_logger->fp, "log rollback fseek failed \n");
|
|
rewind(g_logger->fp);
|
|
truncate(g_logger->file, 0);
|
logger_banner("Already rollback");
|
}
|
}
|
}
|
|
int logger_init(char *filename, int level, int log_size)
|
{
|
struct sigaction act;
|
|
if( !filename || strlen(filename)<=0 )
|
{
|
fprintf(stderr, "%s() invalid input arguments\n", __FUNCTION__);
|
return -1;
|
}
|
|
memset(g_logger, 0, sizeof(st_logger));
|
|
strncpy(g_logger->file, filename, FILENAME_LEN);
|
g_logger->level = level;
|
g_logger->size = log_size;
|
|
log_rollback_size = g_logger->size <= 0 ? LOG_ROLLBACK_NONE : g_logger->size*1024; /* Unit KiB */
|
|
|
/* logger to console, just need point to standard error */
|
if (!strcmp(g_logger->file, DBG_LOG_FILE))
|
{
|
g_logger->fp = stderr;
|
log_rollback_size = LOG_ROLLBACK_NONE;
|
g_logger->flag |= LOGGER_CONSOLE;
|
goto OUT;
|
}
|
|
g_logger->fp = fopen(g_logger->file, "a+");
|
if ( !g_logger->fp )
|
{
|
fprintf(stderr, "Open log file \"%s\" failure\n", g_logger->file);
|
return -2;
|
}
|
|
OUT:
|
act.sa_handler = logger_default_signal_handler;
|
sigemptyset(&act.sa_mask);
|
act.sa_flags = 0;
|
sigaction(SIGHUP, &act, NULL);
|
|
logger_banner("\nInitialize");
|
|
return 0;
|
}
|
|
void logger_raw(const char *fmt, ...)
|
{
|
va_list argp;
|
|
if ( !g_logger->fp )
|
return;
|
|
check_and_rollback();
|
|
va_start(argp, fmt);
|
vfprintf(g_logger->fp, fmt, argp);
|
va_end(argp);
|
}
|
|
|
void logger_term(void)
|
{
|
if ( !g_logger->fp )
|
return;
|
|
logger_banner("\nTerminate");
|
logger_raw("\n\n");
|
|
fflush(g_logger->fp);
|
|
fclose(g_logger->fp);
|
g_logger->fp = NULL;
|
|
memset(g_logger, 0, sizeof(*g_logger));
|
|
return ;
|
}
|
|
|
int logger_reopen(void)
|
{
|
int rc = 0;
|
|
if (g_logger->flag & LOGGER_CONSOLE )
|
{
|
fflush(g_logger->fp);
|
g_logger->fp = stderr;
|
return 0;
|
}
|
|
if( g_logger->fp )
|
{
|
logger_banner("\nClose");
|
fflush(g_logger->fp);
|
|
g_logger->fp = fopen(g_logger->file, "a+");
|
|
if ( !g_logger->fp )
|
rc = -2;
|
}
|
else
|
{
|
rc = -3;
|
}
|
|
if (!rc)
|
{
|
logger_banner("\nReopen");
|
}
|
return rc;
|
}
|
|
static void logger_printout(char *level, char *fmt, va_list argp)
|
{
|
char buf[MAX_LOG_MESSAGE_LEN];
|
struct tm *local;
|
struct timeval now;
|
char timestr[256];
|
|
pthread_t tid;
|
|
check_and_rollback();
|
|
#ifdef MULTHREADS
|
tid = pthread_self();
|
#else
|
tid = getpid();
|
#endif
|
|
gettimeofday(&now, NULL);
|
local = localtime(&now.tv_sec);
|
|
strftime(timestr, 256, log_time_format, local);
|
vsnprintf(buf, MAX_LOG_MESSAGE_LEN, fmt, argp);
|
|
#ifdef DUMPLICATE_OUTPUT
|
printf("%s.%03ld [%s] [%06lu]: %s",
|
timestr, now.tv_usec / PRECISE_TIME_FACTOR, level, tid, buf);
|
#endif
|
|
if (g_logger->fp)
|
fprintf(g_logger->fp, "%s.%03ld [%s] [%06lu]: %s", timestr, now.tv_usec / PRECISE_TIME_FACTOR,
|
level, tid, buf);
|
|
if (g_logger->fp)
|
fflush(g_logger->fp);
|
}
|
|
static void logger_printout_line(char *level, char *fmt, char *file, int line, va_list argp)
|
{
|
char buf[MAX_LOG_MESSAGE_LEN];
|
struct tm *local;
|
struct timeval now;
|
char timestr[256];
|
|
pthread_t tid;
|
|
check_and_rollback();
|
|
#ifdef MULTHREADS
|
tid = pthread_self();
|
#else
|
tid = getpid();
|
#endif
|
|
gettimeofday(&now, NULL);
|
local = localtime(&now.tv_sec);
|
|
strftime(timestr, 256, log_time_format, local);
|
vsnprintf(buf, MAX_LOG_MESSAGE_LEN, fmt, argp);
|
|
#ifdef DUMPLICATE_OUTPUT
|
printf("%s.%03ld [%s] [%06lu] (%s [%04d]) : %s",
|
timestr, now.tv_usec / PRECISE_TIME_FACTOR, level, tid, file, line, buf);
|
#endif
|
|
if (g_logger->fp)
|
fprintf(g_logger->fp, "%s.%03ld [%s] [%06lu] (%s [%04d]) : %s",
|
timestr, now.tv_usec / PRECISE_TIME_FACTOR, level, tid, file, line, buf);
|
|
if (g_logger->fp)
|
fflush(g_logger->fp);
|
}
|
|
void logger_comm(int level, char *fmt, ...)
|
{
|
va_list argp;
|
|
if ( level > g_logger->level )
|
return;
|
|
va_start(argp, fmt);
|
logger_printout(log_str[level], fmt, argp);
|
va_end(argp);
|
}
|
|
void logger_line(int level, char *file, int line, char *fmt, ...)
|
{
|
va_list argp;
|
|
if ( level > g_logger->level )
|
return;
|
|
va_start(argp, fmt);
|
logger_printout_line(log_str[level], fmt, file, line, argp);
|
|
va_end(argp);
|
}
|
|
#define LINELEN 81
|
#define CHARS_PER_LINE 16
|
static char *print_char =
|
" "
|
" "
|
" !\"#$%&'()*+,-./"
|
"0123456789:;<=>?"
|
"@ABCDEFGHIJKLMNO"
|
"PQRSTUVWXYZ[\\]^_"
|
"`abcdefghijklmno"
|
"pqrstuvwxyz{|}~ "
|
" "
|
" "
|
" ???????????????"
|
"????????????????"
|
"????????????????"
|
"????????????????"
|
"????????????????"
|
"????????????????";
|
|
void logger_dump(int level, char *buf, int len)
|
{
|
int rc;
|
int idx;
|
char prn[LINELEN];
|
char lit[CHARS_PER_LINE + 2];
|
char hc[4];
|
short line_done = 1;
|
|
if ( level > g_logger->level )
|
return;
|
|
rc = len;
|
idx = 0;
|
lit[CHARS_PER_LINE] = '\0';
|
|
while (rc > 0)
|
{
|
if (line_done)
|
snprintf(prn, LINELEN, "%08X: ", idx);
|
|
do
|
{
|
unsigned char c = buf[idx];
|
snprintf(hc, 4, "%02X ", c);
|
strncat(prn, hc, LINELEN);
|
|
lit[idx % CHARS_PER_LINE] = print_char[c];
|
}
|
while (--rc > 0 && (++idx % CHARS_PER_LINE != 0));
|
|
line_done = (idx % CHARS_PER_LINE) == 0;
|
if (line_done)
|
{
|
#ifdef DUMPLICATE_OUTPUT
|
printf("%s %s\n", prn, lit);
|
#endif
|
if (g_logger->fp)
|
fprintf(g_logger->fp, "%s %s\n", prn, lit);
|
}
|
}
|
|
if (!line_done)
|
{
|
int ldx = idx % CHARS_PER_LINE;
|
lit[ldx++] = print_char[(int)buf[idx]];
|
lit[ldx] = '\0';
|
|
while ((++idx % CHARS_PER_LINE) != 0)
|
strncat(prn, " ", LINELEN);
|
|
#ifdef DUMPLICATE_OUTPUT
|
printf("%s %s\n", prn, lit);
|
#endif
|
if (g_logger->fp)
|
fprintf(g_logger->fp, "%s %s\n", prn, lit);
|
|
}
|
}
|
