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Logger_a.cpp
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Logger_a.cpp
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#include "Logger_a.h"
log_t *__static_logger_ptr = NULL;
static int CreateLogName(log_t *log)
{
struct tm tTemp = {0};
char fileName[512] = {0};
time_t tNow = time(NULL);
localtime_r(&tNow, &tTemp);
snprintf(fileName, sizeof(fileName), "%s/%s%04d%02d%02d%02d%02d%02d.log",
log->logPath, log->logName, tTemp.tm_year + 1900, tTemp.tm_mon + 1, tTemp.tm_mday,
tTemp.tm_hour, tTemp.tm_min, tTemp.tm_sec);
if (access(fileName, F_OK) != 0) {
close(log->fd);
log->fd = open(fileName, O_WRONLY|O_CREAT|O_NOCTTY|O_APPEND, 0666);
if (log->fd == -1 ) {
fprintf(stderr, "log_open: Opening logfile %s: %s",
fileName, strerror(errno));
return -1;
}
}
return 0;
}
/* Allows printf()-like interface to file descriptors without the
* complications that arise from mixing stdio and low level calls
* FIXME: Needs date and time before logfile entries.
*/
int lprintf( log_t *log, unsigned int level, char *fmt, ... ) {
int rc = -1;
int cnt = 0;
int linecnt = 0;
//char date[32] = {0};
//char threadnum[10] = {0};
char line[LOGLINE_MAX] = {0};
struct tm tTemp = {0};
struct timeval tvTemp = {0};
va_list ap;
static const char *levels[6] = { "[TRACE] ",
"[DEBUG] ",
"[INFO] ",
"[WARN] ",
"[ERROR] ",
"[FATAL] "};
if(!log) return -1;
/*
//If this is debug info, and we're not logging it, return
if( !(log->flags&LOG_DEBUG) && level == DEBUG ) return 0;
// Prepare the date string
if( !(log->flags&LOG_NODATE) ) {
now=time(NULL);
strcpy(date,ctime(&now));
date[strlen(date)-6]=' ';
date[strlen(date)-5]='\0';
}
// thread num
if( !(log->flags&LOG_NOTID) ) {
sprintf(threadnum, "(%lu) ", pthread_self());
}
//Format layout
cnt = snprintf(line, sizeof(line), "%s%s%s",
log->flags&LOG_NODATE ? "" : date,
log->flags&LOG_NOLVL ? "" :
(level > FATAL ? levels[0] : levels[level]),
log->flags&LOG_NOTID ? "" : threadnum);
*/
/* format datetime + level */
gettimeofday(&tvTemp, NULL);
localtime_r(&tvTemp.tv_sec, &tTemp);
if (log->flags&LOG_TID) {
cnt = sprintf(line, "[%04d-%02d-%02d %02d:%02d:%02d.%03ld][%lu]%s", tTemp.tm_year + 1900,
tTemp.tm_mon + 1, tTemp.tm_mday, tTemp.tm_hour, tTemp.tm_min, tTemp.tm_sec,
tvTemp.tv_usec/1000, pthread_self(), levels[level]);
} else {
cnt = sprintf(line, "[%04d-%02d-%02d %02d:%02d:%02d.%03ld]%s", tTemp.tm_year + 1900,
tTemp.tm_mon + 1, tTemp.tm_mday, tTemp.tm_hour, tTemp.tm_min, tTemp.tm_sec,
tvTemp.tv_usec/1000, levels[level]);
}
va_start(ap, fmt);
linecnt = vsnprintf(line+cnt, sizeof(line)-cnt, fmt, ap);
va_end(ap);
//line[sizeof(line)-1] = '\0';
/*
if( !(log->flags&LOG_NOLF) ) {
//chomp(line);
//strcpy(line+strlen(line), "\n");
}
*/
/* check date or size */
if (log->flags&LOG_DAILY) {
sem_wait(&log->sem);
if (log->cur_day != tTemp.tm_mday) {
if (CreateLogName(log) < 0)
return -1;
log->cur_day = tTemp.tm_mday;
}
rc = write(log->fd, line, linecnt + cnt);
sem_post(&log->sem);
} else {
sem_wait(&log->sem);
log->cur_size = log->cur_size + linecnt + cnt;
if (log->cur_size > log->max_size) {
if (CreateLogName(log) < 0)
return -1;
log->cur_size = linecnt + cnt;
}
rc = write(log->fd, line, linecnt + cnt);
sem_post(&log->sem);
}
if( !rc ) errno = 0;
return rc;
}
log_t *log_open(char *pathname, char *logname, int flags, unsigned int size) {
struct tm tTemp = {0};
char fileName[512] = {0};
log_t *log = (log_t *)malloc(sizeof(log_t));
if (!log) {
fprintf(stderr, "log_open: Unable to malloc()");
return NULL;
}
strcpy(log->logPath, pathname);
if (logname == NULL) {
strcpy(log->logName, "AppInfo");
} else {
strcpy(log->logName, logname);
}
time_t tNow = time(NULL);
localtime_r(&tNow, &tTemp);
snprintf(fileName, sizeof(fileName), "%s/%s%04d%02d%02d%02d%02d%02d.log",
log->logPath, log->logName, tTemp.tm_year + 1900, tTemp.tm_mon + 1, tTemp.tm_mday,
tTemp.tm_hour, tTemp.tm_min, tTemp.tm_sec);
log->cur_size = 0;
log->flags = flags;
if (size == 0)
log->max_size = 1024 * 1024 * 1024;
else
log->max_size = size;
log->cur_day = tTemp.tm_mday;
if (!strcmp(logname,"-") ) {
log->fd = 2;
} else {
log->fd = open(fileName, O_WRONLY|O_CREAT|O_NOCTTY|O_APPEND, 0666);
}
if (log->fd == -1 ) {
fprintf(stderr, "log_open: Opening logfile %s: %s",
fileName, strerror(errno));
free(log);
return NULL;
}
if (sem_init(&log->sem, 0, 1) == -1 ) {
fprintf(stderr, "log_open: Could not initialize log semaphore.");
close(log->fd);
free(log);
return NULL;
}
__static_logger_ptr = log;
return log;
}
int log_close() {
log_t *log = __static_logger_ptr;
if (log != NULL) {
sem_wait(&log->sem);
sem_destroy(&log->sem);
close(log->fd);
free(log);
__static_logger_ptr = NULL;
}
return 0;
}