static apt_bool_t apt_log_file_dump(apt_log_file_data_t *file_data, const char *log_entry, apr_size_t size)
{
apr_thread_mutex_lock(file_data->mutex);
file_data->cur_size += size;
if(file_data->cur_size > file_data->max_size) {
const char *log_file_path;
/* close current log file */
fclose(file_data->file);
/* roll over the next log file */
file_data->cur_file_index++;
file_data->cur_file_index %= file_data->max_file_count;
/* open log file */
log_file_path = apt_log_file_path_make(file_data);
file_data->file = fopen(log_file_path,"wb");
if(!file_data->file) {
return FALSE;
}
file_data->cur_size = size;
}
/* write to log file */
fwrite(log_entry,1,size,file_data->file);
fflush(file_data->file);
apr_thread_mutex_unlock(file_data->mutex);
return TRUE;
}
static apr_byte_t apt_log_file_exist(apt_log_file_data_t *file_data)
{
FILE* fp;
const char *log_file_path;
log_file_path = apt_log_file_path_make(file_data);
fp = fopen(log_file_path,"rb");
if(!fp) return 0;
fclose(fp);
return 1;
}
static apr_size_t apt_log_file_get_size(apt_log_file_data_t *file_data)
{
FILE* fp;
const char *log_file_path;
apr_size_t ret;
log_file_path = apt_log_file_path_make(file_data);
fp = fopen(log_file_path,"rb");
if(!fp) return 0;
fseek(fp,0,SEEK_END);
ret = ftell(fp);
fclose(fp);
return ret;
}
APT_DECLARE(apt_bool_t) apt_log_file_open(const char *dir_path, const char *file_name, apr_size_t max_file_size, apr_size_t max_file_count, apr_pool_t *pool)
{
const char *log_file_path;
apt_log_file_data_t *file_data;
if(!apt_logger || !dir_path || !file_name) {
return FALSE;
}
if(apt_logger->file_data) {
return FALSE;
}
file_data = apr_palloc(pool,sizeof(apt_log_file_data_t));
file_data->log_dir_path = dir_path;
file_data->log_file_name = file_name;
file_data->cur_file_index = 0;
file_data->cur_size = 0;
file_data->max_file_count = max_file_count;
file_data->max_size = max_file_size;
file_data->mutex = NULL;
file_data->pool = pool;
if(!file_data->max_size) {
file_data->max_file_count = MAX_LOG_FILE_SIZE;
}
if(!file_data->max_file_count) {
file_data->max_file_count = MAX_LOG_FILE_COUNT;
}
/* create mutex */
if(apr_thread_mutex_create(&file_data->mutex,APR_THREAD_MUTEX_DEFAULT,pool) != APR_SUCCESS) {
return FALSE;
}
/* open log file */
log_file_path = apt_log_file_path_make(file_data);
file_data->file = fopen(log_file_path,"wb");
if(!file_data->file) {
apr_thread_mutex_destroy(file_data->mutex);
return FALSE;
}
apt_logger->file_data = file_data;
return TRUE;
}
APT_DECLARE(apt_bool_t) apt_log_file_open(
const char *dir_path,
const char *file_name,
apr_size_t max_file_size,
apr_size_t max_file_count,
apt_bool_t append,
apr_pool_t *pool)
{
const char *log_file_path;
apt_log_file_data_t *file_data;
if(!apt_logger || !dir_path || !file_name) {
return FALSE;
}
if(apt_logger->file_data) {
return FALSE;
}
file_data = apr_palloc(pool,sizeof(apt_log_file_data_t));
file_data->log_dir_path = apr_pstrdup(pool,dir_path);
file_data->log_file_name = apr_pstrdup(pool,file_name);
file_data->cur_file_index = 0;
file_data->cur_size = 0;
file_data->max_file_count = max_file_count;
file_data->max_size = max_file_size;
file_data->append = append;
file_data->mutex = NULL;
file_data->pool = pool;
if(!file_data->max_size) {
file_data->max_size = MAX_LOG_FILE_SIZE;
}
if(!file_data->max_file_count) {
file_data->max_file_count = MAX_LOG_FILE_COUNT;
}
if(file_data->append == TRUE) {
/* iteratively find the last created file */
while(file_data->cur_file_index<file_data->max_file_count)
{
if(apt_log_file_exist(file_data) == 0)
{
if(file_data->cur_file_index > 0)
file_data->cur_file_index--;
file_data->cur_size = apt_log_file_get_size(file_data);
break;
}
file_data->cur_file_index++;
}
/* if all the files have been created start rewriting from beginning */
if(file_data->cur_file_index>=file_data->max_file_count)
{
file_data->cur_file_index=0;
file_data->cur_size=0;
log_file_path = apt_log_file_path_make(file_data);
file_data->file = fopen(log_file_path,"wb"); /* truncate the first file to zero length */
fclose(file_data->file);
}
}
/* create mutex */
if(apr_thread_mutex_create(&file_data->mutex,APR_THREAD_MUTEX_DEFAULT,pool) != APR_SUCCESS) {
return FALSE;
}
/* open log file */
log_file_path = apt_log_file_path_make(file_data);
file_data->file = fopen(log_file_path,file_data->append == TRUE ? "ab" : "wb");
if(!file_data->file) {
apr_thread_mutex_destroy(file_data->mutex);
return FALSE;
}
apt_logger->file_data = file_data;
return TRUE;
}
