/* A summary RRD has a "num" and a "sum" DS (datasource) whereas the
host rrds only have "sum" (since num is always 1) */
static int
push_data_to_rrd( char *rrd, const char *sum, const char *num,
unsigned int step, unsigned int process_time,
ganglia_slope_t slope)
{
int rval;
int summary;
struct stat st;
/* if process_time is undefined, we set it to the current time */
if (!process_time)
process_time = time(0);
if (num)
summary=1;
else
summary=0;
if( stat(rrd, &st) )
{
rval = RRD_create( rrd, summary, step, process_time, slope);
if( rval )
return rval;
}
return RRD_update( rrd, sum, num, process_time );
}
/**
* @brief 写数据到RRD数据库中
* @param host host名字
* @param metric metric的名字
* @param value 数值
* @param num 个数
* @param step 抽取间隔
* @return 成功返回0,失败返回-1
*/
int c_rrd_handler::write_data_to_rrd(
const char *host,
const char *metric,
const char *value,
const char *num,
unsigned int step)
{
if (!m_inited)
{
ERROR_LOG("c_rrd_handler has not been inited.");
return -1;
}
if (NULL == host || NULL == metric || NULL == value) {
ERROR_LOG("Parameter ERROR: host[%s], metric[%s], value[%s]",
NULL == host ? "NULL" : host,
NULL == metric ? "NULL" : metric,
NULL == value ? "NULL" : value);
return -1;
}
char rrd_file_path[PATH_MAX] = {'\0'};
int len = 0;
int remain_len = PATH_MAX - 1;
char *write_pos = rrd_file_path;
//先把根目录拷进来
len = snprintf(write_pos, remain_len, "%s", m_rrd_base_dir);
write_pos += len;
remain_len -= len;
// char * relative_name = write_pos - 1;
//len = snprintf(write_pos, remain_len, "/clusters-data");
//write_pos += len;
//remain_len -= len;
//rrd_mkdir(rrd_file_path);
len = snprintf(write_pos, remain_len, "/%s", host);
write_pos += len;
remain_len -= len;
rrd_mkdir(rrd_file_path);
snprintf(write_pos, remain_len, "/%s.rrd", metric);
if(0 != access(rrd_file_path, F_OK))
{
bool summary = (num != NULL) ? true : false;
if(0 != RRD_create(rrd_file_path, summary, step))
{
return -1;
}
}
// *relative_name = '.';
// return RRD_update(relative_name, value, num);
return RRD_update(rrd_file_path, value, num);
}
/* A summary RRD has a "num" and a "sum" DS (datasource) whereas the
host rrds only have "sum" (since num is always 1) */
static int
push_data_to_rrd( char *rrd, const char *sum, const char *num,
unsigned int step, unsigned int process_time,
ganglia_slope_t slope)
{
int rval;
int summary;
struct stat st;
/* if process_time is undefined, we set it to the current time */
if (!process_time)
process_time = time(0);
if (num)
summary=1;
else
summary=0;
/* XXX: cache the results of the stat once hash table is fixed. */
if( stat(rrd, &st) )
{
rval = RRD_create( rrd, summary, step, process_time, slope);
if( rval )
return rval;
}
if (gmetad_config.rrdcached_addrstr != NULL)
{
ganglia_scoreboard_inc(METS_SENT_RRDCACHED);
ganglia_scoreboard_inc(METS_SENT_ALL);
last_rrdcached = apr_time_now(); //Updating global variable
return RRD_update_cached( rrd, sum, num, process_time );
}
else
{
ganglia_scoreboard_inc(METS_SENT_RRDTOOL);
ganglia_scoreboard_inc(METS_SENT_ALL);
last_rrdtool = apr_time_now(); //Updating global variable
return RRD_update( rrd, sum, num, process_time );
}
}
int
main(int argc, char **argv)
{
char dbpath[PATH_MAX] = "/tmp/tesla.rrd";
libusb_context *ctx = NULL;
libusb_device_handle *dev_handle = NULL;
signal(SIGINT, sigint_handler);
int c = 0;
while ((c = getopt(argc, argv, "hd")) != -1) {
switch (c) {
case 'd':
++_debug;
break;
case 'h':
default:
usage();
return 0;
}
}
argc -= optind;
argv += optind;
if (argc == 1)
realpath(argv[0], dbpath);
if (access(dbpath, F_OK) == -1) {
DPRINTF(1, "Creating db: %s\n", dbpath);
if (RRD_create(dbpath, 60))
return -1;
}
DPRINTF(2, "Using DB: %s\n", dbpath);
DPRINTF(1, "Please plug your CM160 device...\n");
if (scan_usb(ctx, &dev_handle))
return 1;
if (prepare_device(dev_handle))
return 1;
DPRINTF(1, "Start acquiring data...\n");
struct record_history *hist;
if (init_history(&hist))
return 1;
while (!stop)
if (get_data(dbpath, hist, dev_handle))
stop = 1;
DPRINTF(2, "\nClosing connection with the device\n");
if (libusb_release_interface(dev_handle, INTERFACE))
fprintf(stderr, "Cannot release interface.\n");
libusb_reset_device(dev_handle);
libusb_close(dev_handle);
libusb_exit(ctx);
free_history(&hist);
return 0;
}
