eddy/small_tel
1
0
Fork 0
mirror of https://github.com/eddyem/small_tel.git synced 2026-06-19 10:26:25 +03:00
Code Issues Packages Projects Releases Wiki Activity

add docs, make little fixes

Browse Source
This commit is contained in:
Edward Emelianov
2026-05-21 17:38:44 +03:00
parent b28832fe41
commit 51869f0137
5 changed files with 175 additions and 12 deletions
Download Patch File Download Diff File Expand all files Collapse all files

37
Daemons/weather_logger/server.c
View File

@@ -128,7 +128,15 @@ void set_nettimeout(double dt){
*/
static bool write2fd(senslog_t *sensor, const char *str, size_t len){
if(!sensor || !str || len < 1) return false;
if(write(sensor->fd, str, len) != (ssize_t)len){
const char *ptr = str;
size_t written = 0;
while(len){
ssize_t l = write(sensor->fd, ptr, len);
if(l < 0) break;
len -= l;
ptr += l;
}
if(written != len){
LOGERR("Can't write '%s' to file %s: %s", str, sensor->path, strerror(errno));
WARNX("Can't write data to file");
close(sensor->fd);
@@ -405,8 +413,10 @@ static bool analyse_list(sl_sock_t *sock){
if(Nsensors <= idx){
int oldN = Nsensors;
Nsensors = idx + 1;
senslog_t *old_sensors = sensors;
sensors = realloc(sensors, Nsensors * sizeof(senslog_t));
if(!sensors){
sensors = old_sensors; // restore old pointer instead of NULL
sensors_delete();
LOGERR("analyse_list(): error in realloc()");
WARNX("analyse_list(): error in realloc()");
@@ -545,8 +555,11 @@ static bool poll_server_answers(sl_sock_t *sock){
// now throw data to disk
DBG("throw '%s' with length %d to disk", sensor->buf, sensor->buflen);
allOK = write2fd(sensor, sensor->buf, sensor->buflen);
write2fd(sensor, "\n", 1);
sensor->lasttimestamp = ts;
if(allOK){
write2fd(sensor, "\n", 1);
fsync(sensor->fd); // sync last full record
sensor->lasttimestamp = ts;
}
DBG("Data for %d is %swritten to disk", sensor->idx, allOK ? "" : "not ");
}
}
@@ -596,8 +609,22 @@ static bool poll_server_answers(sl_sock_t *sock){
}
}
}
sensor->buflen += snprintf(sensor->buf + sensor->buflen, BUFSIZ-sensor->buflen, "%s%s",
value, sensor->nvalues-1 != idx ? ", " : "");
int avail = BUFSIZ - sensor->buflen;
if(avail <= 0){
LOGWARN("Sensor %d: writing buffer overfull", sensor->idx);
WARNX("Overfull; clear all");
sensor->lastvalidx = -1;
sensor->buflen = 0;
return false;
}
int n = snprintf(sensor->buf + sensor->buflen, avail, "%s%s",
value, sensor->nvalues-1 != idx ? ", " : "");
if(n >= avail){
// Data would be truncated  handle error or discard
n = avail - 1;
LOGWARN("Sensor %d: writing buffer truncated", sensor->idx);
}
sensor->buflen += n;
sensor->lastvalidx = idx;
DBG("Now buf[%d]=%s", sensor->idx, sensor->buf);
return true;