*/
void Sensor_Start(Sensor * s, const char * experiment_name)
{
+ // Set filename
char filename[BUFSIZ];
- if (sprintf(filename, "%s_%d", experiment_name, s->id) >= BUFSIZ)
+ if (sprintf(filename, "%s_s%d", experiment_name, s->id) >= BUFSIZ)
{
Fatal("Experiment name \"%s\" too long (>%d)", experiment_name, BUFSIZ);
}
+
+ Log(LOGDEBUG, "Sensor %d with DataFile \"%s\"", s->id, filename);
+ // Open DataFile
Data_Open(&(s->data_file), filename);
-
+
+ s->record_data = true; // Don't forget this!
+
+ // Create the thread
pthread_create(&(s->thread), NULL, Sensor_Loop, (void*)(s));
}
*/
void Sensor_Stop(Sensor * s)
{
+ // Stop
if (s->record_data)
{
s->record_data = false;
- pthread_join(s->thread, NULL);
- Data_Close(&(s->data_file));
+ pthread_join(s->thread, NULL); // Wait for thread to exit
+ Data_Close(&(s->data_file)); // Close DataFile
+ s->newest_data.time_stamp = 0;
+ s->newest_data.value = 0;
}
}
if (result)
{
s->newest_data.time_stamp = d->time_stamp;
+ s->newest_data.value = d->value;
}
return result;
}
void * Sensor_Loop(void * arg)
{
Sensor * s = (Sensor*)(arg);
+ Log(LOGDEBUG, "Sensor %d starts", s->id);
// Until the sensor is stopped, record data points
while (s->record_data)
{
DataPoint d;
+ //Log(LOGDEBUG, "Sensor %d reads data [%f,%f]", s->id, d.time_stamp, d.value);
if (Sensor_Read(s, &d)) // If new DataPoint is read:
{
+ //Log(LOGDEBUG, "Sensor %d saves data [%f,%f]", s->id, d.time_stamp, d.value);
Data_Save(&(s->data_file), &d, 1); // Record it
}
}
// Needed to keep pthreads happy
+
+ Log(LOGDEBUG, "Sensor %d finished", s->id);
return NULL;
}
case JSON:
FCGI_BeginJSON(context, STATUS_OK);
FCGI_JSONLong("id", id);
- FCGI_JSONKey("data");
break;
default:
FCGI_PrintRaw("Content-type: text/plain\r\n\r\n");
} SensorParams;
// Fill values appropriately
- if (!FCGI_ParseRequest(context, params, values, sizeof(values)))
+ if (!FCGI_ParseRequest(context, params, values, sizeof(values)/sizeof(FCGIValue)))
{
// Error occured; FCGI_RejectJSON already called
return;
}
+
// Error checking on sensor id
if (id < 0 || id >= NUMSENSORS)
{
- Log(LOGERR, "Invalid id %d", id);
- FCGI_RejectJSON(context, "Invalid id"); // Whoops, I do still need this!
- }
-
- DataFormat format = JSON;
-
- // Check if format type was specified
- if (FCGI_RECEIVED(values[FORMAT].flags))
- {
- if (strcmp(fmt_str, "json") == 0)
- format = JSON;
- else if (strcmp(fmt_str, "tsv") == 0)
- format = TSV;
- else
- Log(LOGERR, "Unknown format type \"%s\"", fmt_str);
+ FCGI_RejectJSON(context, "Invalid sensor id");
+ return;
}
-
- // Get Sensor
Sensor * s = g_sensors+id;
+ DataFormat format = Data_GetFormat(&(values[FORMAT]));
+
// Begin response
Sensor_BeginResponse(context, id, format);
-
- // If a time was specified
- if (FCGI_RECEIVED(values[START_TIME].flags) || FCGI_RECEIVED(values[END_TIME].flags))
- {
- // Wrap times relative to the current time
- if (start_time < 0)
- start_time += current_time;
- if (end_time < 0)
- end_time += current_time;
- // Print points by time range
- Data_PrintByTimes(&(s->data_file), start_time, end_time, format);
-
- }
- else // No time was specified; just return a recent set of points
- {
- pthread_mutex_lock(&(s->data_file.mutex));
- int start_index = s->data_file.num_points-DATA_BUFSIZ;
- int end_index = s->data_file.num_points-1;
- pthread_mutex_unlock(&(s->data_file.mutex));
-
- // Print points by indexes
- Data_PrintByIndexes(&(s->data_file), start_index, end_index, format);
- }
+ // Print Data
+ Data_Handler(&(s->data_file), &(values[START_TIME]), &(values[END_TIME]), format, current_time);
// Finish response
Sensor_EndResponse(context, id, format);