Analytics: using tolerance parameter in PersystSQL for fuzzy queries

analytics/operators/persystsql/PerSystSqlOperator.cpp

@@ -145,6 +145,7 @@ void PerSystSqlOperator::compute(U_Ptr unit, qeJobData& jobData) {
 	// Clearing the buffer, if already allocated
 	_buffer.clear();
 	size_t elCtr = 0;
+	uint64_t tolerance_ms = (uint64_t)_interval * 3 / 2;
 	uint64_t my_timestamp = getTimestamp() - _go_back_ns;
 	// Job units are hierarchical, and thus we iterate over all sub-units associated to each single node
 	std::vector<std::string> vectorOfSensorNames;
@@ -166,7 +167,7 @@ void PerSystSqlOperator::compute(U_Ptr unit, qeJobData& jobData) {
 		LOG(debug) << "PerSystSql Operator: No names found for vectorOfSensorNames ";
 		return;
 	}
-	if (!_queryEngine.querySensor(vectorOfSensorNames, my_timestamp, my_timestamp, _buffer, false)) {
+	if (!_queryEngine.querySensor(vectorOfSensorNames, my_timestamp, my_timestamp, _buffer, false, tolerance_ms * 1000000)) {
 		LOG(debug)<< "PerSystSql Operator " << _name << " cannot read vector sensor " << (*vectorOfSensorNames.begin()) << "!";
 	}
 	uint64_t measurement_ts = 0;