protected function getPayload(Interpreter $interpreter, $tuple)
{
try {
$this->openController();
$result = false;
// prevent div by zero
if (!isset($interpreter->calculated_ts) || $tuple[0] > $interpreter->calculated_ts) {
$result = $interpreter->convertRawTuple($tuple);
}
// 1st calculated value is invalid due to interpreter logic
if (!isset($interpreter->calculated_ts)) {
$result = false;
}
$interpreter->calculated_ts = $tuple[0];
} catch (\Exception $e) {
// make sure EntityManager is re-initialized on error
$this->openController(true);
return false;
}
return $result;
}
protected function convertRawTuple(Interpreter\Interpreter $interpreter, $tuple)
{
try {
$this->openController();
$result = false;
// convert raw reading to converted value
if (!isset($interpreter->push_ts)) {
// skip first conversion result
$interpreter->convertRawTuple($tuple);
} elseif ($tuple[0] > $interpreter->push_ts) {
// AccumulatorInterpreter special handling- suppress duplicate counter values
if ($interpreter instanceof Interpreter\AccumulatorInterpreter) {
if (isset($interpreter->push_raw_value) && $interpreter->push_raw_value == $tuple[1]) {
return false;
}
}
$result = $interpreter->convertRawTuple($tuple);
}
// indicate that tuple conversion has already happened once
$interpreter->push_ts = $tuple[0];
$interpreter->push_raw_value = $tuple[1];
} catch (\Exception $e) {
// make sure EntityManager is re-initialized on error
$this->openController(true);
return false;
}
return $result;
}
