Help for ocpp.csms.extract_meter

ocpp.csms ยท extract_meter

Sample CLI

gway ocpp.csms extract-meter

Full Code

def extract_meter(tx):
    """
    Return the latest Energy.Active.Import.Register (kWh) from MeterValues or meterStop.
    """
    if not tx:
        return "-"
    # Try meterStop first
    if tx.get("meterStop") is not None:
        try:
            return float(tx["meterStop"]) / 1000.0  # assume Wh, convert to kWh
        except Exception:
            return tx["meterStop"]
    # Try MeterValues: last entry, find Energy.Active.Import.Register
    mv = tx.get("MeterValues", [])
    if mv:
        last_mv = mv[-1]
        for sv in last_mv.get("sampledValue", []):
            if sv.get("measurand") == "Energy.Active.Import.Register":
                return sv.get("value")
    return "-"