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nutchayut
2024-05-31 00:38:31 +07:00
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OCPP.Core.Server/ControllerOCPP16.StartTransaction.cs Normal file
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/*
* OCPP.Core - https://github.com/dallmann-consulting/OCPP.Core
* Copyright (C) 2020-2021 dallmann consulting GmbH.
* All Rights Reserved.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <https://www.gnu.org/licenses/>.
*/
using System;
using System.Collections.Generic;
using System.Linq;
using System.Threading.Tasks;
using Microsoft.Extensions.Configuration;
using Microsoft.Extensions.Logging;
using Newtonsoft.Json;
using OCPP.Core.Database;
using OCPP.Core.Server.Messages_OCPP16;
namespace OCPP.Core.Server
{
public partial class ControllerOCPP16
{
public string HandleStartTransaction(OCPPMessage msgIn, OCPPMessage msgOut)
{
string errorCode = null;
StartTransactionResponse startTransactionResponse = new StartTransactionResponse();
int connectorId = -1;
bool denyConcurrentTx = Configuration.GetValue<bool>("DenyConcurrentTx", false);
try
{
Logger.LogTrace("Processing startTransaction request...");
StartTransactionRequest startTransactionRequest = DeserializeMessage<StartTransactionRequest>(msgIn);
Logger.LogTrace("StartTransaction => Message deserialized");
string idTag = CleanChargeTagId(startTransactionRequest.IdTag, Logger);
connectorId = startTransactionRequest.ConnectorId;
startTransactionResponse.IdTagInfo.ParentIdTag = string.Empty;
startTransactionResponse.IdTagInfo.ExpiryDate = MaxExpiryDate;
if (string.IsNullOrWhiteSpace(idTag))
{
// no RFID-Tag => accept request
startTransactionResponse.IdTagInfo.Status = IdTagInfoStatus.Accepted;
Logger.LogInformation("StartTransaction => no charge tag => Status: {0}", startTransactionResponse.IdTagInfo.Status);
}
else
{
try
{
ChargeTag ct = DbContext.Find<ChargeTag>(idTag);
if (ct != null)
{
if (ct.ExpiryDate.HasValue) startTransactionResponse.IdTagInfo.ExpiryDate = ct.ExpiryDate.Value;
startTransactionResponse.IdTagInfo.ParentIdTag = ct.ParentTagId;
if (ct.Blocked.HasValue && ct.Blocked.Value)
{
startTransactionResponse.IdTagInfo.Status = IdTagInfoStatus.Blocked;
}
else if (ct.ExpiryDate.HasValue && ct.ExpiryDate.Value < DateTime.Now)
{
startTransactionResponse.IdTagInfo.Status = IdTagInfoStatus.Expired;
}
else
{
startTransactionResponse.IdTagInfo.Status = IdTagInfoStatus.Accepted;
if (denyConcurrentTx)
{
// Check that no open transaction with this idTag exists
Transaction tx = DbContext.Transactions
.Where(t => !t.StopTime.HasValue && t.StartTagId == idTag)
.OrderByDescending(t => t.TransactionId)
.FirstOrDefault();
if (tx != null)
{
startTransactionResponse.IdTagInfo.Status = IdTagInfoStatus.ConcurrentTx;
}
}
}
}
else
{
startTransactionResponse.IdTagInfo.Status = IdTagInfoStatus.Invalid;
}
Logger.LogInformation("StartTransaction => Charge tag='{0}' => Status: {1}", idTag, startTransactionResponse.IdTagInfo.Status);
}
catch (Exception exp)
{
Logger.LogError(exp, "StartTransaction => Exception reading charge tag ({0}): {1}", idTag, exp.Message);
startTransactionResponse.IdTagInfo.Status = IdTagInfoStatus.Invalid;
}
}
if (connectorId > 0)
{
// Update meter value in db connector status
UpdateConnectorStatus(connectorId, ConnectorStatusEnum.Occupied.ToString(), startTransactionRequest.Timestamp, (double)startTransactionRequest.MeterStart / 1000, startTransactionRequest.Timestamp);
}
if (startTransactionResponse.IdTagInfo.Status == IdTagInfoStatus.Accepted)
{
try
{
Transaction transaction = new Transaction();
transaction.ChargePointId = ChargePointStatus?.Id;
transaction.ConnectorId = startTransactionRequest.ConnectorId;
transaction.StartTagId = idTag;
transaction.StartTime = startTransactionRequest.Timestamp.UtcDateTime;
transaction.MeterStart = (double)startTransactionRequest.MeterStart / 1000; // Meter value here is always Wh
transaction.StartResult = startTransactionResponse.IdTagInfo.Status.ToString();
DbContext.Add<Transaction>(transaction);
DbContext.SaveChanges();
// Return DB-ID as transaction ID
startTransactionResponse.TransactionId = transaction.TransactionId;
}
catch (Exception exp)
{
Logger.LogError(exp, "StartTransaction => Exception writing transaction: chargepoint={0} / tag={1}", ChargePointStatus?.Id, idTag);
errorCode = ErrorCodes.InternalError;
}
}
msgOut.JsonPayload = JsonConvert.SerializeObject(startTransactionResponse);
Logger.LogTrace("StartTransaction => Response serialized");
}
catch (Exception exp)
{
Logger.LogError(exp, "StartTransaction => Exception: {0}", exp.Message);
errorCode = ErrorCodes.FormationViolation;
}
WriteMessageLog(ChargePointStatus?.Id, connectorId, msgIn.Action, startTransactionResponse.IdTagInfo?.Status.ToString(), errorCode);
return errorCode;
}
}
}