/// <summary>Process Service Notification.</summary>
/// <param name="systemId">system id.</param>
/// <param name="isSystemOnline">is system online.</param>
/// <param name="subscriptionId">service subscription id.</param>
/// <param name="serviceList">list of services.</param>
public void OnServiceNotification(string systemId, bool isSystemOnline, int subscriptionId, serviceStruct[] serviceList)
{
lock (_lock)
{
// This notification is sent by T2G for a single subscription, i.e. for a specific service ID. The list is not the
// complete list of services on a train, it is a list of services with the same service ID. T2G supports multiple
// services with the same ID present on a train, but PIS ground uses only those services that can only have one
// instance on a given train.
if (!string.IsNullOrEmpty(systemId))
{
ServiceInfoList services = T2GDataConverter.BuildServiceList(serviceList);
if (services != null)
{
_localDataStorage.OnServiceChanged(systemId, isSystemOnline, subscriptionId, services);
ElementEventArgs elementEventArgs = _localDataStorage.BuildElementInfoChangedEvent(systemId);
if (elementEventArgs != null)
{
_notifierTarget.RaiseOnElementInfoChangeEvent(elementEventArgs);
}
}
}
}
}
/// <summary>
/// 查询获取服务信息数据到本地
/// </summary>
/// <returns></returns>
public List <ServiceInfo> GetDataList()
{
if (ServiceInfoList != null && ServiceInfoList.Any())
{
return(ServiceInfoList);
}
ServiceInfoList = serviceInfoDataProvider.GetData(1);
return(ServiceInfoList);
}
/// <summary>To Get the Service Information.</summary>
/// <param name="strSystemId">System Id.</param>
/// <returns>ServiceInfo Data.</returns>
internal ServiceInfoList GetAvailableServiceData(string systemId)
{
ServiceInfoList serviceList = null;
if (!string.IsNullOrEmpty(systemId))
{
lock (_systemListLock)
{
SystemInfo system;
if (_systemList.TryGetValue(systemId, out system))
{
// Copy immutable list ref is ok, keep same references
serviceList = system.ServiceList;
}
}
}
return(serviceList ?? ServiceInfoList.Empty);
}
/// <summary>Executes the service changed action.</summary>
/// <param name="systemId">System id.</param>
/// <param name="isSystemOnline">True if this object is system online.</param>
/// <param name="subscriptionId">Identifier for the subscription.</param>
/// <param name="services">Services that changed.</param>
/// <returns>true if internal data changed, false otherwise.</returns>
internal bool OnServiceChanged(string systemId, bool isSystemOnline, int subscriptionId, ServiceInfoList services)
{
bool updated = false;
if (!string.IsNullOrEmpty(systemId) && services != null)
{
if (LogManager.IsTraceActive(TraceType.INFO))
{
string message = String.Format(
"OnServiceChanged called, systemId={0}, isSystemOnline={1}, subscriptionId={2}, service={3}",
systemId, isSystemOnline, subscriptionId, services.Count != 0 ? services[0].ServiceName : "N/A");
LogManager.WriteLog(TraceType.INFO, message, "Ground.Core.T2G.T2GNotificationProcessor.OnServiceNotification", null, EventIdEnum.GroundCore);
}
bool systemExists;
lock (_systemListLock)
{
SystemInfo foundSystem;
systemExists = _systemList.TryGetValue(systemId, out foundSystem);
if (systemExists)
{
if (foundSystem.IsOnline != isSystemOnline)
{
// This info is mainly updated in GetSystemList (initially) or OnSystemChanged (after), but
// we might as well update it here, since it is returned along with the service list.
SystemInfo updatedSystemInfo = new SystemInfo(
foundSystem.SystemId,
foundSystem.MissionId,
foundSystem.VehiclePhysicalId,
foundSystem.Status,
isSystemOnline,
foundSystem.CommunicationLink,
foundSystem.ServiceList,
foundSystem.PisBaseline,
foundSystem.PisVersion,
foundSystem.PisMission,
foundSystem.IsPisBaselineUpToDate && isSystemOnline);
_systemList[foundSystem.SystemId] = updatedSystemInfo;
updated = true;
}
}
}
if (systemExists)
{
updated |= UpdateServiceList(systemId, subscriptionId, services);
}
}
DumpCurrentSystemList(TraceType.DEBUG, "After OnServiceListChanged called:", "PIS.Ground.Core.T2G.LocalDataStorage.OnServiceListChanged");
return(updated);
}
/// <summary>
/// Update service list
/// </summary>
/// <param name="systemId">Identifier for the system.</param>
/// <param name="subscriptionId">Notification subscription identifier</param>
/// <param name="updatedServices">The updated services.</param>
/// <returns>true if the system has been updated, false otherwise.</returns>
private bool UpdateServiceList(string systemId, int subscriptionId, ServiceInfoList updatedServices)
{
bool listUpdated = false;
if (LogManager.IsTraceActive(TraceType.INFO))
{
string context = string.Format(CultureInfo.CurrentCulture, "{0} of service {1}", "PIS.Ground.Core.T2G.LocalDataStorage.UpdateServiceList", ServiceConfiguration.RunningServiceName);
LogManager.WriteLog(TraceType.INFO, "Updating service list for systemId=" + systemId, context, null, EventIdEnum.GroundCore);
}
try
{
ushort subscriptionServiceId = 0;
lock (_subscriptionAssociationsLock)
{
if (!_associationSubscriptionIdWithServiceId.TryGetValue(subscriptionId, out subscriptionServiceId) && updatedServices.Count != 0)
{
_associationSubscriptionIdWithServiceId[subscriptionId] = updatedServices[0].ServiceId;
}
}
lock (_systemListLock)
{
SystemInfo existingSystemInfo;
// System is know. Update possible.
if (_systemList.TryGetValue(systemId, out existingSystemInfo))
{
List <ServiceInfo> updatedList = null;
// If the array is empty, this mean that we shall remove all services. Later, T2G will send an update.
if (updatedServices.Count == 0)
{
// If serviceId is 0, this means that no mapping existing between the subscription id and the service id.
if (subscriptionServiceId != 0)
{
updatedList = existingSystemInfo.ServiceList.Where(s => s.ServiceId != subscriptionServiceId).ToList();
listUpdated = updatedList.Count != existingSystemInfo.ServiceList.Count;
}
}
else
{
updatedList = new List <ServiceInfo>(existingSystemInfo.ServiceList);
foreach (ServiceInfo service in updatedServices)
{
if (_filterLocalServiceOnly)
{
if (service.VehiclePhysicalId != existingSystemInfo.VehiclePhysicalId)
{
continue;
}
}
int insertIndex = updatedList.FindIndex(i => i.VehiclePhysicalId == service.VehiclePhysicalId &&
i.ServiceId == service.ServiceId &&
i.ServicePortNumber == service.ServicePortNumber &&
i.ServiceIPAddress == service.ServiceIPAddress);
if (insertIndex < 0)
{
updatedList.Add(service);
listUpdated = true;
}
else if (!service.Equals(updatedList[insertIndex]))
{
updatedList[insertIndex] = service;
listUpdated = true;
}
}
if (listUpdated)
{
// Service list shall be sorted
System.Comparison <ServiceInfo> comparer = (ServiceInfo x, ServiceInfo y) => CompareServiceInfo(x, y, existingSystemInfo.VehiclePhysicalId);
updatedList.Sort(comparer);
}
}
if (listUpdated)
{
// Add updated info
SystemInfo updatedSystemInfo = new SystemInfo(
existingSystemInfo.SystemId,
existingSystemInfo.MissionId,
existingSystemInfo.VehiclePhysicalId,
existingSystemInfo.Status,
existingSystemInfo.IsOnline,
existingSystemInfo.CommunicationLink,
new ServiceInfoList(updatedList),
existingSystemInfo.PisBaseline,
existingSystemInfo.PisVersion,
existingSystemInfo.PisMission,
existingSystemInfo.IsPisBaselineUpToDate && existingSystemInfo.IsOnline);
_systemList[existingSystemInfo.SystemId] = updatedSystemInfo;
}
}
}
}
catch (Exception ex)
{
string context = string.Format(CultureInfo.CurrentCulture, "{0} of service {1}", "PIS.Ground.Core.T2G.LocalDataStorage.UpdateServiceList", ServiceConfiguration.RunningServiceName);
LogManager.WriteLog(TraceType.ERROR, ex.Message, context, ex, EventIdEnum.GroundCore);
}
return(listUpdated);
}
