public static String GetMessageId(this AlarmMessageType alarmMessageType)
{
return(alarmMessageType.GetStringValue());
}
public static S7AlarmMessage TranslateFromMemory(Memory <byte> data, AlarmMessageType subfunction)
{
var span = data.Span;
var current = new S7AlarmMessage();
var offset = 0;
current.Timestamp = GetDt(span.Slice(offset)); offset += 8;
current.FunctionIdentifier = span[offset++];
current.NumberOfMessages = span[offset++];
var alarms = new List <S7PlcAlarmItemDatagram>();
for (var i = 0; i < current.NumberOfMessages; i++)
{
var alarm = new S7PlcAlarmItemDatagram
{
AlarmType = subfunction
};
//var varspec = span[offset];
offset++;
alarm.Length = span[offset++];
if (alarm.Length > 0)
{
var syntaxId = span[offset++];
switch (syntaxId)
{
case (byte)SyntaxIds.AlarmInd:
case (byte)SyntaxIds.AlarmAck:
{
//var numberOfAssociatedValues = span[offset];
offset++;
alarm.MsgNumber = BinaryPrimitives.ReadUInt32BigEndian(span.Slice(offset, 4));
offset += 2; // 2 is correct, we use the offset twice
alarm.Id = BinaryPrimitives.ReadUInt16BigEndian(span.Slice(offset, 2));
offset += 2;
switch (subfunction)
{
case AlarmMessageType.AlarmSQ: // ALARM_SQ
case AlarmMessageType.AlarmS: // ALARM_S
{
alarm.EventState = span[offset++]; // 0x00 == going 0x01 == coming
alarm.State = span[offset++]; // isAck
alarm.AckStateGoing = span[offset++];
alarm.AckStateComing = span[offset++]; // 0x00 == no ack 0x01 == ack
var details = new S7PlcAlarmDetails {
Timestamp = current.Timestamp
};
S7PlcAlarmDetails.ExtractAssotiatedValue(ref span, ref offset, details);
if (alarm.EventState == 0x00)
{
alarm.Going = details;
}
else if (alarm.EventState == 0x01)
{
alarm.Coming = details;
}
}
break;
case AlarmMessageType.AlarmAck: // ALARM ack
{
alarm.AckStateGoing = span[offset++];
alarm.AckStateComing = span[offset++]; // 0x00 == no ack 0x01 == ack
}
break;
default:
{
ThrowHelper.ThrowUnknownAlarmSubfunction(subfunction);
break;
}
}
break;
}
default:
{
ThrowHelper.ThrowUnknownAlarmSyntax(syntaxId);
break;
}
}
}
alarms.Add(alarm);
}
current.Alarms = alarms;
return(current);
}
public static void AddProviderAlarm(AlarmType alarmType, EntityType objectType, AlarmStatusType alarmStatus, AlarmMessageType messageType, Guid objectId, Guid containerId, String providerId)
{
if (String.IsNullOrEmpty(providerId))
{
throw new ArgumentNullException("providerId");
}
providerId = providerId.ToLower();
using (var context = new DataService())
{
var storageAlarm = context.StorageAlarms.GetAll()
.OrderByDescending(sa => sa.AlarmTimeStamp)
.FirstOrDefault(sAlarm => sAlarm.AlarmType == alarmType &&
sAlarm.ObjectType == objectType &&
sAlarm.ObjectId == objectId &&
sAlarm.ProviderId != null &&
sAlarm.ProviderId.ToLower() == providerId);
if (storageAlarm != null && storageAlarm.Status == alarmStatus)
{
return;
}
context.StorageAlarms.Add(new StorageAlarm
{
Id = Guid.NewGuid(),
AlarmType = alarmType,
ObjectType = objectType,
Status = alarmStatus,
AlarmTimeStamp = DateTime.UtcNow,
MessageType = messageType,
ContainerId = containerId,
ObjectId = objectId,
ProviderId = providerId
});
context.Save();
}
}
public static void ThrowUnknownAlarmSubfunction(AlarmMessageType subfunction) => throw new Exception($"Unknown alarm subfunction {subfunction}");
public static void AddAlarm(AlarmType alarmType, EntityType objectType, AlarmStatusType alarmStatus, AlarmMessageType messageType, Guid objectId, Guid containerId)
{
using (var context = new DataService())
{
var storageAlarm = context.StorageAlarms.GetAll()
.OrderByDescending(sa => sa.AlarmTimeStamp)
.FirstOrDefault(
sAlarm =>
sAlarm.AlarmType == alarmType && sAlarm.ObjectType == objectType &&
sAlarm.ObjectId == objectId);
if (storageAlarm != null && storageAlarm.Status == alarmStatus)
{
return;
}
context.StorageAlarms.Add(new StorageAlarm
{
Id = Guid.NewGuid(),
AlarmType = alarmType,
ObjectType = objectType,
Status = alarmStatus,
AlarmTimeStamp = DateTime.UtcNow,
MessageType = messageType,
ContainerId = containerId,
ObjectId = objectId
});
context.Save();
}
}
