public Variant ReadVariable(RemoteVariable remoteVariable)
{
if (string.IsNullOrWhiteSpace(remoteVariable.Name))
{
throw new Exception("Method name is empty!");
}
if (_parentNode == null)
{
throw new Exception($"Parent node is null for method '{remoteVariable.Name}'!");
}
var readValue = new ReadValueId
{
NodeId = BrowseNodeId(_parentNode, remoteVariable.Name),
AttributeId = Attributes.Value
};
var result = _session.Read(new List <ReadValueId> {
readValue
}, 0, TimestampsToReturn.Both,
new RequestSettings {
OperationTimeout = 10000
});
if (result == null || result.Count < 1)
{
throw new Exception($"Cannot read UA Variable {_parentNode.Identifier}.{remoteVariable.Name} on server.");
}
return(result[0].WrappedValue);
}
public void Write(string name, object parameter)
{
try
{
var variable = new RemoteVariable
{
Name = name,
Value = TypeMapping.ToVariant(parameter)
};
variable.Write(this);
}
catch (Exception e)
{
ExceptionHandler.Log(e, $"Cannot write {Name}.{name} without errors!");
}
}
public T Read <T>(string name)
{
try
{
var variable = new RemoteVariable
{
Name = name,
Value = TypeMapping.MapType <T>()
};
var result = variable.Read(this);
return((T)TypeMapping.ToObject(result));
}
catch (Exception e)
{
ExceptionHandler.Log(e, $"Cannot read {Name}.{name} without errors!");
}
return((T)TypeMapping.ToObject(TypeMapping.MapType <T>()));
}
public Variant WriteVariable(RemoteVariable remoteVariable)
{
if (string.IsNullOrWhiteSpace(remoteVariable.Name))
{
throw new Exception("Method name is empty!");
}
if (_parentNode == null)
{
throw new Exception($"Parent node is null for method '{remoteVariable.Name}'!");
}
var writeValue = new WriteValue
{
NodeId = BrowseNodeId(_parentNode, remoteVariable.Name),
AttributeId = Attributes.Value,
Value = new DataValue()
{
WrappedValue = remoteVariable.Value
}
};
var result = _session.Write(new List <WriteValue> {
writeValue
},
new RequestSettings {
OperationTimeout = 10000
});
if (result == null || result.Count < 1 || result[0] != StatusCodes.Good)
{
throw new Exception(
$"Cannot write UA Variable {_parentNode.Identifier}.{remoteVariable.Name} on server.");
}
return(remoteVariable.Value);
}
