internal async Task <object[]> CallMethodAsync(UaItem item, object[] inputArguments)
{
var session = Session;
if (session != null && session.Connected)
{
try
{
var callRequest = new CallRequest {
MethodsToCall = { new CallMethodRequest {
ObjectId = item.StartNodeId, MethodId = item.ResolvedNodeId, InputArguments = inputArguments.Select(a => new Variant(a)).ToArray()
} }
};
var callResponse = await session.CallAsync(callRequest).ConfigureAwait(false);
for (int i = 0; i < callResponse.Results.Count; i++)
{
if (StatusCode.IsNotGood(callResponse.Results[i].StatusCode))
{
Trace.TraceError("Error calling method with MethodId {0} : {1}", callRequest.MethodsToCall[i].MethodId, callResponse.Results[i].StatusCode);
}
}
return(callResponse.Results[0].OutputArguments.Select(a => a.Value).ToArray());
}
catch (Exception ex)
{
Trace.TraceError("Error calling method with MethodId {0} : {1}", item.ResolvedNodeId, ex.Message);
}
}
else
{
Trace.TraceError("Error calling method with MethodId {0} : {1}", item.ResolvedNodeId, "Session is null or not connected");
}
return(null);
}
private static async void SetValueImpl(UaSubscription subscription, UaItem item, object value)
{
// as discovered by rdgerken, Kepware doesn't like getting a WriteValue with a SourceTimeStamp
await subscription.SetValueAsync(item, new DataValue(new Variant(value))).ConfigureAwait(false);
//await subscription.SetValueAsync(item, new DataValue(new Variant(value), StatusCodes.Good, DateTime.UtcNow)).ConfigureAwait(false);
}
internal async Task SetValueAsync(UaItem item, DataValue value)
{
item.CacheValue = value;
NotifyPropertyChanged(item.DisplayName);
var session = Session;
if (session != null && session.Connected)
{
try
{
var writeRequest = new WriteRequest {
NodesToWrite = { new WriteValue {
NodeId = item.ResolvedNodeId, AttributeId = (uint)item.AttributeId, Value = value
} }
};
var writeResponse = await session.WriteAsync(writeRequest).ConfigureAwait(false);
for (int i = 0; i < writeResponse.Results.Count; i++)
{
if (StatusCode.IsNotGood(writeResponse.Results[i]))
{
Trace.TraceError("Error writing value for NodeId {0} : {1}", writeRequest.NodesToWrite[i].NodeId, writeResponse.Results[i]);
}
}
}
catch (Exception ex)
{
Trace.TraceError("Error writing value for NodeId {0} : {1}", item.ResolvedNodeId, ex.Message);
}
}
else
{
Trace.TraceError("Error writing value for NodeId {0} : {1}", item.ResolvedNodeId, "Session is null or not connected");
}
}
public UaSetValueCommand(UaItem item)
{
if (item == null)
{
throw new ArgumentNullException("item");
}
_item = item;
}
internal void RemoveItem(UaItem item)
{
base.RemoveItem(item);
item.PropertyChanged -= OnItemPropertyChanged;
_customType = null;
if (Created)
{
DeleteItems();
}
}
internal void AddItem(UaItem item)
{
base.AddItem(item);
item.PropertyChanged += OnItemPropertyChanged;
_customType = null;
if (Created)
{
CreateItems();
}
}
private static object GetValue(UaSubscription subscription, UaItem item)
{
return(item.CacheQueue);
}
public UaItemDataSourceInfo(UaItem item)
{
_item = item;
}
public UaItemCommandInfo(UaItem item)
{
_item = item;
_command = new UaSetValueCommand(item);
}
public UaItemMethodInfo(UaItem item)
{
_item = item;
}
private static object GetValueImpl(UaSubscription subscription, UaItem item)
{
var dataValue = subscription.GetValue(item);
return(dataValue.StatusCode != StatusCodes.BadWaitingForInitialData ? dataValue.Value : DependencyProperty.UnsetValue);
}
public UaItemPropertyInfo(UaItem item)
{
_item = item;
}
internal DataValue GetValue(UaItem item)
{
return(item.CacheValue);
}