/// <summary>
/// Creates an array of item value result objects from the callback data.
/// </summary>
internal static DaValue[] GetItemValues(
int dwCount,
object[] pvValues,
short[] pwQualities,
System.Runtime.InteropServices.ComTypes.FILETIME[] pftTimeStamps,
int[] pErrors)
{
// contruct the item value results.
DaValue[] values = new DaValue[dwCount];
for (int ii = 0; ii < dwCount; ii++)
{
DaValue value = values[ii] = new DaValue();
value.Error = pErrors[ii];
if (pErrors[ii] >= 0)
{
value.Value = ComUtils.ProcessComValue(pvValues[ii]);
value.Quality = pwQualities[ii];
value.Timestamp = ComUtils.GetDateTime(pftTimeStamps[ii]);
}
}
// return results
return(values);
}
/// <summary>
/// Updates the base event.
/// </summary>
private void UpdateBaseEvent(BaseEventState instance, EventType eventType, ONEVENTSTRUCT e)
{
BinaryEncoder encoder = new BinaryEncoder(ServiceMessageContext.GlobalContext);
encoder.WriteString(null, e.szSource);
encoder.WriteString(null, e.szConditionName);
encoder.WriteInt32(null, e.ftActiveTime.dwHighDateTime);
encoder.WriteInt32(null, e.ftActiveTime.dwLowDateTime);
encoder.WriteInt32(null, e.dwCookie);
byte[] eventId = encoder.CloseAndReturnBuffer();
NodeId eventTypeId = AeParsedNodeId.Construct(e.dwEventType, e.dwEventCategory, e.szConditionName, m_namespaceIndex);
NodeId sourceNode = AeModelUtils.ConstructIdForSource(e.szSource, null, m_namespaceIndex);
string sourceName = e.szSource;
DateTime time = ComUtils.GetDateTime(e.ftTime);
DateTime receiveTime = DateTime.UtcNow;
LocalizedText message = e.szMessage;
ushort severity = (ushort)e.dwSeverity;
instance.TypeDefinitionId = eventTypeId;
instance.SetChildValue(m_defaultContext, Opc.Ua.BrowseNames.EventId, eventId, false);
instance.SetChildValue(m_defaultContext, Opc.Ua.BrowseNames.EventType, eventTypeId, false);
instance.SetChildValue(m_defaultContext, Opc.Ua.BrowseNames.SourceNode, sourceNode, false);
instance.SetChildValue(m_defaultContext, Opc.Ua.BrowseNames.SourceName, sourceName, false);
instance.SetChildValue(m_defaultContext, Opc.Ua.BrowseNames.Time, time, false);
instance.SetChildValue(m_defaultContext, Opc.Ua.BrowseNames.ReceiveTime, receiveTime, false);
instance.SetChildValue(m_defaultContext, Opc.Ua.BrowseNames.Message, message, false);
instance.SetChildValue(m_defaultContext, Opc.Ua.BrowseNames.Severity, severity, false);
}
/// <summary>
/// Updates the status node.
/// </summary>
protected override bool UpdateStatus()
{
// get the status from the server.
ComDaClient client = DefaultClient;
OPCSERVERSTATUS?status = client.GetStatus();
// check the client has been abandoned.
if (!Object.ReferenceEquals(client, DefaultClient))
{
return(false);
}
// update the server status.
lock (StatusNodeLock)
{
if (status != null)
{
StatusNode.SetStatusCode(DefaultSystemContext, StatusCodes.Good, DateTime.UtcNow);
StatusNode.ServerState.Value = Utils.Format("{0}", status.Value.dwServerState);
StatusNode.CurrentTime.Value = ComUtils.GetDateTime(status.Value.ftCurrentTime);
StatusNode.LastUpdateTime.Value = ComUtils.GetDateTime(status.Value.ftLastUpdateTime);
StatusNode.StartTime.Value = ComUtils.GetDateTime(status.Value.ftStartTime);
StatusNode.VendorInfo.Value = status.Value.szVendorInfo;
StatusNode.SoftwareVersion.Value = Utils.Format("{0}.{1}.{2}", status.Value.wMajorVersion, status.Value.wMinorVersion, status.Value.wBuildNumber);
}
else
{
StatusNode.SetStatusCode(DefaultSystemContext, StatusCodes.BadOutOfService, DateTime.UtcNow);
}
StatusNode.ClearChangeMasks(DefaultSystemContext, true);
return(status != null);
}
}
public void OnReadComplete(int dwTransid, int hGroup, int hrMasterquality, int hrMastererror, int dwCount, int[] phClientItems, object[] pvValues, short[] pwQualities, System.Runtime.InteropServices.ComTypes.FILETIME[] pftTimeStamps, int[] pErrors)
{
var items = new OpcItemState[dwCount];
for (int i = 0; i < dwCount; i++)
{
var item = new OpcItemState();
item.ClientHandle = phClientItems[i];
item.DataValue = pvValues[i];
item.ErrorCode = pErrors[i];
item.Quality = pwQualities[i];
item.Timestamp = ComUtils.GetDateTime(pftTimeStamps[i]);
items[i] = item;
}
_group.OnReadComplete(new ReadCompleteEventArgs(dwTransid, hGroup, hrMasterquality, hrMastererror, items));
}
public OpcItemState[] Read(OpcDataSource source, int[] serverHandles)
{
var ppItemValues = IntPtr.Zero;
var ppErrors = IntPtr.Zero;
SyncIO.Read((OPCDATASOURCE)source, serverHandles.Length, serverHandles, out ppItemValues, out ppErrors);
var errors = ComUtils.GetInt32s(ref ppErrors, serverHandles.Length, true);
var values = GetStructures <OPCITEMSTATE>(ppItemValues, serverHandles.Length)
.Zip(errors, (v, e) => new OpcItemState
{
ClientHandle = v.hClient,
DataValue = v.vDataValue,
ErrorCode = e,
Quality = v.wQuality,
Timestamp = ComUtils.GetDateTime(v.ftTimeStamp)
})
.ToArray();
return(values);
}
/// <summary>
/// Unmarshals and deallocates a OPCITEMSTATE structures.
/// </summary>
internal static DaValue[] GetItemValues(ref IntPtr pInput, int count, bool deallocate)
{
DaValue[] output = null;
if (pInput != IntPtr.Zero && count > 0)
{
output = new DaValue[count];
IntPtr pos = pInput;
for (int ii = 0; ii < count; ii++)
{
OpcRcw.Da.OPCITEMSTATE result = (OpcRcw.Da.OPCITEMSTATE)Marshal.PtrToStructure(pos, typeof(OpcRcw.Da.OPCITEMSTATE));
DaValue value = new DaValue();
value.Value = ComUtils.ProcessComValue(result.vDataValue);
value.Quality = result.wQuality;
value.Timestamp = ComUtils.GetDateTime(result.ftTimeStamp);
output[ii] = value;
if (deallocate)
{
Marshal.DestroyStructure(pos, typeof(OpcRcw.Da.OPCITEMSTATE));
}
pos = (IntPtr)(pos.ToInt32() + Marshal.SizeOf(typeof(OpcRcw.Da.OPCITEMSTATE)));
}
if (deallocate)
{
Marshal.FreeCoTaskMem(pInput);
pInput = IntPtr.Zero;
}
}
return(output);
}
public OpcServerStatus GetStatus()
{
var ppStatus = IntPtr.Zero;
_server.GetStatus(out ppStatus);
var status = Marshal.PtrToStructure <OPCSERVERSTATUS>(ppStatus);
Marshal.DestroyStructure <OPCSERVERSTATUS>(ppStatus);
Marshal.FreeCoTaskMem(ppStatus);
return(new OpcServerStatus
{
BandWidth = status.dwBandWidth,
BuildNumber = status.wBuildNumber,
CurrentTime = ComUtils.GetDateTime(status.ftCurrentTime),
GroupCount = status.dwGroupCount,
LastUpdateTime = ComUtils.GetDateTime(status.ftLastUpdateTime),
MajorVersion = status.wMajorVersion,
MinorVersion = status.wMinorVersion,
ServerState = (OpcServerState)status.dwServerState,
StartTime = ComUtils.GetDateTime(status.ftStartTime),
VendorInfo = status.szVendorInfo
});
}
/// <summary>
/// Updates the condition event.
/// </summary>
private void UpdateAlarm(AlarmConditionState instance, EventType eventType, ONEVENTSTRUCT e)
{
instance.NodeId = AeParsedNodeId.ConstructIdForCondition(e.szSource, e.dwEventCategory, e.szConditionName, m_namespaceIndex);
// find the condition class.
NodeId classId = AeParsedNodeId.Construct(e.dwEventType, e.dwEventCategory, null, m_namespaceIndex);
AeEventTypeState conditionClassType = m_cache.FindType(m_defaultContext, classId);
if (conditionClassType != null)
{
instance.SetChildValue(m_defaultContext, Opc.Ua.BrowseNames.ConditionClassId, classId, false);
instance.SetChildValue(m_defaultContext, Opc.Ua.BrowseNames.ConditionClassName, conditionClassType.EventType.Description, false);
}
else
{
instance.SetChildValue(m_defaultContext, Opc.Ua.BrowseNames.ConditionClassId, Opc.Ua.ObjectTypeIds.BaseConditionClassType, false);
instance.SetChildValue(m_defaultContext, Opc.Ua.BrowseNames.ConditionClassName, "BaseConditionClass", false);
}
instance.SetChildValue(m_defaultContext, Opc.Ua.BrowseNames.ConditionName, e.szConditionName, false);;
instance.SetChildValue(m_defaultContext, Opc.Ua.BrowseNames.ClientUserId, e.szActorID, false);
instance.SetChildValue(m_defaultContext, Opc.Ua.BrowseNames.Quality, ComUtils.GetQualityCode(e.wQuality), false);
bool acknowledged = (e.wNewState & Constants.CONDITION_ACKED) != 0;
bool active = (e.wNewState & Constants.CONDITION_ACTIVE) != 0;
bool enabled = (e.wNewState & Constants.CONDITION_ENABLED) != 0;
bool retain = enabled & (active || !acknowledged);
LocalizedText effectiveDisplayName = ConditionStateNames.Inactive;
if (!enabled)
{
effectiveDisplayName = ConditionStateNames.Disabled;
}
else if (!acknowledged)
{
effectiveDisplayName = ConditionStateNames.Unacknowledged;
}
else if (active)
{
effectiveDisplayName = ConditionStateNames.Active;
}
instance.SetChildValue(m_defaultContext, Opc.Ua.BrowseNames.Retain, true, false);
instance.EnabledState = new TwoStateVariableState(instance);
instance.EnabledState.BrowseName = Opc.Ua.BrowseNames.EnabledState;
instance.EnabledState.Value = new LocalizedText((enabled) ? ConditionStateNames.Enabled : ConditionStateNames.Disabled);
instance.EnabledState.SetChildValue(m_defaultContext, Opc.Ua.BrowseNames.Id, enabled, false);
instance.EnabledState.SetChildValue(m_defaultContext, Opc.Ua.BrowseNames.EffectiveDisplayName, effectiveDisplayName, false);
instance.AckedState = new TwoStateVariableState(instance);
instance.AckedState.BrowseName = Opc.Ua.BrowseNames.AckedState;
instance.AckedState.Value = new LocalizedText((acknowledged) ? ConditionStateNames.Acknowledged : ConditionStateNames.Unacknowledged);
instance.AckedState.SetChildValue(m_defaultContext, Opc.Ua.BrowseNames.Id, acknowledged, false);
instance.ActiveState = new TwoStateVariableState(instance);
instance.ActiveState.BrowseName = Opc.Ua.BrowseNames.ActiveState;
instance.ActiveState.Value = new LocalizedText((active) ? ConditionStateNames.Active : ConditionStateNames.Inactive);
instance.ActiveState.SetChildValue(m_defaultContext, Opc.Ua.BrowseNames.Id, active, false);
instance.ActiveState.SetChildValue(m_defaultContext, Opc.Ua.BrowseNames.TransitionTime, ComUtils.GetDateTime(e.ftActiveTime), false);
if (!String.IsNullOrEmpty(e.szSubconditionName))
{
instance.ActiveState.SetChildValue(m_defaultContext, Opc.Ua.BrowseNames.EffectiveDisplayName, e.szSubconditionName, false);
}
}
