public cacheDBTest()
{
string json_config = @"{
nodesDatabase:{
isInMemory:true, filename:'pollo.dat', juno:'bul'
},
nodesLoader:{
filename:'nodeset.xml'
}
}";
j = JObject.Parse(json_config);
cDB = new cacheDB(j);
Opc.Ua.NamespaceTable nt = new Opc.Ua.NamespaceTable();
nt.Append("http://www.siemens.com/simatic-s7-opcua");
UANodeConverter ua = new UANodeConverter(j, nt);
ua.fillCacheDB(cDB);
}
/// <summary>
/// Updates the namespace table with URI used in the relative path.
/// </summary>
/// <param name="currentTable">The current table.</param>
/// <param name="targetTable">The target table.</param>
public void UpdateNamespaceTable(NamespaceTable currentTable, NamespaceTable targetTable)
{
// build mapping table.
int[] mappings = new int[currentTable.Count];
mappings[0] = 0;
if (mappings.Length > 0)
{
mappings[1] = 1;
}
// ensure a placeholder for the local namespace.
if (targetTable.Count <= 1)
{
targetTable.Append("---");
}
string[] uris = new string[mappings.Length];
for (int ii = 2; ii < mappings.Length; ii++)
{
uris[ii] = currentTable.GetString((uint)ii);
if (uris[ii] != null)
{
mappings[ii] = targetTable.GetIndex(uris[ii]);
}
}
// update each element.
foreach (Element element in m_elements)
{
// check reference type name.
QualifiedName qname = element.ReferenceTypeName;
if (qname != null && qname.NamespaceIndex > 1)
{
if (qname.NamespaceIndex < mappings.Length)
{
if (mappings[qname.NamespaceIndex] == -1)
{
mappings[qname.NamespaceIndex] = targetTable.GetIndexOrAppend(uris[qname.NamespaceIndex]);
}
}
}
// check target name.
qname = element.TargetName;
if (qname != null && qname.NamespaceIndex > 1)
{
if (qname.NamespaceIndex < mappings.Length)
{
if (mappings[qname.NamespaceIndex] == -1)
{
mappings[qname.NamespaceIndex] = targetTable.GetIndexOrAppend(uris[qname.NamespaceIndex]);
}
}
}
}
}
/// <summary>
/// Returns a namespace table with all of the URIs defined.
/// </summary>
/// <remarks>
/// This table is was used to create any relative paths in the model design.
/// </remarks>
public static NamespaceTable GetNamespaceTable()
{
FieldInfo[] fields = typeof(Namespaces).GetFields(BindingFlags.Public | BindingFlags.Static);
NamespaceTable namespaceTable = new NamespaceTable();
foreach (FieldInfo field in fields)
{
string namespaceUri = (string)field.GetValue(typeof(Namespaces));
if (namespaceTable.GetIndex(namespaceUri) == -1)
{
namespaceTable.Append(namespaceUri);
}
}
return namespaceTable;
}
/// <summary>
/// Updates the namespace table with URI used in the relative path.
/// </summary>
/// <param name="currentTable">The current table.</param>
/// <param name="targetTable">The target table.</param>
public void UpdateNamespaceTable(NamespaceTable currentTable, NamespaceTable targetTable)
{
// build mapping table.
int[] mappings = new int[currentTable.Count];
mappings[0] = 0;
if (mappings.Length > 0)
{
mappings[1] = 1;
}
// ensure a placeholder for the local namespace.
if (targetTable.Count <= 1)
{
targetTable.Append("---");
}
string[] uris = new string[mappings.Length];
for (int ii = 2; ii < mappings.Length; ii++)
{
uris[ii] = currentTable.GetString((uint)ii);
if (uris[ii] != null)
{
mappings[ii] = targetTable.GetIndex(uris[ii]);
}
}
// update each element.
foreach (Element element in m_elements)
{
// check reference type name.
QualifiedName qname = element.ReferenceTypeName;
if (qname != null && qname.NamespaceIndex > 1)
{
if (qname.NamespaceIndex < mappings.Length)
{
if (mappings[qname.NamespaceIndex] == -1)
{
mappings[qname.NamespaceIndex] = targetTable.GetIndexOrAppend(uris[qname.NamespaceIndex]);
}
}
}
// check target name.
qname = element.TargetName;
if (qname != null && qname.NamespaceIndex > 1)
{
if (qname.NamespaceIndex < mappings.Length)
{
if (mappings[qname.NamespaceIndex] == -1)
{
mappings[qname.NamespaceIndex] = targetTable.GetIndexOrAppend(uris[qname.NamespaceIndex]);
}
}
}
}
}
/// <summary>
/// Updates the nodeset string tables and returns a NodeId that references those tables.
/// </summary>
/// <param name="nodeId">The node identifier.</param>
/// <param name="targetNamespaceUris">The target namespace URIs.</param>
/// <param name="targetServerUris">The target server URIs.</param>
/// <param name="sourceNamespaceUris">The source namespace URIs.</param>
/// <param name="sourceServerUris">The source server URIs.</param>
/// <returns>A NodeId that references those tables.</returns>
private static ExpandedNodeId Translate(
ExpandedNodeId nodeId,
NamespaceTable targetNamespaceUris,
StringTable targetServerUris,
NamespaceTable sourceNamespaceUris,
StringTable sourceServerUris)
{
if (targetNamespaceUris == null)
{
throw new ArgumentNullException("targetNamespaceUris");
}
if (sourceNamespaceUris == null)
{
throw new ArgumentNullException("sourceNamespaceUris");
}
if (nodeId.ServerIndex > 0)
{
if (targetServerUris == null)
{
throw new ArgumentNullException("targetServerUris");
}
if (sourceServerUris == null)
{
throw new ArgumentNullException("sourceServerUris");
}
}
if (NodeId.IsNull(nodeId))
{
return(nodeId);
}
if (!nodeId.IsAbsolute)
{
return(Translate((NodeId)nodeId, targetNamespaceUris, sourceNamespaceUris));
}
string namespaceUri = nodeId.NamespaceUri;
if (nodeId.ServerIndex > 0)
{
if (String.IsNullOrEmpty(namespaceUri))
{
namespaceUri = sourceNamespaceUris.GetString(nodeId.NamespaceIndex);
}
string serverUri = sourceServerUris.GetString(nodeId.ServerIndex);
int index = targetServerUris.GetIndex(serverUri);
if (index == -1)
{
index = targetServerUris.Append(serverUri);
}
return(new ExpandedNodeId(new NodeId(nodeId.Identifier, 0), namespaceUri, (uint)index));
}
ushort namespaceIndex = 0;
if (!String.IsNullOrEmpty(namespaceUri))
{
int index = targetNamespaceUris.GetIndex(namespaceUri);
if (index == -1)
{
index = targetNamespaceUris.Append(namespaceUri);
}
namespaceIndex = (ushort)index;
}
return(new NodeId(nodeId.Identifier, namespaceIndex));
}
/// <summary>
/// Creates an decoder to restore Variant values.
/// </summary>
private XmlDecoder CreateDecoder(ISystemContext context, XmlElement source)
{
ServiceMessageContext messageContext = new ServiceMessageContext();
messageContext.NamespaceUris = context.NamespaceUris;
messageContext.ServerUris = context.ServerUris;
messageContext.Factory = context.EncodeableFactory;
XmlDecoder decoder = new XmlDecoder(source, messageContext);
NamespaceTable namespaceUris = new NamespaceTable();
if (NamespaceUris != null)
{
for (int ii = 0; ii < NamespaceUris.Length; ii++)
{
namespaceUris.Append(NamespaceUris[ii]);
}
}
StringTable serverUris = new StringTable();
if (ServerUris != null)
{
serverUris.Append(context.ServerUris.GetString(0));
for (int ii = 0; ii < ServerUris.Length; ii++)
{
serverUris.Append(ServerUris[ii]);
}
}
decoder.SetMappingTables(namespaceUris, serverUris);
return decoder;
}
/// <summary>
/// Updates the application after connecting to or disconnecting from the server.
/// </summary>
private void Server_ConnectComplete(object sender, EventArgs e)
{
try
{
m_session = ConnectServerCTRL.Session;
if (m_session == null)
{
StartBTN.Enabled = false;
return;
}
// set a suitable initial state.
if (m_session != null && !m_connectedOnce)
{
m_connectedOnce = true;
}
// this client has built-in knowledge of the information model used by the server.
NamespaceTable wellKnownNamespaceUris = new NamespaceTable();
wellKnownNamespaceUris.Append(Namespaces.Methods);
string[] browsePaths = new string[]
{
"1:My Process/1:State",
"1:My Process",
"1:My Process/1:Start"
};
List<NodeId> nodes = ClientUtils.TranslateBrowsePaths(
m_session,
ObjectIds.ObjectsFolder,
wellKnownNamespaceUris,
browsePaths);
// subscribe to the state if available.
if (nodes.Count > 0 && !NodeId.IsNull(nodes[0]))
{
m_subscription = new Subscription();
m_subscription.PublishingEnabled = true;
m_subscription.PublishingInterval = 1000;
m_subscription.Priority = 1;
m_subscription.KeepAliveCount = 10;
m_subscription.LifetimeCount = 20;
m_subscription.MaxNotificationsPerPublish = 1000;
m_session.AddSubscription(m_subscription);
m_subscription.Create();
MonitoredItem monitoredItem = new MonitoredItem();
monitoredItem.StartNodeId = nodes[0];
monitoredItem.AttributeId = Attributes.Value;
monitoredItem.Notification += new MonitoredItemNotificationEventHandler(MonitoredItem_Notification);
m_subscription.AddItem(monitoredItem);
m_subscription.ApplyChanges();
}
// save the object/method
if (nodes.Count > 2)
{
m_objectNode = nodes[1];
m_methodNode = nodes[2];
}
InitialStateTB.Text = "1";
FinalStateTB.Text = "100";
StartBTN.Enabled = true;
}
catch (Exception exception)
{
ClientUtils.HandleException(this.Text, exception);
}
}
private void BoilerCB_SelectedIndexChanged(object sender, EventArgs e)
{
try
{
if (m_session == null)
{
return;
}
if (m_subscription != null)
{
m_session.RemoveSubscription(m_subscription);
m_subscription = null;
}
ReferenceDescription boiler = (ReferenceDescription)BoilerCB.SelectedItem;
if (boiler == null)
{
return;
}
m_subscription = new Subscription();
m_subscription.PublishingEnabled = true;
m_subscription.PublishingInterval = 1000;
m_subscription.Priority = 1;
m_subscription.KeepAliveCount = 10;
m_subscription.LifetimeCount = 20;
m_subscription.MaxNotificationsPerPublish = 1000;
m_session.AddSubscription(m_subscription);
m_subscription.Create();
NamespaceTable wellKnownNamespaceUris = new NamespaceTable();
wellKnownNamespaceUris.Append(Namespaces.Boiler);
string[] browsePaths = new string[]
{
"1:PipeX001/1:FTX001/1:Output",
"1:DrumX001/1:LIX001/1:Output",
"1:PipeX002/1:FTX002/1:Output",
"1:LCX001/1:SetPoint",
};
List<NodeId> nodes = ClientUtils.TranslateBrowsePaths(
m_session,
(NodeId)boiler.NodeId,
wellKnownNamespaceUris,
browsePaths);
Control[] controls = new Control[]
{
InputPipeFlowTB,
DrumLevelTB,
OutputPipeFlowTB,
DrumLevelSetPointTB
};
for (int ii = 0; ii < nodes.Count; ii++)
{
controls[ii].Text = "---";
if (nodes[ii] != null)
{
MonitoredItem monitoredItem = new MonitoredItem();
monitoredItem.StartNodeId = nodes[ii];
monitoredItem.AttributeId = Attributes.Value;
monitoredItem.Handle = controls[ii];
monitoredItem.Notification += new MonitoredItemNotificationEventHandler(MonitoredItem_Notification);
m_subscription.AddItem(monitoredItem);
}
}
m_subscription.ApplyChanges();
}
catch (Exception exception)
{
ClientUtils.HandleException(this.Text, exception);
}
}
/// <summary>
/// Connects to a server.
/// </summary>
private void Server_ConnectMI_Click(object sender, EventArgs e)
{
try
{
// disconnect any existing session.
Server_DisconnectMI_Click(sender, e);
InitialStateTB.Text = "1";
FinalStateTB.Text = "100";
// create the session.
EndpointDescription endpointDescription = SelectEndpoint();
EndpointConfiguration endpointConfiguration = EndpointConfiguration.Create(m_configuration);
ConfiguredEndpoint endpoint = new ConfiguredEndpoint(null, endpointDescription, endpointConfiguration);
m_session = Session.Create(
m_configuration,
endpoint,
true,
m_configuration.ApplicationName,
60000,
null,
null);
// set up keep alive callback.
m_session.KeepAliveInterval = 2000;
m_session.KeepAlive += new KeepAliveEventHandler(Session_KeepAlive);
// this client has built-in knowledge of the information model used by the server.
NamespaceTable wellKnownNamespaceUris = new NamespaceTable();
wellKnownNamespaceUris.Append(Namespaces.Methods);
string[] browsePaths = new string[]
{
"1:My Process/1:State",
"1:My Process",
"1:My Process/1:Start"
};
List<NodeId> nodes = FormUtils.TranslateBrowsePaths(
m_session,
ObjectIds.ObjectsFolder,
wellKnownNamespaceUris,
browsePaths);
// subscribe to the state if available.
if (nodes.Count > 0 && !NodeId.IsNull(nodes[0]))
{
m_subscription = new Subscription();
m_subscription.PublishingEnabled = true;
m_subscription.PublishingInterval = 1000;
m_subscription.Priority = 1;
m_subscription.KeepAliveCount = 10;
m_subscription.LifetimeCount = 20;
m_subscription.MaxNotificationsPerPublish = 1000;
m_session.AddSubscription(m_subscription);
m_subscription.Create();
MonitoredItem monitoredItem = new MonitoredItem();
monitoredItem.StartNodeId = nodes[0];
monitoredItem.AttributeId = Attributes.Value;
monitoredItem.Notification += new MonitoredItemNotificationEventHandler(MonitoredItem_Notification);
m_subscription.AddItem(monitoredItem);
m_subscription.ApplyChanges();
}
// save the object/method
if (nodes.Count > 2)
{
m_objectNode = nodes[1];
m_methodNode = nodes[2];
}
ConnectedLB.Text = "Connected";
ServerUrlLB.Text = endpointDescription.EndpointUrl;
LastKeepAliveTimeLB.Text = "---";
}
catch (Exception exception)
{
MessageBox.Show(exception.Message, this.Text, MessageBoxButtons.OK, MessageBoxIcon.Error);
}
}
