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| using Dapper;
using Opc.Ua;
using Opc.Ua.Client;
using Opc.Ua.Configuration;
using System;
using System.Collections.Generic;
using System.Threading.Tasks;
using Microsoft.Data.SqlClient;
using Microsoft.Extensions.Configuration;
using Serilog;
using System.Collections.Concurrent;
IConfiguration configuration = null;
configuration = new ConfigurationBuilder()
.SetBasePath(AppDomain.CurrentDomain.BaseDirectory)
.AddJsonFile("appsettings.json", optional: false, reloadOnChange: true)
.Build();
Log.Logger = new LoggerConfiguration()
.ReadFrom.Configuration(configuration)
.Enrich.FromLogContext()
.CreateLogger();
var application = new ApplicationInstance
{
ApplicationName = "OPC UA Client Demo",
ApplicationType = ApplicationType.Client
};
await application.LoadApplicationConfiguration("Test.Config.xml", false);
application.ApplicationConfiguration.SecurityConfiguration.AutoAcceptUntrustedCertificates = false;
bool haveCert = await application.CheckApplicationInstanceCertificate(false, 0);
if (!haveCert)
{
Console.WriteLine("無法建立憑證，請檢查寫入權限或路徑設定。");
return;
}
Console.WriteLine("憑證已確認或自動生成。");
var opcServerUrl = configuration["OPCServerUrl"];
var endpointURL = opcServerUrl;
var endpoint = CoreClientUtils.SelectEndpoint(endpointURL, false);
var config = EndpointConfiguration.Create(application.ApplicationConfiguration);
var endpointConfig = new ConfiguredEndpoint(null, endpoint, config);
using var session = await Session.Create(
application.ApplicationConfiguration,
endpointConfig,
false,
"MySession",
60000,
null,
null
);
Console.WriteLine("已連線到 OPC UA Server");
NodeId simulationFolderId = null;
ReferenceDescriptionCollection references;
byte[] continuationPoint;
session.Browse(
null,
null,
ObjectIds.ObjectsFolder,
0u,
BrowseDirection.Forward,
ReferenceTypeIds.Organizes,
true,
(uint)NodeClass.Object,
out continuationPoint,
out references
);
foreach (var rd in references)
{
if (rd.DisplayName.Text == "Simulation")
{
simulationFolderId = (NodeId)rd.NodeId;
Console.WriteLine("找到 Simulation Folder: " + simulationFolderId);
break;
}
}
if (simulationFolderId == null)
{
Console.WriteLine("找不到 Simulation Folder");
return;
}
var latestValues = new ConcurrentDictionary<string, object>();
var subscription = new Subscription(session.DefaultSubscription)
{
PublishingInterval = 1000,
PublishingEnabled = true
};
var variableNodes = new List<NodeId>();
FindVariables(session, simulationFolderId, variableNodes);
foreach (var nodeId in variableNodes)
{
var node = session.ReadNode(nodeId);
string displayName = node.DisplayName.Text;
var item = new MonitoredItem(subscription.DefaultItem)
{
StartNodeId = nodeId,
AttributeId = Attributes.Value,
DisplayName = nodeId.Identifier.ToString(),
SamplingInterval = 500
};
item.Notification += (monItem, args) =>
{
foreach (var value in monItem.DequeueValues())
latestValues[displayName] = value.Value;
};
subscription.AddItem(item);
}
session.AddSubscription(subscription);
subscription.Create();
Console.WriteLine("開始監控 Simulation Folder 下所有數值...");
_ = Task.Run(async () =>
{
while (true)
{
await Task.Delay(1000);
if (latestValues.IsEmpty) continue;
var sim = new Simulation
{
Timestamp = DateTime.Now,
Counter = latestValues.ContainsKey("Counter") ? Convert.ToInt32(latestValues["Counter"]) : 0,
Random = latestValues.ContainsKey("Random") ? Convert.ToDouble(latestValues["Random"]) : (double?)null,
Sawtooth = latestValues.ContainsKey("Sawtooth") ? Convert.ToDouble(latestValues["Sawtooth"]) : (double?)null,
Sinusoid = latestValues.ContainsKey("Sinusoid") ? Convert.ToDouble(latestValues["Sinusoid"]) : (double?)null,
Square = latestValues.ContainsKey("Square") ? Convert.ToDouble(latestValues["Square"]) : (double?)null,
Triangle = latestValues.ContainsKey("Triangle") ? Convert.ToDouble(latestValues["Triangle"]) : (double?)null
};
using var connection = new SqlConnection(configuration.GetConnectionString("SimulationDatabase"));
string sql = @"
INSERT INTO Simulation
(Timestamp, Counter, Random, Sawtooth, Sinusoid, Square, Triangle)
VALUES (@Timestamp, @Counter, @Random, @Sawtooth, @Sinusoid, @Square, @Triangle)";
connection.Execute(sql, sim);
Log.Information("寫入資料 {@Simulation}", sim);
}
});
var cts = new CancellationTokenSource();
Console.CancelKeyPress += (s, e) =>
{
e.Cancel = true;
cts.Cancel();
};
try
{
await Task.Delay(-1, cts.Token);
}
catch (TaskCanceledException) { }
Console.WriteLine("程式已結束。");
void FindVariables(Session session, NodeId nodeId, List<NodeId> variableNodes)
{
session.Browse(
null, null, nodeId, 0u,
BrowseDirection.Forward,
ReferenceTypeIds.HierarchicalReferences,
true,
(uint)NodeClass.Object | (uint)NodeClass.Variable,
out byte[] cp,
out ReferenceDescriptionCollection refs
);
foreach (var rd in refs)
{
var childId = (NodeId)rd.NodeId;
if (rd.NodeClass == NodeClass.Variable)
{
variableNodes.Add(childId);
}
else if (rd.NodeClass == NodeClass.Object)
{
FindVariables(session, childId, variableNodes);
}
}
}
|