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完成连接OpcUa服务器

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This commit is contained in:
David P.G
2025-08-25 21:26:18 +08:00
parent 8290c96b1b
commit f80a1669fb
11 changed files with 86 additions and 155 deletions
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14
DMS.Infrastructure/Interfaces/Services/IOpcUaService.cs
View File

@@ -9,25 +9,15 @@ namespace DMS.Infrastructure.Interfaces.Services
{
public interface IOpcUaService
{
/// <summary>
/// 创建 OPC UA 会话
/// </summary>
/// <param name="opcUaServerUrl">OPC UA 服务器地址</param>
/// <param name="stoppingToken">取消令牌</param>
/// <returns></returns>
public Task CreateSession(string opcUaServerUrl, CancellationToken stoppingToken = default);
/// <summary>
/// 连接到 OPC UA 服务器（异步）
/// </summary>
/// <param name="stoppingToken">取消令牌</param>
/// <returns></returns>
public Task ConnectAsync(CancellationToken stoppingToken = default);
public Task ConnectAsync(string opcUaServerUrl,CancellationToken stoppingToken = default);
/// <summary>
/// 连接到 OPC UA 服务器（同步）
/// </summary>
public void Connect();
/// <summary>
/// 断开 OPC UA 服务器连接

59
DMS.Infrastructure/Services/OpcUaService.cs
View File

@@ -14,7 +14,7 @@ namespace DMS.Infrastructure.Services
public class OpcUaService : IOpcUaService
{
private Session? _session;
private string? _serverUrl;
private string _serverUrl;
/// <summary>
/// 创建 OPC UA 会话
@@ -22,17 +22,14 @@ namespace DMS.Infrastructure.Services
/// <param name="opcUaServerUrl">OPC UA 服务器地址</param>
/// <param name="stoppingToken">取消令牌</param>
/// <returns></returns>
public async Task CreateSession(string opcUaServerUrl, CancellationToken stoppingToken = default)
public async Task CreateSession( CancellationToken stoppingToken = default)
{
if (string.IsNullOrEmpty(opcUaServerUrl))
{
throw new ArgumentException("OPC UA server URL cannot be null or empty.", nameof(opcUaServerUrl));
}
try
{
_session = await OpcUaHelper.CreateOpcUaSessionAsync(opcUaServerUrl, stoppingToken);
_serverUrl = opcUaServerUrl;
_session = await OpcUaHelper.CreateOpcUaSessionAsync(_serverUrl, stoppingToken);
}
catch (Exception ex)
{
@@ -43,13 +40,18 @@ namespace DMS.Infrastructure.Services
/// <summary>
/// 连接到 OPC UA 服务器
/// </summary>
public async Task ConnectAsync(CancellationToken stoppingToken = default)
public async Task ConnectAsync(string opcUaServerUrl, CancellationToken stoppingToken = default)
{
_serverUrl = opcUaServerUrl;
if (string.IsNullOrEmpty(opcUaServerUrl))
{
throw new ArgumentException("OPC UA server URL cannot be null or empty.", nameof(opcUaServerUrl));
}
if (string.IsNullOrEmpty(_serverUrl))
{
throw new InvalidOperationException("Server URL is not set. Please call CreateSession first.");
}
// 如果已经连接，直接返回
if (_session?.Connected == true)
{
@@ -57,43 +59,10 @@ namespace DMS.Infrastructure.Services
}
// 重新创建会话
await CreateSession(_serverUrl, stoppingToken);
await CreateSession( stoppingToken);
}
/// <summary>
/// 连接到 OPC UA 服务器（同步版本，用于向后兼容）
/// </summary>
public void Connect()
{
if (string.IsNullOrEmpty(_serverUrl))
{
throw new InvalidOperationException("Server URL is not set. Please call CreateSession first.");
}
// 如果已经连接，直接返回
if (_session?.Connected == true)
{
return;
}
// 检查会话是否存在但未连接
if (_session != null)
{
// 尝试重新激活会话
try
{
_session.Reconnect();
return;
}
catch
{
// 如果重新连接失败，继续到重新创建会话的步骤
}
}
// 如果没有会话或重新连接失败，抛出异常提示需要调用 CreateSession
throw new InvalidOperationException("Session is not created or connection lost. Please call CreateSession first.");
}
/// <summary>
/// 断开 OPC UA 服务器连接