276 lines
8.6 KiB
C#
276 lines
8.6 KiB
C#
#region copyright
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//------------------------------------------------------------------------------
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// 此代码版权声明为全文件覆盖，如有原作者特别声明，会在下方手动补充
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// 此代码版权（除特别声明外的代码）归作者本人Diego所有
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// 源代码使用协议遵循本仓库的开源协议及附加协议
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// Gitee源代码仓库：https://gitee.com/diego2098/ThingsGateway
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// Github源代码仓库：https://github.com/kimdiego2098/ThingsGateway
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// 使用文档：https://diego2098.gitee.io/thingsgateway-docs/
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// QQ群：605534569
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//------------------------------------------------------------------------------
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#endregion
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using System.Runtime.InteropServices;
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using ThingsGateway.Foundation.Adapter.OPCDA.Rcw;
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namespace ThingsGateway.Foundation.Adapter.OPCDA.Da;
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#pragma warning disable CA1416 // 验证平台兼容性
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internal class OpcServer : IDisposable
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{
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private bool disposedValue;
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private IOPCServer m_OpcServer = null;
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internal OpcServer(string name, string host = "localhost")
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{
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Name = name;
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if (string.IsNullOrEmpty(host))
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{
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Host = "localhost";
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}
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else
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{
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Host = host;
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}
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}
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internal string Host { get; private set; }
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internal bool IsConnected { get; private set; } = false;
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internal string Name { get; private set; }
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internal List<OpcGroup> OpcGroups { get; private set; } = new List<OpcGroup>(10);
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internal ServerStatus ServerStatus { get; private set; } = new ServerStatus();
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public void Dispose()
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{
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Dispose(disposing: true);
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GC.SuppressFinalize(this);
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}
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internal OpcGroup AddGroup(string groupName)
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{
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return AddGroup(groupName, true, 1000, 0);
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}
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/// <returns></returns>
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internal OpcGroup AddGroup(string groupName, bool active, int reqUpdateRate, float deadBand)
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{
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if (null == m_OpcServer || IsConnected == false)
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throw new("未初始化连接！");
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OpcGroup group = new(groupName, active, reqUpdateRate, deadBand);
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Guid riid = typeof(IOPCItemMgt).GUID;
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m_OpcServer?.AddGroup(group.Name,
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group.IsActive ? 1 : 0,//IsActive
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group.RequestUpdateRate,//RequestedUpdateRate 1000ms
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group.ClientGroupHandle,
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group.TimeBias.AddrOfPinnedObject(),
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group.PercendDeadBand.AddrOfPinnedObject(),
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group.LCID,
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out group.serverGroupHandle,
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out group.revisedUpdateRate,
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ref riid,
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out group.groupPointer);
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if (group.groupPointer != null)
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{
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group.InitIoInterfaces(group.groupPointer);
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OpcGroups.Add(group);
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}
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else
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{
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throw new("添加OPC组错误，OPC服务器返回null");
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}
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return group;
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}
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/// <summary>
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/// 获取节点
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/// </summary>
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internal List<BrowseElement> Browse(string itemId = null)
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{
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lock (this)
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{
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if (null == m_OpcServer || IsConnected == false)
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throw new("未初始化连接！");
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var count = 0;
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var moreElements = 0;
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var pContinuationPoint = IntPtr.Zero;
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var pElements = IntPtr.Zero;
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var filterId = new PropertyID[]
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{
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new PropertyID(1),
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new PropertyID(3),
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new PropertyID(4),
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new PropertyID(5),
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new PropertyID(6),
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new PropertyID(101),
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};
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var server = m_OpcServer as IOPCBrowse;
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server.Browse(
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string.IsNullOrEmpty(itemId) ? "" : itemId,
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ref pContinuationPoint,
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int.MaxValue,
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OPCBROWSEFILTER.OPC_BROWSE_FILTER_ALL,
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"",
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"",
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0,
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1,
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filterId.Length,
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Interop.GetPropertyIDs(filterId),
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out moreElements,
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out count,
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out pElements);
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BrowseElement[] browseElements = Interop.GetBrowseElements(ref pElements, count, true);
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string stringUni = Marshal.PtrToStringUni(pContinuationPoint);
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Marshal.FreeCoTaskMem(pContinuationPoint);
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this.ProcessResults(browseElements, filterId);
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return browseElements?.ToList();
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}
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}
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internal void Connect()
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{
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if (!string.IsNullOrEmpty(Host) && !string.IsNullOrEmpty(Name))
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{
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var info = Discovery.OpcDiscovery.GetOpcServer(Name, Host);
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object o = Comn.ComInterop.CreateInstance(info.CLSID, Host);
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if (o == null)
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{
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throw new(string.Format("{0}{1}无法创建com对象", info.CLSID, Host));
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}
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m_OpcServer = (IOPCServer)o;
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IsConnected = true;
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}
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else
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throw new("应初始化Host与Name");
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}
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/// <summary>
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/// 服务器状态
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/// </summary>
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/// <returns></returns>
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internal ServerStatus GetServerStatus()
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{
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ServerStatus serverStatus = null;
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try
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{
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if (null == m_OpcServer || IsConnected == false)
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throw new("未初始化连接！");
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IntPtr statusPtr = IntPtr.Zero;
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m_OpcServer?.GetStatus(out statusPtr);
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OPCSERVERSTATUS status;
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if (statusPtr != IntPtr.Zero)
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{
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object o = Marshal.PtrToStructure(statusPtr, typeof(OPCSERVERSTATUS));
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Marshal.FreeCoTaskMem(statusPtr);
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if (o != null)
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{
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status = (OPCSERVERSTATUS)o;
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serverStatus = new();
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serverStatus.Version = status.wMajorVersion.ToString() + "." + status.wMinorVersion.ToString() + "." + status.wBuildNumber.ToString();
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serverStatus.ServerState = status.dwServerState;
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serverStatus.StartTime = Comn.Convert.FileTimeToDateTime(status.ftStartTime);
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serverStatus.CurrentTime = Comn.Convert.FileTimeToDateTime(status.ftCurrentTime);
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serverStatus.LastUpdateTime = Comn.Convert.FileTimeToDateTime(status.ftLastUpdateTime);
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serverStatus.VendorInfo = status.szVendorInfo;
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IsConnected = true;
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return serverStatus;
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}
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else
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{
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IsConnected = false;
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throw new("未知错误");
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}
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}
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else
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{
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IsConnected = false;
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throw new("未知错误");
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}
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}
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finally
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{
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if (serverStatus != null)
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IsConnected = true;
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else
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IsConnected = false;
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ServerStatus = serverStatus;
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}
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}
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internal void RemoveGroup(OpcGroup group)
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{
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if (OpcGroups.Contains(group))
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{
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m_OpcServer?.RemoveGroup(group.ServerGroupHandle, 1);
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OpcGroups.Remove(group);
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}
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}
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protected virtual void Dispose(bool disposing)
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{
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if (!disposedValue)
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{
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try
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{
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for (int i = 0; i < OpcGroups.Count; i++)
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RemoveGroup(OpcGroups[i]);
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}
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catch
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{
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}
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if (m_OpcServer != null)
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{
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Marshal.ReleaseComObject(m_OpcServer);
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m_OpcServer = null;
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}
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if (disposing)
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{
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OpcGroups.Clear();
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}
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disposedValue = true;
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}
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}
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private void ProcessResults(BrowseElement[] elements, PropertyID[] propertyIDs)
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{
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if (elements == null)
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return;
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foreach (BrowseElement element in elements)
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{
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if (element.Properties != null)
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{
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foreach (ItemProperty property in element.Properties)
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{
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if (propertyIDs != null)
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{
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foreach (PropertyID propertyId in propertyIDs)
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{
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if (property.ID.Code == propertyId.Code)
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{
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property.ID = propertyId;
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break;
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}
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}
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}
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}
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}
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}
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}
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}
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