Implement worker MXAccess event queue

2026-04-26 19:04:56 -04:00
parent 366f57198f
commit dd455089b4
14 changed files with 806 additions and 17 deletions
@@ -0,0 +1,221 @@
+using System;
+using MxGateway.Contracts.Proto;
+using MxGateway.Worker.Conversion;
+
+namespace MxGateway.Worker.MxAccess;
+
+public sealed class MxAccessEventMapper
+{
+    private readonly VariantConverter variantConverter;
+    private readonly MxStatusProxyConverter statusProxyConverter;
+
+    public MxAccessEventMapper()
+        : this(new VariantConverter(), new MxStatusProxyConverter())
+    {
+    }
+
+    public MxAccessEventMapper(
+        VariantConverter variantConverter,
+        MxStatusProxyConverter statusProxyConverter)
+    {
+        this.variantConverter = variantConverter ?? throw new ArgumentNullException(nameof(variantConverter));
+        this.statusProxyConverter = statusProxyConverter ?? throw new ArgumentNullException(nameof(statusProxyConverter));
+    }
+
+    public MxEvent CreateOnDataChange(
+        string sessionId,
+        int serverHandle,
+        int itemHandle,
+        object? value,
+        int quality,
+        object? timestamp,
+        Array? statuses)
+    {
+        MxEvent mxEvent = CreateBaseEvent(
+            MxEventFamily.OnDataChange,
+            sessionId,
+            serverHandle,
+            itemHandle,
+            statuses);
+        mxEvent.Value = variantConverter.Convert(value);
+        mxEvent.Quality = quality;
+        ApplySourceTimestamp(mxEvent, timestamp);
+        mxEvent.OnDataChange = new OnDataChangeEvent();
+
+        return mxEvent;
+    }
+
+    public MxEvent CreateOnWriteComplete(
+        string sessionId,
+        int serverHandle,
+        int itemHandle,
+        Array? statuses)
+    {
+        MxEvent mxEvent = CreateBaseEvent(
+            MxEventFamily.OnWriteComplete,
+            sessionId,
+            serverHandle,
+            itemHandle,
+            statuses);
+        mxEvent.OnWriteComplete = new OnWriteCompleteEvent();
+
+        return mxEvent;
+    }
+
+    public MxEvent CreateOperationComplete(
+        string sessionId,
+        int serverHandle,
+        int itemHandle,
+        Array? statuses)
+    {
+        MxEvent mxEvent = CreateBaseEvent(
+            MxEventFamily.OperationComplete,
+            sessionId,
+            serverHandle,
+            itemHandle,
+            statuses);
+        mxEvent.OperationComplete = new OperationCompleteEvent();
+
+        return mxEvent;
+    }
+
+    public MxEvent CreateOnBufferedDataChange(
+        string sessionId,
+        int serverHandle,
+        int itemHandle,
+        int rawDataType,
+        object? value,
+        object? quality,
+        object? timestamp,
+        Array? statuses)
+    {
+        MxDataType dataType = MapMxDataType(rawDataType);
+        MxEvent mxEvent = CreateBaseEvent(
+            MxEventFamily.OnBufferedDataChange,
+            sessionId,
+            serverHandle,
+            itemHandle,
+            statuses);
+        mxEvent.Value = variantConverter.Convert(value, dataType);
+        mxEvent.OnBufferedDataChange = new OnBufferedDataChangeEvent
+        {
+            DataType = dataType,
+            RawDataType = rawDataType,
+            QualityValues = ConvertBufferedArray(quality, MxDataType.Integer),
+            TimestampValues = ConvertBufferedArray(timestamp, MxDataType.Time),
+        };
+
+        return mxEvent;
+    }
+
+    public static MxDataType MapMxDataType(int rawDataType)
+    {
+        return rawDataType switch
+        {
+            -1 => MxDataType.Unknown,
+            0 => MxDataType.NoData,
+            1 => MxDataType.Boolean,
+            2 => MxDataType.Integer,
+            3 => MxDataType.Float,
+            4 => MxDataType.Double,
+            5 => MxDataType.String,
+            6 => MxDataType.Time,
+            7 => MxDataType.ElapsedTime,
+            8 => MxDataType.ReferenceType,
+            9 => MxDataType.StatusType,
+            10 => MxDataType.Enum,
+            11 => MxDataType.SecurityClassificationEnum,
+            12 => MxDataType.DataQualityType,
+            13 => MxDataType.QualifiedEnum,
+            14 => MxDataType.QualifiedStruct,
+            15 => MxDataType.InternationalizedString,
+            16 => MxDataType.BigString,
+            17 => MxDataType.End,
+            _ => MxDataType.Unknown,
+        };
+    }
+
+    private MxEvent CreateBaseEvent(
+        MxEventFamily family,
+        string sessionId,
+        int serverHandle,
+        int itemHandle,
+        Array? statuses)
+    {
+        MxEvent mxEvent = new()
+        {
+            Family = family,
+            SessionId = sessionId ?? string.Empty,
+            ServerHandle = serverHandle,
+            ItemHandle = itemHandle,
+        };
+        mxEvent.Statuses.Add(statusProxyConverter.ConvertMany(statuses));
+
+        return mxEvent;
+    }
+
+    private void ApplySourceTimestamp(
+        MxEvent mxEvent,
+        object? timestamp)
+    {
+        MxValue convertedTimestamp = variantConverter.Convert(timestamp, MxDataType.Time);
+        if (convertedTimestamp.KindCase == MxValue.KindOneofCase.TimestampValue)
+        {
+            mxEvent.SourceTimestamp = convertedTimestamp.TimestampValue;
+            return;
+        }
+
+        if (!string.IsNullOrWhiteSpace(convertedTimestamp.RawDiagnostic))
+        {
+            mxEvent.RawStatus = string.IsNullOrWhiteSpace(mxEvent.RawStatus)
+                ? convertedTimestamp.RawDiagnostic
+                : $"{mxEvent.RawStatus}; {convertedTimestamp.RawDiagnostic}";
+        }
+    }
+
+    private MxArray ConvertBufferedArray(
+        object? value,
+        MxDataType expectedElementDataType)
+    {
+        if (value is Array array)
+        {
+            return variantConverter.ConvertArray(array, expectedElementDataType);
+        }
+
+        MxValue converted = variantConverter.Convert(value, expectedElementDataType);
+        if (converted.KindCase == MxValue.KindOneofCase.ArrayValue)
+        {
+            return converted.ArrayValue;
+        }
+
+        MxArray mxArray = new()
+        {
+            ElementDataType = converted.DataType,
+            VariantType = converted.VariantType,
+            RawElementDataType = converted.RawDataType,
+            RawDiagnostic = string.IsNullOrWhiteSpace(converted.RawDiagnostic)
+                ? "Buffered MXAccess event argument was not a SAFEARRAY."
+                : converted.RawDiagnostic,
+        };
+
+        switch (converted.KindCase)
+        {
+            case MxValue.KindOneofCase.Int32Value:
+                mxArray.Int32Values = new Int32Array();
+                mxArray.Int32Values.Values.Add(converted.Int32Value);
+                break;
+
+            case MxValue.KindOneofCase.Int64Value:
+                mxArray.Int64Values = new Int64Array();
+                mxArray.Int64Values.Values.Add(converted.Int64Value);
+                break;
+
+            case MxValue.KindOneofCase.TimestampValue:
+                mxArray.TimestampValues = new TimestampArray();
+                mxArray.TimestampValues.Values.Add(converted.TimestampValue);
+                break;
+        }
+
+        return mxArray;
+    }
+}