dommessage

src/message_bus/pipeline/derivation/DerivationEngine.cpp

@@ -0,0 +1,44 @@
+#include "message_bus/pipeline/derivation/DerivationEngine.h"
+
+#include <QJsonArray>
+
+namespace softbus::message_bus::pipeline::derivation
+{
+
+DerivationEngine& DerivationEngine::instance()
+{
+    static DerivationEngine eng;
+    return eng;
+}
+
+void DerivationEngine::deriveFromEnriched(const softbus::core::models::EnrichedMessage& in,
+                                          std::vector<softbus::core::models::EnrichedMessage>& outAppend) const
+{
+    if (!m_enabled) {
+        return;
+    }
+    if (!in.attributes.value(QStringLiteral("sb.deriveMirror")).toBool()) {
+        return;
+    }
+    const QString srcPoint = in.attributes.value(QStringLiteral("pointId")).toString();
+    if (srcPoint.isEmpty()) {
+        return;
+    }
+    // MVP：若存在派生后缀配置则复制一份工程值到派生点（示例约定：pointId + ".mirror"）
+    const QString mirrorId = srcPoint + QStringLiteral(".mirror");
+    softbus::core::models::EnrichedMessage derived;
+    derived.sourceMessageId = mirrorId;
+    derived.logicalName = in.logicalName + QStringLiteral(" (derived)");
+    derived.unit = in.unit;
+    derived.engineeringValue = in.engineeringValue;
+    derived.quality = in.quality;
+    derived.attributes = in.attributes;
+    derived.traceLog = in.traceLog;
+    derived.attributes.insert(QStringLiteral("pointId"), mirrorId);
+    derived.attributes.insert(QStringLiteral("derivedFrom"), QJsonArray{srcPoint});
+    derived.attributes.insert(QStringLiteral("derivationRuleId"), QStringLiteral("builtin.mirror"));
+    derived.attributes.insert(QStringLiteral("derivationVersion"), QStringLiteral("1"));
+    outAppend.push_back(std::move(derived));
+}
+
+} // namespace softbus::message_bus::pipeline::derivation