Create tracer.h

Author: zarinatlupova

include/ydb-cpp-sdk/client/tracing/tracer.h

@@ -0,0 +1,25 @@
+#pragma once
+
+#include <memory>
+#include <string>
+
+namespace NYdb::inline V3 {
+namespace NTracing {
+
+class ISpan {
+public:
+    virtual ~ISpan() = default;
+
+    virtual void AddAttribute(const std::string& key, const std::string& value) = 0;
+    virtual void End() = 0;
+};
+
+class ITracer {
+public:
+    virtual ~ITracer() = default;
+
+    virtual std::unique_ptr<ISpan> StartSpan(const std::string& name) = 0;
+};
+
+} // namespace NTracing
+} // namespace NYdb