added GetOpenTelemetryTraceParent() to IRequestCtxBaseMtSafe

Author: asmyasnikov

ydb/core/grpc_services/base/base.h

@@ -598,6 +598,10 @@ class TRefreshTokenImpl
         return {};
     }
 
+    TMaybe<TString> GetOpenTelemetryTraceParent() const override {
+        return {};
+    }
+
     TMaybe<TString> GetSdkBuildInfo() const {
         return {};
     }
@@ -817,6 +821,10 @@ class TGRpcRequestBiStreamWrapper
         return GetPeerMetaValues(NYdb::YDB_TRACE_ID_HEADER);
     }
 
+    TMaybe<TString> GetOpenTelemetryTraceParent() const override {
+        return GetPeerMetaValues(NYdb::OTEL_TRACE_HEADER);
+    }
+
     const TMaybe<TString> GetSdkBuildInfo() const {
         return GetPeerMetaValues(NYdb::YDB_SDK_BUILD_INFO_HEADER);
     }
@@ -1139,6 +1147,10 @@ class TGRpcRequestWrapperImpl
         return GetPeerMetaValues(NYdb::YDB_TRACE_ID_HEADER);
     }
 
+    TMaybe<TString> GetOpenTelemetryTraceParent() const override {
+        return GetPeerMetaValues(NYdb::OTEL_TRACE_HEADER);
+    }
+
     const TMaybe<TString> GetSdkBuildInfo() const {
         return GetPeerMetaValues(NYdb::YDB_SDK_BUILD_INFO_HEADER);
     }

ydb/core/grpc_services/base/iface.h

@@ -21,6 +21,7 @@ using TAuditLogHook = std::function<void (ui32 status, const TAuditLogParts&)>;
 class IRequestCtxBaseMtSafe {
 public:
     virtual TMaybe<TString> GetTraceId() const = 0;
+    virtual TMaybe<TString> GetOpenTelemetryTraceParent() const = 0;
     // Returns client provided database name
     virtual const TMaybe<TString> GetDatabaseName() const = 0;
     // Returns "internal" token (result of ticket parser authentication)

ydb/core/grpc_services/local_rpc/local_rpc.h

@@ -191,6 +191,10 @@ class TLocalRpcCtx : public NGRpcService::IRequestOpCtx {
         return Nothing();
     }
 
+    TMaybe<TString> GetOpenTelemetryTraceParent() const override {
+        return Nothing();
+    }
+
     TInstant GetDeadline() const override {
         return TInstant::Max();
     }