Moved commit "YDB-2822 Fix UUID column usage in CDC" from ydb repo

Author: SammyVimes

src/library/uuid/uuid.cpp

@@ -57,6 +57,16 @@ void UuidBytesToString(const std::string& in, IOutputStream& out) {
     NUuid::UuidToString(dw, out);
 }
 
+void UuidHalfsToString(ui64 low, ui64 hi, IOutputStream& out) {
+    union {
+        ui16 dw[8];
+        ui64 half[2];
+    } buf;
+    buf.half[0] = low;
+    buf.half[1] = hi;
+    NUuid::UuidToString(buf.dw, out);
+}
+
 void UuidHalfsToByteString(ui64 low, ui64 hi, IOutputStream& out) {
     union {
         char bytes[16];

src/library/uuid/uuid.h

@@ -15,6 +15,7 @@ static constexpr ui32 UUID_LEN = 16;
 
 std::string UuidBytesToString(const std::string& in);
 void UuidBytesToString(const std::string& in, IOutputStream& out);
+void UuidHalfsToString(ui64 low, ui64 hi, IOutputStream& out);
 void UuidToString(ui16 dw[8], IOutputStream& out);
 void UuidHalfsToByteString(ui64 low, ui64 hi, IOutputStream& out);