Separate TGenStep class from BlobDepot and move it to common utils (#5193)

Author: alexvru

ydb/core/blob_depot/data.cpp

@@ -732,8 +732,3 @@ template<>
 void Out<NKikimr::NBlobDepot::TGivenIdRange>(IOutputStream& s, const NKikimr::NBlobDepot::TGivenIdRange& x) {
     x.Output(s);
 }
-
-template<>
-void Out<NKikimr::NBlobDepot::TGenStep>(IOutputStream& s, const NKikimr::NBlobDepot::TGenStep& x) {
-    x.Output(s);
-}

ydb/core/blob_depot/defs.h

@@ -16,6 +16,7 @@
 #include <ydb/core/protos/blob_depot.pb.h>
 #include <ydb/core/protos/counters_blob_depot.pb.h>
 #include <ydb/core/util/format.h>
+#include <ydb/core/util/gen_step.h>
 #include <ydb/core/util/stlog.h>
 
 #include <library/cpp/monlib/service/pages/templates.h>

ydb/core/blob_depot/types.h

@@ -117,6 +117,10 @@ namespace NKikimr::NBlobDepot {
                 type == EBlobType::VG_FOOTER_BLOB || type == EBlobType::VG_GC_BLOB);
             return cookie >> typeBits;
         }
+
+        explicit operator TGenStep() const {
+            return {Generation, Step};
+        }
     };
 
     class TGivenIdRange {
@@ -195,65 +199,6 @@ namespace NKikimr::NBlobDepot {
         return true;
     }
 
-    class TGenStep {
-        ui64 Value = 0;
-
-    public:
-        TGenStep() = default;
-        TGenStep(const TGenStep&) = default;
-        TGenStep &operator=(const TGenStep& other) = default;
-
-        explicit TGenStep(ui64 value)
-            : Value(value)
-        {}
-
-        TGenStep(ui32 gen, ui32 step)
-            : Value(ui64(gen) << 32 | step)
-        {}
-
-        explicit TGenStep(const TLogoBlobID& id)
-            : TGenStep(id.Generation(), id.Step())
-        {}
-        
-        explicit TGenStep(const TBlobSeqId& id)
-            : TGenStep(id.Generation, id.Step)
-        {}
-
-        explicit operator ui64() const {
-            return Value;
-        }
-
-        ui32 Generation() const {
-            return Value >> 32;
-        }
-
-        ui32 Step() const {
-            return Value;
-        }
-
-        void Output(IOutputStream& s) const {
-            s << Generation() << ":" << Step();
-        }
-
-        TString ToString() const {
-            TStringStream s;
-            Output(s);
-            return s.Str();
-        }
-
-        TGenStep Previous() const {
-            Y_ABORT_UNLESS(Value);
-            return TGenStep(Value - 1);
-        }
-
-        friend bool operator ==(const TGenStep& x, const TGenStep& y) { return x.Value == y.Value; }
-        friend bool operator !=(const TGenStep& x, const TGenStep& y) { return x.Value != y.Value; }
-        friend bool operator < (const TGenStep& x, const TGenStep& y) { return x.Value <  y.Value; }
-        friend bool operator <=(const TGenStep& x, const TGenStep& y) { return x.Value <= y.Value; }
-        friend bool operator > (const TGenStep& x, const TGenStep& y) { return x.Value >  y.Value; }
-        friend bool operator >=(const TGenStep& x, const TGenStep& y) { return x.Value >= y.Value; }
-    };
-
 #define BDEV(MARKER, TEXT, ...) \
     do { \
         auto& ctx = *TlsActivationContext; \

ydb/core/util/gen_step.cpp

@@ -0,0 +1,6 @@
+#include "gen_step.h"
+
+template<>
+void Out<NKikimr::TGenStep>(IOutputStream& s, const NKikimr::TGenStep& x) {
+    x.Output(s);
+}

ydb/core/util/gen_step.h

@@ -0,0 +1,61 @@
+#pragma once
+
+#include <ydb/core/base/logoblob.h>
+
+#include <util/generic/string.h>
+#include <util/stream/output.h>
+#include <util/stream/str.h>
+
+namespace NKikimr {
+
+    class TGenStep {
+        ui64 Value = 0;
+
+    public:
+        TGenStep() = default;
+        TGenStep(const TGenStep&) = default;
+        TGenStep &operator=(const TGenStep&) = default;
+
+        explicit TGenStep(ui64 value)
+            : Value(value)
+        {}
+
+        TGenStep(ui32 gen, ui32 step)
+            : Value(ui64(gen) << 32 | step)
+        {}
+
+        explicit TGenStep(const TLogoBlobID& id)
+            : TGenStep(id.Generation(), id.Step())
+        {}
+
+        explicit operator ui64() const {
+            return Value;
+        }
+
+        ui32 Generation() const {
+            return Value >> 32;
+        }
+
+        ui32 Step() const {
+            return Value;
+        }
+
+        void Output(IOutputStream& s) const {
+            s << Generation() << ":" << Step();
+        }
+
+        TString ToString() const {
+            TStringStream s;
+            Output(s);
+            return s.Str();
+        }
+
+        TGenStep Previous() const {
+            Y_ABORT_UNLESS(Value);
+            return TGenStep(Value - 1);
+        }
+
+        friend auto operator <=>(const TGenStep& x, const TGenStep& y) = default;
+    };
+
+} // NKikimr

ydb/core/util/ya.make

@@ -24,6 +24,8 @@ SRCS(
     format.h
     fragmented_buffer.cpp
     fragmented_buffer.h
+    gen_step.cpp
+    gen_step.h
     hazard.cpp
     hyperlog_counter.cpp
     hyperlog_counter.h