Report full message in JSON when using STLOG (merge from main #19362) (#19479)

Author: alexvru

ydb/core/util/stlog.h

@@ -324,6 +324,10 @@ namespace NKikimr::NStLog {
                     Json.WriteKey("line");
                     Json.Write(Self->Line);
                 }
+                Json.WriteKey("brief_message");
+                Json.Write(Stream.Str());
+                Self->WriteParamsToStream(Stream);
+                Stream << " Marker# " << Self->Marker;
                 Json.WriteKey("message");
                 Json.Write(Stream.Str());
                 Self->WriteParamsToJson(Json);

ydb/core/util/stlog_ut.cpp

@@ -25,16 +25,18 @@ Y_UNIT_TEST_SUITE(StLog) {
             (Param5, TString("abcdef")), (Param6, x1), (Param7, x2), (Param8, x3), (Param9, y1),
             (Param10, y2), (Param11, y3), (Param12, true), (Param13, v), (Param14, status), (Param15, id),
             (Param16, &s));
-        UNIT_ASSERT_VALUES_EQUAL(stream.Str(), "{MARKER1@stlog_ut.cpp:27} hello, world Param1# 1 Param2# c Param3# 1.1 "
+        TString message = "hello, world Param1# 1 Param2# c Param3# 1.1 "
             "Param4# abcdef Param5# abcdef Param6# 1 Param7# 2 Param8# 3 Param9# <null> Param10# <null> Param11# <null> "
             "Param12# true Param13# [1 2 3] Param14# RACE Param15# {RawX1: 1 RawX2: 288230376185266176 "
-            "RawX3: 216172807883587664 } Param16# yep");
+            "RawX3: 216172807883587664 } Param16# yep";
+        UNIT_ASSERT_VALUES_EQUAL(stream.Str(), "{MARKER1@stlog_ut.cpp:27} " + message);
         NKikimr::NStLog::OutputLogJson = true;
         STLOG_STREAM(stream2, MARKER2, "hello, world", (Param1, 1), (Param2, 'c'), (Param3, 1.1f), (Param4, "abcdef"),
             (Param5, TString("abcdef")), (Param6, x1), (Param7, x2), (Param8, x3), (Param9, y1),
             (Param10, y2), (Param11, y3), (Param12, true), (Param13, v), (Param14, status), (Param15, id),
             (Param16, &s));
-        UNIT_ASSERT_VALUES_EQUAL(stream2.Str(), R"({"marker":"MARKER2","file":"stlog_ut.cpp","line":36,"message":"hello, world",)"
+        UNIT_ASSERT_VALUES_EQUAL(stream2.Str(), R"({"marker":"MARKER2","file":"stlog_ut.cpp","line":37,)"
+            R"("brief_message":"hello, world","message":")" + message + R"( Marker# MARKER2",)"
             R"("Param1":1,"Param2":99,"Param3":1.1,"Param4":"abcdef","Param5":"abcdef","Param6":1,"Param7":2,"Param8":3,)"
             R"("Param9":null,"Param10":null,"Param11":null,"Param12":true,"Param13":[1,2,3],"Param14":"RACE","Param15":)"
             R"({"RawX1":"1","RawX2":"288230376185266176","RawX3":"216172807883587664"},"Param16":"yep"})");