Fix AvatarAddrAndScoresWithRank edge case

ArenaService.Tests/ArenaService.Tests.csproj

@@ -0,0 +1,27 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+    <PropertyGroup>
+        <TargetFramework>net8.0</TargetFramework>
+        <ImplicitUsings>enable</ImplicitUsings>
+        <Nullable>enable</Nullable>
+
+        <IsPackable>false</IsPackable>
+        <IsTestProject>true</IsTestProject>
+    </PropertyGroup>
+
+    <ItemGroup>
+        <PackageReference Include="coverlet.collector" Version="6.0.0"/>
+        <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.8.0"/>
+        <PackageReference Include="xunit" Version="2.5.3"/>
+        <PackageReference Include="xunit.runner.visualstudio" Version="2.5.3"/>
+    </ItemGroup>
+
+    <ItemGroup>
+        <Using Include="Xunit"/>
+    </ItemGroup>
+
+    <ItemGroup>
+      <ProjectReference Include="..\ArenaService\ArenaService\ArenaService.csproj" />
+    </ItemGroup>
+
+</Project>

ArenaService.Tests/AvatarAddressAndScoreTest.cs

@@ -0,0 +1,36 @@
+using Libplanet.Crypto;
+
+namespace ArenaService.Tests;
+
+public class AvatarAddressAndScoreTest
+{
+    [Fact]
+    public void Except_List()
+    {
+        var address = new PrivateKey().Address;
+        var address2 = new PrivateKey().Address;
+        var addressAndScore = new AvatarAddressAndScore(address, 100);
+        var addressAndScore2 = new AvatarAddressAndScore(address2, 100);
+        var updated = new AvatarAddressAndScore(address, 200);
+
+        // not equal because score is different
+        Assert.NotEqual(addressAndScore, updated);
+        // not equal because address is different
+        Assert.NotEqual(addressAndScore, addressAndScore2);
+
+        var prev = new List<AvatarAddressAndScore>
+        {
+            addressAndScore,
+            addressAndScore2,
+        };
+        var next = new List<AvatarAddressAndScore>
+        {
+            updated,
+            addressAndScore2
+        };
+        var excepted = Assert.Single(next.Except(prev));
+        Assert.Equal(updated.AvatarAddr, excepted.AvatarAddr);
+        Assert.Equal(updated.Score, excepted.Score);
+        Assert.Equal(updated, excepted);
+    }
+}

ArenaService/ArenaService.sln

@@ -4,6 +4,8 @@ Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "ArenaService", "ArenaServic
 EndProject
 Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "NineChronicles.RPC.Shared", "..\NineChronicles.RPC.Shared\NineChronicles.RPC.Shared\NineChronicles.RPC.Shared.csproj", "{C936C300-10D8-4A70-8815-67F16CEC6A0A}"
 EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "ArenaService.Tests", "..\ArenaService.Tests\ArenaService.Tests.csproj", "{B8F66D71-6DAB-4CF3-B5DA-E35FAAB393F9}"
+EndProject
 Global
 	GlobalSection(SolutionConfigurationPlatforms) = preSolution
 		Debug|Any CPU = Debug|Any CPU
@@ -18,5 +20,9 @@ Global
 		{C936C300-10D8-4A70-8815-67F16CEC6A0A}.Debug|Any CPU.Build.0 = Debug|Any CPU
 		{C936C300-10D8-4A70-8815-67F16CEC6A0A}.Release|Any CPU.ActiveCfg = Release|Any CPU
 		{C936C300-10D8-4A70-8815-67F16CEC6A0A}.Release|Any CPU.Build.0 = Release|Any CPU
+		{B8F66D71-6DAB-4CF3-B5DA-E35FAAB393F9}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{B8F66D71-6DAB-4CF3-B5DA-E35FAAB393F9}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{B8F66D71-6DAB-4CF3-B5DA-E35FAAB393F9}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{B8F66D71-6DAB-4CF3-B5DA-E35FAAB393F9}.Release|Any CPU.Build.0 = Release|Any CPU
 	EndGlobalSection
 EndGlobal

ArenaService/ArenaService/ArenaParticipant.cs → ArenaService/ArenaService/ArenaParticipantStruct.cs

@@ -1,9 +1,8 @@
 using Libplanet.Crypto;
-using Nekoyume.Model.State;
 
 namespace ArenaService;
 
-public struct ArenaParticipant
+public struct ArenaParticipantStruct
 {
     public Address AvatarAddr { get; set; }
     public int Score { get; set; }
@@ -15,11 +14,11 @@ public struct ArenaParticipant
     public string NameWithHash { get; set; } = "";
     public int Level { get; set; }
 
-    public ArenaParticipant()
+    public ArenaParticipantStruct()
     {
     }
 
-    public ArenaParticipant(
+    public ArenaParticipantStruct(
         Address avatarAddr,
         int score,
         int rank,

ArenaService/ArenaService/ArenaParticipantType.cs

@@ -2,44 +2,44 @@
 
 namespace ArenaService;
 
-public class ArenaParticipantType : ObjectGraphType<ArenaParticipant>
+public class ArenaParticipantType : ObjectGraphType<ArenaParticipantStruct>
 {
     public ArenaParticipantType()
     {
         Field<NonNullGraphType<AddressType>>(
-            nameof(ArenaParticipant.AvatarAddr),
+            nameof(ArenaParticipantStruct.AvatarAddr),
             description: "Address of avatar.",
             resolve: context => context.Source.AvatarAddr);
         Field<NonNullGraphType<IntGraphType>>(
-            nameof(ArenaParticipant.Score),
+            nameof(ArenaParticipantStruct.Score),
             description: "Arena score of avatar.",
             resolve: context => context.Source.Score);
         Field<NonNullGraphType<IntGraphType>>(
-            nameof(ArenaParticipant.Rank),
+            nameof(ArenaParticipantStruct.Rank),
             description: "Arena rank of avatar.",
             resolve: context => context.Source.Rank);
         Field<NonNullGraphType<IntGraphType>>(
-            nameof(ArenaParticipant.WinScore),
+            nameof(ArenaParticipantStruct.WinScore),
             description: "Score for victory.",
             resolve: context => context.Source.WinScore);
         Field<NonNullGraphType<IntGraphType>>(
-            nameof(ArenaParticipant.LoseScore),
+            nameof(ArenaParticipantStruct.LoseScore),
             description: "Score for defeat.",
             resolve: context => context.Source.LoseScore);
         Field<NonNullGraphType<IntGraphType>>(
-            nameof(ArenaParticipant.Cp),
+            nameof(ArenaParticipantStruct.Cp),
             description: "Cp of avatar.",
             resolve: context => context.Source.Cp);
         Field<NonNullGraphType<IntGraphType>>(
-            nameof(ArenaParticipant.PortraitId),
+            nameof(ArenaParticipantStruct.PortraitId),
             description: "Portrait icon id.",
             resolve: context => context.Source.PortraitId);
         Field<NonNullGraphType<IntGraphType>>(
-            nameof(ArenaParticipant.Level),
+            nameof(ArenaParticipantStruct.Level),
             description: "Level of avatar.",
             resolve: context => context.Source.Level);
         Field<NonNullGraphType<StringGraphType>>(
-            nameof(ArenaParticipant.NameWithHash),
+            nameof(ArenaParticipantStruct.NameWithHash),
             description: "Name of avatar.",
             resolve: context => context.Source.NameWithHash);
     }

ArenaService/ArenaService/ArenaWorker.cs

@@ -59,17 +59,20 @@ public async Task PrepareArenaParticipants()
         }
 
         var tip = _rpcClient.Tip!;
+        var blockIndex = tip.Index;
         var currentRoundData = await _rpcClient.GetRoundData(tip, cancellationToken);
         var participants = await _rpcClient.GetArenaParticipantsState(tip, currentRoundData, cancellationToken);
+        var championshipId = currentRoundData.ChampionshipId;
+        var round = currentRoundData.Round;
         var cacheKey = $"{currentRoundData.ChampionshipId}_{currentRoundData.Round}";
         var scoreCacheKey = $"{cacheKey}_scores";
         var prevAddrAndScores = await _service.GetAvatarAddrAndScores(scoreCacheKey);
         var prevArenaParticipants = await _service.GetArenaParticipantsAsync(cacheKey);
         var expiry = TimeSpan.FromMinutes(5);
         if (participants is null)
         {
-            await _service.SetArenaParticipantsAsync(cacheKey, new List<ArenaParticipant>(), expiry);
-            _logger.LogInformation("[ArenaParticipantsWorker] participants({CacheKey}) is null. set empty list", cacheKey);
+            await _service.SetArenaParticipantsAsync(cacheKey, new List<ArenaParticipantStruct>(), expiry);
+            _logger.LogInformation("[ArenaParticipantsWorker] participants({CacheKey}) is null. set empty list on {BlockIndex}", cacheKey, blockIndex);
             return;
         }
 
@@ -79,14 +82,68 @@ public async Task PrepareArenaParticipants()
         // 이전상태의 아바타 주소, 점수를 비교해서 추가되거나 점수가 변경된 대상만 찾음
         var updatedAddressAndScores = avatarAddrAndScores.Except(prevAddrAndScores).ToList();
         // 전체목록의 랭킹 순서 처리
-        var avatarAddrAndScoresWithRank = _rpcClient.AvatarAddrAndScoresWithRank(avatarAddrAndScores);
+        var avatarAddrAndScoresWithRank = AvatarAddrAndScoresWithRank(avatarAddrAndScores);
         // 전체목록의 ArenaParticipant 업데이트
-        var result = await _rpcClient.GetArenaParticipants(tip, updatedAddressAndScores.Select(i => i.AvatarAddr).ToList(), avatarAddrAndScoresWithRank, prevArenaParticipants, cancellationToken);
+        var tuple = await _rpcClient.GetArenaParticipants(tip, championshipId, round, updatedAddressAndScores.Select(i => i.AvatarAddr).ToList(), avatarAddrAndScoresWithRank, prevArenaParticipants, cancellationToken);
         // 캐시 업데이트
-        await _service.SetArenaParticipantsAsync(cacheKey, result, expiry);
+        await _service.SetArenaParticipantsAsync(cacheKey, tuple.Item1, expiry);
         await _service.SetSeasonAsync(cacheKey, expiry);
         await _service.SetAvatarAddrAndScores(scoreCacheKey, avatarAddrAndScores, expiry);
         sw.Stop();
-        _logger.LogInformation("[ArenaParticipantsWorker]Set Arena Cache[{CacheKey}]: {Elapsed}", cacheKey, sw.Elapsed);
+        _logger.LogInformation("[ArenaParticipantsWorker]Set Arena Cache[{CacheKey}] on {BlockIndex}/{LatestBattleBlockIndex}: {Elapsed}", cacheKey, blockIndex, tuple.Item2, sw.Elapsed);
+    }
+
+
+    /// <summary>
+    /// Retrieves the avatar addresses and scores with ranks for a given list of avatar addresses, current round data, and world state.
+    /// </summary>
+    /// <param name="avatarAddrAndScores">Ths list of avatar address and score tuples.</param>
+    /// <returns>The list of avatar addresses, scores, and ranks.</returns>
+    public static List<ArenaScoreAndRank> AvatarAddrAndScoresWithRank(List<AvatarAddressAndScore> avatarAddrAndScores)
+    {
+        if (avatarAddrAndScores.Count == 0)
+        {
+            return new List<ArenaScoreAndRank>();
+        }
+
+        if (avatarAddrAndScores.Count == 1)
+        {
+            var score = avatarAddrAndScores.Single();
+            return [new ArenaScoreAndRank(score.AvatarAddr, score.Score, 1)];
+        }
+
+        var orderedTuples = avatarAddrAndScores
+            .OrderByDescending(tuple => tuple.Score)
+            .ThenBy(tuple => tuple.AvatarAddr)
+            .ToList();
+
+        var avatarAddrAndScoresWithRank = new List<ArenaScoreAndRank>();
+        while (orderedTuples.Count > 0)
+        {
+            // 동점자를 찾기위해 기준 점수 설정
+            var currentScore = orderedTuples.First().Score;
+            var groupSize = 0;
+            var targets = new List<AvatarAddressAndScore>();
+            foreach (var tuple in orderedTuples)
+            {
+                if (currentScore == tuple.Score)
+                {
+                    groupSize++;
+                    targets.Add(tuple);
+                }
+                else
+                {
+                    break;
+                }
+            }
+
+            // 순위는 기존 상위권 순위 + 동점자의 숫자
+            var rank = avatarAddrAndScoresWithRank.Count + groupSize;
+            avatarAddrAndScoresWithRank.AddRange(targets.Select(tuple => new ArenaScoreAndRank(tuple.AvatarAddr, tuple.Score, rank)));
+            // 다음 순위 설정을 위해 이번 그룹 숫자만큼 삭제
+            orderedTuples.RemoveRange(0, groupSize);
+        }
+
+        return avatarAddrAndScoresWithRank;
     }
 }

ArenaService/ArenaService/IRedisArenaParticipantsService.cs

@@ -4,8 +4,8 @@ namespace ArenaService;
 
 public interface IRedisArenaParticipantsService
 {
-    Task<List<ArenaParticipant>> GetArenaParticipantsAsync(string key);
-    Task SetArenaParticipantsAsync(string key, List<ArenaParticipant> value, TimeSpan? expiry = null);
+    Task<List<ArenaParticipantStruct>> GetArenaParticipantsAsync(string key);
+    Task SetArenaParticipantsAsync(string key, List<ArenaParticipantStruct> value, TimeSpan? expiry = null);
     Task<string> GetSeasonKeyAsync();
     Task SetSeasonAsync(string value, TimeSpan? expiry = null);
     Task<List<AvatarAddressAndScore>> GetAvatarAddrAndScores(string key);

ArenaService/ArenaService/RedisArenaParticipantsService.cs

@@ -11,18 +11,18 @@ public class RedisArenaParticipantsService(IConnectionMultiplexer redis)
 
     private readonly IDatabase _db = redis.GetDatabase();
 
-    public async Task<List<ArenaParticipant>> GetArenaParticipantsAsync(string key)
+    public async Task<List<ArenaParticipantStruct>> GetArenaParticipantsAsync(string key)
     {
         RedisValue result = await _db.StringGetAsync(key);
         if (result.IsNull)
         {
-            return new List<ArenaParticipant>();
+            return new List<ArenaParticipantStruct>();
         }
 
-        return JsonSerializer.Deserialize<List<ArenaParticipant>>(result.ToString())!;
+        return JsonSerializer.Deserialize<List<ArenaParticipantStruct>>(result.ToString())!;
     }
 
-    public async Task SetArenaParticipantsAsync(string key, List<ArenaParticipant> value, TimeSpan? expiry = null)
+    public async Task SetArenaParticipantsAsync(string key, List<ArenaParticipantStruct> value, TimeSpan? expiry = null)
     {
         var serialized = JsonSerializer.Serialize(value);
         await _db.StringSetAsync(key, serialized, expiry);