Fix grain price fetcher

src/Managing.Api/Program.cs

@@ -240,7 +240,7 @@ builder.Services.RegisterApiDependencies(builder.Configuration);
 
 // Orleans is always configured, but grains can be controlled
 builder.Host.ConfigureOrleans(builder.Configuration, builder.Environment.IsProduction());
-
+builder.Services.AddHostedServices();
 builder.Services.AddEndpointsApiExplorer();
 builder.Services.AddOpenApiDocument(document =>
 {

src/Managing.Api/appsettings.Oda.json

@@ -38,10 +38,10 @@
   "AllowedHosts": "*",
   "KAIGEN_SECRET_KEY": "KaigenXCowchain",
   "KAIGEN_CREDITS_ENABLED": false,
-  "WorkerBotManager": true,
+  "WorkerBotManager": false,
   "WorkerBalancesTracking": false,
   "WorkerNotifyBundleBacktest": false,
-  "WorkerPricesFifteenMinutes": true,
+  "WorkerPricesFifteenMinutes": false,
   "WorkerPricesOneHour": false,
   "WorkerPricesFourHours": false,
   "WorkerPricesOneDay": false,

src/Managing.Application.Abstractions/Grains/IPriceFetcher15MinGrain.cs

@@ -7,7 +7,7 @@ namespace Managing.Application.Abstractions.Grains;
 /// This stateless worker grain handles fetching 5-minute price data from external APIs 
 /// and publishing to Orleans streams.
 /// </summary>
-public partial interface IPriceFetcher5MinGrain : IGrainWithIntegerKey
+public partial interface IPriceFetcher15MinGrain : IGrainWithIntegerKey
 {
     /// <summary>
     /// Fetches 5-minute price data for all supported exchange/ticker combinations

src/Managing.Application.Abstractions/Repositories/ICandleRepository.cs

@@ -25,4 +25,5 @@ public interface ICandleRepository
         Enums.Timeframe timeframe,
         DateTime start);
     Task InsertCandle(Candle candle);
+    Task InsertCandles(IEnumerable<Candle> candles);
 }

src/Managing.Application/Bots/TradingBotBase.cs

@@ -122,8 +122,8 @@ public class TradingBotBase : ITradingBot
         await ServiceScopeHelpers.WithScopedService<IExchangeService>(_scopeFactory, async exchangeService =>
         {
             var candles = await exchangeService.GetCandlesInflux(Account.Exchange, Config.Ticker, PreloadSince,
-                Config.Timeframe, DateTime.UtcNow, 2);
+                Config.Timeframe, DateTime.UtcNow, 1);
-            LastCandle = candles.Last();
+            LastCandle = candles.Single();
         });
     }
 

src/Managing.Application/Grains/PriceFetcher5MinGrain.cs

@@ -1,172 +0,0 @@
-using Managing.Application.Abstractions.Grains;
-using Managing.Application.Abstractions.Repositories;
-using Managing.Application.Abstractions.Services;
-using Managing.Common;
-using Managing.Domain.Accounts;
-using Managing.Domain.Candles;
-using Microsoft.Extensions.Logging;
-using Orleans.Concurrency;
-using Orleans.Streams;
-using static Managing.Common.Enums;
-
-namespace Managing.Application.Grains;
-
-/// <summary>
-/// StatelessWorker grain for fetching 5-minute price data from external APIs and publishing to Orleans streams.
-/// This grain runs every 5 minutes and processes all exchange/ticker combinations for the 5-minute timeframe.
-/// </summary>
-[StatelessWorker]
-public class PriceFetcher5MinGrain : Grain, IPriceFetcher5MinGrain, IRemindable
-{
-    private readonly ILogger<PriceFetcher5MinGrain> _logger;
-    private readonly IExchangeService _exchangeService;
-    private readonly ICandleRepository _candleRepository;
-    private readonly IGrainFactory _grainFactory;
-
-    private const string FetchPricesReminderName = "FetchPricesReminder";
-
-    // Predefined lists of trading parameters to fetch
-    private static readonly TradingExchanges[] SupportedExchanges =
-    {
-        TradingExchanges.GmxV2
-    };
-
-    private static readonly Ticker[] SupportedTickers = Constants.GMX.Config.SupportedTickers;
-
-    private static readonly Timeframe TargetTimeframe = Timeframe.FiveMinutes;
-
-    public PriceFetcher5MinGrain(
-        ILogger<PriceFetcher5MinGrain> logger,
-        IExchangeService exchangeService,
-        ICandleRepository candleRepository,
-        IGrainFactory grainFactory)
-    {
-        _logger = logger;
-        _exchangeService = exchangeService;
-        _candleRepository = candleRepository;
-        _grainFactory = grainFactory;
-    }
-
-    public override async Task OnActivateAsync(CancellationToken cancellationToken)
-    {
-        _logger.LogInformation("PriceFetcher5MinGrain activated");
-
-        // Register a reminder to fetch prices every 5 minutes
-        await this.RegisterOrUpdateReminder(
-            FetchPricesReminderName,
-            TimeSpan.FromMinutes(5),
-            TimeSpan.FromMinutes(5));
-
-        await base.OnActivateAsync(cancellationToken);
-    }
-
-    public async Task<bool> FetchAndPublishPricesAsync()
-    {
-        try
-        {
-            _logger.LogInformation("Starting 5-minute price fetch cycle");
-
-            var fetchTasks = new List<Task>();
-
-            // Create fetch tasks for all exchange/ticker combinations for 5-minute timeframe
-            foreach (var exchange in SupportedExchanges)
-            {
-                foreach (var ticker in SupportedTickers)
-                {
-                    fetchTasks.Add(FetchAndPublish(exchange, ticker, TargetTimeframe));
-                }
-            }
-
-            // Execute all fetch operations in parallel
-            await Task.WhenAll(fetchTasks);
-
-            _logger.LogInformation("Completed 5-minute price fetch cycle for {TotalCombinations} combinations",
-                fetchTasks.Count);
-
-            return true;
-        }
-        catch (Exception ex)
-        {
-            _logger.LogError(ex, "Error during price fetch cycle");
-            return false;
-        }
-    }
-
-    private async Task FetchAndPublish(TradingExchanges exchange, Ticker ticker, Timeframe timeframe)
-    {
-        try
-        {
-            // Create a dummy account for API calls (this may need to be adjusted based on your implementation)
-            var account = new Account
-            {
-                Name = "PriceFetcher",
-                Exchange = exchange,
-                Type = AccountType.Watch
-            };
-
-            // Get the last candle date from database
-            var existingCandles = await _candleRepository.GetCandles(exchange, ticker, timeframe,
-                DateTime.UtcNow.AddDays(-7), 1);
-
-            var startDate = existingCandles.Any()
-                ? existingCandles.Max(c => c.Date).AddMinutes(GetTimeframeMinutes(timeframe))
-                : DateTime.UtcNow.AddDays(-1);
-
-            // Fetch new candles from external API
-            var newCandles = await _exchangeService.GetCandles(account, ticker, startDate, timeframe, true);
-
-            if (newCandles?.Any() == true)
-            {
-                var streamProvider = this.GetStreamProvider("DefaultStreamProvider");
-                var streamKey = $"{exchange}-{ticker}-{timeframe}";
-                var stream = streamProvider.GetStream<Candle>(streamKey);
-
-                _logger.LogDebug("Fetched {CandleCount} new candles for {StreamKey}",
-                    newCandles.Count, streamKey);
-
-                // Process each new candle
-                foreach (var candle in newCandles.OrderBy(c => c.Date))
-                {
-                    // Ensure candle has correct metadata
-                    candle.Exchange = exchange;
-                    candle.Ticker = ticker;
-                    candle.Timeframe = timeframe;
-
-                    // Save to database
-                    await _candleRepository.InsertCandle(candle);
-
-                    // Publish to stream
-                    await stream.OnNextAsync(candle);
-
-                    _logger.LogTrace("Published candle for {StreamKey} at {Date}",
-                        streamKey, candle.Date);
-                }
-            }
-        }
-        catch (Exception ex)
-        {
-            _logger.LogError(ex, "Error fetching prices for {Exchange}-{Ticker}-{Timeframe}",
-                exchange, ticker, timeframe);
-        }
-    }
-
-    private static int GetTimeframeMinutes(Timeframe timeframe) => timeframe switch
-    {
-        Timeframe.OneMinute => 1,
-        Timeframe.FiveMinutes => 5,
-        Timeframe.FifteenMinutes => 15,
-        Timeframe.ThirtyMinutes => 30,
-        Timeframe.OneHour => 60,
-        Timeframe.FourHour => 240,
-        Timeframe.OneDay => 1440,
-        _ => 1
-    };
-
-    public async Task ReceiveReminder(string reminderName, TickStatus status)
-    {
-        if (reminderName == FetchPricesReminderName)
-        {
-            await FetchAndPublishPricesAsync();
-        }
-    }
-}

src/Managing.Application/Grains/PriceFetcherInitializer.cs

@@ -5,17 +5,23 @@ namespace Managing.Application.Grains;
 
 public class PriceFetcherInitializer : IHostedService
 {
-    private readonly IClusterClient _clusterClient;
+    private readonly IGrainFactory _grainFactory;
 
-    public PriceFetcherInitializer(IClusterClient clusterClient)
+    public PriceFetcherInitializer(IClusterClient grainFactory)
     {
-        _clusterClient = clusterClient;
+        _grainFactory = grainFactory;
     }
 
-    public Task StartAsync(CancellationToken cancellationToken)
+    public async Task StartAsync(CancellationToken cancellationToken)
     {
-        _clusterClient.GetGrain<IPriceFetcher5MinGrain>(0);
+        var fiveMinute = _grainFactory.GetGrain<IPriceFetcher15MinGrain>(0);
-        return Task.CompletedTask;
+        Console.WriteLine("GrainId : {0}", fiveMinute.GetGrainId());
+
+        // Actually call a method on the grain to activate it
+        // This will trigger OnActivateAsync and register the reminder
+        await fiveMinute.FetchAndPublishPricesAsync();
+
+        Console.WriteLine("PriceFetcher5MinGrain activated and initial fetch completed");
     }
 
     public Task StopAsync(CancellationToken cancellationToken)

src/Managing.Bootstrap/ApiBootstrap.cs

@@ -10,6 +10,7 @@ using Managing.Application.Abstractions.Services;
 using Managing.Application.Accounts;
 using Managing.Application.Agents;
 using Managing.Application.Backtests;
+using Managing.Application.Grains;
 using Managing.Application.ManageBot;
 using Managing.Application.ManageBot.Commands;
 using Managing.Application.MoneyManagements;
@@ -66,13 +67,12 @@ public static class ApiBootstrap
                 .AddWorkers(configuration)
                 .AddFluentValidation()
                 .AddMediatR()
-                .AddHostedServices()
             ;
     }
 
-    private static IServiceCollection AddHostedServices(this IServiceCollection services)
+    public static IServiceCollection AddHostedServices(this IServiceCollection services)
     {
-        // services.AddHostedService<PriceFetcherInitializer>();
+        services.AddHostedService<PriceFetcherInitializer>();
         return services;
     }
 
@@ -333,7 +333,10 @@ public static class ApiBootstrap
                         services.AddTransient<IAccountService, AccountService>();
                         services.AddTransient<ITradingService, TradingService>();
                         services.AddTransient<IMessengerService, MessengerService>();
-                        services.AddTransient<ICandleRepository, CandleRepository>();
+                        // Use Singleton for InfluxDB repositories to prevent connection disposal issues in Orleans grains
+                        services.AddSingleton<IInfluxDbRepository, InfluxDbRepository>();
+                        services.AddSingleton<ICandleRepository, CandleRepository>();
+                        services.AddSingleton<IAgentBalanceRepository, AgentBalanceRepository>();
                     });
             })
             ;
@@ -416,10 +419,10 @@ public static class ApiBootstrap
         services.AddTransient<IWorkerRepository, PostgreSqlWorkerRepository>();
         services.AddTransient<ISynthRepository, PostgreSqlSynthRepository>();
 
-        // InfluxDb Repositories
+        // InfluxDb Repositories - Use Singleton for proper connection management in Orleans grains
-        services.AddTransient<IInfluxDbRepository, InfluxDbRepository>();
+        services.AddSingleton<IInfluxDbRepository, InfluxDbRepository>();
-        services.AddTransient<ICandleRepository, CandleRepository>();
+        services.AddSingleton<ICandleRepository, CandleRepository>();
-        services.AddTransient<IAgentBalanceRepository, AgentBalanceRepository>();
+        services.AddSingleton<IAgentBalanceRepository, AgentBalanceRepository>();
 
         // Cache
         services.AddDistributedMemoryCache();

src/Managing.Infrastructure.Database/InfluxDb/Abstractions/IInfluxDbRepository.cs

@@ -2,7 +2,7 @@
 
 namespace Managing.Infrastructure.Databases.InfluxDb.Abstractions;
 
-public interface IInfluxDbRepository
+public interface IInfluxDbRepository : IDisposable
 {
     string Organization { get; }
 

src/Managing.Infrastructure.Database/InfluxDb/CandleRepository.cs

@@ -111,9 +111,9 @@ public class CandleRepository : ICandleRepository
         return results;
     }
 
-    public async Task InsertCandle(Candle candle)
+    public Task InsertCandle(Candle candle)
     {
-        await _influxDbRepository.WriteAsync(write =>
+        _influxDbRepository.Write(write =>
         {
             PriceDto price = PriceHelpers.Map(candle);
             write.WriteMeasurement(
@@ -121,8 +121,25 @@ public class CandleRepository : ICandleRepository
                 WritePrecision.Ns,
                 _priceBucket,
                 _influxDbRepository.Organization);
-            return Task.CompletedTask;
         });
+        return Task.CompletedTask;
+    }
+
+    public Task InsertCandles(IEnumerable<Candle> candles)
+    {
+        _influxDbRepository.Write(write =>
+        {
+            foreach (var candle in candles)
+            {
+                PriceDto price = PriceHelpers.Map(candle);
+                write.WriteMeasurement(
+                    price,
+                    WritePrecision.Ns,
+                    _priceBucket,
+                    _influxDbRepository.Organization);
+            }
+        });
+        return Task.CompletedTask;
     }
 
     public void Test(Candle candle)

src/Managing.Infrastructure.Database/InfluxDb/InfluxDbRepository.cs

@@ -3,10 +3,17 @@ using Managing.Infrastructure.Databases.InfluxDb.Abstractions;
 
 namespace Managing.Infrastructure.Databases.InfluxDb;
 
-public class InfluxDbRepository : IInfluxDbRepository
+public class InfluxDbRepository : IInfluxDbRepository, IDisposable
 {
     private readonly string _token;
     private readonly string _url;
+    private readonly InfluxDBClient _client;
+    private readonly WriteApi _writeApi;
+    private readonly QueryApi _queryApi;
+    private readonly SemaphoreSlim _writeSemaphore = new SemaphoreSlim(1, 1);
+    private readonly SemaphoreSlim _querySemaphore = new SemaphoreSlim(1, 1);
+    private bool _disposed = false;
+
     public string Organization { get; set; }
 
     public InfluxDbRepository(IInfluxDbSettings settings)
@@ -14,26 +21,85 @@ public class InfluxDbRepository : IInfluxDbRepository
         _token = settings.Token;
         _url = settings.Url;
         Organization = settings.Organization;
+        
+        // Create a single client instance that will be reused
+        _client = new InfluxDBClient(_url, _token);
+        _writeApi = _client.GetWriteApi();
+        _queryApi = _client.GetQueryApi();
     }
 
     public void Write(Action<WriteApi> action)
     {
-        using var client = InfluxDBClientFactory.Create(_url, _token);
+        if (_disposed) throw new ObjectDisposedException(nameof(InfluxDbRepository));
-        using var write = client.GetWriteApi();
+        
-        action(write);
+        _writeSemaphore.Wait();
+        try
+        {
+            action(_writeApi);
+        }
+        finally
+        {
+            _writeSemaphore.Release();
+        }
     }
 
-  public Task WriteAsync(Func<WriteApi, Task> action)
+    public async Task WriteAsync(Func<WriteApi, Task> action)
     {
-        // Get write API asynchronously
+        if (_disposed) throw new ObjectDisposedException(nameof(InfluxDbRepository));
-        using var client = new InfluxDBClient(_url, _token);
+        
-        using var write = client.GetWriteApi();
+        await _writeSemaphore.WaitAsync();
-        return action(write);
+        try
+        {
+            await action(_writeApi);
+        }
+        finally
+        {
+            _writeSemaphore.Release();
+        }
     }
+
     public async Task<T> QueryAsync<T>(Func<QueryApi, Task<T>> action)
     {
-        using var client = InfluxDBClientFactory.Create(_url, _token);
+        if (_disposed) throw new ObjectDisposedException(nameof(InfluxDbRepository));
-        var query = client.GetQueryApi();
+        
-        return await action(query);
+        await _querySemaphore.WaitAsync();
+        try
+        {
+            return await action(_queryApi);
+        }
+        finally
+        {
+            _querySemaphore.Release();
+        }
+    }
+
+    public void Dispose()
+    {
+        if (!_disposed)
+        {
+            try
+            {
+                // Give the WriteApi time to flush any pending writes
+                _writeApi?.Dispose();
+            }
+            catch (Exception)
+            {
+                // Ignore disposal errors
+            }
+            
+            try
+            {
+                _client?.Dispose();
+            }
+            catch (Exception)
+            {
+                // Ignore disposal errors
+            }
+            
+            _writeSemaphore?.Dispose();
+            _querySemaphore?.Dispose();
+            
+            _disposed = true;
+        }
     }
 }