Add Role based grain placement

src/Managing.Application/Grains/BundleBacktestGrain.cs

@@ -1,6 +1,7 @@
 using System.Text.Json;
 using Managing.Application.Abstractions.Grains;
 using Managing.Application.Abstractions.Services;
+using Managing.Application.Orleans;
 using Managing.Core;
 using Managing.Domain.Accounts;
 using Managing.Domain.Backtests;
@@ -18,8 +19,10 @@ namespace Managing.Application.Grains;
 /// Stateless worker grain for processing bundle backtest requests
 /// Uses the bundle request ID as the primary key (Guid)
 /// Implements IRemindable for automatic retry of failed bundles
+/// Uses custom compute placement with random fallback.
 /// </summary>
 [StatelessWorker]
+[TradingPlacement] // Use custom compute placement with random fallback
 public class BundleBacktestGrain : Grain, IBundleBacktestGrain, IRemindable
 {
     private readonly ILogger<BundleBacktestGrain> _logger;

src/Managing.Application/Grains/CandleStoreGrain.cs

@@ -1,5 +1,6 @@
 using Managing.Application.Abstractions.Grains;
 using Managing.Application.Abstractions.Repositories;
+using Managing.Application.Orleans;
 using Managing.Domain.Candles;
 using Microsoft.Extensions.Logging;
 using Orleans.Streams;
@@ -10,7 +11,9 @@ namespace Managing.Application.Grains;
 /// <summary>
 /// Grain for managing in-memory historical candle data with Orleans state persistence.
 /// Subscribes to price streams and maintains a rolling window of 500 candles.
+/// Uses custom trading placement with load balancing and built-in fallback.
 /// </summary>
+[TradingPlacement] // Use custom trading placement with load balancing
 public class CandleStoreGrain : Grain, ICandleStoreGrain, IAsyncObserver<Candle>
 {
     private readonly IPersistentState<CandleStoreGrainState> _state;

src/Managing.Application/Grains/GeneticBacktestGrain.cs

@@ -1,5 +1,6 @@
 using Managing.Application.Abstractions.Grains;
 using Managing.Application.Abstractions.Services;
+using Managing.Application.Orleans;
 using Managing.Core;
 using Managing.Domain.Accounts;
 using Managing.Domain.Backtests;
@@ -12,8 +13,10 @@ namespace Managing.Application.Grains;
 /// <summary>
 /// Stateless worker grain for processing genetic backtest requests.
 /// Uses the genetic request ID (string) as the primary key.
+/// Uses custom compute placement with random fallback.
 /// </summary>
 [StatelessWorker]
+[TradingPlacement] // Use custom compute placement with random fallback
 public class GeneticBacktestGrain : Grain, IGeneticBacktestGrain
 {
     private readonly ILogger<GeneticBacktestGrain> _logger;

src/Managing.Application/Grains/PlatformSummaryGrain.cs

@@ -2,6 +2,7 @@ using Managing.Application.Abstractions;
 using Managing.Application.Abstractions.Grains;
 using Managing.Application.Abstractions.Models;
 using Managing.Application.Abstractions.Services;
+using Managing.Application.Orleans;
 using Managing.Domain.Bots;
 using Microsoft.Extensions.Logging;
 using static Managing.Common.Enums;
@@ -10,7 +11,9 @@ namespace Managing.Application.Grains;
 
 /// <summary>
 /// Grain for managing platform-wide summary metrics with real-time updates and periodic snapshots
+/// Uses custom trading placement with load balancing and built-in fallback.
 /// </summary>
+[TradingPlacement] // Use custom trading placement with load balancing
 public class PlatformSummaryGrain : Grain, IPlatformSummaryGrain, IRemindable
 {
     private readonly IPersistentState<PlatformSummaryGrainState> _state;

src/Managing.Application/Grains/PriceFetcherGrain.cs

@@ -1,6 +1,7 @@
 using Managing.Application.Abstractions.Grains;
 using Managing.Application.Abstractions.Repositories;
 using Managing.Application.Abstractions.Services;
+using Managing.Application.Orleans;
 using Managing.Application.Shared;
 using Managing.Common;
 using Managing.Domain.Accounts;
@@ -15,7 +16,9 @@ namespace Managing.Application.Grains;
 /// Grain for fetching price data from external APIs and publishing to Orleans streams.
 /// This grain runs periodically and processes all exchange/ticker combinations for a specific timeframe.
 /// The timeframe is passed as the PrimaryKeyString to identify which timeframe this grain handles.
+/// Uses custom trading placement with load balancing and built-in fallback.
 /// </summary>
+[TradingPlacement] // Use custom trading placement with load balancing
 public class PriceFetcherGrain : Grain, IPriceFetcherGrain, IRemindable
 {
     private readonly ILogger<PriceFetcherGrain> _logger;