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AkkaExchangeHub.cs
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AkkaExchangeHub.cs
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using System;
using System.Threading.Tasks;
using AkkaExchange.Orders;
using AkkaExchange.Client.Extensions;
using Microsoft.AspNetCore.SignalR;
using System.Reactive.Linq;
using Microsoft.Extensions.Logging;
using AkkaExchange.Shared.Extensions;
using AkkaExchange.Orders.Events;
namespace AkkaExchange.Web
{
public class AkkaExchangeHub : Hub
{
private readonly HubSubscriptionCollection _subscriptions;
private readonly HubClientCollection _clients;
private readonly AkkaExchange _akkaExchange;
private readonly ILogger<AkkaExchangeHub> _logger;
public AkkaExchangeHub(
HubSubscriptionCollection subscriptions,
HubClientCollection clients,
AkkaExchange akkaExchange,
ILogger<AkkaExchangeHub> logger)
{
_subscriptions = subscriptions;
_clients = clients;
_akkaExchange = akkaExchange;
_logger = logger;
}
public override async Task OnConnectedAsync()
{
_logger.LogInformation($"OnConnect ConnectionId: {Context.ConnectionId}");
var client = await _clients.GetClient(Context.ConnectionId);
var observable = client.Events
.Merge(
client.State.Cast<Message>())
.Merge(
client.Errors.Cast<Message>())
.Merge(
_akkaExchange.Queries.Clients.ClientManagerState.NumberOfConnectedClientsQuery().Cast<Message>())
.Merge(
_akkaExchange.Queries.Orders.OrderBookState.Cast<Message>());
_subscriptions.TryAdd(Context.ConnectionId, observable);
await base.OnConnectedAsync();
}
public override async Task OnDisconnectedAsync(Exception exception)
{
_logger.LogInformation($"OnDisconnect ConnectionId: {Context.ConnectionId}");
await _clients.DisposeClient(Context.ConnectionId);
_subscriptions.TryDispose(Context.ConnectionId);
await base.OnDisconnectedAsync(exception);
}
public async Task Bid(decimal price, decimal amount)
{
var client = await _clients.GetClient(Context.ConnectionId);
client.NewOrder(price, amount, OrderSide.Bid);
}
public async Task Ask(decimal price, decimal amount)
{
var client = await _clients.GetClient(Context.ConnectionId);
client.NewOrder(price, amount, OrderSide.Ask);
}
}
}