[♻️] PUSH API 리팩토링 진행 중_4 : 대용량 발신 위한 버전 작성 중

Program/V1/Controllers/PushController.cs

@@ -12,13 +12,10 @@ namespace AcaMate.V1.Controllers;
 [ApiExplorerSettings(GroupName = "공통")]
 public class PushController : ControllerBase
 {
-
-    private readonly IWebHostEnvironment _env;
     private readonly ILogger<PushController> _logger;
     private readonly IPushQueue _pushQueue;
-    public PushController(IWebHostEnvironment env, ILogger<PushController> logger, IPushQueue pushQueue)
+    public PushController(ILogger<PushController> logger, IPushQueue pushQueue)
     {
-        _env = env;
         _logger = logger;
         _pushQueue = pushQueue;
     }

Program/V1/Services/InMemoryPushQueue.cs

@@ -0,0 +1,63 @@
+
+using System.Collections.Concurrent;
+using System.Threading;
+using System.Threading.Tasks;
+using AcaMate.V1.Models;
+using Microsoft.Extensions.Hosting;
+
+namespace AcaMate.V1.Services;
+
+public interface IPushQueue
+{
+    void Enqueue(PushRequest request);
+    Task<PushRequest> DequeueAsync(CancellationToken cancellationToken);
+}
+
+public class InMemoryPushQueue: IPushQueue
+{
+    private readonly ConcurrentQueue<PushRequest> _queue = new ConcurrentQueue<PushRequest>();
+    private readonly SemaphoreSlim _signal = new SemaphoreSlim(0);
+
+    public void Enqueue(PushRequest request)
+    {
+        if( request is null ) 
+            throw new ArgumentNullException(nameof(request));
+        _queue.Enqueue(request);
+        _signal.Release();
+    }
+
+    public async Task<PushRequest> DequeueAsync(CancellationToken cancellationToken)
+    {
+        await _signal.WaitAsync(cancellationToken);
+        _queue.TryDequeue(out var request);
+        return request;
+    }
+}
+
+public class PushBackgroundService : BackgroundService
+{
+    private readonly IPushQueue _queue;
+    private readonly IApnsPushService _pushService;
+
+    public PushBackgroundService(IPushQueue queue, IApnsPushService pushService)
+    {
+        _queue = queue;
+        _pushService = pushService;
+    }
+
+    protected override async Task ExecuteAsync(CancellationToken stoppingToken)
+    {
+        while (!stoppingToken.IsCancellationRequested)
+        {
+            var pushRequest = await _queue.DequeueAsync(stoppingToken);
+            try
+            {
+                await _pushService.SendPushNotificationAsync(pushRequest.deviceToken, pushRequest.payload);
+            }
+            catch (Exception ex)
+            {
+                Console.WriteLine($"푸시 전송 실패: {ex.Message}");
+            }
+        }
+    }
+}