New: Cache goodreads responses

2026-04-25 22:36:59 -04:00 · 2020-06-30 22:38:46 +01:00
parent 50e9225574
commit 3fa605177c
16 changed files with 216 additions and 5 deletions
@@ -0,0 +1,58 @@
+using System;
+using System.Net;
+using NzbDrone.Common.Http;
+
+namespace NzbDrone.Core.Http
+{
+    public interface ICachedHttpResponseService
+    {
+        HttpResponse Get(HttpRequest request, TimeSpan ttl);
+    }
+
+    public class CachedHttpResponseService : ICachedHttpResponseService
+    {
+        private readonly ICachedHttpResponseRepository _repo;
+        private readonly IHttpClient _httpClient;
+
+        public CachedHttpResponseService(ICachedHttpResponseRepository httpResponseRepository,
+                                         IHttpClient httpClient)
+        {
+            _repo = httpResponseRepository;
+            _httpClient = httpClient;
+        }
+
+        public HttpResponse Get(HttpRequest request, TimeSpan ttl)
+        {
+            var cached = _repo.FindByUrl(request.Url.ToString());
+
+            if (cached != null && cached.Expiry > DateTime.UtcNow)
+            {
+                return new HttpResponse(request, new HttpHeader(), cached.Value, (HttpStatusCode)cached.StatusCode);
+            }
+
+            var result = _httpClient.Get(request);
+
+            if (!result.HasHttpError)
+            {
+                if (cached == null)
+                {
+                    cached = new CachedHttpResponse
+                    {
+                        Url = request.Url.ToString(),
+                    };
+                }
+
+                var now = DateTime.UtcNow;
+
+                cached.LastRefresh = now;
+                cached.Expiry = now.Add(ttl);
+                cached.Value = result.Content;
+                cached.StatusCode = (int)result.StatusCode;
+
+                _repo.Upsert(cached);
+            }
+
+            return result;
+        }
+    }
+}