Dependency Injection extensions

2026-07-22 17:19:30 +00:00 · 2021-07-10 10:59:27 +03:00
parent 5aaa0d318a
commit 7a764a5929
40 changed files with 1410 additions and 8 deletions
@@ -0,0 +1,50 @@
+using Microsoft.Extensions.Logging;
+using Slim.Resolvers;
+using System.Linq;
+
+namespace System.Windows.Extensions.Logging
+{
+    public sealed class LoggerResolver : IDependencyResolver
+    {
+        public bool CanResolve(Type type)
+        {
+            if (type.IsGenericType && type.GetGenericTypeDefinition() == typeof(ILogger<>) ||
+                type == typeof(ILogger))
+            {
+                return true;
+            }
+
+            return false;
+        }
+
+        public object Resolve(Slim.IServiceProvider serviceProvider, Type type)
+        {
+            if (type.IsGenericType && type.GetGenericTypeDefinition() == typeof(ILogger<>))
+            {
+                return ResolveScopedLogger(serviceProvider, type);
+            }
+            else if (type == typeof(ILogger))
+            {
+                return ResolveLogger(serviceProvider, type);
+            }
+            else
+            {
+                throw new InvalidOperationException($"{nameof(LoggerResolver)} cannot resolve an object of type {type.Name}");
+            }
+        }
+
+        private static object ResolveScopedLogger(Slim.IServiceProvider serviceProvider, Type type)
+        {
+            var loggerFactory = serviceProvider.GetService<ILoggerFactory>();
+            var categoryTypes = type.GetGenericArguments();
+            var createLoggerMethod = typeof(LoggerFactoryExtensions).GetMethods().Where(m => m.IsGenericMethodDefinition && m.Name == nameof(LoggerFactoryExtensions.CreateLogger)).First();
+            return createLoggerMethod.MakeGenericMethod(categoryTypes.First()).Invoke(null, new object[] { loggerFactory });
+        }
+
+        private static object ResolveLogger(Slim.IServiceProvider serviceProvider, Type type)
+        {
+            var loggerFactory = serviceProvider.GetService<ILoggerFactory>();
+            return loggerFactory.CreateLogger(string.Empty);
+        }
+    }
+}