Move a small part of current

src/Umbraco.Abstractions/Composing/Current.cs

@@ -0,0 +1,58 @@
+using System;
+using Umbraco.Core.Logging;
+
+namespace Umbraco.Core.Composing
+{
+    /// <summary>
+    /// Provides a static service locator for most singletons.
+    /// </summary>
+    /// <remarks>
+    /// <para>This class is initialized with the container in UmbracoApplicationBase,
+    /// right after the container is created in UmbracoApplicationBase.HandleApplicationStart.</para>
+    /// <para>Obviously, this is a service locator, which some may consider an anti-pattern. And yet,
+    /// practically, it works.</para>
+    /// </remarks>
+    public static class CurrentCore
+    {
+        private static IFactory _factory;
+
+        private static ILogger _logger;
+        private static IProfiler _profiler;
+        private static IProfilingLogger _profilingLogger;
+
+        /// <summary>
+        /// Gets or sets the factory.
+        /// </summary>
+        public static IFactory Factory
+        {
+            get
+            {
+                if (_factory == null) throw new InvalidOperationException("No factory has been set.");
+                return _factory;
+            }
+            set
+            {
+                if (_factory != null) throw new InvalidOperationException("A factory has already been set.");
+               // if (_configs != null) throw new InvalidOperationException("Configs are unlocked.");
+                _factory = value;
+            }
+        }
+
+        internal static bool HasFactory => _factory != null;
+
+        #region Getters
+
+        public static ILogger Logger
+            => _logger ?? (_logger = _factory?.TryGetInstance<ILogger>() ?? throw new Exception("TODO Fix")); //?? new DebugDiagnosticsLogger(new MessageTemplates()));
+
+        public static IProfiler Profiler
+            => _profiler ?? (_profiler = _factory?.TryGetInstance<IProfiler>()
+                                         ?? new LogProfiler(Logger));
+
+        public static IProfilingLogger ProfilingLogger
+            => _profilingLogger ?? (_profilingLogger = _factory?.TryGetInstance<IProfilingLogger>())
+               ?? new ProfilingLogger(Logger, Profiler);
+
+        #endregion
+    }
+}