Added ThreadSafe-attribute for LayoutRenderer to optimize async Precalculate

NLog.Web.AspNetCore.Tests/LayoutRenderers/AspNetRequestValueLayoutRendererTests.cs

@@ -1,25 +1,24 @@
-#if !ASP_NET_CORE
-//TODO test .NET Core
-using System.Collections.Specialized;
-using System.IO;
+using System.IO;
 #if !ASP_NET_CORE
+using System.Collections.Specialized;
 using System.Web;
 using System.Web.Routing;
 using System.Web.SessionState;
 #else
+using Microsoft.AspNetCore.Http;
 using Microsoft.Extensions.Primitives;
 using HttpContextBase = Microsoft.AspNetCore.Http.HttpContext;
 #endif
 using NLog.Common;
-using NLog.Config;
 using NLog.Web.LayoutRenderers;
 using NSubstitute;
 using NSubstitute.ExceptionExtensions;
 using Xunit;
+using System.Collections.Generic;
 
 namespace NLog.Web.Tests.LayoutRenderers
 {
-    public class AspNetRequestValueLayoutRendererTests : TestBase
+    public class AspNetRequestValueLayoutRendererTests : TestInvolvingAspNetHttpContext
     {
         [Fact]
         public void NullHttpContextRendersEmptyString()
@@ -31,6 +30,7 @@ public void NullHttpContextRendersEmptyString()
             Assert.Empty(result);
         }
 
+#if !ASP_NET_CORE
         [Fact]
         public void NullRequestRendersEmptyStringWithoutLoggingError()
         {
@@ -50,6 +50,7 @@ public void NullRequestRendersEmptyStringWithoutLoggingError()
             Assert.Empty(result);
             Assert.True(string.IsNullOrEmpty(internalLog.ToString()));
         }
+#endif
 
         public class ItemTests
         {
@@ -86,7 +87,11 @@ public void KeyFoundRendersValue()
             {
                 var expectedResult = "value";
                 var httpContext = Substitute.For<HttpContextBase>();
+#if !ASP_NET_CORE
                 httpContext.Request["key"].Returns(expectedResult);
+#else
+                httpContext.Request.HttpContext.Items.Returns(new Dictionary<object, object>() { { "key", expectedResult } });
+#endif
 
                 var renderer = new AspNetRequestValueLayoutRenderer();
                 renderer.HttpContextAccessor = new FakeHttpContextAccessor(httpContext);
@@ -133,7 +138,12 @@ public void KeyFoundRendersValue()
             {
                 var expectedResult = "value";
                 var httpContext = Substitute.For<HttpContextBase>();
+#if !ASP_NET_CORE
                 httpContext.Request.QueryString.Returns(new NameValueCollection { {"key", expectedResult} });
+#else
+                var queryCollection = new Microsoft.AspNetCore.Http.Internal.QueryCollection(new Dictionary<string, StringValues>() { { "key", expectedResult } });
+                httpContext.Request.Query.Returns(queryCollection);
+#endif
 
                 var renderer = new AspNetRequestValueLayoutRenderer();
                 renderer.HttpContextAccessor = new FakeHttpContextAccessor(httpContext);
@@ -180,7 +190,12 @@ public void KeyFoundRendersValue()
             {
                 var expectedResult = "value";
                 var httpContext = Substitute.For<HttpContextBase>();
+#if !ASP_NET_CORE
                 httpContext.Request.Headers.Returns(new NameValueCollection { { "key", expectedResult } });
+#else
+                var headerDictionary = new HeaderDictionary(new Dictionary<string, StringValues>() { { "key", expectedResult } });
+                httpContext.Request.Headers.Returns(headerDictionary);
+#endif
 
                 var renderer = new AspNetRequestValueLayoutRenderer();
                 renderer.HttpContextAccessor = new FakeHttpContextAccessor(httpContext);
@@ -227,7 +242,13 @@ public void KeyFoundRendersValue()
             {
                 var expectedResult = "value";
                 var httpContext = Substitute.For<HttpContextBase>();
+#if !ASP_NET_CORE
                 httpContext.Request.Form.Returns(new NameValueCollection { { "key", expectedResult } });
+#else
+                httpContext.Request.HasFormContentType.Returns(true);
+                var formCollection = new FormCollection(new Dictionary<string, StringValues>{ { "key", expectedResult } });
+                httpContext.Request.Form.Returns(formCollection);
+#endif
 
                 var renderer = new AspNetRequestValueLayoutRenderer();
                 renderer.HttpContextAccessor = new FakeHttpContextAccessor(httpContext);
@@ -239,6 +260,7 @@ public void KeyFoundRendersValue()
             }
         }
 
+#if !ASP_NET_CORE
         public class ServerVariablesTests
         {
             [Fact]
@@ -285,7 +307,7 @@ public void KeyFoundRendersValue()
                 Assert.Equal(expectedResult, result);
             }
         }
-
+#endif
         public class CookieTests
         {
             [Fact]
@@ -321,7 +343,12 @@ public void KeyFoundRendersValue()
             {
                 var expectedResult = "value";
                 var httpContext = Substitute.For<HttpContextBase>();
+#if !ASP_NET_CORE
                 httpContext.Request.Cookies.Returns(new HttpCookieCollection {new HttpCookie("key", expectedResult) });
+#else
+                var cookieCollection = new Microsoft.AspNetCore.Http.Internal.RequestCookieCollection(new Dictionary<string, string>{ { "key", expectedResult } });
+                httpContext.Request.Cookies.Returns(cookieCollection);
+#endif
 
                 var renderer = new AspNetRequestValueLayoutRenderer();
                 renderer.HttpContextAccessor = new FakeHttpContextAccessor(httpContext);
@@ -333,5 +360,4 @@ public void KeyFoundRendersValue()
             }
         }
     }
-}
-#endif
+}

NLog.Web.AspNetCore/LayoutRenderers/AspNetAppBasePathLayoutRenderer.cs

@@ -7,6 +7,7 @@
 #else
 using System.Web.Hosting;
 #endif
+using NLog.Config;
 using NLog.LayoutRenderers;
 
 namespace NLog.Web.LayoutRenderers
@@ -21,6 +22,8 @@ namespace NLog.Web.LayoutRenderers
     /// </summary>
 #endif
     [LayoutRenderer("aspnet-appbasepath")]
+    [ThreadAgnostic]
+    [ThreadSafe]
     public class AspNetAppBasePathLayoutRenderer : LayoutRenderer
     {
 #if ASP_NET_CORE

NLog.Web.AspNetCore/LayoutRenderers/AspNetApplicationValueLayoutRenderer.cs

@@ -35,6 +35,7 @@ namespace NLog.Web.LayoutRenderers
     /// </code>
     /// </example>
     [LayoutRenderer("aspnet-application")]
+    [ThreadSafe]
     public class AspNetApplicationValueLayoutRenderer : AspNetLayoutRendererBase
     {
         /// <summary>

NLog.Web.AspNetCore/LayoutRenderers/AspNetEnvironmentLayoutRenderer.cs

@@ -3,6 +3,7 @@
 using System.Text;
 using Microsoft.AspNetCore.Hosting;
 using Microsoft.Extensions.DependencyInjection;
+using NLog.Config;
 using NLog.LayoutRenderers;
 using NLog.Web.DependencyInjection;
 
@@ -13,6 +14,8 @@ namespace NLog.Web.LayoutRenderers
     /// Rendering development environment. <see cref="IHostingEnvironment"/>
     /// </summary>
     [LayoutRenderer("aspnet-environment")]
+    [ThreadAgnostic]
+    [ThreadSafe]
     public class AspNetEnvironmentLayoutRenderer : LayoutRenderer
     {
         private static IHostingEnvironment _hostingEnvironment;

NLog.Web.AspNetCore/LayoutRenderers/AspNetItemValueLayoutRenderer.cs

@@ -40,6 +40,7 @@ namespace NLog.Web.LayoutRenderers
     /// </code>
     /// </example>
     [LayoutRenderer("aspnet-item")]
+    [ThreadSafe]
     public class AspNetItemValueLayoutRenderer : AspNetLayoutRendererBase
     {
         /// <summary>

NLog.Web.AspNetCore/LayoutRenderers/AspNetMvcActionRenderer.cs

@@ -1,4 +1,3 @@
-using NLog.LayoutRenderers;
 using System.Text;
 #if !ASP_NET_CORE
 using System.Web.Routing;
@@ -8,6 +7,8 @@
 using Microsoft.AspNetCore.Http;
 using HttpContextBase = Microsoft.AspNetCore.Http.HttpContext;
 #endif
+using NLog.Config;
+using NLog.LayoutRenderers;
 
 namespace NLog.Web.LayoutRenderers
 {
@@ -23,6 +24,7 @@ namespace NLog.Web.LayoutRenderers
     /// </code>
     /// </example>
     [LayoutRenderer("aspnet-mvc-action")]
+    [ThreadSafe]
     public class AspNetMvcActionRenderer : AspNetMvcLayoutRendererBase
     {
         /// <summary>

NLog.Web.AspNetCore/LayoutRenderers/AspNetMvcControllerRenderer.cs

@@ -1,4 +1,3 @@
-using NLog.LayoutRenderers;
 using System.Text;
 #if !ASP_NET_CORE
 using System.Web.Routing;
@@ -8,7 +7,8 @@
 using Microsoft.AspNetCore.Routing;
 using Microsoft.AspNetCore.Http;
 #endif
-
+using NLog.Config;
+using NLog.LayoutRenderers;
 
 namespace NLog.Web.LayoutRenderers
 {
@@ -24,6 +24,7 @@ namespace NLog.Web.LayoutRenderers
     /// </code>
     /// </example>
     [LayoutRenderer("aspnet-mvc-controller")]
+    [ThreadSafe]
     public class AspNetMvcControllerRenderer : AspNetMvcLayoutRendererBase
     {
         /// <summary>

NLog.Web.AspNetCore/LayoutRenderers/AspNetRequestContentTypeLayoutRenderer.cs

@@ -1,5 +1,6 @@
 #if ASP_NET_CORE
 using System.Text;
+using NLog.Config;
 using NLog.LayoutRenderers;
 using NLog.Web.Internal;
 
@@ -14,6 +15,7 @@ namespace NLog.Web.LayoutRenderers
     /// </code>
     /// </example>
     [LayoutRenderer("aspnet-request-contenttype")]
+    [ThreadSafe]
     public class AspNetRequestContentTypeLayoutRenderer : AspNetLayoutRendererBase
     {
         /// <summary>

NLog.Web.AspNetCore/LayoutRenderers/AspNetRequestCookieLayoutRenderer.cs

@@ -7,9 +7,9 @@
 #else
 using Microsoft.AspNetCore.Http;
 #endif
+using NLog.Config;
 using NLog.LayoutRenderers;
 using NLog.Web.Enums;
-
 using NLog.Web.Internal;
 
 namespace NLog.Web.LayoutRenderers
@@ -25,6 +25,7 @@ namespace NLog.Web.LayoutRenderers
     /// </code>
     /// </example>
     [LayoutRenderer("aspnet-request-cookie")]
+    [ThreadSafe]
     public class AspNetRequestCookieLayoutRenderer : AspNetLayoutMultiValueRendererBase
     {
         /// <summary>
@@ -52,62 +53,50 @@ protected override void DoAppend(StringBuilder builder, LogEventInfo logEvent)
         }
 
 #if !ASP_NET_CORE
-
         private IEnumerable<KeyValuePair<string, string>> GetCookies(HttpCookieCollection cookies)
         {
-            var cookieNames = CookieNames;
-            if (cookieNames != null)
+            foreach (var cookieName in CookieNames)
             {
-                foreach (var cookieName in cookieNames)
+                var httpCookie = cookies[cookieName];
+                if (httpCookie == null)
                 {
-                    var httpCookie = cookies[cookieName];
-                    if (httpCookie == null)
-                    {
-                        continue;
-                    }
+                    continue;
+                }
 
-                    if (OutputFormat == AspNetRequestLayoutOutputFormat.Json)
+                if (OutputFormat == AspNetRequestLayoutOutputFormat.Json)
+                {
+                    // Split multi-valued cookie, as allowed for in the HttpCookie API for backwards compatibility with classic ASP
+                    var isFirst = true;
+                    foreach (var multiValueKey in httpCookie.Values.AllKeys)
                     {
-                        // Split multi-valued cookie, as allowed for in the HttpCookie API for backwards compatibility with classic ASP
-                        var isFirst = true;
-                        foreach (var multiValueKey in httpCookie.Values.AllKeys)
+                        var cookieKey = multiValueKey;
+                        if (isFirst)
                         {
-                            var cookieKey = multiValueKey;
-                            if (isFirst)
-                            {
-                                cookieKey = cookieName;
-                                isFirst = false;
-                            }
-                            yield return new KeyValuePair<string, string>(cookieKey, httpCookie.Values[multiValueKey]);
+                            cookieKey = cookieName;
+                            isFirst = false;
                         }
-                    }
-                    else
-                    {
-                        yield return new KeyValuePair<string, string>(cookieName, httpCookie.Value);
+                        yield return new KeyValuePair<string, string>(cookieKey, httpCookie.Values[multiValueKey]);
                     }
                 }
+                else
+                {
+                    yield return new KeyValuePair<string, string>(cookieName, httpCookie.Value);
+                }
             }
         }
-
 #else
-
         private IEnumerable<KeyValuePair<string, string>> GetCookies(IRequestCookieCollection cookies)
         {
-            var cookieNames = CookieNames;
-            if (cookieNames != null)
+            foreach (var cookieName in CookieNames)
             {
-                foreach (var cookieName in cookieNames)
+                if (!cookies.TryGetValue(cookieName, out var cookieValue))
                 {
-                    if (!cookies.TryGetValue(cookieName, out var cookieValue))
-                    {
-                        continue;
-                    }
-
-                    yield return new KeyValuePair<string, string>(cookieName, cookieValue);
+                    continue;
                 }
+
+                yield return new KeyValuePair<string, string>(cookieName, cookieValue);
             }
         }
-
 #endif
     }
 }