Ądded support for virtual memory usage

README.md

@@ -26,4 +26,19 @@ And finally utilise the token in your logging template:
 var template = "{MemoryUsage}";
 ```
 
+You can also enrich your logging configuration for virtual memory:
+
+```csharp
+new LoggerConfiguration()
+    .Enrich.WithVirtualMemoryUsage();
+```
+
+And finally utilise the token in your logging template:
+
+```csharp
+var template = "{VirtualMemoryUsage}";
+```
+
+Please notice VirtualMemoryUsage is not available for .NET Standard 1.3 due to Process API unavailability.
+
 Copyright © 2017 Josh Schreuder - Provided under the [Apache License, Version 2.0](http://apache.org/licenses/LICENSE-2.0.html).

src/Serilog.Enrichers.Memory/Enrichers/VirtualMemoryUsageEnricher.cs

@@ -0,0 +1,50 @@
+// Copyright 2017 Josh Schreuder
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+using System.Diagnostics;
+using Serilog.Core;
+using Serilog.Events;
+
+namespace Serilog.Enrichers
+{
+    /// <summary>
+    /// Enriches log events with a MemoryUsage property containing an estimation of the current process' virtual memory usage in bytes.
+    /// </summary>
+    public class VirtualMemoryUsageEnricher : ILogEventEnricher
+    {
+        /// <summary>
+        /// The property name added to enriched log events.
+        /// </summary>
+        public const string MemoryUsagePropertyName = "VirtualMemoryUsage";
+
+        /// <summary>
+        /// Enrich the log event.
+        /// </summary>
+        /// <param name="logEvent">The log event to enrich.</param>
+        /// <param name="propertyFactory">Factory for creating new properties to add to the event.</param>
+        public void Enrich(LogEvent logEvent, ILogEventPropertyFactory propertyFactory)
+        {
+            logEvent.AddPropertyIfAbsent(propertyFactory.CreateProperty(MemoryUsagePropertyName, GetProcessVirtualMemoryUsage()));
+        }
+
+        private long GetProcessVirtualMemoryUsage()
+        {
+#if NETSTANDARD1_3
+            return -1;
+#else
+            return Process.GetCurrentProcess().VirtualMemorySize64;
+#endif // NETSTANDARD1_3
+        }
+    }
+}

src/Serilog.Enrichers.Memory/ProcessLoggerConfigurationExtensions.cs

@@ -36,5 +36,17 @@ public static LoggerConfiguration WithMemoryUsage(
             if (enrichmentConfiguration == null) throw new ArgumentNullException(nameof(enrichmentConfiguration));
             return enrichmentConfiguration.With<MemoryUsageEnricher>();
         }
+
+        /// <summary>
+        /// Enrich log events with virtual memory usage/>.
+        /// </summary>
+        /// <param name="enrichmentConfiguration">Logger enrichment configuration.</param>
+        /// <returns>Configuration object allowing method chaining.</returns>
+        public static LoggerConfiguration WithVirtualMemoryUsage(
+           this LoggerEnrichmentConfiguration enrichmentConfiguration)
+        {
+            if (enrichmentConfiguration == null) throw new ArgumentNullException(nameof(enrichmentConfiguration));
+            return enrichmentConfiguration.With<VirtualMemoryUsageEnricher>();
+        }
     }
 }