Expose Destructure.AsScalar(Type scalarType) to the configuration

Author: tsimbalar

src/Serilog.Settings.Configuration/Settings/Configuration/ConfigurationReader.cs

@@ -384,6 +384,7 @@ internal static IList<MethodInfo> FindDestructureConfigurationMethods(IReadOnlyC
                 found.Add(GetSurrogateConfigurationMethod<LoggerDestructuringConfiguration, int, object>((c, m, _) => ToMaximumDepth(c, m)));
                 found.Add(GetSurrogateConfigurationMethod<LoggerDestructuringConfiguration, int, object>((c, m, _) => ToMaximumStringLength(c, m)));
                 found.Add(GetSurrogateConfigurationMethod<LoggerDestructuringConfiguration, int, object>((c, m, _) => ToMaximumCollectionCount(c, m)));
+                found.Add(GetSurrogateConfigurationMethod<LoggerDestructuringConfiguration, Type, object>((c, t, _) => AsScalar(c, t)));
             }
 
             return found;
@@ -435,6 +436,9 @@ internal static LoggerConfiguration ToMaximumStringLength(LoggerDestructuringCon
         internal static LoggerConfiguration ToMaximumCollectionCount(LoggerDestructuringConfiguration loggerDestructuringConfiguration, int maximumCollectionCount)
             => loggerDestructuringConfiguration.ToMaximumCollectionCount(maximumCollectionCount);
 
+        internal static LoggerConfiguration AsScalar(LoggerDestructuringConfiguration loggerDestructuringConfiguration, Type scalarType)
+            => loggerDestructuringConfiguration.AsScalar(scalarType);
+
         internal static LoggerConfiguration FromLogContext(LoggerEnrichmentConfiguration loggerEnrichmentConfiguration)
             => loggerEnrichmentConfiguration.FromLogContext();
 

test/Serilog.Settings.Configuration.Tests/ConfigurationSettingsTests.cs

@@ -703,5 +703,53 @@ public void DestructuringWithCustomExtensionMethodIsApplied()
 
             Assert.Equal("\"hardcoded\"", formattedProperty);
         }
+
+        [Fact]
+        public void DestructuringAsScalarIsAppliedWithShortTypeName()
+        {
+            var json = @"{
+                ""Serilog"": {
+                    ""Destructure"": [
+                    {
+                        ""Name"": ""AsScalar"",
+                        ""Args"": { ""scalarType"": ""System.Version"" }
+                    }]
+                }
+            }";
+
+            LogEvent evt = null;
+            var log = ConfigFromJson(json)
+                .WriteTo.Sink(new DelegatingSink(e => evt = e))
+                .CreateLogger();
+
+            log.Information("Destructuring as scalar {@Scalarized}", new Version(2,3));
+            var prop = evt.Properties["Scalarized"];
+
+            Assert.IsType<ScalarValue>(prop);
+        }
+
+        [Fact]
+        public void DestructuringAsScalarIsAppliedWithAssemblyQualifiedName()
+        {
+            var json = $@"{{
+                ""Serilog"": {{
+                    ""Destructure"": [
+                    {{
+                        ""Name"": ""AsScalar"",
+                        ""Args"": {{ ""scalarType"": ""{typeof(Version).AssemblyQualifiedName}"" }}
+                    }}]
+                }}
+            }}";
+
+            LogEvent evt = null;
+            var log = ConfigFromJson(json)
+                .WriteTo.Sink(new DelegatingSink(e => evt = e))
+                .CreateLogger();
+
+            log.Information("Destructuring as scalar {@Scalarized}", new Version(2,3));
+            var prop = evt.Properties["Scalarized"];
+
+            Assert.IsType<ScalarValue>(prop);
+        }
     }
 }