Added EventId hydration if it was defined

src/Serilog.Extensions.Logging/Extensions/Logging/LoggerProviderCollectionSink.cs

@@ -13,6 +13,7 @@
 // limitations under the License.
 
 using System;
+using Microsoft.Extensions.Logging;
 using Serilog.Core;
 using Serilog.Events;
 
@@ -30,13 +31,26 @@ public LoggerProviderCollectionSink(LoggerProviderCollection providers)
         public void Emit(LogEvent logEvent)
         {
             string categoryName = null;
+            EventId eventId = default;
 
             if (logEvent.Properties.TryGetValue("SourceContext", out var sourceContextProperty) &&
                 sourceContextProperty is ScalarValue sourceContextValue &&
                 sourceContextValue.Value is string sourceContext)
             {
                 categoryName = sourceContext;
             }
+            if (logEvent.Properties.TryGetValue("EventId", out var eventIdPropertyValue) && eventIdPropertyValue is StructureValue structuredEventId)
+            {
+                string name = null;
+                var id = 0;
+                foreach (var item in structuredEventId.Properties)
+                {
+                    if (item.Name == "Id" && item.Value is ScalarValue sv && sv.Value is int i) id = i;
+                    if (item.Name == "Name" && item.Value is ScalarValue sv2 && sv2.Value is string s) name = s;
+                }
+
+                eventId = new EventId(id, name);
+            }
 
             var level = LevelConvert.ToExtensionsLevel(logEvent.Level);
             var slv = new SerilogLogValues(logEvent.MessageTemplate, logEvent.Properties);
@@ -47,7 +61,7 @@ sourceContextProperty is ScalarValue sourceContextValue &&
 
                 logger.Log(
                     level,
-                    default, 
+                    eventId,
                     slv,
                     logEvent.Exception,
                     (s, e) => s.ToString());

test/Serilog.Extensions.Logging.Tests/LoggerProviderCollectionSinkTests.cs

@@ -0,0 +1,85 @@
+// Copyright (c) .NET Foundation. All rights reserved.
+// Licensed under the Apache License, Version 2.0. See License.txt in the project root for license information.
+
+using System;
+using Microsoft.Extensions.Logging;
+using Serilog.Extensions.Logging.Tests.Support;
+using Xunit;
+
+namespace Serilog.Extensions.Logging.Tests
+{
+    public class LoggerProviderCollectionSinkTests
+    {
+        const string Name = "test";
+        const string TestMessage = "This is a test";
+
+        static Tuple<SerilogLogger, ExtensionsProvider> SetUp(LogLevel logLevel)
+        {
+            var providers = new LoggerProviderCollection();
+            var provider = new ExtensionsProvider(logLevel);
+            providers.AddProvider(provider);
+            var serilogLogger = new LoggerConfiguration()
+                .WriteTo.Providers(providers)
+                .MinimumLevel.Is(LevelConvert.ToSerilogLevel(logLevel))
+                .CreateLogger();
+
+            var logger = (SerilogLogger)new SerilogLoggerProvider(serilogLogger).CreateLogger(Name);
+
+            return new Tuple<SerilogLogger, ExtensionsProvider>(logger, provider);
+        }
+
+        [Fact]
+        public void LogsCorrectLevel()
+        {
+            var (logger, sink) = SetUp(LogLevel.Trace);
+
+            logger.Log(LogLevel.Trace, 0, TestMessage, null, null);
+            logger.Log(LogLevel.Debug, 0, TestMessage, null, null);
+            logger.Log(LogLevel.Information, 0, TestMessage, null, null);
+            logger.Log(LogLevel.Warning, 0, TestMessage, null, null);
+            logger.Log(LogLevel.Error, 0, TestMessage, null, null);
+            logger.Log(LogLevel.Critical, 0, TestMessage, null, null);
+
+            Assert.Equal(6, sink.Writes.Count);
+            Assert.Equal(LogLevel.Trace, sink.Writes[0].logLevel);
+            Assert.Equal(LogLevel.Debug, sink.Writes[1].logLevel);
+            Assert.Equal(LogLevel.Information, sink.Writes[2].logLevel);
+            Assert.Equal(LogLevel.Warning, sink.Writes[3].logLevel);
+            Assert.Equal(LogLevel.Error, sink.Writes[4].logLevel);
+            Assert.Equal(LogLevel.Critical, sink.Writes[5].logLevel);
+        }
+
+        [Fact]
+        public void LogsCorrectEventId()
+        {
+            var (logger, sink) = SetUp(LogLevel.Trace);
+
+            logger.Log(LogLevel.Trace, new EventId(1, nameof(LogLevel.Trace)), TestMessage, null, null);
+            logger.Log(LogLevel.Debug, new EventId(2, nameof(LogLevel.Debug)), TestMessage, null, null);
+            logger.Log(LogLevel.Information, new EventId(3, nameof(LogLevel.Information)), TestMessage, null, null);
+            logger.Log(LogLevel.Warning, new EventId(4, nameof(LogLevel.Warning)), TestMessage, null, null);
+            logger.Log(LogLevel.Error, new EventId(5, nameof(LogLevel.Error)), TestMessage, null, null);
+            logger.Log(LogLevel.Critical, new EventId(6, nameof(LogLevel.Critical)), TestMessage, null, null);
+
+            Assert.Equal(6, sink.Writes.Count);
+
+            Assert.Equal(1, sink.Writes[0].eventId.Id);
+            Assert.Equal(nameof(LogLevel.Trace), sink.Writes[0].eventId.Name);
+
+            Assert.Equal(2, sink.Writes[1].eventId.Id);
+            Assert.Equal(nameof(LogLevel.Debug), sink.Writes[1].eventId.Name);
+
+            Assert.Equal(3, sink.Writes[2].eventId.Id);
+            Assert.Equal(nameof(LogLevel.Information), sink.Writes[2].eventId.Name);
+
+            Assert.Equal(4, sink.Writes[3].eventId.Id);
+            Assert.Equal(nameof(LogLevel.Warning), sink.Writes[3].eventId.Name);
+
+            Assert.Equal(5, sink.Writes[4].eventId.Id);
+            Assert.Equal(nameof(LogLevel.Error), sink.Writes[4].eventId.Name);
+
+            Assert.Equal(6, sink.Writes[5].eventId.Id);
+            Assert.Equal(nameof(LogLevel.Critical), sink.Writes[5].eventId.Name);
+        }
+    }
+}

test/Serilog.Extensions.Logging.Tests/Support/ExtensionsProvider.cs

@@ -0,0 +1,45 @@
+// Copyright (c) .NET Foundation. All rights reserved.
+// Licensed under the Apache License, Version 2.0. See License.txt in the project root for license information.
+
+using System;
+using System.Collections.Generic;
+using Microsoft.Extensions.Logging;
+using Serilog.Events;
+
+namespace Serilog.Extensions.Logging.Tests.Support
+{
+    public class ExtensionsProvider : ILoggerProvider, Microsoft.Extensions.Logging.ILogger
+    {
+        private readonly LogLevel enabledLevel;
+        public List<(LogLevel logLevel, EventId eventId, object state, Exception exception, string message)> Writes { get; set; } = new List<(LogLevel logLevel, EventId eventId, object state, Exception exception, string message)>();
+
+        public ExtensionsProvider(LogLevel enabledLevel)
+        {
+            this.enabledLevel = enabledLevel;
+        }
+
+        public Microsoft.Extensions.Logging.ILogger CreateLogger(string categoryName)
+        {
+            return this;
+        }
+
+        public IDisposable BeginScope<TState>(TState state)
+        {
+            return this;
+        }
+
+        public bool IsEnabled(LogLevel logLevel)
+        {
+            return enabledLevel <= logLevel;
+        }
+
+        public void Log<TState>(LogLevel logLevel, EventId eventId, TState state, Exception exception, Func<TState, Exception, string> formatter)
+        {
+            Writes.Add((logLevel, eventId, state, exception, formatter(state, exception)));
+        }
+
+        public void Dispose()
+        {
+        }
+    }
+}