initial commit

CSharp/Core/MsLogger.Core/DataStoreLogger.cs

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+using System.Diagnostics;
+using LogViewer.Core;
+using Microsoft.Extensions.Logging;
+
+namespace MsLogger.Core;
+
+public class DataStoreLogger: ILogger
+{
+    // ref: https://learn.microsoft.com/en-us/dotnet/core/extensions/custom-logging-provider
+
+    #region Constructor
+
+    public DataStoreLogger(string name, Func<DataStoreLoggerConfiguration> getCurrentConfig, ILogDataStore dataStore)
+    {
+        (_name, _getCurrentConfig) = (name, getCurrentConfig);
+        _dataStore = dataStore;
+    }
+
+    #endregion
+
+    #region Fields
+
+    private readonly ILogDataStore _dataStore;
+    private readonly string _name;
+    private readonly Func<DataStoreLoggerConfiguration> _getCurrentConfig;
+
+    #endregion
+
+    #region methods
+
+    public IDisposable BeginScope<TState>(TState state)  where TState : notnull => default!;
+
+    public bool IsEnabled(LogLevel logLevel) => true;
+
+    public void Log<TState>(LogLevel logLevel, EventId eventId, TState state, Exception? exception, Func<TState, Exception, string> formatter)
+    {
+        // check if we are logging for passed log level
+        if (!IsEnabled(logLevel))
+            return;
+
+        DataStoreLoggerConfiguration config = _getCurrentConfig();
+
+        _dataStore.AddEntry(new()
+        {
+            Timestamp = DateTime.UtcNow,
+            LogLevel = logLevel,
+            // do we override the default EventId if it exists?
+            EventId = eventId.Id == 0 && config.EventId != 0 ? config.EventId : eventId,
+            State = state,
+            Exception = exception?.Message ?? (logLevel == LogLevel.Error ? state?.ToString() ?? "" : ""),
+            Color = config.Colors[logLevel],
+        });
+        
+        Debug.WriteLine($"--- [{logLevel.ToString()[..3]}] {_name} - {formatter(state, exception!)}");
+    }
+
+    #endregion
+}