Added ILogger, made logger optional for RestClients

src/Discord.Net.Net45/Discord.Net.csproj

@@ -487,6 +487,9 @@
     <Compile Include="..\Discord.Net\Legacy.cs">
       <Link>Legacy.cs</Link>
     </Compile>
+    <Compile Include="..\Discord.Net\Logging\ILogger.cs">
+      <Link>Logging\ILogger.cs</Link>
+    </Compile>
     <Compile Include="..\Discord.Net\Logging\Logger.cs">
       <Link>Logging\Logger.cs</Link>
     </Compile>

src/Discord.Net/Logging/ILogger.cs

@@ -0,0 +1,44 @@
+using System;
+
+namespace Discord.Logging
+{
+    public interface ILogger
+    {
+        LogSeverity Level { get; }
+
+        void Log(LogSeverity severity, string message, Exception exception = null);
+#if !NET45
+        void Log(LogSeverity severity, FormattableString message, Exception exception = null);
+#endif
+
+        void Error(string message, Exception exception = null);
+#if !NET45
+        void Error(FormattableString message, Exception exception = null);
+#endif
+        void Error(Exception exception);
+
+        void Warning(string message, Exception exception =  null);
+#if !NET45
+        void Warning(FormattableString message, Exception exception = null);
+#endif
+        void Warning(Exception exception);
+
+        void Info(string message, Exception exception = null);
+#if !NET45
+        void Info(FormattableString message, Exception exception = null);
+#endif
+        void Info(Exception exception);
+
+        void Verbose(string message, Exception exception = null);
+#if !NET45
+        void Verbose(FormattableString message, Exception exception = null);
+#endif
+        void Verbose(Exception exception);
+
+        void Debug(string message, Exception exception = null);
+#if !NET45
+        void Debug(FormattableString message, Exception exception = null);
+#endif
+        void Debug(Exception exception);
+    }
+}

src/Discord.Net/Logging/Logger.cs

@@ -2,7 +2,7 @@
 
 namespace Discord.Logging
 {
-    public class Logger
+    public class Logger : ILogger
     {
         private readonly LogManager _manager;
 

src/Discord.Net/Net/Rest/BuiltInEngine.cs

@@ -22,15 +22,15 @@ namespace Discord.Net.Rest
         private readonly string _baseUrl;
 
         private readonly AsyncLock _rateLimitLock;
+        private readonly ILogger _logger;
         private DateTime _rateLimitTime;
 
-        internal Logger Logger { get; }
 
-        public BuiltInEngine(DiscordConfig config, string baseUrl, Logger logger)
+        public BuiltInEngine(DiscordConfig config, string baseUrl, ILogger logger)
 		{
 			_config = config;
             _baseUrl = baseUrl;
-            Logger = logger;
+            _logger = logger;
 
             _rateLimitLock = new AsyncLock();
             _client = new HttpClient(new HttpClientHandler
@@ -99,6 +99,8 @@ namespace Discord.Net.Rest
 
                     int milliseconds;
                     if (retryAfter != null && int.TryParse(retryAfter, out milliseconds))
+                    {
+                        if (_logger != null)
                         {
                             var now = DateTime.UtcNow;
                             if (now >= _rateLimitTime)
@@ -108,7 +110,8 @@ namespace Discord.Net.Rest
                                     if (now >= _rateLimitTime)
                                     {
                                         _rateLimitTime = now.AddMilliseconds(milliseconds);
-                                    Logger.Warning($"Rate limit hit, waiting {Math.Round(milliseconds / 1000.0f, 2)} seconds");
+                                        _logger.Warning($"Rate limit hit, waiting {Math.Round(milliseconds / 1000.0f, 2)} seconds");
+                                    }
                                 }
                             }
                         }

src/Discord.Net/Net/Rest/ETFRestClient.cs

@@ -9,7 +9,7 @@ namespace Discord.Net.Rest
     {
         private readonly ETFWriter _serializer;
 
-        public ETFRestClient(DiscordConfig config, string baseUrl, Logger logger)
+        public ETFRestClient(DiscordConfig config, string baseUrl, ILogger logger = null)
             : base(config, baseUrl, logger)
         {
             _serializer = new ETFWriter(new MemoryStream());

src/Discord.Net/Net/Rest/JsonRestClient.cs

@@ -8,7 +8,7 @@ namespace Discord.Net.Rest
     {
         private JsonSerializer _serializer;
 
-        public JsonRestClient(DiscordConfig config, string baseUrl, Logger logger)
+        public JsonRestClient(DiscordConfig config, string baseUrl, ILogger logger = null)
             : base(config, baseUrl, logger)
         {
             _serializer = new JsonSerializer();

src/Discord.Net/Net/Rest/RestClient.cs

@@ -38,10 +38,9 @@ namespace Discord.Net.Rest
         private readonly DiscordConfig _config;
 		private readonly IRestEngine _engine;
         private readonly ETFWriter _serializer;
+        private readonly ILogger _logger;
         private string _token;
 
-        internal Logger Logger { get; }
-
         public CancellationToken CancelToken { get; set; }
 
         public string Token
@@ -54,10 +53,10 @@ namespace Discord.Net.Rest
             }
         }
 
-        protected RestClient(DiscordConfig config, string baseUrl, Logger logger)
+        protected RestClient(DiscordConfig config, string baseUrl, ILogger logger = null)
 		{
 			_config = config;
-            Logger = logger;
+            _logger = logger;
 
 #if !DOTNET5_4
             _engine = new RestSharpEngine(config, baseUrl, logger);
@@ -65,7 +64,7 @@ namespace Discord.Net.Rest
 			_engine = new BuiltInEngine(config, baseUrl, logger);
 #endif
 
-            if (Logger.Level >= LogSeverity.Verbose)
+            if (_logger != null && _logger.Level >= LogSeverity.Verbose)
             {
                 this.SentRequest += (s, e) =>
                 {
@@ -82,7 +81,7 @@ namespace Discord.Net.Rest
                                 log += $" {e.ResponseJson}";
                         }
                     }
-                    Logger.Verbose(log);
+                    _logger.Verbose(log);
                 };
             }
         }

src/Discord.Net/Net/Rest/SharpRestEngine.cs

@@ -19,14 +19,13 @@ namespace Discord.Net.Rest
 		private readonly RestSharpClient _client;
 
         private readonly AsyncLock _rateLimitLock;
+        private readonly ILogger _logger;
         private DateTime _rateLimitTime;
 
-        internal Logger Logger { get; }
+        public RestSharpEngine(DiscordConfig config, string baseUrl, ILogger logger)
-
-        public RestSharpEngine(DiscordConfig config, string baseUrl, Logger logger)
 		{
 			_config = config;
-            Logger = logger;
+            _logger = logger;
 
             _rateLimitLock = new AsyncLock();
             _client = new RestSharpClient(baseUrl)
@@ -88,6 +87,8 @@ namespace Discord.Net.Rest
 
                     int milliseconds;
                     if (retryAfter != null && int.TryParse((string)retryAfter.Value, out milliseconds))
+                    {
+                        if (_logger != null)
                         {
                             var now = DateTime.UtcNow;
                             if (now >= _rateLimitTime)
@@ -97,7 +98,8 @@ namespace Discord.Net.Rest
                                     if (now >= _rateLimitTime)
                                     {
                                         _rateLimitTime = now.AddMilliseconds(milliseconds);
-                                    Logger.Warning($"Rate limit hit, waiting {Math.Round(milliseconds / 1000.0f, 2)} seconds");
+                                        _logger.Warning($"Rate limit hit, waiting {Math.Round(milliseconds / 1000.0f, 2)} seconds");
+                                    }
                                 }
                             }
                         }