Initial checkin of gRPC to third_party/

third_party/grpc/src/csharp/Grpc.Core/Logging/NullLogger.cs

-#region Copyright notice and license
-// Protocol Buffers - Google's data interchange format
-// Copyright 2008 Google Inc.  All rights reserved.
-// https://developers.google.com/protocol-buffers/
+#region Copyright notice and license
+
+// Copyright 2016, Google Inc.
+// All rights reserved.
 //
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 // notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 // copyright notice, this list of conditions and the following disclaimer
 // in the documentation and/or other materials provided with the
 // distribution.
 //     * Neither the name of Google Inc. nor the names of its
 // contributors may be used to endorse or promote products derived from
 // this software without specific prior written permission.
 //
 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
 // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
 #endregion
 
-namespace Google.Protobuf.Reflection
+using System;
+
+namespace Grpc.Core.Logging
 {
     /// <summary>
-    /// Enumeration of all the possible field types.
+    /// Logger which doesn't log any information anywhere.
     /// </summary>
-    public enum FieldType
+    public sealed class NullLogger : ILogger
     {
         /// <summary>
-        /// The <c>double</c> field type.
+        /// As with all logging calls on this logger, this method is a no-op.
         /// </summary>
-        Double,
+        public void Debug(string message)
+        {
+        }
+
         /// <summary>
-        /// The <c>float</c> field type.
+        /// As with all logging calls on this logger, this method is a no-op.
         /// </summary>
-        Float,
+        public void Debug(string format, params object[] formatArgs)
+        {
+        }
+
         /// <summary>
-        /// The <c>int64</c> field type.
+        /// As with all logging calls on this logger, this method is a no-op.
         /// </summary>
-        Int64,
+        public void Error(string message)
+        {
+        }
+
         /// <summary>
-        /// The <c>uint64</c> field type.
+        /// As with all logging calls on this logger, this method is a no-op.
         /// </summary>
-        UInt64,
+        public void Error(Exception exception, string message)
+        {
+        }
+
         /// <summary>
-        /// The <c>int32</c> field type.
+        /// As with all logging calls on this logger, this method is a no-op.
         /// </summary>
-        Int32,
+        public void Error(string format, params object[] formatArgs)
+        {
+        }
+
         /// <summary>
-        /// The <c>fixed64</c> field type.
+        /// Returns a reference to the instance on which the method is called, as
+        /// instances aren't associated with specific types.
         /// </summary>
-        Fixed64,
+        public ILogger ForType<T>()
+        {
+            return this;
+        }
+
         /// <summary>
-        /// The <c>fixed32</c> field type.
+        /// As with all logging calls on this logger, this method is a no-op.
         /// </summary>
-        Fixed32,
+        public void Info(string message)
+        {
+        }
+
         /// <summary>
-        /// The <c>bool</c> field type.
+        /// As with all logging calls on this logger, this method is a no-op.
         /// </summary>
-        Bool,
+        public void Info(string format, params object[] formatArgs)
+        {
+        }
+
         /// <summary>
-        /// The <c>string</c> field type.
+        /// As with all logging calls on this logger, this method is a no-op.
         /// </summary>
-        String,
+        public void Warning(string message)
+        {
+        }
+
         /// <summary>
-        /// The field type used for groups (not supported in this implementation).
+        /// As with all logging calls on this logger, this method is a no-op.
         /// </summary>
-        Group,
+        public void Warning(Exception exception, string message)
+        {
+        }
+
         /// <summary>
-        /// The field type used for message fields.
+        /// As with all logging calls on this logger, this method is a no-op.
         /// </summary>
-        Message,
-        /// <summary>
-        /// The <c>bytes</c> field type.
-        /// </summary>
-        Bytes,
-        /// <summary>
-        /// The <c>uint32</c> field type.
-        /// </summary>
-        UInt32,
-        /// <summary>
-        /// The <c>sfixed32</c> field type.
-        /// </summary>
-        SFixed32,
-        /// <summary>
-        /// The <c>sfixed64</c> field type.
-        /// </summary>
-        SFixed64,
-        /// <summary>
-        /// The <c>sint32</c> field type.
-        /// </summary>
-        SInt32,
-        /// <summary>
-        /// The <c>sint64</c> field type.
-        /// </summary>
-        SInt64,
-        /// <summary>
-        /// The field type used for enum fields.
-        /// </summary>
-        Enum
+        public void Warning(string format, params object[] formatArgs)
+        {
+        }
     }
-}
+}