Google Api

Yavsc/GoogleApiSupport/Google.Apis.Core/Logging/ConsoleLogger.cs

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+/*
+Copyright 2017 Google Inc
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+using Google.Apis.Util;
+using System;
+
+namespace Google.Apis.Logging
+{
+    /// <summary>
+    /// A logger than logs to StdError or StdOut.
+    /// </summary>
+    public sealed class ConsoleLogger : BaseLogger, ILogger
+    {
+        /// <summary>
+        /// Construct a <see cref="ConsoleLogger"/>. 
+        /// </summary>
+        /// <param name="minimumLogLevel">Logging will be enabled at this level and all higher levels.</param>
+        /// <param name="logToStdOut"><c>true</c> to log to StdOut, defaults to logging to StdError.</param>
+        /// <param name="clock">Optional <see cref="IClock"/>; will use the system clock if <c>null</c>.</param>
+        public ConsoleLogger(LogLevel minimumLogLevel, bool logToStdOut = false, IClock clock = null) : this(minimumLogLevel, logToStdOut, clock, null) { }
+
+        private ConsoleLogger(LogLevel minimumLogLevel, bool logToStdOut, IClock clock, Type forType) : base(minimumLogLevel, clock, forType)
+        {
+            LogToStdOut = logToStdOut;
+        }
+
+        /// <summary>
+        /// <c>false</c> to log to StdError; <c>true</c> to log to StdOut.
+        /// </summary>
+        public bool LogToStdOut { get; }
+
+        /// <inheritdoc/>
+        protected override ILogger BuildNewLogger(Type type) => new ConsoleLogger(MinimumLogLevel, LogToStdOut, Clock, type);
+
+        /// <inheritdoc/>
+        protected override void Log(LogLevel logLevel, string formattedMessage)
+        {
+            (LogToStdOut ? Console.Out : Console.Error).WriteLine(formattedMessage);
+        }
+    }
+}