Jan Tattermusch
9 years ago
parent
a5f1f120aa
commit
d550ad1f7c
3 changed files with 182 additions and 96 deletions
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#region Copyright notice and license |
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|
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// Copyright 2015, Google Inc. |
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// All rights reserved. |
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// |
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// Redistribution and use in source and binary forms, with or without |
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// modification, are permitted provided that the following conditions are |
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// met: |
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// |
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// * Redistributions of source code must retain the above copyright |
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// notice, this list of conditions and the following disclaimer. |
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// * Redistributions in binary form must reproduce the above |
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// copyright notice, this list of conditions and the following disclaimer |
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// in the documentation and/or other materials provided with the |
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// distribution. |
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// * Neither the name of Google Inc. nor the names of its |
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// contributors may be used to endorse or promote products derived from |
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// this software without specific prior written permission. |
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// |
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// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
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// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
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// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
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// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
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// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
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// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
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// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
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// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
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// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
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// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
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// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
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|
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#endregion |
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|
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using System; |
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using System.Collections.Generic; |
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using System.Globalization; |
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using System.IO; |
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using Grpc.Core.Utils; |
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|
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namespace Grpc.Core.Logging |
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{ |
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/// <summary>Logger that logs to an arbitrary <c>System.IO.TextWriter</c>.</summary> |
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public class TextWriterLogger : ILogger |
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{ |
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// Format similar enough to C core log format except nanosecond precision is not supported. |
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const string DateTimeFormatString = "MMdd HH:mm:ss.ffffff"; |
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|
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readonly Func<TextWriter> textWriterProvider; |
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readonly Type forType; |
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readonly string forTypeString; |
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|
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/// <summary> |
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/// Creates a console logger not associated to any specific type and writes to given <c>System.IO.TextWriter</c>. |
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/// User is responsible for providing an instance of TextWriter that is thread-safe. |
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/// </summary> |
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public TextWriterLogger(TextWriter textWriter) : this(() => textWriter) |
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{ |
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GrpcPreconditions.CheckNotNull(textWriter); |
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} |
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|
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/// <summary> |
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/// Creates a console logger not associated to any specific type and writes to a <c>System.IO.TextWriter</c> obtained from given provider. |
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/// User is responsible for providing an instance of TextWriter that is thread-safe. |
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/// </summary> |
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public TextWriterLogger(Func<TextWriter> textWriterProvider) : this(textWriterProvider, null) |
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{ |
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} |
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|
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/// <summary>Creates a console logger that logs messsage specific for given type.</summary> |
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protected TextWriterLogger(Func<TextWriter> textWriterProvider, Type forType) |
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{ |
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this.textWriterProvider = GrpcPreconditions.CheckNotNull(textWriterProvider); |
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this.forType = forType; |
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if (forType != null) |
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{ |
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var namespaceStr = forType.Namespace ?? ""; |
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if (namespaceStr.Length > 0) |
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{ |
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namespaceStr += "."; |
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} |
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this.forTypeString = namespaceStr + forType.Name + " "; |
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} |
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else |
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{ |
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this.forTypeString = ""; |
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} |
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} |
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|
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/// <summary> |
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/// Returns a logger associated with the specified type. |
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/// </summary> |
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public virtual ILogger ForType<T>() |
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{ |
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if (typeof(T) == forType) |
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{ |
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return this; |
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} |
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return new TextWriterLogger(this.textWriterProvider, typeof(T)); |
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} |
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|
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/// <summary>Logs a message with severity Debug.</summary> |
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public void Debug(string message) |
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{ |
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Log("D", message); |
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} |
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|
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/// <summary>Logs a formatted message with severity Debug.</summary> |
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public void Debug(string format, params object[] formatArgs) |
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{ |
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Debug(string.Format(format, formatArgs)); |
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} |
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|
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/// <summary>Logs a message with severity Info.</summary> |
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public void Info(string message) |
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{ |
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Log("I", message); |
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} |
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|
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/// <summary>Logs a formatted message with severity Info.</summary> |
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public void Info(string format, params object[] formatArgs) |
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{ |
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Info(string.Format(format, formatArgs)); |
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} |
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|
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/// <summary>Logs a message with severity Warning.</summary> |
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public void Warning(string message) |
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{ |
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Log("W", message); |
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} |
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|
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/// <summary>Logs a formatted message with severity Warning.</summary> |
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public void Warning(string format, params object[] formatArgs) |
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{ |
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Warning(string.Format(format, formatArgs)); |
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} |
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|
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/// <summary>Logs a message and an associated exception with severity Warning.</summary> |
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public void Warning(Exception exception, string message) |
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{ |
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Warning(message + " " + exception); |
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} |
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|
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/// <summary>Logs a message with severity Error.</summary> |
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public void Error(string message) |
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{ |
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Log("E", message); |
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} |
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|
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/// <summary>Logs a formatted message with severity Error.</summary> |
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public void Error(string format, params object[] formatArgs) |
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{ |
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Error(string.Format(format, formatArgs)); |
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} |
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|
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/// <summary>Logs a message and an associated exception with severity Error.</summary> |
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public void Error(Exception exception, string message) |
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{ |
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Error(message + " " + exception); |
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} |
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|
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/// <summary>Gets the type associated with this logger.</summary> |
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protected Type AssociatedType |
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{ |
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get { return forType; } |
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} |
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|
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private void Log(string severityString, string message) |
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{ |
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textWriterProvider().WriteLine("{0}{1} {2}{3}", |
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severityString, |
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DateTime.Now.ToString(DateTimeFormatString, CultureInfo.InvariantCulture), |
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forTypeString, |
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message); |
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} |
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} |
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} |
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