78 lines
2.6 KiB
C#
78 lines
2.6 KiB
C#
using System;
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using System.IO;
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using Best.HTTP.Shared.PlatformSupport.FileSystem;
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using Best.HTTP.Shared.PlatformSupport.Memory;
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namespace Best.HTTP.Shared.Logger
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{
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/// <summary>
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/// Provides an implementation of <see cref="ILogOutput"/> that writes log messages to a file.
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/// </summary>
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public sealed class FileOutput : ILogOutput
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{
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/// <summary>
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/// Gets a value indicating whether this log output accepts color codes. Always returns <c>false</c>.
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/// </summary>
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public bool AcceptColor { get; } = false;
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private Stream fileStream;
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/// <summary>
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/// Initializes a new instance of the FileOutput class with the specified file name.
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/// </summary>
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/// <param name="fileName">The name of the file to write log messages to.</param>
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public FileOutput(string fileName)
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{
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// Create a buffered stream for writing log messages to the specified file.
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this.fileStream = new BufferedStream(HTTPManager.IOService.CreateFileStream(fileName, FileStreamModes.Create), 512 * 1024);
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}
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/// <summary>
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/// Writes a log message to the file.
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/// </summary>
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/// <param name="level">The log level of the message.</param>
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/// <param name="logEntry">The log message to write.</param>
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public void Write(Loglevels level, string logEntry)
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{
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if (this.fileStream != null && !string.IsNullOrEmpty(logEntry))
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{
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int count = System.Text.Encoding.UTF8.GetByteCount(logEntry) + 2;
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var buffer = BufferPool.Get(count, true);
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try
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{
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System.Text.Encoding.UTF8.GetBytes(logEntry, 0, logEntry.Length, buffer, 0);
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buffer[count - 2] = (byte)'\r';
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buffer[count - 1] = (byte)'\n';
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this.fileStream.Write(buffer, 0, count);
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}
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finally
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{
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BufferPool.Release(buffer);
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}
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}
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}
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/// <summary>
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/// Flushes any buffered log messages to the file.
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/// </summary>
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public void Flush() => this.fileStream?.Flush();
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/// <summary>
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/// Releases any resources used by the FileOutput instance.
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/// </summary>
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public void Dispose()
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{
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if (this.fileStream != null)
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{
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this.fileStream.Close();
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this.fileStream = null;
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}
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GC.SuppressFinalize(this);
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}
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}
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}
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