LogNetFileSize.cs
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using System;
using System.IO;
namespace HslCommunication.LogNet
{
/// <summary>
/// 根据文件的大小来存储日志信息
/// </summary>
/// <remarks>
/// 此日志的实例是根据文件的大小储存，例如设置了2M，每隔2M，系统将生成一个新的日志文件。
/// </remarks>
public class LogNetFileSize : LogNetBase, ILogNet
{
#region Constructor
/// <summary>
/// 实例化一个根据文件大小生成新文件的
/// </summary>
/// <param name="filePath">日志文件的保存路径</param>
/// <param name="fileMaxSize">每个日志文件的最大大小，默认2M</param>
public LogNetFileSize(string filePath, int fileMaxSize = 2 * 1024 * 1024)
{
m_filePath = filePath;
m_fileMaxSize = fileMaxSize;
LogSaveMode = LogNetManagment.LogSaveModeByFileSize;
m_filePath = CheckPathEndWithSprit(m_filePath);
}
#endregion
#region LogNetBase Override
/// <summary>
/// 获取需要保存的日志文件
/// </summary>
/// <returns>字符串数据</returns>
protected override string GetFileSaveName()
{
//路径没有设置则返回空
if (string.IsNullOrEmpty(m_filePath)) return string.Empty;
if (string.IsNullOrEmpty(m_fileName))
{
//加载文件名称
m_fileName = GetLastAccessFileName();
}
if (File.Exists(m_fileName))
{
FileInfo fileInfo = new FileInfo(m_fileName);
if (fileInfo.Length > m_fileMaxSize)
{
//新生成文件
m_fileName = GetDefaultFileName();
}
}
return m_fileName;
}
#endregion
#region Public Method
/// <summary>
/// 返回所有的日志文件
/// </summary>
/// <returns>所有的日志文件信息</returns>
public string[] GetExistLogFileNames()
{
if (!string.IsNullOrEmpty(m_filePath))
{
return Directory.GetFiles(m_filePath, LogNetManagment.LogFileHeadString + "*.txt");
}
else
{
return new string[] { };
}
}
#endregion
#region Private Method
/// <summary>
/// 获取之前保存的日志文件
/// </summary>
/// <returns></returns>
private string GetLastAccessFileName()
{
foreach (var m in GetExistLogFileNames())
{
FileInfo fileInfo = new FileInfo(m);
if (fileInfo.Length < m_fileMaxSize)
{
m_CurrentFileSize = (int)fileInfo.Length;
return m;
}
}
//返回一个新的默认当前时间的日志名称
return GetDefaultFileName();
}
/// <summary>
/// 获取一个新的默认的文件名称
/// </summary>
/// <returns></returns>
private string GetDefaultFileName()
{
//返回一个新的默认当前时间的日志名称
return m_filePath + LogNetManagment.LogFileHeadString + DateTime.Now.ToString("yyyyMMddHHmmss") + ".txt";
}
#endregion
#region Private Member
private string m_fileName = string.Empty; // 当前正在存储的文件名
private string m_filePath = string.Empty; // 存储文件的路径
private int m_fileMaxSize = 2 * 1024 * 1024; //2M
private int m_CurrentFileSize = 0;
#endregion
#region Object Override
/// <summary>
/// 返回表示当前对象的字符串
/// </summary>
/// <returns>字符串数据</returns>
public override string ToString()
{
return $"LogNetFileSize[{m_fileMaxSize}]";
}
#endregion
}
}