using log4net;
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using System;
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using System.Collections.Generic;
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using System.Linq;
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using System.Text;
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using System.Threading.Tasks;
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using WIDESEA_Core.Helper;
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namespace WIDESEA_Core.LogHelper
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{
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public class LogLock
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{
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private static readonly ILog log = LogManager.GetLogger(typeof(LogLock));
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static ReaderWriterLockSlim LogWriteLock = new ReaderWriterLockSlim();
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static int WritedCount = 0;
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static int FailedCount = 0;
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static string _contentRoot = string.Empty;
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public LogLock(string contentPath)
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{
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_contentRoot = contentPath;
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}
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public static void OutLogAOP(string prefix, string[] dataParas, bool IsHeader = true)
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{
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OutSql2LogToFile(prefix, dataParas, IsHeader);
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}
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public static void OutSql2LogToFile(string prefix, string[] dataParas, bool IsHeader = true, bool isWrt = false)
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{
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try
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{
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//设置读写锁为写入模式独占资源，其他写入请求需要等待本次写入结束之后才能继续写入
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//注意：长时间持有读线程锁或写线程锁会使其他线程发生饥饿 (starve)。 为了得到最好的性能，需要考虑重新构造应用程序以将写访问的持续时间减少到最小。
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// 从性能方面考虑，请求进入写入模式应该紧跟文件操作之前，在此处进入写入模式仅是为了降低代码复杂度
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// 因进入与退出写入模式应在同一个try finally语句块内，所以在请求进入写入模式之前不能触发异常，否则释放次数大于请求次数将会触发异常
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LogWriteLock.EnterWriteLock();
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var folderPath = Path.Combine(_contentRoot, "Log");
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if (!Directory.Exists(folderPath))
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{
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Directory.CreateDirectory(folderPath);
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}
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//string logFilePath = Path.Combine(path, $@"{filename}.log");
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var logFilePath = FileHelper.GetAvailableFileWithPrefixOrderSize(folderPath, prefix);
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var now = DateTime.Now;
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string logContent = String.Join("\r\n", dataParas);
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if (IsHeader)
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{
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logContent = (
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"--------------------------------\r\n" +
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DateTime.Now + "|\r\n" +
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String.Join("\r\n", dataParas) + "\r\n"
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);
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}
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else
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{
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logContent = (
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dataParas[1] + ",\r\n"
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);
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}
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//if (logContent.IsNotEmptyOrNull() && logContent.Length > 500)
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//{
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// logContent = logContent.Substring(0, 500) + "\r\n";
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//}
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if (isWrt)
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{
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System.IO.File.WriteAllText(logFilePath, logContent);
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}
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else
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{
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System.IO.File.AppendAllText(logFilePath, logContent);
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}
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WritedCount++;
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}
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catch (Exception e)
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{
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//Console.Write(e.Message);
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FailedCount++;
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}
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finally
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{
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//退出写入模式，释放资源占用
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//注意：一次请求对应一次释放
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// 若释放次数大于请求次数将会触发异常[写入锁定未经保持即被释放]
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// 若请求处理完成后未释放将会触发异常[此模式不下允许以递归方式获取写入锁定]
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LogWriteLock.ExitWriteLock();
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}
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}
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}
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}
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