mirror of
https://git.teknik.io/Teknikode/Teknik.git
synced 2023-08-02 14:16:22 +02:00
162 lines
6.8 KiB
C#
162 lines
6.8 KiB
C#
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using Microsoft.Extensions.Logging;
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using System;
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using System.Collections.Generic;
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using System.IO;
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using System.Linq;
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using System.Net.Mail;
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using System.Text;
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using Teknik.Configuration;
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using Teknik.Utilities;
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namespace Teknik.Logging
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{
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public class Logger : ILogger
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{
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private static readonly object Locker = new object();
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private readonly string _name;
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private readonly Config _config;
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public Logger(string name, Config config)
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{
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_name = name;
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_config = config;
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}
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public void Log<TState>(LogLevel logLevel, EventId eventId, TState state, Exception exception, Func<TState, Exception, string> formatter)
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{
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if (!IsEnabled(logLevel))
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return;
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// write an entry to the logs
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LogMessage log = new LogMessage();
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log.Level = logLevel;
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log.Message = formatter(state, exception);
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log.Exception = exception;
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WriteLogMessage(log);
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}
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public bool IsEnabled(LogLevel logLevel)
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{
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if (_config.LoggingConfig.Enabled)
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{
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// Do we want to write a log for this level? (Default to Error)
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LogLevel minLogLevel = LogLevel.Error;
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Enum.TryParse(_config.LoggingConfig.LogLevel, out minLogLevel);
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if (logLevel >= minLogLevel)
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return true;
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}
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return false;
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}
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public IDisposable BeginScope<TState>(TState state)
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{
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return null;
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}
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private void WriteLogMessage(LogMessage log)
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{
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try
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{
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// Lock the file processing so only 1 thread is working on the log file at a time
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lock (Locker)
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{
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if (!Directory.Exists(_config.LoggingConfig.OutputDirectory))
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{
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Directory.CreateDirectory(_config.LoggingConfig.OutputDirectory);
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}
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// Get current log file
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string fileName = Constants.LOG_FILE_NAME_PREFIX + Constants.LOG_FILE_EXT;
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string logFile = Path.Combine(_config.LoggingConfig.OutputDirectory, fileName);
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if (File.Exists(logFile))
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{
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// File already exists, so lets see if we need to rotate it
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if (_config.LoggingConfig.RotateLogs)
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{
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FileInfo info = new FileInfo(logFile);
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if (_config.LoggingConfig.MaxSize < info.Length && _config.LoggingConfig.MaxSize > 0)
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{
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// File is too large, so let's create a new name for it based on todays date
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string newFileName = Constants.LOG_FILE_NAME_PREFIX + "_" + DateTime.Now.ToString("yyyyMMdd") + Constants.LOG_FILE_EXT;
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newFileName = FileHelper.MakeUniqueFilename(newFileName, _config.LoggingConfig.OutputDirectory);
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string newLog = Path.Combine(_config.LoggingConfig.OutputDirectory, newFileName);
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// Move the current file to the new file
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File.Move(logFile, newLog);
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}
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// Make sure we have less than the max number of logs
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List<string> totalFiles = Directory.GetFiles(_config.LoggingConfig.OutputDirectory, string.Format("{0}*{1}", Constants.LOG_FILE_NAME_PREFIX, Constants.LOG_FILE_EXT), SearchOption.TopDirectoryOnly).ToList();
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if (totalFiles.Count + 1 > _config.LoggingConfig.MaxCount && _config.LoggingConfig.MaxCount > 0)
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{
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// We will have too many logs, so let's remove the last one
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totalFiles.Sort();
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string fileToRemove = totalFiles[totalFiles.Count - 1];
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File.Delete(fileToRemove);
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}
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}
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}
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// We have rotated if needed, so let's write the entry
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File.AppendAllText(logFile, log.ToString() + Environment.NewLine);
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}
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}
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catch (Exception) { } // If we throw when writing the log, still try to send the email if needed
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try
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{
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// Send Email Message if enabled
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if (_config.LoggingConfig.SendEmail)
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{
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// Do we want to send an email for this level? (Default to error)
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LogLevel minEmailLevel = LogLevel.Error;
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Enum.TryParse(_config.LoggingConfig.EmailLevel, out minEmailLevel);
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if (log.Level >= minEmailLevel)
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{
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string subject = string.Format("{0} Log Message", log.Level);
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string message = "Message: " + log.Message;
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if (log.Exception != null)
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{
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message += Environment.NewLine + Environment.NewLine + "Exception: " + log.Exception.GetFullMessage(true, true);
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}
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SendErrorEmail(subject, message);
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}
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}
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}
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catch (Exception)
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{
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// Can't do anything about it. :/
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}
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}
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private void SendErrorEmail(string subject, string message)
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{
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try
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{
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// Let's also email the message to support
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SmtpClient client = new SmtpClient();
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client.Host = _config.LoggingConfig.SenderAccount.Host;
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client.Port = _config.LoggingConfig.SenderAccount.Port;
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client.EnableSsl = _config.LoggingConfig.SenderAccount.SSL;
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client.DeliveryMethod = SmtpDeliveryMethod.Network;
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client.UseDefaultCredentials = true;
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client.Credentials = new System.Net.NetworkCredential(_config.LoggingConfig.SenderAccount.Username, _config.LoggingConfig.SenderAccount.Password);
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client.Timeout = 5000;
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MailMessage mail = new MailMessage(_config.LoggingConfig.SenderAccount.EmailAddress, _config.LoggingConfig.RecipientEmailAddress);
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mail.Subject = subject;
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mail.Body = message;
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mail.BodyEncoding = UTF8Encoding.UTF8;
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mail.DeliveryNotificationOptions = DeliveryNotificationOptions.Never;
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client.Send(mail);
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}
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catch (Exception ex) { /* don't handle something in the handler */
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}
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}
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}
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}
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