| | 1 | | using System; |
| | 2 | | using System.Collections.Generic; |
| | 3 | | using System.IO; |
| | 4 | | using System.Reflection; |
| | 5 | | using System.Security; |
| | 6 | | using Application.Helper; |
| | 7 | |
|
| | 8 | | namespace Logging.Helper |
| | 9 | | { |
| | 10 | | #region Instructions |
| | 11 | | /// <summary>Class that provides common logging properties and methods.</summary> |
| | 12 | |
|
| | 13 | | /// <remarks> |
| | 14 | | /// <p>These are the different types of log message that can be used:</p> |
| | 15 | | /// <table> |
| | 16 | | /// <tr><th>Type</th><th>Description</th> |
| | 17 | | /// </tr><tr> |
| | 18 | | /// <td>Fatal</td><td>Use to log non-recoverable exceptions that |
| | 19 | | /// unexpectedly end the process.</td> |
| | 20 | | /// </tr><tr> |
| | 21 | | /// <td>Error</td><td>Use to log exceptions that have been handled but caused |
| | 22 | | /// the processing to stop.</td> |
| | 23 | | /// </tr><tr> |
| | 24 | | /// <td>Warning</td><td>Use to indicate that the process faced a potential problem |
| | 25 | | /// but can continue.</td> |
| | 26 | | /// </tr><tr> |
| | 27 | | /// <td>Information</td><td>These are purely informational messages; they <i>should not</i> |
| | 28 | | /// be used to indicate a fault or error state.</td> |
| | 29 | | /// </tr><tr> |
| | 30 | | /// <td>Debug</td><td>Used to indicate that the logged message can be used for |
| | 31 | | /// debugging purposes to help find the solution to tricky bugs.</td> |
| | 32 | | /// </tr> |
| | 33 | | /// </table> |
| | 34 | | /// </remarks> |
| | 35 | |
|
| | 36 | | /// <example> |
| | 37 | | /// In the program that requires logging functionality: |
| | 38 | | /// <code lang="C#"> |
| | 39 | | /// using Logging.Helper; |
| | 40 | | /// public class Program |
| | 41 | | /// { |
| | 42 | | /// /// <summary>Public static Logger.</summary> |
| | 43 | | /// // Logging configuration in the application settings (App.config)... |
| | 44 | | /// public static readonly Logger Logging = new Logger( typeof( Program ) ); |
| | 45 | | /// |
| | 46 | | /// // ... OR shared logging configuration filename specified in the application settings... |
| | 47 | | /// public static readonly Logger Logging = new Logger( Properties.Settings.Default.LogConfig ); |
| | 48 | | /// |
| | 49 | | /// // ... OR shared logging configuration filename hard-coded in each program... |
| | 50 | | /// public static readonly Logger Logging = new Logger( MethodBase.GetCurrentMethod().DeclaringType, "Sample.log4net |
| | 51 | | /// |
| | 52 | | /// static void Main( string[] args ) |
| | 53 | | /// { |
| | 54 | | /// try |
| | 55 | | /// { |
| | 56 | | /// Logging.Log( "Test specified message type.", LogSeverity.Warning ); |
| | 57 | | /// } |
| | 58 | | /// catch( Exception ex ) |
| | 59 | | /// { |
| | 60 | | /// // Handle any unexpected exceptions |
| | 61 | | /// Logging.Fatal( ex.ToString() ); |
| | 62 | | /// } |
| | 63 | | /// finally |
| | 64 | | /// { |
| | 65 | | /// // Set the program exit code based on whether any errors have been logged |
| | 66 | | /// Environment.ExitCode = Logging.HasErrors ? 1 : 0; |
| | 67 | | /// } |
| | 68 | | /// Environment.Exit( Environment.ExitCode ); |
| | 69 | | /// } |
| | 70 | | /// } |
| | 71 | | /// </code> |
| | 72 | | /// <br/>To allow a processing class to log using the logger created in the program it must inherit |
| | 73 | | /// from the Logging.Helper.LoggerEvent class and have the event handler set after it has been instantiated: |
| | 74 | | /// <code lang="C#"> |
| | 75 | | /// using Logging.Helper; |
| | 76 | | /// public class ProcessingClass : LoggerEvent |
| | 77 | | /// { |
| | 78 | | /// internal int DoProcessing() |
| | 79 | | /// { |
| | 80 | | /// var retValue = 0; // Assume normal completion |
| | 81 | | /// try |
| | 82 | | /// { |
| | 83 | | /// // This method is inherited from the LoggerEvent class |
| | 84 | | /// RaiseLogEvent( "Information message about the processing..." ); |
| | 85 | | /// } |
| | 86 | | /// catch( Exception ex ) |
| | 87 | | /// { |
| | 88 | | /// RaiseLogEvent( ex.ToString(), LogSeverity.Fatal ); |
| | 89 | | /// retValue = 1; // Abnormal completion |
| | 90 | | /// } |
| | 91 | | /// return retValue; |
| | 92 | | /// } |
| | 93 | | /// } |
| | 94 | | /// |
| | 95 | | /// using Logging.Helper; |
| | 96 | | /// public class Program |
| | 97 | | /// { |
| | 98 | | /// /// <summary>Public static Logger.</summary> |
| | 99 | | /// public static readonly Logger Logging = new Logger( typeof( Program ) ); |
| | 100 | | /// |
| | 101 | | /// static void Main( string[] args ) |
| | 102 | | /// { |
| | 103 | | /// try |
| | 104 | | /// { |
| | 105 | | /// // Create an object from a class that inherits LoggerEvent |
| | 106 | | /// var logicClass = new ProcessingClass(); |
| | 107 | | /// logicClass.RaiseLogHandler += Logging.OnRaiseLog; |
| | 108 | | /// |
| | 109 | | /// // Do Processing and set the Exit code |
| | 110 | | /// logicClass.DoProcessing(); |
| | 111 | | /// } |
| | 112 | | /// catch( Exception ex ) |
| | 113 | | /// { |
| | 114 | | /// // Handle any unexpected exceptions |
| | 115 | | /// Logging.Fatal( ex.ToString() ); |
| | 116 | | /// } |
| | 117 | | /// finally |
| | 118 | | /// { |
| | 119 | | /// // Set the program exit code based on whether any errors have been logged |
| | 120 | | /// Environment.ExitCode = Logging.HasErrors ? 1 : 0; |
| | 121 | | /// } |
| | 122 | | /// Environment.Exit( Environment.ExitCode ); |
| | 123 | | /// } |
| | 124 | | /// } |
| | 125 | | /// </code> |
| | 126 | | /// </example> |
| | 127 | | #endregion |
| | 128 | | public sealed class Logger |
| | 129 | | { |
| | 130 | | #region Properties and Constants |
| | 131 | |
|
| | 132 | | /// <summary>Gets or sets the maximum number of log files to keep.</summary> |
| | 133 | | public int MaxLogFiles |
| | 134 | | { |
| 1 | 135 | | get => LogImpl.MaxLogFiles; |
| | 136 | | set |
| 16 | 137 | | { |
| 16 | 138 | | if( null != LogImpl ) |
| 16 | 139 | | { |
| 16 | 140 | | LogImpl.MaxLogFiles = value; |
| 16 | 141 | | } |
| 16 | 142 | | } |
| | 143 | | } |
| | 144 | |
|
| | 145 | | /// <summary>Gets the logging configuration file name.</summary> |
| 157 | 146 | | public string ConfigFile { get; private set; } = string.Empty; |
| | 147 | |
|
| | 148 | | /// <summary>Gets the count of warning messages logged.</summary> |
| 85 | 149 | | public int WarnCount { get; private set; } |
| | 150 | |
|
| | 151 | | /// <summary>Gets the count of error messages logged.</summary> |
| 149 | 152 | | public int ErrorCount { get; private set; } |
| | 153 | |
|
| | 154 | | /// <summary>Gets the count of fatal messages logged.</summary> |
| 80 | 155 | | public int FatalCount { get; private set; } |
| | 156 | |
|
| | 157 | | /// <summary>Indicates whether errors exists.</summary> |
| 1 | 158 | | public bool HasErrors => ( ErrorCount + FatalCount ) > 0; |
| | 159 | |
|
| | 160 | | /// <summary>Gets or sets the logger interface.</summary> |
| 370 | 161 | | private ILog LogImpl { get; set; } |
| | 162 | |
|
| | 163 | | /// <summary>Log file extension (suffix) including the period.</summary> |
| | 164 | | public const string cExtension = ".log"; |
| | 165 | |
|
| | 166 | | #endregion |
| | 167 | |
|
| | 168 | | #region Constructors and Initialization |
| | 169 | |
|
| | 170 | | /// <summary> |
| | 171 | | /// Initializes a new instance of the Logger class using an optional configuration file name. |
| | 172 | | /// </summary> |
| | 173 | | /// <param name="configFile">Logging configuration file name to use.</param> |
| | 174 | | /// <exception cref="NLog.NLogConfigurationException">Thrown if the NLog configuration is invalid.</exception> |
| | 175 | | /// <exception cref="TargetException">Thrown when an attempt is made to invoke an invalid target.</exception> |
| 41 | 176 | | public Logger( string configFile = "" ) |
| 41 | 177 | | { |
| 41 | 178 | | Initialize( Assembly.GetCallingAssembly(), MethodBase.GetCurrentMethod().DeclaringType, configFile ); |
| 41 | 179 | | } |
| | 180 | |
|
| | 181 | | /// <summary> |
| | 182 | | /// Initializes a new instance of the Logger class using a logger type and configuration file name. |
| | 183 | | /// </summary> |
| | 184 | | /// <param name="loggerType">Type to be used as the name of the logger to retrieve.</param> |
| | 185 | | /// <param name="configFile">Logging configuration file name to use.</param> |
| | 186 | | /// <exception cref="NLog.NLogConfigurationException">Thrown if the NLog configuration is invalid.</exception> |
| 2 | 187 | | public Logger( Type loggerType, string configFile = "" ) |
| 2 | 188 | | { |
| 2 | 189 | | Initialize( Assembly.GetCallingAssembly(), loggerType, configFile ); |
| 2 | 190 | | } |
| | 191 | |
|
| | 192 | | private void Initialize( Assembly assembly, Type loggerType, string configFile ) |
| 43 | 193 | | { |
| | 194 | | try |
| 43 | 195 | | { |
| 43 | 196 | | if( configFile.Length > 0 ) |
| 24 | 197 | | { |
| | 198 | | // Set the configuration file name |
| 24 | 199 | | ConfigFile = Path.GetFullPath( configFile ); |
| | 200 | |
|
| | 201 | | // Check if the configuration file exists |
| 26 | 202 | | if( !File.Exists( ConfigFile ) ) { ConfigFile = string.Empty; } |
| 23 | 203 | | } |
| | 204 | | else |
| 19 | 205 | | { |
| | 206 | | // If no configuration file supplied check if an app.config file exists |
| 19 | 207 | | configFile = assembly.Location + ".config"; |
| 76 | 208 | | if( File.Exists( configFile ) ) { ConfigFile = configFile; } |
| 19 | 209 | | } |
| 42 | 210 | | } |
| 4 | 211 | | catch { ConfigFile = string.Empty; } |
| | 212 | |
|
| | 213 | | // Initialize the logging implementation |
| | 214 | | //LogImpl = new ImplBasicLog(); |
| | 215 | |
|
| | 216 | | // Requires an assembly reference for NLog.dll |
| 43 | 217 | | LogImpl = new ImplNLog( loggerType, ConfigFile ); |
| | 218 | |
|
| | 219 | | // Requires an assembly reference for log4net.dll |
| | 220 | | //LogImpl = new ImplLog4Net( assembly, loggerType, ConfigFile ); |
| 43 | 221 | | } |
| | 222 | |
|
| | 223 | | /// <summary>Converts the value of this instance to a string.</summary> |
| | 224 | | /// <returns>Instance value.</returns> |
| | 225 | | public override string ToString() |
| 1 | 226 | | { |
| 1 | 227 | | return LogImpl.ToString(); |
| 1 | 228 | | } |
| | 229 | |
|
| | 230 | | #endregion |
| | 231 | |
|
| | 232 | | #region Private Methods |
| | 233 | |
|
| | 234 | | /// <summary>Cleans a string value.</summary> |
| | 235 | | /// <param name="strToClean">String to clean.</param> |
| | 236 | | /// <returns>Trimmed string.</returns> |
| | 237 | | internal static string CleanString( string strToClean ) |
| 71 | 238 | | { |
| 71 | 239 | | return string.IsNullOrWhiteSpace( strToClean ) ? string.Empty : strToClean.Trim(); |
| 71 | 240 | | } |
| | 241 | |
|
| | 242 | | private bool CanLog( LogSeverity severity ) |
| 262 | 243 | | { |
| 262 | 244 | | switch( severity ) |
| | 245 | | { |
| | 246 | | case LogSeverity.Error: |
| 74 | 247 | | return LogImpl.IsErrorEnabled; |
| | 248 | | case LogSeverity.Fatal: |
| 39 | 249 | | return LogImpl.IsFatalEnabled; |
| | 250 | | case LogSeverity.Information: |
| 54 | 251 | | return LogImpl.IsInfoEnabled; |
| | 252 | | case LogSeverity.Warning: |
| 42 | 253 | | return LogImpl.IsWarnEnabled; |
| | 254 | | default: |
| 53 | 255 | | return LogImpl.IsDebugEnabled; |
| | 256 | | } |
| 262 | 257 | | } |
| | 258 | |
|
| | 259 | | #endregion |
| | 260 | |
|
| | 261 | | #region Log Event Handler Methods |
| | 262 | |
|
| | 263 | | /// <summary>Event handler for the logging process.</summary> |
| | 264 | | /// <param name="sender">Sender object triggering the event.</param> |
| | 265 | | /// <param name="e">Instance of LogEventArgs class with addition details about the logging event.</param> |
| | 266 | | public void OnRaiseLog( object sender, LoggerEventArgs e ) |
| 1 | 267 | | { |
| 1 | 268 | | Log( e.Message, e.Severity ); |
| 1 | 269 | | } |
| | 270 | |
|
| | 271 | | /// <summary>Log a message.</summary> |
| | 272 | | /// <param name="msg">Message text.</param> |
| | 273 | | /// <param name="severity">Identifies the type of trace event.</param> |
| | 274 | | /// <returns><see langword="true"/> if the message was logged, otherwise <see langword="false"/> is returned.</retur |
| | 275 | | /// <exception cref="NotImplementedException"></exception> |
| | 276 | | public bool Log( string msg, LogSeverity severity = LogSeverity.Information ) |
| 6 | 277 | | { |
| | 278 | | bool retValue; |
| 6 | 279 | | switch( severity ) |
| | 280 | | { |
| | 281 | | case LogSeverity.Fatal: |
| 2 | 282 | | retValue = Fatal( msg ); |
| 2 | 283 | | break; |
| | 284 | | case LogSeverity.Error: |
| 1 | 285 | | retValue = Error( msg ); |
| 1 | 286 | | break; |
| | 287 | | case LogSeverity.Warning: |
| 1 | 288 | | retValue = Warn( msg ); |
| 1 | 289 | | break; |
| | 290 | | case LogSeverity.Information: |
| 1 | 291 | | retValue = Info( msg ); |
| 1 | 292 | | break; |
| | 293 | | default: |
| 1 | 294 | | retValue = Debug( msg ); |
| 1 | 295 | | break; |
| | 296 | | } |
| | 297 | |
|
| 6 | 298 | | return retValue; |
| 6 | 299 | | } |
| | 300 | |
|
| | 301 | | #endregion |
| | 302 | |
|
| | 303 | | #region Message Logging |
| | 304 | |
|
| | 305 | | #region Logging Information |
| | 306 | |
|
| | 307 | | /// <summary>Logs an informational message.</summary> |
| | 308 | | /// <param name="message">Message text to log.</param> |
| | 309 | | /// <returns><see langword="true"/> if the message was logged, otherwise <see langword="false"/> is returned.</retur |
| | 310 | | public bool Info( string message ) |
| 23 | 311 | | { |
| 40 | 312 | | if( !CanLog( LogSeverity.Information ) ) return false; |
| | 313 | |
|
| 6 | 314 | | message = CleanString( message ); |
| 11 | 315 | | if( message.Length <= 0 ) return false; |
| | 316 | |
|
| 1 | 317 | | LogImpl.Info( message ); |
| 1 | 318 | | return true; |
| 23 | 319 | | } |
| | 320 | |
|
| | 321 | | /// <summary>Logs an informational message with arguments.</summary> |
| | 322 | | /// <param name="message">Composite format message string to log.</param> |
| | 323 | | /// <param name="args">An object array that contains zero or more objects to format.</param> |
| | 324 | | /// <returns><see langword="true"/> if the message was logged, otherwise <see langword="false"/> is returned.</retur |
| | 325 | | public bool Info( string message, params object[] args ) |
| 31 | 326 | | { |
| 47 | 327 | | if( !CanLog( LogSeverity.Information ) ) return false; |
| | 328 | |
|
| 15 | 329 | | message = CleanString( message ); |
| 25 | 330 | | if( message.Length <= 0 || null == args ) return false; |
| | 331 | |
|
| 5 | 332 | | LogImpl.Info( string.Format( message, args ) ); |
| 5 | 333 | | return true; |
| 31 | 334 | | } |
| | 335 | |
|
| | 336 | | #endregion |
| | 337 | |
|
| | 338 | | #region Logging Warning |
| | 339 | |
|
| | 340 | | /// <summary>Logs a warning message.</summary> |
| | 341 | | /// <param name="message">Message text to log.</param> |
| | 342 | | /// <returns><see langword="true"/> if the message was logged, otherwise <see langword="false"/> is returned.</retur |
| | 343 | | public bool Warn( string message ) |
| 23 | 344 | | { |
| 23 | 345 | | WarnCount++; |
| 39 | 346 | | if( !CanLog( LogSeverity.Warning ) ) return false; |
| | 347 | |
|
| 7 | 348 | | message = CleanString( message ); |
| 8 | 349 | | if( message.Length <= 0 ) return false; |
| | 350 | |
|
| 6 | 351 | | LogImpl.Warn( message ); |
| 6 | 352 | | return true; |
| 23 | 353 | | } |
| | 354 | |
|
| | 355 | | /// <summary>Logs a warning message with arguments.</summary> |
| | 356 | | /// <param name="message">Composite format message string to log.</param> |
| | 357 | | /// <param name="args">An object array that contains zero or more objects to format.</param> |
| | 358 | | /// <returns><see langword="true"/> if the message was logged, otherwise <see langword="false"/> is returned.</retur |
| | 359 | | public bool Warn( string message, params object[] args ) |
| 19 | 360 | | { |
| 19 | 361 | | WarnCount++; |
| 35 | 362 | | if( !CanLog( LogSeverity.Warning ) ) return false; |
| | 363 | |
|
| 3 | 364 | | message = CleanString( message ); |
| 5 | 365 | | if( message.Length <= 0 || null == args ) return false; |
| | 366 | |
|
| 1 | 367 | | LogImpl.Warn( string.Format( message, args ) ); |
| 1 | 368 | | return true; |
| 19 | 369 | | } |
| | 370 | |
|
| | 371 | | #endregion |
| | 372 | |
|
| | 373 | | #region Logging Error |
| | 374 | |
|
| | 375 | | /// <summary>Logs an error message.</summary> |
| | 376 | | /// <param name="message">Message text to log.</param> |
| | 377 | | /// <returns><see langword="true"/> if the message was logged, otherwise <see langword="false"/> is returned.</retur |
| | 378 | | public bool Error( string message ) |
| 19 | 379 | | { |
| 19 | 380 | | ErrorCount++; |
| 35 | 381 | | if( !CanLog( LogSeverity.Error ) ) return false; |
| | 382 | |
|
| 3 | 383 | | message = CleanString( message ); |
| 4 | 384 | | if( message.Length <= 0 ) return false; |
| | 385 | |
|
| 2 | 386 | | LogImpl.Error( message ); |
| 2 | 387 | | return true; |
| 19 | 388 | | } |
| | 389 | |
|
| | 390 | | /// <summary>Logs an error message with arguments.</summary> |
| | 391 | | /// <param name="message">Composite format message string to log.</param> |
| | 392 | | /// <param name="args">An object array that contains zero or more objects to format.</param> |
| | 393 | | /// <returns><see langword="true"/> if the message was logged, otherwise <see langword="false"/> is returned.</retur |
| | 394 | | public bool Error( string message, params object[] args ) |
| 19 | 395 | | { |
| 19 | 396 | | ErrorCount++; |
| 35 | 397 | | if( !CanLog( LogSeverity.Error ) ) return false; |
| | 398 | |
|
| 3 | 399 | | message = CleanString( message ); |
| 5 | 400 | | if( message.Length <= 0 || null == args ) return false; |
| | 401 | |
|
| 1 | 402 | | LogImpl.Error( string.Format( message, args ) ); |
| 1 | 403 | | return true; |
| 19 | 404 | | } |
| | 405 | |
|
| | 406 | | /// <summary>Logs an error message with an exception.</summary> |
| | 407 | | /// <param name="message">Message text to log.</param> |
| | 408 | | /// <param name="exception">Exception to log.</param> |
| | 409 | | /// <returns><see langword="true"/> if the message was logged, otherwise <see langword="false"/> is returned.</retur |
| | 410 | | public bool Error( string message, Exception exception ) |
| 18 | 411 | | { |
| 18 | 412 | | ErrorCount++; |
| 34 | 413 | | if( !CanLog( LogSeverity.Error ) ) return false; |
| 2 | 414 | | message = CleanString( message ); |
| | 415 | |
|
| 2 | 416 | | LogImpl.Error( message, exception ); |
| 2 | 417 | | return true; |
| 18 | 418 | | } |
| | 419 | |
|
| | 420 | | /// <summary>Logs an exception.</summary> |
| | 421 | | /// <param name="exception">Exception to log.</param> |
| | 422 | | /// <returns><see langword="true"/> if the message was logged, otherwise <see langword="false"/> is returned.</retur |
| | 423 | | public bool Error( Exception exception ) |
| 18 | 424 | | { |
| 18 | 425 | | ErrorCount++; |
| 34 | 426 | | if( !CanLog( LogSeverity.Error ) ) return false; |
| | 427 | |
|
| 2 | 428 | | LogImpl.Error( exception ); |
| 2 | 429 | | return true; |
| 18 | 430 | | } |
| | 431 | |
|
| | 432 | | #endregion |
| | 433 | |
|
| | 434 | | #region Logging Fatal |
| | 435 | |
|
| | 436 | | /// <summary>Logs a fatal error message.</summary> |
| | 437 | | /// <param name="message">Message text to log.</param> |
| | 438 | | /// <returns><see langword="true"/> if the message was logged, otherwise <see langword="false"/> is returned.</retur |
| | 439 | | public bool Fatal( string message ) |
| 20 | 440 | | { |
| 20 | 441 | | FatalCount++; |
| 36 | 442 | | if( !CanLog( LogSeverity.Fatal ) ) return false; |
| | 443 | |
|
| 4 | 444 | | message = CleanString( message ); |
| 5 | 445 | | if( message.Length <= 0 ) return false; |
| | 446 | |
|
| 3 | 447 | | LogImpl.Fatal( message ); |
| 3 | 448 | | return true; |
| 20 | 449 | | } |
| | 450 | |
|
| | 451 | | /// <summary>Logs a fatal error message with arguments.</summary> |
| | 452 | | /// <param name="message">Composite format message string to log.</param> |
| | 453 | | /// <param name="args">An object array that contains zero or more objects to format.</param> |
| | 454 | | /// <returns><see langword="true"/> if the message was logged, otherwise <see langword="false"/> is returned.</retur |
| | 455 | | public bool Fatal( string message, params object[] args ) |
| 19 | 456 | | { |
| 19 | 457 | | FatalCount++; |
| 35 | 458 | | if( !CanLog( LogSeverity.Fatal ) ) return false; |
| | 459 | |
|
| 3 | 460 | | message = CleanString( message ); |
| 5 | 461 | | if( message.Length <= 0 || null == args ) return false; |
| | 462 | |
|
| 1 | 463 | | LogImpl.Fatal( string.Format( message, args ) ); |
| 1 | 464 | | return true; |
| 19 | 465 | | } |
| | 466 | |
|
| | 467 | | /// <summary>Logs a fatal exception.</summary> |
| | 468 | | /// <param name="exception">Exception to log.</param> |
| | 469 | | /// <returns><see langword="true"/> if the message was logged, otherwise <see langword="false"/> is returned.</retur |
| | 470 | | public bool Fatal( Exception exception ) |
| 1 | 471 | | { |
| 1 | 472 | | return Log( GenericException.FormatException( exception ), LogSeverity.Fatal ); |
| 1 | 473 | | } |
| | 474 | |
|
| | 475 | | #endregion |
| | 476 | |
|
| | 477 | | #region Logging Debug |
| | 478 | |
|
| | 479 | | /// <summary>Logs a debugging message.</summary> |
| | 480 | | /// <param name="message">Message text to log.</param> |
| | 481 | | /// <returns><see langword="true"/> if the message was logged, otherwise <see langword="false"/> is returned.</retur |
| | 482 | | public bool Debug( string message ) |
| 22 | 483 | | { |
| 38 | 484 | | if( !CanLog( LogSeverity.Debug ) ) return false; |
| | 485 | |
|
| 6 | 486 | | message = CleanString( message ); |
| 11 | 487 | | if( message.Length <= 0 ) return false; |
| | 488 | |
|
| 1 | 489 | | LogImpl.Debug( message ); |
| 1 | 490 | | return true; |
| 22 | 491 | | } |
| | 492 | |
|
| | 493 | | /// <summary>Logs a debugging message with arguments.</summary> |
| | 494 | | /// <param name="message">Composite format message string to log.</param> |
| | 495 | | /// <param name="args">An object array that contains zero or more objects to format.</param> |
| | 496 | | /// <returns><see langword="true"/> if the message was logged, otherwise <see langword="false"/> is returned.</retur |
| | 497 | | public bool Debug( string message, params object[] args ) |
| 31 | 498 | | { |
| 47 | 499 | | if( !CanLog( LogSeverity.Debug ) ) return false; |
| | 500 | |
|
| 15 | 501 | | message = CleanString( message ); |
| 25 | 502 | | if( message.Length <= 0 || null == args ) return false; |
| | 503 | |
|
| 5 | 504 | | LogImpl.Debug( string.Format( message.Trim(), args ) ); |
| 5 | 505 | | return true; |
| 31 | 506 | | } |
| | 507 | |
|
| | 508 | | #endregion |
| | 509 | |
|
| | 510 | | #endregion |
| | 511 | |
|
| | 512 | | #region Log File Methods |
| | 513 | |
|
| | 514 | | /// <summary>Sets the location of the log file and optionally, the log file name.</summary> |
| | 515 | | /// <param name="logDirectory">Location of the log file.</param> |
| | 516 | | /// <param name="logFileName">Name of the log file.</param> |
| | 517 | | /// <exception cref="ArgumentException">Thrown when one of the arguments provided to a method is not valid.</excepti |
| | 518 | | /// <exception cref="IOException">Thrown when an I/O error occurs.</exception> |
| | 519 | | /// <exception cref="NotSupportedException">Thrown when an invoked method is not supported, or when there |
| | 520 | | /// is an attempt to read, seek, or write to a stream that does not support the invoked functionality.</exception> |
| | 521 | | /// <exception cref="SecurityException">Thrown when a security error is detected.</exception> |
| | 522 | | public void SetLogFile( string logDirectory, string logFileName = "" ) |
| 2 | 523 | | { |
| | 524 | | // Check the parameter values |
| 2 | 525 | | logDirectory = CleanString( logDirectory ); |
| 2 | 526 | | logFileName = CleanString( logFileName ); |
| | 527 | |
|
| | 528 | | // Check that the directory path is valid |
| 2 | 529 | | _ = new DirectoryInfo( logDirectory ); |
| | 530 | |
|
| | 531 | | // Process the directory first as it could contain the file name as well |
| 1 | 532 | | if( logDirectory.Length > 0 ) |
| 1 | 533 | | { |
| 1 | 534 | | logDirectory = Path.GetFullPath( logDirectory ); |
| | 535 | |
|
| | 536 | | // If a file extension is found then a file name is also present |
| 1 | 537 | | string ext = Path.GetExtension( logDirectory ); |
| 1 | 538 | | if( ext.Length > 0 & logFileName.Length == 0 ) |
| 1 | 539 | | { |
| 1 | 540 | | logFileName = Path.GetFileName( logDirectory ); |
| 1 | 541 | | logDirectory = Path.GetDirectoryName( logDirectory ); |
| 1 | 542 | | } |
| 1 | 543 | | } |
| | 544 | |
|
| 1 | 545 | | if( logFileName.Length > 0 ) |
| 1 | 546 | | { |
| | 547 | | // Check that the log file name is valid |
| 1 | 548 | | logFileName = Path.GetFileName( logFileName ); |
| 1 | 549 | | } |
| | 550 | |
|
| | 551 | | // Set the implementation log file location and name |
| 1 | 552 | | LogImpl.SetLogFile( logDirectory, logFileName ); |
| 1 | 553 | | } |
| | 554 | |
|
| | 555 | | private static List<FileInfo> GetFileList( DirectoryInfo dir, string logNameMask ) |
| 3 | 556 | | { |
| 3 | 557 | | List<FileInfo> rtn = new List<FileInfo>(); |
| | 558 | |
|
| | 559 | | // Check if the directory contains any log files |
| 3 | 560 | | FileInfo[] logFiles = dir.GetFiles( logNameMask ); |
| 3 | 561 | | if( logFiles.Length == 0 ) |
| 1 | 562 | | { |
| 1 | 563 | | return rtn; |
| | 564 | | } |
| | 565 | |
|
| | 566 | | // Create list of log files that are not read-only |
| 12 | 567 | | foreach( var fi in logFiles ) |
| 3 | 568 | | { |
| | 569 | | // Exclude read-only files from deletion |
| 3 | 570 | | if( !fi.Attributes.HasFlag( FileAttributes.ReadOnly ) ) |
| 3 | 571 | | { |
| 3 | 572 | | rtn.Add( fi ); |
| 3 | 573 | | } |
| 3 | 574 | | } |
| | 575 | |
|
| 2 | 576 | | return rtn; |
| 3 | 577 | | } |
| | 578 | |
|
| | 579 | | /// <summary>Removes the oldest non-read-only log files in a directory.</summary> |
| | 580 | | /// <param name="directory">Directory containing the log files.</param> |
| | 581 | | /// <param name="logNameMask">Search pattern in the form [LogFile]*.[ext] of the log file names.</param> |
| | 582 | | /// <param name="maxFiles">Maximum number of log files to keep.</param> |
| | 583 | | /// <returns><see langword="true"/> if any log files have been removed, otherwise <see langword="false"/> is returne |
| | 584 | | /// <example> |
| | 585 | | /// In a method that needs to remove old log files: |
| | 586 | | /// <code lang="C#"> |
| | 587 | | /// var directory = @"C:\Temp\Logs" ); |
| | 588 | | /// const string mask = "LogfileName*.log"; |
| | 589 | | /// const int maxLogFiles = 50; |
| | 590 | | /// logging.RemoveLogs( directory, mask, maxLogFiles ); |
| | 591 | | /// </code> |
| | 592 | | /// </example> |
| | 593 | | /// <exception cref="ArgumentException">Thrown when one of the arguments provided to a method is not valid.</excepti |
| | 594 | | /// <exception cref="IOException">Thrown when an I/O error occurs.</exception> |
| | 595 | | /// <exception cref="SecurityException">Thrown when a security error is detected.</exception> |
| | 596 | | /// <exception cref="UnauthorizedAccessException">Thrown when the operating system denies access because of an I/O e |
| | 597 | | public bool RemoveLogs( string directory, string logNameMask, int maxFiles = 0 ) |
| 8 | 598 | | { |
| 8 | 599 | | DirectoryInfo dir = new DirectoryInfo( directory ); |
| | 600 | |
|
| | 601 | | // Check the required parameters have been passed |
| 7 | 602 | | if( !dir.Exists || string.IsNullOrEmpty( logNameMask ) || maxFiles <= 0 ) |
| 4 | 603 | | { |
| 4 | 604 | | return false; |
| | 605 | | } |
| | 606 | |
|
| 3 | 607 | | List<FileInfo> list = GetFileList( dir, logNameMask ); |
| 5 | 608 | | if( list.Count == 0 ) { return false; } |
| | 609 | |
|
| | 610 | | // Check that file count is greater than maximum number |
| 2 | 611 | | if( list.Count <= maxFiles ) |
| 1 | 612 | | { |
| 1 | 613 | | return false; |
| | 614 | | } |
| | 615 | |
|
| | 616 | | // Sort in ascending sequence by last written date/time |
| 2 | 617 | | list.Sort( ( x, y ) => x.LastWriteTime.CompareTo( y.LastWriteTime ) ); |
| | 618 | |
|
| | 619 | | // Delete old log files |
| 1 | 620 | | maxFiles = list.Count - maxFiles; |
| 1 | 621 | | int count = 0; |
| 4 | 622 | | for( var i = 0; i < maxFiles; i++ ) |
| 1 | 623 | | { |
| 1 | 624 | | FileInfo fi = list[i]; |
| 1 | 625 | | fi.Delete(); |
| 1 | 626 | | count++; |
| 1 | 627 | | } |
| | 628 | |
|
| 1 | 629 | | return count > 0; |
| 7 | 630 | | } |
| | 631 | |
|
| | 632 | | #endregion |
| | 633 | | } |
| | 634 | | } |