public void FileLoggerLocalTime()
{
using (var localTimeLogger = new FileBackedLogger(
new LogConfiguration("loctime", LogType.Text, LogManager.DefaultSubscriptions)
{
Directory = ".",
RotationInterval = LogManager.MinRotationInterval,
TimestampLocal = true,
}, DateTime.UtcNow))
{
using (var utcTimeLogger = new FileBackedLogger(
new LogConfiguration("utctime", LogType.Text, LogManager.DefaultSubscriptions)
{
Directory = ".",
RotationInterval = LogManager.MinRotationInterval,
TimestampLocal = false,
}, DateTime.UtcNow))
{
Assert.AreEqual(localTimeLogger.FilenameTemplate,
LogManager.DefaultLocalTimeFilenameTemplate + FileBackedLogger.TextLogExtension);
Assert.AreEqual(utcTimeLogger.FilenameTemplate,
LogManager.DefaultFilenameTemplate + FileBackedLogger.TextLogExtension);
// local time filename should be longer. (has timezone)
Assert.IsTrue(localTimeLogger.Logger.Filename.Length > utcTimeLogger.Logger.Filename.Length);
}
}
}
public void CreateFileBackedLogger()
{
LogManager.Start();
try
{
new FileBackedLogger(new LogConfiguration("badlogger", LogType.MemoryBuffer,
LogManager.DefaultSubscriptions), DateTime.UtcNow);
Assert.Fail();
}
catch (ArgumentException) { }
using (var logger = new FileBackedLogger(
new LogConfiguration("testfile", LogType.Text, LogManager.DefaultSubscriptions)
{
Directory = Path.GetFullPath("."),
RotationInterval = 0,
FilenameTemplate = "{0}"
}, DateTime.UtcNow))
{
Assert.IsNotNull(logger.Logger);
Assert.AreEqual(0, logger.RotationInterval);
string fullFilename = (logger.Logger as TextFileLogger).Filename;
string dName = Path.GetDirectoryName(fullFilename);
Assert.AreEqual(dName, Path.GetFullPath("."));
string fName = Path.GetFileName(fullFilename);
Assert.AreEqual(fName, "testfile.log");
}
LogManager.Shutdown();
}
private IEventLogger CreateFileLogger(LoggerType type, string baseName, string directory, int bufferSizeMB,
int rotation, string filenameTemplate, bool timestampLocal)
{
if (rotation < 0 && DefaultRotate)
{
rotation = this.defaultRotationInterval;
}
if (rotation > 0)
{
CheckRotationInterval(rotation);
}
CheckFileBufferSize(bufferSizeMB);
GetQualifiedDirectory(ref directory);
if (baseName.IndexOfAny(Path.GetInvalidFileNameChars()) != -1)
{
throw new ArgumentException("base filename contains invalid characters", "baseName");
}
lock (this.loggersLock)
{
if (this.GetNamedFileLogger(baseName) != null)
{
throw new InvalidOperationException("logger named " + baseName + " already exists");
}
var logger = new FileBackedLogger(baseName, directory, type, bufferSizeMB, rotation, filenameTemplate,
timestampLocal);
this.fileLoggers[baseName] = logger;
return(logger.Logger);
}
}
/// <summary>
/// Retrieve the named file logger.
/// </summary>
/// <param name="name">Name of the logger.</param>
/// <returns>The logger, or null if no logger of the given name exists.</returns>
public static IEventLogger GetFileLogger(string name)
{
FileBackedLogger logger = singleton.GetNamedFileLogger(name);
if (logger != null)
{
return(logger.Logger);
}
return(null);
}
public void CheckedFileLoggerRotation()
{
// Create a file with a 5 minute rotation time, then attempt to rotate it every minute and ensure it
// only changes names once.
DateTime now = DateTime.UtcNow;
using (var utcLogger = new FileBackedLogger("loctime", ".", LoggerType.TextLogFile,
LogManager.DefaultFileBufferSizeMB, 300,
FileBackedLogger.DefaultFilenameTemplate, false))
{
using (var localLogger = new FileBackedLogger("utctime", ".", LoggerType.TextLogFile,
LogManager.DefaultFileBufferSizeMB, 300,
FileBackedLogger.DefaultFilenameTemplate, true))
{
Assert.IsNotNull(utcLogger);
utcLogger.CheckedRotate(now);
string currentUtcFilename = utcLogger.Logger.Filename;
int utcFilenameChanges = 0;
Assert.IsNotNull(localLogger);
localLogger.CheckedRotate(now);
string currentLocalFilename = localLogger.Logger.Filename;
int localFilenameChanges = 0;
for (int i = 0; i < 5; ++i)
{
now += new TimeSpan(0, 1, 0);
utcLogger.CheckedRotate(now);
localLogger.CheckedRotate(now);
if (
string.Compare(currentUtcFilename, utcLogger.Logger.Filename,
StringComparison.OrdinalIgnoreCase) !=
0)
{
++utcFilenameChanges;
currentUtcFilename = utcLogger.Logger.Filename;
}
if (
string.Compare(currentLocalFilename, localLogger.Logger.Filename,
StringComparison.OrdinalIgnoreCase) !=
0)
{
++localFilenameChanges;
currentLocalFilename = localLogger.Logger.Filename;
}
}
Assert.AreEqual(1, utcFilenameChanges, "UTC timestamp filename changed more than once.");
Assert.AreEqual(1, localFilenameChanges, "Local timestamp filename changed more than once.");
}
}
}
public void CheckedFileLoggerRotation()
{
// Create a file with a 5 minute rotation time, then attempt to rotate it every minute and ensure it
// only changes names once.
DateTime now = DateTime.UtcNow;
using (var utcLogger = new FileBackedLogger("loctime", ".", LoggerType.TextLogFile,
LogManager.DefaultFileBufferSizeMB, 300,
FileBackedLogger.DefaultFilenameTemplate, false))
{
using (var localLogger = new FileBackedLogger("utctime", ".", LoggerType.TextLogFile,
LogManager.DefaultFileBufferSizeMB, 300,
FileBackedLogger.DefaultFilenameTemplate, true))
{
Assert.IsNotNull(utcLogger);
utcLogger.CheckedRotate(now);
string currentUtcFilename = utcLogger.Logger.Filename;
int utcFilenameChanges = 0;
Assert.IsNotNull(localLogger);
localLogger.CheckedRotate(now);
string currentLocalFilename = localLogger.Logger.Filename;
int localFilenameChanges = 0;
for (int i = 0; i < 5; ++i)
{
now += new TimeSpan(0, 1, 0);
utcLogger.CheckedRotate(now);
localLogger.CheckedRotate(now);
if (
string.Compare(currentUtcFilename, utcLogger.Logger.Filename,
StringComparison.OrdinalIgnoreCase) !=
0)
{
++utcFilenameChanges;
currentUtcFilename = utcLogger.Logger.Filename;
}
if (
string.Compare(currentLocalFilename, localLogger.Logger.Filename,
StringComparison.OrdinalIgnoreCase) !=
0)
{
++localFilenameChanges;
currentLocalFilename = localLogger.Logger.Filename;
}
}
Assert.AreEqual(1, utcFilenameChanges, "UTC timestamp filename changed more than once.");
Assert.AreEqual(1, localFilenameChanges, "Local timestamp filename changed more than once.");
}
}
}
/// <summary>
/// Validate the full set of configuration. Throws InvalidConfigurationException in the event of invalid
/// applied configuration.
/// </summary>
public void Validate()
{
if (this.Type == LogType.Network)
{
if (this.hostname == null)
{
throw new InvalidConfigurationException($"Log {this.Name} has no hostname set.");
}
if (this.Port == 0)
{
throw new InvalidConfigurationException($"Log {this.Name} has no port set.");
}
}
if (this.Type.HasFeature(Features.FileBacked))
{
if (this.RotationInterval > 0 &&
!FileBackedLogger.IsValidFilenameTemplate(this.FilenameTemplate,
TimeSpan.FromSeconds(this.RotationInterval)))
{
throw new InvalidConfigurationException(
$"Rotation interval {this.RotationInterval} cannot be used with template {this.FilenameTemplate}.");
}
var retentionPolicySet = (this.MaximumAge > TimeSpan.Zero || this.MaximumSize > 0);
if (retentionPolicySet && this.RotationInterval <= 0)
{
throw new InvalidConfigurationException(
$"Log {this.Name} has retention configuration but is not rotated.");
}
if (this.MaximumAge > TimeSpan.Zero)
{
if (this.MaximumAge < TimeSpan.FromSeconds(this.RotationInterval) ||
this.MaximumAge.Ticks % TimeSpan.TicksPerSecond != 0)
{
throw new InvalidConfigurationException(
$"Log {this.Name} has a maximum age which is either shorter than the rotation interval or not evenly divisible by seconds.");
}
}
}
}
public void FileLoggerLocalTime()
{
using (var localTimeLogger = new FileBackedLogger("loctime", ".", LoggerType.TextLogFile,
LogManager.DefaultFileBufferSizeMB, 1,
FileBackedLogger.DefaultFilenameTemplate, true))
{
using (var utcTimeLogger = new FileBackedLogger("utctime", ".", LoggerType.TextLogFile,
LogManager.DefaultFileBufferSizeMB, 1,
FileBackedLogger.DefaultFilenameTemplate, false))
{
Assert.AreEqual(localTimeLogger.FilenameTemplate,
FileBackedLogger.DefaultLocalTimeFilenameTemplate +
FileBackedLogger.TextLogExtension);
Assert.AreEqual(utcTimeLogger.FilenameTemplate,
FileBackedLogger.DefaultFilenameTemplate + FileBackedLogger.TextLogExtension);
// local time filename should be longer. (has timezone)
Assert.IsTrue(localTimeLogger.Logger.Filename.Length > utcTimeLogger.Logger.Filename.Length);
}
}
}
public void LogCreationAndDestruction()
{
LogManager.Start();
var consoleLogger = LogManager.GetLogger <ConsoleLogger>(null);
Assert.IsNotNull(consoleLogger);
try
{
LogManager.DestroyLogger(consoleLogger);
Assert.Fail();
}
catch (ArgumentException) { }
var config = new LogConfiguration("testlog", LogType.Text, LogManager.DefaultSubscriptions);
var someLogger = LogManager.CreateLogger <TextFileLogger>(config);
Assert.IsNotNull(someLogger);
Assert.AreSame(someLogger, LogManager.GetLogger <TextFileLogger>("testlog"));
LogManager.DestroyLogger(someLogger);
Assert.IsNull(LogManager.GetLogger <TextFileLogger>("testlog"));
FileBackedLogger externalLogger = null;
try
{
externalLogger =
new FileBackedLogger(new LogConfiguration("external", LogType.Text, LogManager.DefaultSubscriptions)
{
Directory = "."
}, DateTime.UtcNow);
LogManager.DestroyLogger(externalLogger.Logger);
Assert.Fail();
}
catch (ArgumentException) { }
finally
{
externalLogger?.Dispose();
}
LogManager.Shutdown();
}
public void LogWrangling()
{
LogManager.Start();
LogManager.SetConfiguration(""); // wipe any config
Assert.IsNotNull(LogManager.ConsoleLogger);
try
{
LogManager.DestroyLogger(LogManager.ConsoleLogger);
Assert.Fail();
}
catch (ArgumentException) { }
IEventLogger someLogger = LogManager.CreateTextLogger("testlog");
Assert.IsNotNull(someLogger as TextFileLogger);
Assert.AreSame(someLogger, LogManager.GetFileLogger("testlog"));
LogManager.DestroyLogger(someLogger);
Assert.IsNull(LogManager.GetFileLogger("testlog"));
FileBackedLogger externalLogger = null;
try
{
externalLogger = new FileBackedLogger("external", ".", LoggerType.TextLogFile,
LogManager.DefaultFileBufferSizeMB,
1, FileBackedLogger.DefaultFilenameTemplate,
false);
LogManager.DestroyLogger(externalLogger.Logger);
Assert.Fail();
}
catch (ArgumentException) { }
finally
{
if (externalLogger != null)
{
externalLogger.Dispose();
}
}
LogManager.Shutdown();
}
public void CreateFileLoggerManager()
{
try
{
new FileBackedLogger("badlogger", ".", LoggerType.MemoryBuffer,
LogManager.DefaultFileBufferSizeMB, 0,
FileBackedLogger.DefaultFilenameTemplate,
false);
Assert.Fail();
}
catch (ArgumentException) { }
using (var logger = new FileBackedLogger("testfile", ".", LoggerType.TextLogFile,
LogManager.DefaultFileBufferSizeMB, 0, "{0}", false))
{
Assert.IsNotNull(logger.Logger);
Assert.AreEqual(0, logger.RotationInterval);
string fullFilename = (logger.Logger as TextFileLogger).Filename;
string dName = Path.GetDirectoryName(fullFilename);
Assert.AreEqual(dName, Path.GetFullPath("."));
string fName = Path.GetFileName(fullFilename);
Assert.AreEqual(fName, "testfile.log");
}
}
public void FileLoggerLocalTime()
{
using (var localTimeLogger = new FileBackedLogger("loctime", ".", LoggerType.TextLogFile,
LogManager.DefaultFileBufferSizeMB, 1,
FileBackedLogger.DefaultFilenameTemplate, true))
{
using (var utcTimeLogger = new FileBackedLogger("utctime", ".", LoggerType.TextLogFile,
LogManager.DefaultFileBufferSizeMB, 1,
FileBackedLogger.DefaultFilenameTemplate, false))
{
Assert.AreEqual(localTimeLogger.FilenameTemplate,
FileBackedLogger.DefaultLocalTimeFilenameTemplate +
FileBackedLogger.TextLogExtension);
Assert.AreEqual(utcTimeLogger.FilenameTemplate,
FileBackedLogger.DefaultFilenameTemplate + FileBackedLogger.TextLogExtension);
// local time filename should be longer. (has timezone)
Assert.IsTrue(localTimeLogger.Logger.Filename.Length > utcTimeLogger.Logger.Filename.Length);
}
}
}
public void CreateFileLoggerManager()
{
try
{
new FileBackedLogger("badlogger", ".", LoggerType.MemoryBuffer,
LogManager.DefaultFileBufferSizeMB, 0,
FileBackedLogger.DefaultFilenameTemplate,
false);
Assert.Fail();
}
catch (ArgumentException) { }
using (var logger = new FileBackedLogger("testfile", ".", LoggerType.TextLogFile,
LogManager.DefaultFileBufferSizeMB, 0, "{0}", false))
{
Assert.IsNotNull(logger.Logger);
Assert.AreEqual(0, logger.RotationInterval);
string fullFilename = (logger.Logger as TextFileLogger).Filename;
string dName = Path.GetDirectoryName(fullFilename);
Assert.AreEqual(dName, Path.GetFullPath("."));
string fName = Path.GetFileName(fullFilename);
Assert.AreEqual(fName, "testfile.log");
}
}
private static bool ParseLogNode(XmlNode xmlNode, LogConfiguration config)
{
bool clean = true;
foreach (XmlAttribute logAttribute in xmlNode.Attributes)
{
switch (logAttribute.Name.ToLower(CultureInfo.InvariantCulture))
{
case LogBufferSizeAttribute:
if (!int.TryParse(logAttribute.Value, out config.BufferSize) ||
!IsValidFileBufferSize(config.BufferSize))
{
InternalLogger.Write.InvalidConfiguration("invalid buffer size " + logAttribute.Value);
config.BufferSize = DefaultFileBufferSizeMB;
clean = false;
}
break;
case LogDirectoryAttribute:
if (!IsValidDirectory(logAttribute.Value))
{
InternalLogger.Write.InvalidConfiguration("invalid directory name " + logAttribute.Value);
clean = false;
}
else
{
config.Directory = logAttribute.Value;
}
break;
case LogFilenameTemplateAttribute:
if (!FileBackedLogger.IsValidFilenameTemplate(logAttribute.Value))
{
InternalLogger.Write.InvalidConfiguration("invalid filename template " + logAttribute.Value);
clean = false;
}
else
{
config.FilenameTemplate = logAttribute.Value;
}
break;
case LogTimestampLocal:
if (!bool.TryParse(logAttribute.Value, out config.TimestampLocal))
{
InternalLogger.Write.InvalidConfiguration("invalid timestamplocal value " + logAttribute.Value);
config.TimestampLocal = false;
clean = false;
}
break;
case LogRotationAttribute:
if (!int.TryParse(logAttribute.Value, out config.RotationInterval) ||
!IsValidRotationInterval(config.RotationInterval))
{
InternalLogger.Write.InvalidConfiguration("invalid rotation interval " + logAttribute.Value);
config.RotationInterval = DefaultRotationInterval;
clean = false;
}
break;
case LogHostnameAttribute:
if (Uri.CheckHostName(logAttribute.Value) == UriHostNameType.Unknown)
{
InternalLogger.Write.InvalidConfiguration("invalid hostname name " + logAttribute.Value);
clean = false;
}
else
{
config.Hostname = logAttribute.Value;
}
break;
case LogPortAttribute:
if (!int.TryParse(logAttribute.Value, out config.Port) ||
config.Port <= 0)
{
InternalLogger.Write.InvalidConfiguration("invalid port " + logAttribute.Value);
config.Port = 80;
clean = false;
}
break;
}
}
clean &= ParseLogSources(xmlNode, config);
clean &= ParseLogFilters(xmlNode, config);
return(clean);
}
public void TimeBasedRetention()
{
const string logName = "retention_time_test";
LogManager.Start();
var subscription = new[] { new EventProviderSubscription(TestLogger.Write, EventLevel.Verbose), };
var config = new LogConfiguration(logName, LogType.Text, subscription)
{
RotationInterval = 86400,
Directory = ".",
};
var files = new List <string>();
var startTime = new DateTime(1776, 7, 4, 0, 0, 0, DateTimeKind.Utc);
var endTime = startTime;
const int rotations = 14;
using (var log = new FileBackedLogger(config, startTime))
{
// XXX: this is cumbersome because of the way the file loggers are currently factored, needs fixing
// in future refactor.
var logger = (TextFileLogger)log.Logger;
config.Logger = logger;
files.Add(logger.Filename);
for (var i = 0; i < rotations; ++i)
{
TestLogger.Write.String("some string");
endTime = endTime + TimeSpan.FromSeconds(config.RotationInterval);
log.Rotate(endTime);
var newFile = logger.Filename;
Assert.IsFalse(files.Contains(newFile));
files.Add(logger.Filename);
}
TestLogger.Write.String("last string");
}
Assert.AreEqual(rotations + 1, files.Count);
for (var i = 0; i < files.Count; ++i)
{
// XXX: this is a bit gross but for each file we need to set its creation time manually, in the normal
// path we can trust wall time but that doesn't work here.
var f = files[i];
Assert.IsTrue(File.Exists(f));
File.SetCreationTimeUtc(f, startTime + TimeSpan.FromSeconds(config.RotationInterval * i));
}
const int maxDays = rotations / 2;
// XXX 2: have to re-create this because of the interplay between config + logger.
config = new LogConfiguration(logName, LogType.Text, subscription)
{
RotationInterval = 86400,
Directory = ".",
MaximumAge = TimeSpan.FromDays(maxDays),
};
startTime = endTime;
using (var log = new FileBackedLogger(config, startTime))
{
var logger = (TextFileLogger)log.Logger;
config.Logger = logger;
// expect the first half of 'maxDays' files to be gone.
for (var i = 0; i < files.Count; ++i)
{
if (i < maxDays)
{
Assert.IsFalse(File.Exists(files[i]));
}
else
{
Assert.IsTrue(File.Exists(files[i]));
}
}
}
LogManager.Shutdown();
}
public void LogWrangling()
{
LogManager.Start();
LogManager.SetConfiguration(""); // wipe any config
Assert.IsNotNull(LogManager.ConsoleLogger);
try
{
LogManager.DestroyLogger(LogManager.ConsoleLogger);
Assert.Fail();
}
catch (ArgumentException) { }
IEventLogger someLogger = LogManager.CreateTextLogger("testlog");
Assert.IsNotNull(someLogger as TextFileLogger);
Assert.AreSame(someLogger, LogManager.GetFileLogger("testlog"));
LogManager.DestroyLogger(someLogger);
Assert.IsNull(LogManager.GetFileLogger("testlog"));
FileBackedLogger externalLogger = null;
try
{
externalLogger = new FileBackedLogger("external", ".", LoggerType.TextLogFile,
LogManager.DefaultFileBufferSizeMB,
1, FileBackedLogger.DefaultFilenameTemplate,
false);
LogManager.DestroyLogger(externalLogger.Logger);
Assert.Fail();
}
catch (ArgumentException) { }
finally
{
if (externalLogger != null)
{
externalLogger.Dispose();
}
}
LogManager.Shutdown();
}
public void SizeBasedRetention()
{
const string logName = "retention_size_test";
const int maxSize = 5 * 1024 * 1024;
const int stringBytes = 32 * 1024;
var bigString = new string('.', stringBytes / 2); // 2 byte characters
LogManager.Start();
var subscription = new[] { new EventProviderSubscription(TestLogger.Write, EventLevel.Verbose), };
var config = new LogConfiguration(logName, LogType.Text, subscription)
{
RotationInterval = LogManager.MinRotationInterval,
Directory = ".",
};
var files = new List <string>();
var startTime = new DateTime(1776, 7, 4, 0, 0, 0, DateTimeKind.Utc);
var endTime = startTime;
const int rotations = (maxSize / stringBytes) * 2;
using (var log = new FileBackedLogger(config, startTime))
{
// XXX: this is cumbersome because of the way the file loggers are currently factored, needs fixing
// in future refactor.
var logger = (TextFileLogger)log.Logger;
config.Logger = logger;
files.Add(logger.Filename);
for (var i = 0; i < rotations; ++i)
{
TestLogger.Write.String(bigString);
endTime = endTime + TimeSpan.FromSeconds(config.RotationInterval);
log.Rotate(endTime);
var newFile = logger.Filename;
Assert.IsFalse(files.Contains(newFile));
files.Add(logger.Filename);
}
TestLogger.Write.String(bigString);
}
long actualSize = 0;
Assert.AreEqual(rotations + 1, files.Count);
for (var i = 0; i < files.Count; ++i)
{
// XXX: this is a bit gross but for each file we need to set its creation time manually, in the normal
// path we can trust wall time but that doesn't work here.
var f = files[i];
var info = new FileInfo(f);
Assert.IsTrue(info.Exists);
actualSize += info.Length;
File.SetCreationTimeUtc(f, startTime + TimeSpan.FromSeconds(config.RotationInterval * i));
}
// we want to determine the first file we expect to be gone by counting backwards over the size.
long totalSize = 0;
int firstRemaining = files.Count;
for (var i = files.Count - 1; i >= 0; --i)
{
var info = new FileInfo(files[i]);
totalSize += info.Length;
if (totalSize > maxSize)
{
firstRemaining = i + 1;
break;
}
}
Assert.AreNotEqual(files.Count, firstRemaining);
// XXX 2: have to re-create this because of the interplay between config + logger.
config = new LogConfiguration(logName, LogType.Text, subscription)
{
RotationInterval = 86400,
Directory = ".",
MaximumSize = maxSize,
};
startTime = endTime;
using (var log = new FileBackedLogger(config, startTime))
{
var logger = (TextFileLogger)log.Logger;
config.Logger = logger;
// Using the first remaining file detected above to ensure files we expected to go away have.
long remainingSize = 0;
for (var i = 0; i < files.Count; ++i)
{
var info = new FileInfo(files[i]);
if (i < firstRemaining)
{
Assert.IsFalse(info.Exists);
}
else
{
Assert.IsTrue(info.Exists);
remainingSize += info.Length;
}
}
Assert.IsTrue(remainingSize <= maxSize);
}
LogManager.Shutdown();
}
