private IAppender CreateSiteAppender()
{
OrchardFileAppender appender = new OrchardFileAppender();
appender.Name = GetAppenderName();
appender.File = GetAppenderFileName();
appender.AppendToFile = true;
// Allow extended character sets
appender.Encoding = Encoding.UTF8;
// Immediately flush on error to avoid data loss
appender.ImmediateFlush = true;
// Filename will also depend on date
appender.StaticLogFileName = false;
appender.RollingStyle = RollingFileAppender.RollingMode.Date;
appender.DatePattern = $"{LaserAuditTrailHelper.GetAppenderDatePattern()}'.{LaserAuditTrailHelper.GetAppenderFileExtension()}'";
// Prevent Orchard from displaying locking debug messages
appender.LockingModel = new FileAppender.MinimalLock();
// Filters
var stringMatchFilter = new log4net.Filter.StringMatchFilter();
stringMatchFilter.StringToMatch = _logMatchString;
appender.AddFilter(stringMatchFilter);
appender.AddFilter(new log4net.Filter.DenyAllFilter());
// Log Layout
var layout = new log4net.Layout.PatternLayout(
@"%date %logger - %P{Tenant} - %level% [ExecutionId=%P{ExecutionId}]%newline[%P{Url}]%newline%message%newline "
);
layout.ActivateOptions();
appender.Layout = layout;
appender.ActivateOptions();
return(appender);
}
public void Sweep()
{
Logger.Debug("Beginning sweep for TrailLogTrimmingBackgroundTask.");
try {
// This task should look for audit trail log files older than a timespan
// and delete them if any are found.
if (GetIsTimeToTrim())
{
var logFilePath = LaserAuditTrailHelper.GetLogsFilePath();
var logFileExtension = LaserAuditTrailHelper.GetAppenderFileExtension();
var fileNameBeginning = Path.Combine(
logFilePath,
LaserAuditTrailHelper.GetAppenderFileName(
GetSiteSettings().SiteName))
.Replace(Path.DirectorySeparatorChar, '/');
var myLogs = _appDataFolder
.ListFiles(logFilePath)
.Where(fn => fn.StartsWith(fileNameBeginning));
// get the logs older than the specific timespan and delete them
// Retention timespan: anything older will be deleted
var retentionPeriod = TimeSpan.FromDays(GetAuditTrailSettings().RetentionPeriod);
var dateThreshold = (_clock.UtcNow.EndOfDay() - retentionPeriod);
foreach (var fileName in myLogs)
{
var lastWriteTime = _appDataFolder.GetFileLastWriteTimeUtc(fileName);
if (lastWriteTime <= dateThreshold)
{
// file is older than the limit for retention. Delete it.
_appDataFolder.DeleteFile(fileName);
}
}
}
} catch (Exception ex) {
Logger.Error(ex, "Error during sweep for TrailLogTrimmingBackgroundTask.");
} finally {
Logger.Debug("Ending sweep for TrailLogTrimmingBackgroundTask.");
}
}
private string GetAppenderFileName()
{
return(Path.Combine(
LaserAuditTrailHelper.GetAppenderFilePath(),
LaserAuditTrailHelper.GetAppenderFileName(GetSiteSettings().SiteName)));
}
private string GetAppenderName()
{
return(LaserAuditTrailHelper.GetAppenderName(GetSiteSettings().SiteName));
}
