public void SourceLocationShouldScanExample14()
{
var loc = new LocalSourceLocation();
loc.LastCompletedScan = DateTime.Now.AddHours(-1250);
loc.Priority = ArchivialLibrary.Files.FileBackupPriority.Low;
var options = new ArchivialLibrary.Folders.ScanFrequencies();
options.LowPriorityScanFrequencyInHours = 72;
Assert.IsTrue(loc.ShouldScan(options));
}
public void SourceLocationShouldScanExample5()
{
var loc = new LocalSourceLocation();
loc.LastCompletedScan = DateTime.Now.AddMinutes(-61);
loc.Priority = ArchivialLibrary.Files.FileBackupPriority.High;
var options = new ArchivialLibrary.Folders.ScanFrequencies();
options.HighPriorityScanFrequencyInHours = 1;
Assert.IsTrue(loc.ShouldScan(options));
}
public void SourceLocationShouldScanExample8()
{
var loc = new LocalSourceLocation();
loc.LastCompletedScan = DateTime.Now.AddHours(-23);
loc.Priority = ArchivialLibrary.Files.FileBackupPriority.Medium;
var options = new ArchivialLibrary.Folders.ScanFrequencies();
options.MedPriorityScanFrequencyInHours = 24;
Assert.IsFalse(loc.ShouldScan(options));
}
public void SourceLocationShouldScanExample1()
{
var loc = new LocalSourceLocation();
loc.LastCompletedScan = null;
var options = new ArchivialLibrary.Folders.ScanFrequencies();
options.LowPriorityScanFrequencyInHours = 72;
options.MedPriorityScanFrequencyInHours = 24;
options.HighPriorityScanFrequencyInHours = 1;
Assert.IsTrue(loc.ShouldScan(options));
}
/// <summary>
/// Checks to see if a source location is ready to scan again.
/// </summary>
/// <remarks>
/// The source location is ready to scan again once enough time has elapsed since the previous scan.
/// </remarks>
/// <returns></returns>
public bool ShouldScan(ScanFrequencies options)
{
if (options == null)
{
throw new ArgumentNullException(nameof(options));
}
if (LastCompletedScan == null)
{
// no scan has completed before
return(true);
}
DateTime lastAcceptableScanPoint;
if (Priority == FileBackupPriority.Low)
{
lastAcceptableScanPoint = DateTime.Now.AddHours(-options.LowPriorityScanFrequencyInHours);
}
else if (Priority == FileBackupPriority.Medium)
{
lastAcceptableScanPoint = DateTime.Now.AddHours(-options.MedPriorityScanFrequencyInHours);
}
else if (Priority == FileBackupPriority.High)
{
lastAcceptableScanPoint = DateTime.Now.AddHours(-options.HighPriorityScanFrequencyInHours);
}
else if (Priority == FileBackupPriority.Meta)
{
lastAcceptableScanPoint = DateTime.Now.AddHours(-options.HighPriorityScanFrequencyInHours);
}
else
{
throw new InvalidOperationException("Unexpected backup priority specified: " + Priority);
}
if (LastCompletedScan.Value < lastAcceptableScanPoint)
{
// a scan hasn't been completed recently.
return(true);
}
else
{
// scan already completed recently.
return(false);
}
}