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using System;
using System.Collections.Generic;
using System.Linq;
using Duplicati.Library.Interface;
using Duplicati.Library.Main;
using Duplicati.Library.Main.Database;
using Duplicati.Library.Main.Operation;
using NUnit.Framework;
namespace Duplicati.UnitTest
{
public class DeleteHandlerTests
{
private class Fileset : IListResultFileset, IEquatable<Fileset>
{
public long Version { get; }
public int IsFullBackup { get; }
public DateTime Time { get; }
public long FileCount { get; }
public long FileSizes { get; }
public Fileset(int version, int backupType, DateTime time)
{
this.Version = version;
this.IsFullBackup = backupType;
this.Time = time;
this.FileCount = 0;
this.FileSizes = 0;
}
public bool Equals(Fileset other)
{
if (ReferenceEquals(null, other))
{
return false;
}
if (ReferenceEquals(this, other))
{
return true;
}
return this.Version == other.Version && this.IsFullBackup == other.IsFullBackup && this.Time.Equals(other.Time) && this.FileCount == other.FileCount && this.FileSizes == other.FileSizes;
}
}
[Test]
[Category("DeleteHandler")]
public void KeepTimeRemover()
{
DateTime today = DateTime.Today;
List<IListResultFileset> filesets = new List<IListResultFileset>
{
new Fileset(0, BackupType.FULL_BACKUP, today.AddDays(-2)),
new Fileset(1, BackupType.FULL_BACKUP, today.AddDays(-1)),
new Fileset(2, BackupType.PARTIAL_BACKUP, today),
new Fileset(3, BackupType.PARTIAL_BACKUP, today.AddDays(1)),
};
// Although version 1 is older than the specified TimeSpan, we do not delete
// it because it is the most recent full backup.
TimeSpan timeSpan = new TimeSpan(1, 0, 0, 0);
IListResultFileset[] expectedFilesetsToRemove = {filesets[0]};
Random random = new Random();
Options options = new Options(new Dictionary<string, string> {{"keep-time", $"{(int) timeSpan.TotalSeconds}s"}});
KeepTimeRemover remover = new KeepTimeRemover(options);
IListResultFileset[] filesetsToRemove = remover.GetFilesetsToDelete(filesets.OrderBy(x => random.Next())).ToArray();
CollectionAssert.AreEquivalent(expectedFilesetsToRemove, filesetsToRemove);
// If there is a full backup within the specified TimeSpan, we can respect
// the TimeSpan strictly.
filesets.Add(new Fileset(4, BackupType.FULL_BACKUP, today.AddDays(2)));
CollectionAssert.AreEquivalent(expectedFilesetsToRemove, filesetsToRemove);
expectedFilesetsToRemove = filesets.Where(x => x.Time < options.KeepTime).ToArray();
filesetsToRemove = remover.GetFilesetsToDelete(filesets).ToArray();
CollectionAssert.AreEquivalent(expectedFilesetsToRemove, filesetsToRemove);
}
[Test]
[Category("DeleteHandler")]
public void KeepVersionsRemover()
{
IListResultFileset[] filesets =
{
new Fileset(0, BackupType.FULL_BACKUP, new DateTime(2000, 1, 1)),
new Fileset(1, BackupType.PARTIAL_BACKUP, new DateTime(2000, 1, 2)),
new Fileset(2, BackupType.FULL_BACKUP, new DateTime(2000, 1, 3)),
new Fileset(3, BackupType.PARTIAL_BACKUP, new DateTime(2000, 1, 4)),
new Fileset(4, BackupType.FULL_BACKUP, new DateTime(2000, 1, 5)),
new Fileset(5, BackupType.PARTIAL_BACKUP, new DateTime(2000, 1, 6)),
};
Options options = new Options(new Dictionary<string, string> {{"keep-versions", "2"}});
IListResultFileset[] expectedFilesetsToRemove =
{
filesets[0], // Delete; third oldest full backup.
filesets[1], // Delete; intermediate partial backup.
filesets[3] // Delete; intermediate partial backup.
};
Random random = new Random();
KeepVersionsRemover remover = new KeepVersionsRemover(options);
IListResultFileset[] filesetsToRemove = remover.GetFilesetsToDelete(filesets.OrderBy(x => random.Next())).ToArray();
CollectionAssert.AreEquivalent(expectedFilesetsToRemove, filesetsToRemove);
}
[Test]
[Category("DeleteHandler")]
public void RetentionPolicyRemover()
{
Options options = new Options(new Dictionary<string, string> {{"retention-policy", "1W:U,3M:1D,1Y:1W,U:1M"}});
DateTime now = DateTime.Now;
IListResultFileset[] filesets =
{
// Past week. These should all be retained.
new Fileset(0, BackupType.PARTIAL_BACKUP, now),
new Fileset(1, BackupType.FULL_BACKUP, now.AddMilliseconds(-1)),
new Fileset(2, BackupType.FULL_BACKUP, now.AddSeconds(-1)),
new Fileset(3, BackupType.PARTIAL_BACKUP, now.AddMinutes(-1)),
new Fileset(4, BackupType.PARTIAL_BACKUP, now.AddHours(-1)),
new Fileset(5, BackupType.PARTIAL_BACKUP, now.AddDays(-1)),
new Fileset(6, BackupType.FULL_BACKUP, now.AddDays(-6)),
// Past 3 months.
new Fileset(7, BackupType.FULL_BACKUP, now.AddDays(-8)), // Keep; first in interval.
new Fileset(8, BackupType.FULL_BACKUP, now.AddDays(-8).AddHours(1)), // Delete; second in interval.
new Fileset(9, BackupType.FULL_BACKUP, now.AddDays(-8).AddHours(2)), // Delete; third in interval
new Fileset(10, BackupType.PARTIAL_BACKUP, now.AddMonths(-1)), // Keep; partial
new Fileset(11, BackupType.PARTIAL_BACKUP, now.AddMonths(-1).AddHours(1)), // Keep; partial
new Fileset(12, BackupType.FULL_BACKUP, now.AddMonths(-1).AddHours(2)), // Keep; first full in interval. Do not discard full in favor of partial.
new Fileset(13, BackupType.FULL_BACKUP, now.AddMonths(-2)), // Keep; first in interval
new Fileset(14, BackupType.FULL_BACKUP, now.AddMonths(-2).AddHours(1)), // Delete; second in interval.
new Fileset(15, BackupType.FULL_BACKUP, now.AddDays(-89).AddHours(1)), // Keep; first in interval.
new Fileset(16, BackupType.FULL_BACKUP, now.AddDays(-89).AddHours(2)), // Delete; second in interval.
// Past year.
new Fileset(17, BackupType.FULL_BACKUP, now.AddDays(-92)), // Keep; first in interval.
new Fileset(18, BackupType.FULL_BACKUP, now.AddDays(-91)), // Delete; second in interval.
new Fileset(19, BackupType.PARTIAL_BACKUP, now.AddDays(-(90 + 73))), // Keep; partial
new Fileset(20, BackupType.PARTIAL_BACKUP, now.AddDays(-(90 + 72))), // Keep; partial.
new Fileset(21, BackupType.PARTIAL_BACKUP, now.AddDays(-(90 + 71))), // Keep; first full in interval. Do not discard full in favor of partial.
new Fileset(22, BackupType.FULL_BACKUP, now.AddDays(-(90 + 142))), // Keep; first in interval.
new Fileset(23, BackupType.FULL_BACKUP, now.AddDays(-(90 + 141))), // Delete; second in interval.
// Unlimited.
new Fileset(24, BackupType.FULL_BACKUP, now.AddYears(-1).AddMonths(-1)), // Keep; first in interval.
new Fileset(25, BackupType.FULL_BACKUP, now.AddYears(-1).AddMonths(-1).AddDays(1)), // Delete; second in interval.
new Fileset(26, BackupType.PARTIAL_BACKUP, new DateTime(1, 1, 1)), // Keep; partial
new Fileset(27, BackupType.FULL_BACKUP, new DateTime(1, 1, 30)), // Keep; first full in interval. Do not discard full in favor of partial.
};
IListResultFileset[] expectedFilesetsToRemove =
{
// 3M:1D
filesets[8],
filesets[9],
filesets[14],
filesets[16],
// 1Y:1W
filesets[18],
filesets[23],
// U:1M
filesets[25],
};
Random random = new Random();
RetentionPolicyRemover remover = new RetentionPolicyRemover(options);
IListResultFileset[] filesetsToRemove = remover.GetFilesetsToDelete(filesets.OrderBy(x => random.Next())).ToArray();
CollectionAssert.AreEquivalent(expectedFilesetsToRemove, filesetsToRemove);
}
[Test]
[Category("DeleteHandler")]
public void SpecificVersionsRemover()
{
IListResultFileset[] filesets =
{
new Fileset(0, BackupType.FULL_BACKUP, new DateTime(2000, 1, 1)),
new Fileset(1, BackupType.PARTIAL_BACKUP, new DateTime(2000, 1, 2)),
new Fileset(2, BackupType.FULL_BACKUP, new DateTime(2000, 1, 3)),
new Fileset(3, BackupType.PARTIAL_BACKUP, new DateTime(2000, 1, 4)),
new Fileset(4, BackupType.FULL_BACKUP, new DateTime(2000, 1, 5))
};
Options options = new Options(new Dictionary<string, string> {{"version", "0,3,4"}});
IListResultFileset[] expectedFilesetsToRemove =
{
filesets[0],
filesets[3],
filesets[4]
};
Random random = new Random();
SpecificVersionsRemover remover = new SpecificVersionsRemover(options);
IListResultFileset[] filesetsToRemove = remover.GetFilesetsToDelete(filesets.OrderBy(x => random.Next())).ToArray();
CollectionAssert.AreEquivalent(expectedFilesetsToRemove, filesetsToRemove);
}
}
}
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