public void OpeningDbWithLenientOpenWithMissingFirstTrlAndKviWarnsAndRecoversData()
{
using var fileCollection = new InMemoryFileCollection();
var options = new KeyValueDBOptions
{
FileCollection = fileCollection, Compression = new NoCompressionStrategy(), FileSplitSize = 1024,
LenientOpen = true,
Logger = new LoggerMock()
};
Create2TrlFiles(options);
fileCollection.GetFile(1) !.Remove();
using var db = NewKeyValueDB(options);
Assert.Equal("No valid Kvi and lowest Trl in chain is not first. Missing 1. LenientOpen is true, recovering data.", ((LoggerMock)options.Logger).LastWarning);
using var tr = db.StartTransaction();
Assert.Equal(1, tr.GetKeyValueCount());
Assert.Equal(1u, fileCollection.GetCount());
}
public void OpeningDbWithMissingFirstTrlAndKviWarnsAndOpenEmptyDb()
{
using var fileCollection = new InMemoryFileCollection();
var options = new KeyValueDBOptions
{
FileCollection = fileCollection, Compression = new NoCompressionStrategy(), FileSplitSize = 1024,
Logger = new LoggerMock()
};
Create2TrlFiles(options);
fileCollection.GetFile(1) !.Remove();
using var db = NewKeyValueDB(options);
Assert.Equal("No valid Kvi and lowest Trl in chain is not first. Missing 1", ((LoggerMock)options.Logger).LastWarning);
using var tr = db.StartTransaction();
Assert.Equal(0, tr.GetKeyValueCount());
Assert.Equal(0u, fileCollection.GetCount());
tr.CreateOrUpdateKeyValue(_key1, new byte[1024]);
tr.Commit();
}
public void ComplexTrlRollbackWhenKviLost()
{
using (var fileCollection = new InMemoryFileCollection())
{
var options = new KeyValueDBOptions
{
Compression = new SnappyCompressionStrategy(),
FileCollection = fileCollection,
FileSplitSize = 100 * 1024 * 1024,
OpenUpToCommitUlong = null,
PreserveHistoryUpToCommitUlong = null,
CompactorScheduler = CompactorScheduler.Instance,
};
using (var kvDb = new KeyValueDB(options))
using (var objDb = new ObjectDB())
{
objDb.Open(kvDb, false);
for (ulong i = 0; i < 100; i += 3)
{
using (var tr = objDb.StartWritingTransaction().Result)
{
var person = tr.Singleton <Person>();
person.Age = (uint)i;
tr.Store(person);
tr.SetCommitUlong(i);
tr.Commit();
}
}
}
options = new KeyValueDBOptions
{
Compression = new SnappyCompressionStrategy(),
FileCollection = fileCollection,
FileSplitSize = 100 * 1024 * 1024,
OpenUpToCommitUlong = 9UL,
PreserveHistoryUpToCommitUlong = 9UL,
CompactorScheduler = CompactorScheduler.Instance,
};
using (var kvDb = new KeyValueDB(options))
using (var objDb = new ObjectDB())
{
objDb.Open(kvDb, false);
using (var tr = objDb.StartReadOnlyTransaction())
{
Assert.Equal(9UL, tr.GetCommitUlong());
}
}
// Delete KVI file
fileCollection.GetFile(3).Remove();
options = new KeyValueDBOptions
{
Compression = new SnappyCompressionStrategy(),
FileCollection = fileCollection,
OpenUpToCommitUlong = 9UL,
PreserveHistoryUpToCommitUlong = 9UL,
FileSplitSize = 100 * 1024 * 1024,
CompactorScheduler = CompactorScheduler.Instance,
};
using (var kvDb = new KeyValueDB(options))
using (var objDb = new ObjectDB())
{
objDb.Open(kvDb, false);
using (var tr = objDb.StartReadOnlyTransaction())
{
Assert.Equal(9UL, tr.GetCommitUlong());
}
for (ulong i = 10; i < 200; i += 5)
{
using (var tr = objDb.StartWritingTransaction().Result)
{
var person = tr.Singleton <Person>();
person.Age = (uint)i;
tr.Store(person);
tr.SetCommitUlong(i);
tr.Commit();
}
}
}
options = new KeyValueDBOptions
{
Compression = new SnappyCompressionStrategy(),
FileCollection = fileCollection,
FileSplitSize = 100 * 1024 * 1024,
OpenUpToCommitUlong = 50UL,
PreserveHistoryUpToCommitUlong = 50UL,
CompactorScheduler = CompactorScheduler.Instance,
};
using (var kvDb = new KeyValueDB(options))
using (var objDb = new ObjectDB())
{
objDb.Open(kvDb, false);
using (var tr = objDb.StartReadOnlyTransaction())
{
Assert.Equal(50UL, tr.GetCommitUlong());
}
}
}
}