本文整理汇总了C#中KeyValueDB.Compact方法的典型用法代码示例。如果您正苦于以下问题：C# KeyValueDB.Compact方法的具体用法？C# KeyValueDB.Compact怎么用？C# KeyValueDB.Compact使用的例子？那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类KeyValueDB的用法示例。
在下文中一共展示了KeyValueDB.Compact方法的4个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C#代码示例。
示例1: PreapprovedCommitAndCompaction
public void PreapprovedCommitAndCompaction()
{
using (var fileCollection = new InMemoryFileCollection())
{
using (var db = new KeyValueDB(fileCollection, new NoCompressionStrategy(), 1024))
{
using (var tr = db.StartWritingTransaction().Result)
{
tr.CreateOrUpdateKeyValue(_key1, new byte[1024]);
tr.CreateOrUpdateKeyValue(Key2, new byte[10]);
tr.Commit();
}
db.Compact(new CancellationToken());
using (var tr = db.StartWritingTransaction().Result)
{
tr.EraseRange(0, 0);
tr.Commit();
}
db.Compact(new CancellationToken());
using (var db2 = new KeyValueDB(fileCollection, new NoCompressionStrategy(), 1024))
{
using (var tr = db2.StartTransaction())
{
Assert.False(tr.FindExactKey(_key1));
Assert.True(tr.FindExactKey(Key2));
}
}
}
}
}示例2: Main
static void Main(string[] args)
{
if (args.Length < 1)
{
Console.WriteLine("Need to have just one parameter with directory of ObjectDB");
return;
}
var action = "dump";
if (args.Length > 1)
{
action = args[1].ToLowerInvariant();
}
switch (action)
{
case "dump":
{
using (var dfc = new OnDiskFileCollection(args[0]))
using (var kdb = new KeyValueDB(dfc))
using (var odb = new ObjectDB())
{
odb.Open(kdb, false);
using (var tr = odb.StartTransaction())
{
var visitor = new ToStringVisitor();
var iterator = new ODBIterator(tr, visitor);
iterator.Iterate();
var text = visitor.ToString();
Console.WriteLine(text);
}
}
break;
}
case "stat":
{
using (var dfc = new OnDiskFileCollection(args[0]))
using (var kdb = new KeyValueDB(dfc))
{
Console.WriteLine(kdb.CalcStats());
}
break;
}
case "compact":
{
using (var dfc = new OnDiskFileCollection(args[0]))
using (var kdb = new KeyValueDB(dfc, new SnappyCompressionStrategy(), 100 * 1024 * 1024, null))
{
Console.WriteLine("Starting first compaction");
while (kdb.Compact(new CancellationToken()))
{
Console.WriteLine(kdb.CalcStats());
Console.WriteLine("Another compaction needed");
}
Console.WriteLine(kdb.CalcStats());
}
break;
}
case "export":
{
using (var dfc = new OnDiskFileCollection(args[0]))
using (var kdb = new KeyValueDB(dfc))
using (var tr = kdb.StartReadOnlyTransaction())
using (var st = File.Create(Path.Combine(args[0], "export.dat")))
{
KeyValueDBExportImporter.Export(tr, st);
}
break;
}
default:
{
Console.WriteLine($"Unknown action: {action}");
break;
}
}
}示例3: CompactionDoesNotRemoveStillUsedFiles
public void CompactionDoesNotRemoveStillUsedFiles()
{
using (var fileCollection = new InMemoryFileCollection())
{
using (var db = new KeyValueDB(fileCollection, new NoCompressionStrategy(), 1024, null))
{
using (var tr = db.StartTransaction())
{
tr.CreateOrUpdateKeyValue(_key1, new byte[1024]);
tr.CreateOrUpdateKeyValue(Key2, new byte[10]);
tr.Commit();
}
var longTr = db.StartTransaction();
using (var tr = db.StartTransaction())
{
tr.FindExactKey(_key1);
tr.EraseCurrent();
tr.Commit();
}
db.Compact(new CancellationToken());
Assert.Equal(3u, fileCollection.GetCount()); // 2 Logs, 1 KeyIndex
longTr.Dispose();
db.Compact(new CancellationToken());
Assert.Equal(2u, fileCollection.GetCount()); // 1 Log, 1 KeyIndex
using (var tr = db.StartTransaction())
{
tr.CreateOrUpdateKeyValue(_key3, new byte[10]);
tr.Commit();
}
using (var db2 = new KeyValueDB(fileCollection, new NoCompressionStrategy(), 1024))
{
using (var tr = db2.StartTransaction())
{
Assert.True(tr.FindExactKey(_key3));
}
}
}
}
}示例4: CompactionWaitsForFinishingOldTransactionsBeforeRemovingFiles
public void CompactionWaitsForFinishingOldTransactionsBeforeRemovingFiles()
{
using (var fileCollection = new InMemoryFileCollection())
{
using (var db = new KeyValueDB(fileCollection, new NoCompressionStrategy(), 1024))
{
using (var tr = db.StartTransaction())
{
tr.CreateOrUpdateKeyValue(_key1, new byte[1024]);
tr.CreateOrUpdateKeyValue(Key2, new byte[10]);
tr.Commit();
}
var longTr = db.StartTransaction();
using (var tr = db.StartTransaction())
{
tr.FindExactKey(_key1);
tr.EraseCurrent();
tr.Commit();
}
db.Compact();
Thread.Sleep(2000);
Console.WriteLine(db.CalcStats());
Assert.True(4 <= fileCollection.GetCount()); // 2 Logs, 1 Value, 1 KeyIndex, (optinal 1 Unknown (old KeyIndex))
longTr.Dispose();
Thread.Sleep(1000);
Assert.Equal(2u, fileCollection.GetCount()); // 1 Log, 1 KeyIndex
using (var tr = db.StartTransaction())
{
tr.CreateOrUpdateKeyValue(_key3, new byte[10]);
tr.Commit();
}
using (var db2 = new KeyValueDB(fileCollection, new NoCompressionStrategy(), 1024))
{
using (var tr = db2.StartTransaction())
{
Assert.True(tr.FindExactKey(_key3));
}
}
}
}
}