/// <exception cref="System.IO.IOException"/>
public override void Format(NamespaceInfo ns)
{
try
{
// delete old info
Stat baseStat = null;
Stat ledgerStat = null;
if ((baseStat = zkc.Exists(basePath, false)) != null)
{
if ((ledgerStat = zkc.Exists(ledgerPath, false)) != null)
{
foreach (EditLogLedgerMetadata l in GetLedgerList(true))
{
try
{
bkc.DeleteLedger(l.GetLedgerId());
}
catch (BKException.BKNoSuchLedgerExistsException)
{
Log.Warn("Ledger " + l.GetLedgerId() + " does not exist;" + " Cannot delete.");
}
}
}
ZKUtil.DeleteRecursive(zkc, basePath);
}
// should be clean now.
zkc.Create(basePath, new byte[] { (byte)('0') }, ZooDefs.Ids.OpenAclUnsafe, CreateMode
.Persistent);
BKJournalProtos.VersionProto.Builder builder = BKJournalProtos.VersionProto.NewBuilder
();
builder.SetNamespaceInfo(PBHelper.Convert(ns)).SetLayoutVersion(BkjmLayoutVersion
);
byte[] data = Sharpen.Runtime.GetBytesForString(TextFormat.PrintToString(((BKJournalProtos.VersionProto
)builder.Build())), Charsets.Utf8);
zkc.Create(versionPath, data, ZooDefs.Ids.OpenAclUnsafe, CreateMode.Persistent);
zkc.Create(ledgerPath, new byte[] { (byte)('0') }, ZooDefs.Ids.OpenAclUnsafe, CreateMode
.Persistent);
}
catch (KeeperException ke)
{
Log.Error("Error accessing zookeeper to format", ke);
throw new IOException("Error accessing zookeeper to format", ke);
}
catch (Exception ie)
{
Sharpen.Thread.CurrentThread().Interrupt();
throw new IOException("Interrupted during format", ie);
}
catch (BKException bke)
{
throw new IOException("Error cleaning up ledgers during format", bke);
}
}
public virtual void Setup()
{
zkc = ConnectZooKeeper(Hostport);
try
{
ZKUtil.DeleteRecursive(zkc, BkRootPath);
}
catch (KeeperException.NoNodeException e)
{
Log.Debug("Ignoring no node exception on cleanup", e);
}
catch (Exception e)
{
Log.Error("Exception when deleting bookie root path in zk", e);
}
}