/// <summary>Closes the stream, also sets it to null.</summary>
/// <exception cref="System.IO.IOException"/>
public virtual void CloseStream()
{
if (stream == null)
{
return;
}
stream.Close();
stream = null;
}
/// <exception cref="System.IO.IOException"/>
internal static void AddDeleteOpcode(EditLogOutputStream elos, FSEditLogOp.OpInstanceCache
cache, long txId, string path)
{
FSEditLogOp.DeleteOp op = FSEditLogOp.DeleteOp.GetInstance(cache);
op.SetTransactionId(txId);
op.SetPath(path);
op.SetTimestamp(0);
elos.Write(op);
}
/// <summary>Aborts the stream, also sets it to null.</summary>
public virtual void Abort()
{
if (stream == null)
{
return;
}
try
{
stream.Abort();
}
catch (IOException ioe)
{
Log.Error("Unable to abort stream " + stream, ioe);
}
stream = null;
}
/// <exception cref="System.IO.IOException"/>
internal static void PadEditLog(EditLogOutputStream elos, int paddingLength)
{
if (paddingLength <= 0)
{
return;
}
byte[] buf = new byte[4096];
for (int i = 0; i < buf.Length; i++)
{
buf[i] = unchecked ((byte)unchecked ((byte)(-1)));
}
int pad = paddingLength;
while (pad > 0)
{
int toWrite = pad > buf.Length ? buf.Length : pad;
elos.WriteRaw(buf, 0, toWrite);
pad -= toWrite;
}
}
/// <exception cref="System.IO.IOException"/>
public override void AddTransactionsToLog(EditLogOutputStream elos, FSEditLogOp.OpInstanceCache
cache)
{
for (long txid = 1; txid <= MaxTxid; txid++)
{
if (txid == BadTxid)
{
byte[] garbage = new byte[] { unchecked ((int)(0x1)), unchecked ((int)(0x2)), unchecked (
(int)(0x3)) };
elos.WriteRaw(garbage, 0, garbage.Length);
}
else
{
FSEditLogOp.DeleteOp op;
op = FSEditLogOp.DeleteOp.GetInstance(cache);
op.SetTransactionId(txid);
op.SetPath("/foo." + txid);
op.SetTimestamp(txid);
elos.Write(op);
}
}
}
/// <exception cref="System.IO.IOException"/>
public virtual void StartLogSegment(long txId, int layoutVersion)
{
Preconditions.CheckState(stream == null);
disabled = false;
stream = journal.StartLogSegment(txId, layoutVersion);
}
internal virtual void SetCurrentStreamForTests(EditLogOutputStream stream)
{
this.stream = stream;
}
/// <exception cref="System.IO.IOException"/>
public override void AddTransactionsToLog(EditLogOutputStream elos, FSEditLogOp.OpInstanceCache
cache)
{
PadEditLog(elos, paddingLength);
AddDeleteOpcode(elos, cache, 0, "/foo");
}
/// <exception cref="System.IO.IOException"/>
public override void AddTransactionsToLog(EditLogOutputStream elos, FSEditLogOp.OpInstanceCache
cache)
{
PadEditLog(elos, paddingLength);
}
/// <summary>Set up the edit log.</summary>
/// <exception cref="System.IO.IOException"/>
public abstract void AddTransactionsToLog(EditLogOutputStream elos, FSEditLogOp.OpInstanceCache
cache);
