//JAVA TO C# CONVERTER WARNING: Method 'throws' clauses are not available in C#:
//ORIGINAL LINE: private void removeLastCheckpointRecordFromLastLogFile() throws java.io.IOException
private void RemoveLastCheckpointRecordFromLastLogFile()
{
LogPosition checkpointPosition = null;
LogFile transactionLogFile = _logFiles.LogFile;
VersionAwareLogEntryReader <ReadableLogChannel> entryReader = new VersionAwareLogEntryReader <ReadableLogChannel>();
LogPosition startPosition = LogPosition.start(_logFiles.HighestLogVersion);
using (ReadableLogChannel reader = transactionLogFile.GetReader(startPosition))
{
LogEntry logEntry;
do
{
logEntry = entryReader.ReadLogEntry(reader);
if (logEntry is CheckPoint)
{
checkpointPosition = (( CheckPoint )logEntry).LogPosition;
}
} while (logEntry != null);
}
if (checkpointPosition != null)
{
using (StoreChannel storeChannel = _fileSystemRule.open(_logFiles.HighestLogFile, OpenMode.READ_WRITE))
{
storeChannel.Truncate(checkpointPosition.ByteOffset);
}
}
}
//JAVA TO C# CONVERTER TODO TASK: Most Java annotations will not have direct .NET equivalent attributes:
//ORIGINAL LINE: @Test public void shouldPickTheUncorruptedStoreWhenTruncatingAfterTheHeader() throws java.io.IOException
//JAVA TO C# CONVERTER WARNING: Method 'throws' clauses are not available in C#:
public virtual void ShouldPickTheUncorruptedStoreWhenTruncatingAfterTheHeader()
{
/*
* The problem was that if we were successful in writing the header but failing immediately after, we would
* read 0 as counter for entry data and pick the corrupted store thinking that it was simply empty.
*/
Store store = CreateTestStore();
Pair <File, KeyValueStoreFile> file = store.RotationStrategy.create(EMPTY_DATA_PROVIDER, 1);
Pair <File, KeyValueStoreFile> next = store.RotationStrategy.next(file.First(), Headers.HeadersBuilder().put(TX_ID, (long)42).headers(), Data((Entry)(key, value) =>
{
key.putByte(0, ( sbyte )'f');
key.putByte(1, ( sbyte )'o');
key.putByte(2, ( sbyte )'o');
value.putInt(0, 42);
}));
file.Other().Dispose();
File correct = next.First();
Pair <File, KeyValueStoreFile> nextNext = store.RotationStrategy.next(correct, Headers.HeadersBuilder().put(TX_ID, (long)43).headers(), Data((key, value) =>
{
key.putByte(0, ( sbyte )'f');
key.putByte(1, ( sbyte )'o');
key.putByte(2, ( sbyte )'o');
value.putInt(0, 42);
}, (key, value) =>
{
key.putByte(0, ( sbyte )'b');
key.putByte(1, ( sbyte )'a');
key.putByte(2, ( sbyte )'r');
value.putInt(0, 4242);
}));
next.Other().Dispose();
File corrupted = nextNext.First();
nextNext.Other().Dispose();
using (StoreChannel channel = _resourceManager.fileSystem().open(corrupted, OpenMode.READ_WRITE))
{
channel.Truncate(16 * 4);
}
// then
using (Lifespan life = new Lifespan())
{
life.Add(store);
assertNotNull(store.Get("foo"));
assertEquals(42L, store.Headers().get(TX_ID).longValue());
}
}
//JAVA TO C# CONVERTER WARNING: Method 'throws' clauses are not available in C#:
//ORIGINAL LINE: public StoreChannel truncate(long size) throws java.io.IOException
public override StoreChannel Truncate(long size)
{
return(@delegate.Truncate(Offset(size)));
}