/**
* 写入事务日志
*
* @param tlog
* @return
* @throws BKException
* @throws InterruptedException
*/
public SyncCounter writeLog(TransactionLogRecord tlog) throws InterruptedException {
int recordSize = tlog.calculateTotalRecordSize();
long futureFilePosition = handle.getLength() + recordSize;
if (futureFilePosition >= conf.getBtmConf().getMaxLogSizeInMb() * 1024 * 1024) {
if (log.isDebugEnabled())
log.debug(
"log file is full (size would be: "
+ futureFilePosition
+ ", max allowed: "
+ conf.getBtmConf().getMaxLogSizeInMb()
+ "Mbs");
return null;
}
ByteBuffer buf = ByteBuffer.allocate(recordSize);
buf.putInt(tlog.getStatus());
buf.putInt(tlog.getRecordLength());
buf.putInt(tlog.getHeaderLength());
buf.putLong(tlog.getTime());
buf.putInt(tlog.getSequenceNumber());
buf.putInt(tlog.getCrc32());
buf.put((byte) tlog.getGtrid().getArray().length);
buf.put(tlog.getGtrid().getArray());
Set<String> uniqueNames = tlog.getUniqueNames();
buf.putInt(uniqueNames.size());
for (String uniqueName : uniqueNames) {
buf.putShort((short) uniqueName.length());
buf.put(uniqueName.getBytes());
}
buf.putInt(tlog.getEndRecord());
byte[] data = buf.array();
SyncCounter counter = new SyncCounter();
counter.inc();
handle.asyncAddEntry(data, new SyncAddCallback(), counter);
lastCounter.set(counter);
return counter;
}
