if (args.length != 1) {
System.err.println("USAGE: LogFormatter log_file");
System.exit(2);
}
FileInputStream fis = new FileInputStream(args[0]);
BinaryInputArchive logStream = BinaryInputArchive.getArchive(fis);
FileHeader fhdr = new FileHeader();
fhdr.deserialize(logStream, "fileheader");
if (fhdr.getMagic() != FileTxnLog.TXNLOG_MAGIC) {
System.err.println("Invalid magic number for " + args[0]);
System.exit(2);
}
System.out.println("ZooKeeper Transactional Log File with dbid "
+ fhdr.getDbid() + " txnlog format version "
+ fhdr.getVersion());
int count = 0;
while (true) {
long crcValue;
byte[] bytes;
try {
crcValue = logStream.readLong("crcvalue");
bytes = logStream.readBuffer("txnEntry");
} catch (EOFException e) {
System.out.println("EOF reached after " + count + " txns.");
return;
}
if (bytes.length == 0) {
// Since we preallocate, we define EOF to be an
// empty transaction
System.out.println("EOF reached after " + count + " txns.");
return;
}
Checksum crc = new Adler32();
crc.update(bytes, 0, bytes.length);
if (crcValue != crc.getValue()) {
throw new IOException("CRC doesn't match " + crcValue +
" vs " + crc.getValue());
}
InputArchive iab = BinaryInputArchive
.getArchive(new ByteArrayInputStream(bytes));
TxnHeader hdr = new TxnHeader();
SerializeUtils.deserializeTxn(iab, hdr);
System.out.println(DateFormat.getDateTimeInstance(DateFormat.SHORT,
DateFormat.LONG).format(new Date(hdr.getTime()))
+ " session 0x"
+ Long.toHexString(hdr.getClientId())
+ " cxid 0x"
+ Long.toHexString(hdr.getCxid())
+ " zxid 0x"
+ Long.toHexString(hdr.getZxid())
+ " " + TraceFormatter.op2String(hdr.getType()));
if (logStream.readByte("EOR") != 'B') {
LOG.error("Last transaction was partial.");
throw new EOFException("Last transaction was partial.");
}
count++;
}