public static void main(String[] args) throws Exception {
        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++;
        }
    }
public static void main ( String [ ] args ) throws Exception { 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 ) { 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 ++ ; } }
@param args