Examples with LogHeader com.taobao.tddl.dbsync.binlog.event.LogHeader used on opensource projects

Example 1 with LogHeader

use of com.taobao.tddl.dbsync.binlog.event.LogHeader in project canal by alibaba.

the class LogEventConvert method buildQueryEntry.

private Entry buildQueryEntry(String queryString, LogHeader logHeader) {
    Header header = createHeader(binlogFileName, logHeader, "", "", EventType.QUERY);
    RowChange.Builder rowChangeBuider = RowChange.newBuilder();
    rowChangeBuider.setSql(queryString);
    rowChangeBuider.setEventType(EventType.QUERY);
    return createEntry(header, EntryType.ROWDATA, rowChangeBuider.build().toByteString());
}

Example 2 with LogHeader

use of com.taobao.tddl.dbsync.binlog.event.LogHeader in project canal by alibaba.

the class LogDecoder method decode.

/**
     * Decoding an event from binary-log buffer.
     * 
     * @return <code>UknownLogEvent</code> if event type is unknown or skipped,
     * <code>null</code> if buffer is not including a full event.
     */
public LogEvent decode(LogBuffer buffer, LogContext context) throws IOException {
    final int limit = buffer.limit();
    if (limit >= FormatDescriptionLogEvent.LOG_EVENT_HEADER_LEN) {
        LogHeader header = new LogHeader(buffer, context.getFormatDescription());
        final int len = header.getEventLen();
        if (limit >= len) {
            LogEvent event;
            /* Checking binary-log's header */
            if (handleSet.get(header.getType())) {
                buffer.limit(len);
                try {
                    /* Decoding binary-log to event */
                    event = decode(buffer, header, context);
                } catch (IOException e) {
                    if (logger.isWarnEnabled())
                        logger.warn("Decoding " + LogEvent.getTypeName(header.getType()) + " failed from: " + context.getLogPosition(), e);
                    throw e;
                } finally {
                    buffer.limit(limit);
                /* Restore limit */
                }
            } else {
                /* Ignore unsupported binary-log. */
                event = new UnknownLogEvent(header);
            }
            /* consume this binary-log. */
            buffer.consume(len);
            return event;
        }
    }
    /* Rewind buffer's position to 0. */
    buffer.rewind();
    return null;
}