Examples with CompositeExchangeAttribute io.undertow.attribute.CompositeExchangeAttribute used on opensource projects

Example 1 with CompositeExchangeAttribute

use of io.undertow.attribute.CompositeExchangeAttribute in project undertow by undertow-io.

the class ExtendedAccessLogParser method parse.

public ExchangeAttribute parse(String pattern) {
    List<ExchangeAttribute> list = new ArrayList<ExchangeAttribute>();
    PatternTokenizer tokenizer = new PatternTokenizer(pattern);
    try {
        // Ignore leading whitespace.
        tokenizer.getWhiteSpaces();
        if (tokenizer.isEnded()) {
            UndertowLogger.ROOT_LOGGER.extendedAccessLogEmptyPattern();
            return null;
        }
        String token = tokenizer.getToken();
        while (token != null) {
            if (UndertowLogger.ROOT_LOGGER.isDebugEnabled()) {
                UndertowLogger.ROOT_LOGGER.debug("token = " + token);
            }
            ExchangeAttribute element = getLogElement(token, tokenizer);
            if (element == null) {
                break;
            }
            list.add(element);
            String whiteSpaces = tokenizer.getWhiteSpaces();
            if (whiteSpaces.length() > 0) {
                list.add(new ConstantExchangeAttribute(whiteSpaces));
            }
            if (tokenizer.isEnded()) {
                break;
            }
            token = tokenizer.getToken();
        }
        if (UndertowLogger.ROOT_LOGGER.isDebugEnabled()) {
            UndertowLogger.ROOT_LOGGER.debug("finished decoding with element size of: " + list.size());
        }
        return new CompositeExchangeAttribute(list.toArray(new ExchangeAttribute[list.size()]));
    } catch (IOException e) {
        UndertowLogger.ROOT_LOGGER.extendedAccessLogPatternParseError(e);
        return null;
    }
}