Examples with ContentType org.glassfish.grizzly.http.util.ContentType used on opensource projects

Example 1 with ContentType

use of org.glassfish.grizzly.http.util.ContentType in project Payara by payara.

the class JwtKeyStoreUtils method readKeyFromURL.

private static CacheableString readKeyFromURL(URL keyURL, Duration defaultCacheTTL) throws IOException {
    URLConnection urlConnection = keyURL.openConnection();
    Charset charset = Charset.defaultCharset();
    ContentType contentType = ContentType.newContentType(urlConnection.getContentType());
    if (contentType != null) {
        String charEncoding = contentType.getCharacterEncoding();
        if (charEncoding != null) {
            try {
                if (!Charset.isSupported(charEncoding)) {
                    LOGGER.warning("Charset " + charEncoding + " for remote key not supported, using default charset instead");
                } else {
                    charset = Charset.forName(contentType.getCharacterEncoding());
                }
            } catch (IllegalCharsetNameException ex) {
                LOGGER.severe("Charset " + ex.getCharsetName() + " for remote key not supported, Cause: " + ex.getMessage());
            }
        }
    }
    // There's no guarantee that the response will contain at most one Cache-Control header and at most one max-age
    // directive. Here, we apply the smallest of all max-age directives.
    Duration cacheTTL = urlConnection.getHeaderFields().entrySet().stream().filter(e -> e.getKey() != null && e.getKey().trim().equalsIgnoreCase("Cache-Control")).flatMap(headers -> headers.getValue().stream()).flatMap(headerValue -> Stream.of(headerValue.split(","))).filter(directive -> directive.trim().startsWith("max-age")).map(maxAgeDirective -> {
        String[] keyValue = maxAgeDirective.split("=", 2);
        String maxAge = keyValue[keyValue.length - 1];
        try {
            return Duration.ofSeconds(Long.parseLong(maxAge));
        } catch (NumberFormatException e) {
            return null;
        }
    }).filter(Objects::nonNull).min(Duration::compareTo).orElse(defaultCacheTTL);
    try (InputStream inputStream = urlConnection.getInputStream();
        BufferedReader reader = new BufferedReader(new InputStreamReader(inputStream, charset))) {
        String keyContents = reader.lines().collect(Collectors.joining(System.lineSeparator()));
        return CacheableString.from(keyContents, cacheTTL);
    }
}