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 * Copyright 2014 Red Hat, Inc., and individual contributors
 * as indicated by the @author tags.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 *  Unless required by applicable law or agreed to in writing, software
 *  distributed under the License is distributed on an "AS IS" BASIS,
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package io.undertow.predicate;

import java.util.Collections;
import java.util.Map;
import java.util.Set;

import io.undertow.server.HttpServerExchange;
import io.undertow.util.Headers;

Predicate that returns true if the Content-Size of a request is smaller than a given size.
Author:Brad Wood
/** * Predicate that returns true if the Content-Size of a request is smaller than a * given size. * * @author Brad Wood */
public class RequestSmallerThanPredicate implements Predicate { private final long size; RequestSmallerThanPredicate(final long size) { this.size = size; } @Override public boolean resolve(final HttpServerExchange exchange) { final String length = exchange.getResponseHeaders().getFirst(Headers.CONTENT_LENGTH); if (length == null) { return false; } return Long.parseLong(length) < size; } public String toString() { return "request-smaller-than( '" + size + "' )"; } public static class Builder implements PredicateBuilder { @Override public String name() { return "request-smaller-than"; } @Override public Map<String, Class<?>> parameters() { return Collections.<String, Class<?>>singletonMap("size", Long.class); } @Override public Set<String> requiredParameters() { return Collections.singleton("size"); } @Override public String defaultParameter() { return "size"; } @Override public Predicate build(final Map<String, Object> config) { Long size = (Long) config.get("size"); return new RequestSmallerThanPredicate(size); } } }