io.undertow.predicate.RequestLargerThanPredicate Maven / Gradle / Ivy
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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,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
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 larger than a
* given size.
*
* @author Brad Wood
*/
public class RequestLargerThanPredicate implements Predicate {
private final long size;
RequestLargerThanPredicate(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-larger-than( '" + size + "' )";
}
public static class Builder implements PredicateBuilder {
@Override
public String name() {
return "request-larger-than";
}
@Override
public Map> parameters() {
return Collections.>singletonMap("size", Long.class);
}
@Override
public Set requiredParameters() {
return Collections.singleton("size");
}
@Override
public String defaultParameter() {
return "size";
}
@Override
public Predicate build(final Map config) {
Long size = (Long) config.get("size");
return new RequestLargerThanPredicate(size);
}
}
}