io.undertow.server.handlers.ResponseRateLimitingHandler Maven / Gradle / Ivy
Go to download
This artifact provides a single jar that contains all classes required to use remote EJB and JMS, including
all dependencies. It is intended for use by those not using maven, maven users should just import the EJB and
JMS BOM's instead (shaded JAR's cause lots of problems with maven, as it is very easy to inadvertently end up
with different versions on classes on the class path).
/*
* JBoss, Home of Professional Open Source.
* 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.server.handlers;
import io.undertow.conduits.RateLimitingStreamSinkConduit;
import io.undertow.server.ConduitWrapper;
import io.undertow.server.HandlerWrapper;
import io.undertow.server.HttpHandler;
import io.undertow.server.HttpServerExchange;
import io.undertow.server.handlers.builder.HandlerBuilder;
import io.undertow.util.ConduitFactory;
import org.xnio.conduits.StreamSinkConduit;
import java.util.Arrays;
import java.util.HashMap;
import java.util.HashSet;
import java.util.Map;
import java.util.Set;
import java.util.concurrent.TimeUnit;
/**
* Handler that limits the download rate
*
* @author Stuart Douglas
*/
public class ResponseRateLimitingHandler implements HttpHandler {
private final long time;
private final int bytes;
private final HttpHandler next;
private final ConduitWrapper WRAPPER = new ConduitWrapper() {
@Override
public StreamSinkConduit wrap(ConduitFactory factory, HttpServerExchange exchange) {
return new RateLimitingStreamSinkConduit(factory.create(), bytes, time, TimeUnit.MILLISECONDS);
}
};
/**
*
* A handler that limits the download speed to a set number of bytes/period
*
* @param next The next handler
* @param bytes The number of bytes per time period
* @param time The time period
* @param timeUnit The units of the time period
*/
public ResponseRateLimitingHandler(HttpHandler next, int bytes,long time, TimeUnit timeUnit) {
this.time = timeUnit.toMillis(time);
this.bytes = bytes;
this.next = next;
}
@Override
public void handleRequest(HttpServerExchange exchange) throws Exception {
exchange.addResponseWrapper(WRAPPER);
next.handleRequest(exchange);
}
@Override
public String toString() {
return "response-rate-limit( bytes=" + bytes + ", time=" + time + " )";
}
public static class Builder implements HandlerBuilder {
@Override
public String name() {
return "response-rate-limit";
}
@Override
public Map> parameters() {
Map> ret = new HashMap<>();
ret.put("bytes", Integer.class);
ret.put("time", Long.class);
return ret;
}
@Override
public Set requiredParameters() {
return new HashSet<>(Arrays.asList("bytes", "time"));
}
@Override
public String defaultParameter() {
return null;
}
@Override
public HandlerWrapper build(Map config) {
return new Wrapper((Integer)config.get("bytes"), (Long)config.get("time"), TimeUnit.MILLISECONDS);
}
}
private static class Wrapper implements HandlerWrapper {
private final long time;
private final int bytes;
private Wrapper(int bytes, long time, TimeUnit timeUnit) {
this.time = timeUnit.toMillis(time);
this.bytes = bytes;
}
@Override
public HttpHandler wrap(HttpHandler handler) {
return new ResponseRateLimitingHandler(handler, bytes, time, TimeUnit.MILLISECONDS);
}
}
}