/*
* 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.util;
import io.undertow.server.ExchangeCompletionListener;
import io.undertow.server.HttpHandler;
import io.undertow.server.HttpServerExchange;
import java.util.concurrent.CountDownLatch;
import java.util.concurrent.TimeUnit;
/**
* @author Stuart Douglas
*/
public class CompletionLatchHandler implements HttpHandler {
private final HttpHandler next;
private volatile CountDownLatch latch;
public CompletionLatchHandler(HttpHandler next) {
this.next = next;
latch = new CountDownLatch(1);
}
public CompletionLatchHandler(int size, HttpHandler next) {
this.next = next;
latch = new CountDownLatch(size);
}
public void await() {
try {
latch.await(10, TimeUnit.SECONDS);
} catch (InterruptedException e) {
throw new RuntimeException(e);
}
}
public void reset() {
this.latch = new CountDownLatch(1);
}
public void reset(int size) {
this.latch = new CountDownLatch(size);
}
@Override
public void handleRequest(HttpServerExchange exchange) throws Exception {
exchange.addExchangeCompleteListener(new ExchangeCompletionListener() {
@Override
public void exchangeEvent(HttpServerExchange exchange, NextListener nextListener) {
latch.countDown();
nextListener.proceed();
}
});
next.handleRequest(exchange);
}
}