io.undertow.server.handlers.StoredResponseHandler 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.server.handlers;
import java.util.Collections;
import java.util.Map;
import java.util.Set;
import org.xnio.conduits.StreamSinkConduit;
import io.undertow.conduits.StoredResponseStreamSinkConduit;
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;
/**
* A handler that buffers the full response and attaches it to the exchange. This makes use of
* {@link StoredResponseStreamSinkConduit}
*
* This will be made available once the response is fully complete, so should generally
* be read in an {@link io.undertow.server.ExchangeCompletionListener}
*
* @author Stuart Douglas
*/
public class StoredResponseHandler implements HttpHandler {
private final HttpHandler next;
public StoredResponseHandler(HttpHandler next) {
this.next = next;
}
@Override
public void handleRequest(HttpServerExchange exchange) throws Exception {
exchange.addResponseWrapper(new ConduitWrapper() {
@Override
public StreamSinkConduit wrap(ConduitFactory factory, HttpServerExchange exchange) {
return new StoredResponseStreamSinkConduit(factory.create(), exchange);
}
});
next.handleRequest(exchange);
}
@Override
public String toString() {
return "store-response()";
}
public static class Builder implements HandlerBuilder {
@Override
public String name() {
return "store-response";
}
@Override
public Map> parameters() {
return Collections.emptyMap();
}
@Override
public Set requiredParameters() {
return Collections.emptySet();
}
@Override
public String defaultParameter() {
return null;
}
@Override
public HandlerWrapper build(Map config) {
return new HandlerWrapper() {
@Override
public HttpHandler wrap(HttpHandler handler) {
return new StoredResponseHandler(handler);
}
};
}
}
}