001/*
002 * ====================================================================
003 * Licensed to the Apache Software Foundation (ASF) under one
004 * or more contributor license agreements.  See the NOTICE file
005 * distributed with this work for additional information
006 * regarding copyright ownership.  The ASF licenses this file
007 * to you under the Apache License, Version 2.0 (the
008 * "License"); you may not use this file except in compliance
009 * with the License.  You may obtain a copy of the License at
010 *
011 *   http://www.apache.org/licenses/LICENSE-2.0
012 *
013 * Unless required by applicable law or agreed to in writing,
014 * software distributed under the License is distributed on an
015 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
016 * KIND, either express or implied.  See the License for the
017 * specific language governing permissions and limitations
018 * under the License.
019 * ====================================================================
020 *
021 * This software consists of voluntary contributions made by many
022 * individuals on behalf of the Apache Software Foundation.  For more
023 * information on the Apache Software Foundation, please see
024 * <http://www.apache.org/>.
025 *
026 */
027
028package org.apache.http.nio.protocol;
029
030import java.io.IOException;
031
032import org.apache.http.HttpException;
033import org.apache.http.HttpRequest;
034import org.apache.http.annotation.ThreadingBehavior;
035import org.apache.http.annotation.Contract;
036import org.apache.http.protocol.HttpContext;
037import org.apache.http.protocol.HttpRequestHandler;
038import org.apache.http.util.Args;
039
040/**
041 * Basic implementation of {@link HttpAsyncRequestHandler} that delegates
042 * the process of request handling to a {@link HttpRequestHandler}. Please note
043 * that this handler buffers request content in memory and should be used for
044 * relatively small request messages.
045 *
046 * @since 4.2
047 */
048@Contract(threading = ThreadingBehavior.IMMUTABLE_CONDITIONAL)
049public class BasicAsyncRequestHandler implements HttpAsyncRequestHandler<HttpRequest> {
050
051    private final HttpRequestHandler handler;
052
053    public BasicAsyncRequestHandler(final HttpRequestHandler handler) {
054        super();
055        Args.notNull(handler, "Request handler");
056        this.handler = handler;
057    }
058
059    @Override
060    public HttpAsyncRequestConsumer<HttpRequest> processRequest(final HttpRequest request,
061            final HttpContext context) {
062        return new BasicAsyncRequestConsumer();
063    }
064
065    @Override
066    public void handle(
067            final HttpRequest request,
068            final HttpAsyncExchange httpexchange,
069            final HttpContext context) throws HttpException, IOException {
070        this.handler.handle(request, httpexchange.getResponse(), context);
071        httpexchange.submitResponse();
072    }
073
074}