| /* |
| * ==================================================================== |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you 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. |
| * ==================================================================== |
| * |
| * This software consists of voluntary contributions made by many |
| * individuals on behalf of the Apache Software Foundation. For more |
| * information on the Apache Software Foundation, please see |
| * <http://www.apache.org/>. |
| * |
| */ |
| package org.apache.hc.client5.http.async.methods; |
| |
| import java.io.IOException; |
| import java.io.UnsupportedEncodingException; |
| import java.nio.charset.UnsupportedCharsetException; |
| |
| import org.apache.hc.core5.concurrent.FutureCallback; |
| import org.apache.hc.core5.http.ContentType; |
| import org.apache.hc.core5.http.EntityDetails; |
| import org.apache.hc.core5.http.HttpException; |
| import org.apache.hc.core5.http.HttpResponse; |
| import org.apache.hc.core5.http.nio.AsyncResponseConsumer; |
| import org.apache.hc.core5.http.nio.entity.AbstractBinDataConsumer; |
| import org.apache.hc.core5.http.protocol.HttpContext; |
| |
| /** |
| * Abstract response consumer that processes response body data as an octet stream. |
| * |
| * @since 5.0 |
| * |
| * @param <T> response message representation. |
| */ |
| public abstract class AbstractBinResponseConsumer<T> extends AbstractBinDataConsumer implements AsyncResponseConsumer<T> { |
| |
| private volatile FutureCallback<T> resultCallback; |
| |
| /** |
| * Triggered to signal the beginning of response processing. |
| * |
| * @param response the response message head |
| * @param contentType the content type of the response body, |
| * or {@code null} if the response does not enclose a response entity. |
| */ |
| protected abstract void start(HttpResponse response, ContentType contentType) throws HttpException, IOException; |
| |
| /** |
| * Triggered to generate object that represents a result of response message processing. |
| * |
| * @return the result of response processing. |
| */ |
| protected abstract T buildResult(); |
| |
| @Override |
| public void informationResponse( |
| final HttpResponse response, |
| final HttpContext context) throws HttpException, IOException { |
| } |
| |
| @Override |
| public final void consumeResponse( |
| final HttpResponse response, |
| final EntityDetails entityDetails, |
| final HttpContext context, |
| final FutureCallback<T> resultCallback) throws HttpException, IOException { |
| this.resultCallback = resultCallback; |
| if (entityDetails != null) { |
| try { |
| final ContentType contentType = ContentType.parse(entityDetails.getContentType()); |
| start(response, contentType != null ? contentType : ContentType.DEFAULT_BINARY); |
| } catch (final UnsupportedCharsetException ex) { |
| throw new UnsupportedEncodingException(ex.getMessage()); |
| } |
| } else { |
| start(response, null); |
| completed(); |
| } |
| |
| } |
| |
| @Override |
| protected final void completed() { |
| resultCallback.completed(buildResult()); |
| } |
| |
| @Override |
| public void failed(final Exception cause) { |
| } |
| |
| } |