| /* |
| * Copyright (c) 2015, 2016, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. Oracle designates this |
| * particular file as subject to the "Classpath" exception as provided |
| * by Oracle in the LICENSE file that accompanied this code. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| |
| package jdk.incubator.http; |
| |
| import java.io.IOException; |
| import java.net.InetSocketAddress; |
| import jdk.incubator.http.HttpResponse.BodyHandler; |
| import jdk.incubator.http.HttpResponse.BodyProcessor; |
| import java.nio.ByteBuffer; |
| import java.util.concurrent.CompletableFuture; |
| import java.util.Collections; |
| import java.util.LinkedList; |
| import java.util.List; |
| import java.util.concurrent.CompletionException; |
| import java.util.concurrent.Executor; |
| import jdk.incubator.http.internal.common.Log; |
| import jdk.incubator.http.internal.common.MinimalFuture; |
| import jdk.incubator.http.internal.common.Utils; |
| |
| /** |
| * Encapsulates one HTTP/1.1 request/responseAsync exchange. |
| */ |
| class Http1Exchange<T> extends ExchangeImpl<T> { |
| |
| final HttpRequestImpl request; // main request |
| final List<CompletableFuture<?>> operations; // used for cancel |
| final Http1Request requestAction; |
| volatile Http1Response<T> response; |
| final HttpConnection connection; |
| final HttpClientImpl client; |
| final Executor executor; |
| final ByteBuffer buffer; // used for receiving |
| |
| @Override |
| public String toString() { |
| return request.toString(); |
| } |
| |
| HttpRequestImpl request() { |
| return request; |
| } |
| |
| Http1Exchange(Exchange<T> exchange, HttpConnection connection) |
| throws IOException |
| { |
| super(exchange); |
| this.request = exchange.request(); |
| this.client = exchange.client(); |
| this.executor = exchange.executor(); |
| this.operations = Collections.synchronizedList(new LinkedList<>()); |
| this.buffer = exchange.getBuffer(); |
| if (connection != null) { |
| this.connection = connection; |
| } else { |
| InetSocketAddress addr = request.getAddress(client); |
| this.connection = HttpConnection.getConnection(addr, client, request); |
| } |
| this.requestAction = new Http1Request(request, client, this.connection); |
| } |
| |
| |
| HttpConnection connection() { |
| return connection; |
| } |
| |
| |
| @Override |
| T readBody(BodyHandler<T> handler, boolean returnToCache) |
| throws IOException |
| { |
| BodyProcessor<T> processor = handler.apply(response.responseCode(), |
| response.responseHeaders()); |
| setClientForResponse(processor); |
| CompletableFuture<T> bodyCF = response.readBody(processor, |
| returnToCache, |
| this::executeInline); |
| try { |
| return bodyCF.join(); |
| } catch (CompletionException e) { |
| throw Utils.getIOException(e); |
| } |
| } |
| |
| private void executeInline(Runnable r) { |
| r.run(); |
| } |
| |
| synchronized ByteBuffer getBuffer() { |
| return buffer; |
| } |
| |
| @Override |
| CompletableFuture<T> readBodyAsync(BodyHandler<T> handler, |
| boolean returnToCache, |
| Executor executor) |
| { |
| BodyProcessor<T> processor = handler.apply(response.responseCode(), |
| response.responseHeaders()); |
| setClientForResponse(processor); |
| CompletableFuture<T> bodyCF = response.readBody(processor, |
| returnToCache, |
| executor); |
| return bodyCF; |
| } |
| |
| @Override |
| void sendHeadersOnly() throws IOException, InterruptedException { |
| try { |
| if (!connection.connected()) { |
| connection.connect(); |
| } |
| requestAction.sendHeadersOnly(); |
| } catch (Throwable e) { |
| connection.close(); |
| throw e; |
| } |
| } |
| |
| @Override |
| void sendBody() throws IOException { |
| try { |
| requestAction.continueRequest(); |
| } catch (Throwable e) { |
| connection.close(); |
| throw e; |
| } |
| } |
| |
| @Override |
| Response getResponse() throws IOException { |
| try { |
| response = new Http1Response<>(connection, this); |
| response.readHeaders(); |
| return response.response(); |
| } catch (Throwable t) { |
| connection.close(); |
| throw t; |
| } |
| } |
| |
| private void closeConnection() { |
| connection.close(); |
| } |
| |
| /** |
| * Cancel checks to see if request and responseAsync finished already. |
| * If not it closes the connection and completes all pending operations |
| */ |
| @Override |
| void cancel() { |
| cancel(new IOException("Request cancelled")); |
| } |
| |
| /** |
| * Cancel checks to see if request and responseAsync finished already. |
| * If not it closes the connection and completes all pending operations |
| */ |
| @Override |
| synchronized void cancel(IOException cause) { |
| if (requestAction != null && requestAction.finished() |
| && response != null && response.finished()) { |
| return; |
| } |
| connection.close(); |
| int count = 0; |
| for (CompletableFuture<?> cf : operations) { |
| cf.completeExceptionally(cause); |
| count++; |
| } |
| Log.logError("Http1Exchange.cancel: count=" + count); |
| } |
| |
| CompletableFuture<Response> getResponseAsyncImpl(Executor executor) { |
| CompletableFuture<Response> cf = new MinimalFuture<>(); |
| executor.execute(() -> { |
| try { |
| response = new Http1Response<>(connection, Http1Exchange.this); |
| response.readHeaders(); |
| cf.complete(response.response()); |
| } catch (Throwable e) { |
| cf.completeExceptionally(e); |
| } |
| }); |
| return cf; |
| } |
| |
| @Override |
| CompletableFuture<Response> getResponseAsync(Executor executor) { |
| CompletableFuture<Response> cf = |
| connection.whenReceivingResponse() |
| .thenCompose((v) -> getResponseAsyncImpl(executor)); |
| |
| operations.add(cf); |
| return cf; |
| } |
| } |