--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/src/jdk.incubator.httpclient/share/classes/jdk/incubator/http/Http1Exchange.java Tue Sep 12 19:03:39 2017 +0200
@@ -0,0 +1,247 @@
+/*
+ * Copyright (c) 2015, 2017, 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
+ private final List<CompletableFuture<?>> operations; // used for cancel
+ final Http1Request requestAction;
+ private volatile Http1Response<T> response;
+ // use to record possible cancellation raised before any operation
+ // has been initiated.
+ private IOException failed;
+ final HttpConnection connection;
+ final HttpClientImpl client;
+ final Executor executor;
+ volatile 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 = new LinkedList<>();
+ this.buffer = Utils.EMPTY_BYTEBUFFER;
+ 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 returnConnectionToPool)
+ throws IOException
+ {
+ BodyProcessor<T> processor = handler.apply(response.responseCode(),
+ response.responseHeaders());
+ CompletableFuture<T> bodyCF = response.readBody(processor,
+ returnConnectionToPool,
+ 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 returnConnectionToPool,
+ Executor executor)
+ {
+ BodyProcessor<T> processor = handler.apply(response.responseCode(),
+ response.responseHeaders());
+ CompletableFuture<T> bodyCF = response.readBody(processor,
+ returnConnectionToPool,
+ 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();
+ Response r = response.response();
+ buffer = response.getBuffer();
+ return r;
+ } 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;
+ if (operations.isEmpty()) {
+ failed = cause;
+ Log.logTrace("Http1Exchange: request [{0}/timeout={1}ms] no pending operation."
+ + "\n\tCan''t cancel yet with {2}",
+ request.uri(),
+ request.duration() == null ? -1 :
+ // calling duration.toMillis() can throw an exception.
+ // this is just debugging, we don't care if it overflows.
+ (request.duration().getSeconds() * 1000
+ + request.duration().getNano() / 1000000),
+ cause);
+ } else {
+ for (CompletableFuture<?> cf : operations) {
+ cf.completeExceptionally(cause);
+ count++;
+ }
+ }
+ Log.logError("Http1Exchange.cancel: count=" + count);
+ }
+
+ CompletableFuture<Response> getResponseAsyncImpl(Executor executor) {
+ return MinimalFuture.supply( () -> {
+ response = new Http1Response<>(connection, Http1Exchange.this);
+ response.readHeaders();
+ Response r = response.response();
+ buffer = response.getBuffer();
+ return r;
+ }, executor);
+ }
+
+ @Override
+ CompletableFuture<Response> getResponseAsync(Executor executor) {
+ CompletableFuture<Response> cf =
+ connection.whenReceivingResponse()
+ .thenCompose((v) -> getResponseAsyncImpl(executor));
+ IOException cause;
+ synchronized(this) {
+ operations.add(cf);
+ cause = failed;
+ failed = null;
+ }
+ if (cause != null) {
+ Log.logTrace("Http1Exchange: request [{0}/timeout={1}ms]"
+ + "\n\tCompleting exceptionally with {2}\n",
+ request.uri(),
+ request.duration() == null ? -1 :
+ // calling duration.toMillis() can throw an exception.
+ // this is just debugging, we don't care if it overflows.
+ (request.duration().getSeconds() * 1000
+ + request.duration().getNano() / 1000000),
+ cause);
+ cf.completeExceptionally(cause);
+ }
+ return cf;
+ }
+}