author | chegar |
Wed, 18 Apr 2018 12:03:06 +0100 | |
branch | http-client-branch |
changeset 56451 | 9585061fdb04 |
parent 56437 | f8b3f053cfbb |
parent 49765 | ee6f7a61f3a5 |
child 56463 | b583caf69b39 |
permissions | -rw-r--r-- |
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/* |
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* Copyright (c) 2015, 2018, Oracle and/or its affiliates. All rights reserved. |
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
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* |
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* This code is free software; you can redistribute it and/or modify it |
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* under the terms of the GNU General Public License version 2 only, as |
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* published by the Free Software Foundation. Oracle designates this |
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* particular file as subject to the "Classpath" exception as provided |
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* by Oracle in the LICENSE file that accompanied this code. |
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* |
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* This code is distributed in the hope that it will be useful, but WITHOUT |
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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* version 2 for more details (a copy is included in the LICENSE file that |
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* accompanied this code). |
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* |
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* You should have received a copy of the GNU General Public License version |
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* 2 along with this work; if not, write to the Free Software Foundation, |
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
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* |
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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* or visit www.oracle.com if you need additional information or have any |
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* questions. |
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*/ |
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package jdk.internal.net.http; |
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import java.io.EOFException; |
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import java.lang.System.Logger.Level; |
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import java.nio.ByteBuffer; |
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import java.util.List; |
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import java.util.concurrent.CompletableFuture; |
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import java.util.concurrent.CompletionStage; |
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import java.util.concurrent.Executor; |
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import java.util.concurrent.Flow; |
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import java.util.concurrent.atomic.AtomicBoolean; |
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import java.util.concurrent.atomic.AtomicLong; |
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import java.util.function.Consumer; |
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import java.util.function.Function; |
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import java.net.http.HttpHeaders; |
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import java.net.http.HttpResponse; |
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import jdk.internal.net.http.ResponseContent.BodyParser; |
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import jdk.internal.net.http.common.Log; |
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import jdk.internal.net.http.common.Logger; |
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import jdk.internal.net.http.common.MinimalFuture; |
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import jdk.internal.net.http.common.Utils; |
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import static java.net.http.HttpClient.Version.HTTP_1_1; |
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import static java.net.http.HttpResponse.BodySubscribers.discarding; |
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/** |
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* Handles a HTTP/1.1 response (headers + body). |
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* There can be more than one of these per Http exchange. |
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*/ |
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class Http1Response<T> { |
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private volatile ResponseContent content; |
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private final HttpRequestImpl request; |
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private Response response; |
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private final HttpConnection connection; |
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private HttpHeaders headers; |
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private int responseCode; |
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private final Http1Exchange<T> exchange; |
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private boolean return2Cache; // return connection to cache when finished |
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private final HeadersReader headersReader; // used to read the headers |
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private final BodyReader bodyReader; // used to read the body |
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private final Http1AsyncReceiver asyncReceiver; |
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private volatile EOFException eof; |
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// max number of bytes of (fixed length) body to ignore on redirect |
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private final static int MAX_IGNORE = 1024; |
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// Revisit: can we get rid of this? |
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static enum State {INITIAL, READING_HEADERS, READING_BODY, DONE} |
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private volatile State readProgress = State.INITIAL; |
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final Logger debug = Utils.getDebugLogger(this::dbgString, Utils.DEBUG); |
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final static AtomicLong responseCount = new AtomicLong(); |
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final long id = responseCount.incrementAndGet(); |
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Http1Response(HttpConnection conn, |
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Http1Exchange<T> exchange, |
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Http1AsyncReceiver asyncReceiver) { |
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this.readProgress = State.INITIAL; |
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this.request = exchange.request(); |
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this.exchange = exchange; |
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this.connection = conn; |
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this.asyncReceiver = asyncReceiver; |
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headersReader = new HeadersReader(this::advance); |
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bodyReader = new BodyReader(this::advance); |
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} |
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String dbgTag; |
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private String dbgString() { |
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String dbg = dbgTag; |
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if (dbg == null) { |
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String cdbg = connection.dbgTag; |
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if (cdbg != null) { |
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dbgTag = dbg = "Http1Response(id=" + id + ", " + cdbg + ")"; |
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} else { |
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dbg = "Http1Response(id=" + id + ")"; |
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} |
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} |
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return dbg; |
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} |
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// The ClientRefCountTracker is used to track the state |
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// of a pending operation. Altough there usually is a single |
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// point where the operation starts, it may terminate at |
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// different places. |
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private final class ClientRefCountTracker { |
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final HttpClientImpl client = connection.client(); |
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// state & 0x01 != 0 => acquire called |
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// state & 0x02 != 0 => tryRelease called |
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byte state; |
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public synchronized void acquire() { |
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if (state == 0) { |
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// increment the reference count on the HttpClientImpl |
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// to prevent the SelectorManager thread from exiting |
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// until our operation is complete. |
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if (debug.on()) |
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debug.log("Operation started: incrementing ref count for %s", client); |
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client.reference(); |
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state = 0x01; |
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} else { |
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if (debug.on()) |
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debug.log("Operation ref count for %s is already %s", |
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client, ((state & 0x2) == 0x2) ? "released." : "incremented!" ); |
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assert (state & 0x01) == 0 : "reference count already incremented"; |
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} |
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} |
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public synchronized void tryRelease() { |
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if (state == 0x01) { |
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// decrement the reference count on the HttpClientImpl |
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// to allow the SelectorManager thread to exit if no |
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// other operation is pending and the facade is no |
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// longer referenced. |
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if (debug.on()) |
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debug.log("Operation finished: decrementing ref count for %s", client); |
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client.unreference(); |
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} else if (state == 0) { |
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if (debug.on()) |
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debug.log("Operation finished: releasing ref count for %s", client); |
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} else if ((state & 0x02) == 0x02) { |
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if (debug.on()) |
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debug.log("ref count for %s already released", client); |
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} |
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state |= 0x02; |
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} |
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} |
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public CompletableFuture<Response> readHeadersAsync(Executor executor) { |
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if (debug.on()) |
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debug.log("Reading Headers: (remaining: " |
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+ asyncReceiver.remaining() +") " + readProgress); |
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// with expect continue we will resume reading headers + body. |
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asyncReceiver.unsubscribe(bodyReader); |
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bodyReader.reset(); |
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Http1HeaderParser hd = new Http1HeaderParser(); |
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readProgress = State.READING_HEADERS; |
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headersReader.start(hd); |
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asyncReceiver.subscribe(headersReader); |
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CompletableFuture<State> cf = headersReader.completion(); |
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assert cf != null : "parsing not started"; |
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Function<State, Response> lambda = (State completed) -> { |
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assert completed == State.READING_HEADERS; |
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if (debug.on()) |
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debug.log("Reading Headers: creating Response object;" |
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+ " state is now " + readProgress); |
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asyncReceiver.unsubscribe(headersReader); |
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responseCode = hd.responseCode(); |
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headers = hd.headers(); |
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response = new Response(request, |
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exchange.getExchange(), |
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headers, |
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connection, |
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responseCode, |
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HTTP_1_1); |
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if (Log.headers()) { |
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StringBuilder sb = new StringBuilder("RESPONSE HEADERS:\n"); |
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Log.dumpHeaders(sb, " ", headers); |
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Log.logHeaders(sb.toString()); |
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} |
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return response; |
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}; |
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if (executor != null) { |
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return cf.thenApplyAsync(lambda, executor); |
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} else { |
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return cf.thenApply(lambda); |
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} |
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} |
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private boolean finished; |
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synchronized void completed() { |
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finished = true; |
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} |
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synchronized boolean finished() { |
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return finished; |
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} |
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int fixupContentLen(int clen) { |
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if (request.method().equalsIgnoreCase("HEAD")) { |
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return 0; |
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} |
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if (clen == -1) { |
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if (headers.firstValue("Transfer-encoding").orElse("") |
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.equalsIgnoreCase("chunked")) { |
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return -1; |
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} |
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return 0; |
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} |
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return clen; |
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} |
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/** |
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* Read up to MAX_IGNORE bytes discarding |
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*/ |
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public CompletableFuture<Void> ignoreBody(Executor executor) { |
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int clen = (int)headers.firstValueAsLong("Content-Length").orElse(-1); |
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if (clen == -1 || clen > MAX_IGNORE) { |
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connection.close(); |
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return MinimalFuture.completedFuture(null); // not treating as error |
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} else { |
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return readBody(discarding(), true, executor); |
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} |
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} |
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static final Flow.Subscription NOP = new Flow.Subscription() { |
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@Override |
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public void request(long n) { } |
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public void cancel() { } |
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}; |
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/** |
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* The Http1AsyncReceiver ensures that all calls to |
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* the subscriber, including onSubscribe, occur sequentially. |
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* There could however be some race conditions that could happen |
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* in case of unexpected errors thrown at unexpected places, which |
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* may cause onError to be called multiple times. |
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* The Http1BodySubscriber will ensure that the user subscriber |
|
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* is actually completed only once - and only after it is |
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* subscribed. |
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* @param <U> The type of response. |
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*/ |
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final static class Http1BodySubscriber<U> implements HttpResponse.BodySubscriber<U> { |
|
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final HttpResponse.BodySubscriber<U> userSubscriber; |
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final AtomicBoolean completed = new AtomicBoolean(); |
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volatile Throwable withError; |
|
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volatile boolean subscribed; |
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Http1BodySubscriber(HttpResponse.BodySubscriber<U> userSubscriber) { |
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this.userSubscriber = userSubscriber; |
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} |
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||
262 |
// propagate the error to the user subscriber, even if not |
|
263 |
// subscribed yet. |
|
264 |
private void propagateError(Throwable t) { |
|
265 |
assert t != null; |
|
266 |
try { |
|
267 |
// if unsubscribed at this point, it will not |
|
268 |
// get subscribed later - so do it now and |
|
269 |
// propagate the error |
|
270 |
if (subscribed == false) { |
|
271 |
subscribed = true; |
|
272 |
userSubscriber.onSubscribe(NOP); |
|
273 |
} |
|
274 |
} finally { |
|
275 |
// if onError throws then there is nothing to do |
|
276 |
// here: let the caller deal with it by logging |
|
277 |
// and closing the connection. |
|
278 |
userSubscriber.onError(t); |
|
279 |
} |
|
280 |
} |
|
281 |
||
282 |
// complete the subscriber, either normally or exceptionally |
|
283 |
// ensure that the subscriber is completed only once. |
|
284 |
private void complete(Throwable t) { |
|
285 |
if (completed.compareAndSet(false, true)) { |
|
286 |
t = withError = Utils.getCompletionCause(t); |
|
287 |
if (t == null) { |
|
288 |
assert subscribed; |
|
289 |
try { |
|
290 |
userSubscriber.onComplete(); |
|
291 |
} catch (Throwable x) { |
|
292 |
propagateError(t = withError = Utils.getCompletionCause(x)); |
|
293 |
// rethrow and let the caller deal with it. |
|
294 |
// (i.e: log and close the connection) |
|
295 |
// arguably we could decide to not throw and let the |
|
296 |
// connection be reused since we should have received and |
|
297 |
// parsed all the bytes when we reach here. |
|
298 |
throw x; |
|
299 |
} |
|
300 |
} else { |
|
301 |
propagateError(t); |
|
302 |
} |
|
303 |
} |
|
304 |
} |
|
305 |
||
306 |
@Override |
|
307 |
public CompletionStage<U> getBody() { |
|
308 |
return userSubscriber.getBody(); |
|
309 |
} |
|
310 |
@Override |
|
311 |
public void onSubscribe(Flow.Subscription subscription) { |
|
312 |
if (!subscribed) { |
|
313 |
subscribed = true; |
|
314 |
userSubscriber.onSubscribe(subscription); |
|
315 |
} else { |
|
316 |
// could be already subscribed and completed |
|
317 |
// if an unexpected error occurred before the actual |
|
318 |
// subscription - though that's not supposed |
|
319 |
// happen. |
|
320 |
assert completed.get(); |
|
321 |
} |
|
322 |
} |
|
323 |
@Override |
|
324 |
public void onNext(List<ByteBuffer> item) { |
|
325 |
assert !completed.get(); |
|
326 |
userSubscriber.onNext(item); |
|
327 |
} |
|
328 |
@Override |
|
329 |
public void onError(Throwable throwable) { |
|
330 |
complete(throwable); |
|
331 |
} |
|
332 |
@Override |
|
333 |
public void onComplete() { |
|
334 |
complete(null); |
|
48083 | 335 |
} |
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336 |
} |
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|
337 |
|
48083 | 338 |
public <U> CompletableFuture<U> readBody(HttpResponse.BodySubscriber<U> p, |
339 |
boolean return2Cache, |
|
340 |
Executor executor) { |
|
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|
341 |
this.return2Cache = return2Cache; |
49765 | 342 |
final Http1BodySubscriber<U> subscriber = new Http1BodySubscriber<>(p); |
343 |
||
344 |
final CompletableFuture<U> cf = new MinimalFuture<>(); |
|
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|
345 |
|
48083 | 346 |
int clen0 = (int)headers.firstValueAsLong("Content-Length").orElse(-1); |
347 |
||
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348 |
final int clen = fixupContentLen(clen0); |
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349 |
|
48083 | 350 |
// expect-continue reads headers and body twice. |
351 |
// if we reach here, we must reset the headersReader state. |
|
352 |
asyncReceiver.unsubscribe(headersReader); |
|
353 |
headersReader.reset(); |
|
49765 | 354 |
ClientRefCountTracker refCountTracker = new ClientRefCountTracker(); |
48083 | 355 |
|
49765 | 356 |
// We need to keep hold on the client facade until the |
357 |
// tracker has been incremented. |
|
358 |
connection.client().reference(); |
|
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|
359 |
executor.execute(() -> { |
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|
360 |
try { |
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|
361 |
content = new ResponseContent( |
49765 | 362 |
connection, clen, headers, subscriber, |
48083 | 363 |
this::onFinished |
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364 |
); |
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|
365 |
if (cf.isCompletedExceptionally()) { |
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366 |
// if an error occurs during subscription |
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|
367 |
connection.close(); |
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|
368 |
return; |
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|
369 |
} |
48083 | 370 |
// increment the reference count on the HttpClientImpl |
371 |
// to prevent the SelectorManager thread from exiting until |
|
372 |
// the body is fully read. |
|
49765 | 373 |
refCountTracker.acquire(); |
48083 | 374 |
bodyReader.start(content.getBodyParser( |
375 |
(t) -> { |
|
376 |
try { |
|
377 |
if (t != null) { |
|
49765 | 378 |
subscriber.onError(t); |
48083 | 379 |
connection.close(); |
49765 | 380 |
cf.completeExceptionally(t); |
48083 | 381 |
} |
382 |
} finally { |
|
383 |
bodyReader.onComplete(t); |
|
384 |
} |
|
385 |
})); |
|
386 |
CompletableFuture<State> bodyReaderCF = bodyReader.completion(); |
|
387 |
asyncReceiver.subscribe(bodyReader); |
|
388 |
assert bodyReaderCF != null : "parsing not started"; |
|
389 |
// Make sure to keep a reference to asyncReceiver from |
|
390 |
// within this |
|
391 |
CompletableFuture<?> trailingOp = bodyReaderCF.whenComplete((s,t) -> { |
|
392 |
t = Utils.getCompletionCause(t); |
|
393 |
try { |
|
49765 | 394 |
if (t == null) { |
395 |
if (debug.on()) debug.log("Finished reading body: " + s); |
|
48083 | 396 |
assert s == State.READING_BODY; |
397 |
} |
|
49765 | 398 |
if (t != null) { |
399 |
subscriber.onError(t); |
|
48083 | 400 |
cf.completeExceptionally(t); |
401 |
} |
|
402 |
} catch (Throwable x) { |
|
403 |
// not supposed to happen |
|
404 |
asyncReceiver.onReadError(x); |
|
49765 | 405 |
} finally { |
406 |
// we're done: release the ref count for |
|
407 |
// the current operation. |
|
408 |
refCountTracker.tryRelease(); |
|
48083 | 409 |
} |
410 |
}); |
|
411 |
connection.addTrailingOperation(trailingOp); |
|
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|
412 |
} catch (Throwable t) { |
49765 | 413 |
if (debug.on()) debug.log("Failed reading body: " + t); |
48083 | 414 |
try { |
49765 | 415 |
subscriber.onError(t); |
416 |
cf.completeExceptionally(t); |
|
48083 | 417 |
} finally { |
418 |
asyncReceiver.onReadError(t); |
|
419 |
} |
|
49765 | 420 |
} finally { |
421 |
connection.client().unreference(); |
|
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|
422 |
} |
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|
423 |
}); |
49765 | 424 |
try { |
425 |
p.getBody().whenComplete((U u, Throwable t) -> { |
|
426 |
if (t == null) |
|
427 |
cf.complete(u); |
|
428 |
else |
|
429 |
cf.completeExceptionally(t); |
|
430 |
}); |
|
431 |
} catch (Throwable t) { |
|
432 |
cf.completeExceptionally(t); |
|
433 |
asyncReceiver.setRetryOnError(false); |
|
434 |
asyncReceiver.onReadError(t); |
|
435 |
} |
|
436 |
||
437 |
return cf.whenComplete((s,t) -> { |
|
438 |
if (t != null) { |
|
439 |
// If an exception occurred, release the |
|
440 |
// ref count for the current operation, as |
|
441 |
// it may never be triggered otherwise |
|
442 |
// (BodySubscriber ofInputStream) |
|
443 |
// If there was no exception then the |
|
444 |
// ref count will be/have been released when |
|
445 |
// the last byte of the response is/was received |
|
446 |
refCountTracker.tryRelease(); |
|
447 |
} |
|
448 |
}); |
|
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|
449 |
} |
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changeset
|
450 |
|
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|
451 |
|
48083 | 452 |
private void onFinished() { |
453 |
asyncReceiver.clear(); |
|
454 |
if (return2Cache) { |
|
455 |
Log.logTrace("Attempting to return connection to the pool: {0}", connection); |
|
456 |
// TODO: need to do something here? |
|
457 |
// connection.setAsyncCallbacks(null, null, null); |
|
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|
458 |
|
48083 | 459 |
// don't return the connection to the cache if EOF happened. |
49765 | 460 |
if (debug.on()) |
461 |
debug.log(connection.getConnectionFlow() + ": return to HTTP/1.1 pool"); |
|
48083 | 462 |
connection.closeOrReturnToCache(eof == null ? headers : null); |
463 |
} |
|
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|
464 |
} |
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|
465 |
|
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|
466 |
HttpHeaders responseHeaders() { |
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|
467 |
return headers; |
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|
468 |
} |
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changeset
|
469 |
|
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|
470 |
int responseCode() { |
7133f144981a
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|
471 |
return responseCode; |
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|
472 |
} |
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|
473 |
|
48083 | 474 |
// ================ Support for plugging into Http1Receiver ================= |
475 |
// ============================================================================ |
|
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|
476 |
|
48083 | 477 |
// Callback: Error receiver: Consumer of Throwable. |
478 |
void onReadError(Throwable t) { |
|
479 |
Log.logError(t); |
|
480 |
Receiver<?> receiver = receiver(readProgress); |
|
481 |
if (t instanceof EOFException) { |
|
482 |
debug.log(Level.DEBUG, "onReadError: received EOF"); |
|
483 |
eof = (EOFException) t; |
|
484 |
} |
|
485 |
CompletableFuture<?> cf = receiver == null ? null : receiver.completion(); |
|
486 |
debug.log(Level.DEBUG, () -> "onReadError: cf is " |
|
487 |
+ (cf == null ? "null" |
|
488 |
: (cf.isDone() ? "already completed" |
|
489 |
: "not yet completed"))); |
|
49765 | 490 |
if (cf != null) { |
491 |
cf.completeExceptionally(t); |
|
492 |
} else { |
|
493 |
debug.log(Level.DEBUG, "onReadError", t); |
|
494 |
} |
|
48083 | 495 |
debug.log(Level.DEBUG, () -> "closing connection: cause is " + t); |
496 |
connection.close(); |
|
497 |
} |
|
498 |
||
499 |
// ======================================================================== |
|
500 |
||
501 |
private State advance(State previous) { |
|
502 |
assert readProgress == previous; |
|
503 |
switch(previous) { |
|
504 |
case READING_HEADERS: |
|
505 |
asyncReceiver.unsubscribe(headersReader); |
|
506 |
return readProgress = State.READING_BODY; |
|
507 |
case READING_BODY: |
|
508 |
asyncReceiver.unsubscribe(bodyReader); |
|
509 |
return readProgress = State.DONE; |
|
510 |
default: |
|
511 |
throw new InternalError("can't advance from " + previous); |
|
512 |
} |
|
513 |
} |
|
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changeset
|
514 |
|
48083 | 515 |
Receiver<?> receiver(State state) { |
516 |
switch(state) { |
|
517 |
case READING_HEADERS: return headersReader; |
|
518 |
case READING_BODY: return bodyReader; |
|
519 |
default: return null; |
|
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|
520 |
} |
48083 | 521 |
|
522 |
} |
|
523 |
||
524 |
static abstract class Receiver<T> |
|
525 |
implements Http1AsyncReceiver.Http1AsyncDelegate { |
|
526 |
abstract void start(T parser); |
|
527 |
abstract CompletableFuture<State> completion(); |
|
528 |
// accepts a buffer from upstream. |
|
529 |
// this should be implemented as a simple call to |
|
530 |
// accept(ref, parser, cf) |
|
531 |
public abstract boolean tryAsyncReceive(ByteBuffer buffer); |
|
532 |
public abstract void onReadError(Throwable t); |
|
533 |
// handle a byte buffer received from upstream. |
|
534 |
// this method should set the value of Http1Response.buffer |
|
535 |
// to ref.get() before beginning parsing. |
|
536 |
abstract void handle(ByteBuffer buf, T parser, |
|
537 |
CompletableFuture<State> cf); |
|
538 |
// resets this objects state so that it can be reused later on |
|
539 |
// typically puts the reference to parser and completion to null |
|
540 |
abstract void reset(); |
|
541 |
||
542 |
// accepts a byte buffer received from upstream |
|
543 |
// returns true if the buffer is fully parsed and more data can |
|
544 |
// be accepted, false otherwise. |
|
545 |
final boolean accept(ByteBuffer buf, T parser, |
|
546 |
CompletableFuture<State> cf) { |
|
547 |
if (cf == null || parser == null || cf.isDone()) return false; |
|
548 |
handle(buf, parser, cf); |
|
549 |
return !cf.isDone(); |
|
550 |
} |
|
551 |
public abstract void onSubscribe(AbstractSubscription s); |
|
552 |
public abstract AbstractSubscription subscription(); |
|
553 |
||
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|
554 |
} |
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|
555 |
|
48083 | 556 |
// Invoked with each new ByteBuffer when reading headers... |
557 |
final class HeadersReader extends Receiver<Http1HeaderParser> { |
|
558 |
final Consumer<State> onComplete; |
|
559 |
volatile Http1HeaderParser parser; |
|
560 |
volatile CompletableFuture<State> cf; |
|
561 |
volatile long count; // bytes parsed (for debug) |
|
562 |
volatile AbstractSubscription subscription; |
|
563 |
||
564 |
HeadersReader(Consumer<State> onComplete) { |
|
565 |
this.onComplete = onComplete; |
|
566 |
} |
|
567 |
||
568 |
@Override |
|
569 |
public AbstractSubscription subscription() { |
|
570 |
return subscription; |
|
571 |
} |
|
572 |
||
573 |
@Override |
|
574 |
public void onSubscribe(AbstractSubscription s) { |
|
575 |
this.subscription = s; |
|
576 |
s.request(1); |
|
577 |
} |
|
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|
578 |
|
48083 | 579 |
@Override |
580 |
void reset() { |
|
581 |
cf = null; |
|
582 |
parser = null; |
|
583 |
count = 0; |
|
584 |
subscription = null; |
|
585 |
} |
|
586 |
||
587 |
// Revisit: do we need to support restarting? |
|
588 |
@Override |
|
589 |
final void start(Http1HeaderParser hp) { |
|
590 |
count = 0; |
|
591 |
cf = new MinimalFuture<>(); |
|
592 |
parser = hp; |
|
593 |
} |
|
594 |
||
595 |
@Override |
|
596 |
CompletableFuture<State> completion() { |
|
597 |
return cf; |
|
598 |
} |
|
599 |
||
600 |
@Override |
|
601 |
public final boolean tryAsyncReceive(ByteBuffer ref) { |
|
602 |
boolean hasDemand = subscription.demand().tryDecrement(); |
|
603 |
assert hasDemand; |
|
604 |
boolean needsMore = accept(ref, parser, cf); |
|
605 |
if (needsMore) subscription.request(1); |
|
606 |
return needsMore; |
|
607 |
} |
|
608 |
||
609 |
@Override |
|
610 |
public final void onReadError(Throwable t) { |
|
611 |
Http1Response.this.onReadError(t); |
|
612 |
} |
|
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|
613 |
|
48083 | 614 |
@Override |
615 |
final void handle(ByteBuffer b, |
|
616 |
Http1HeaderParser parser, |
|
617 |
CompletableFuture<State> cf) { |
|
618 |
assert cf != null : "parsing not started"; |
|
619 |
assert parser != null : "no parser"; |
|
620 |
try { |
|
621 |
count += b.remaining(); |
|
49765 | 622 |
if (debug.on()) |
623 |
debug.log("Sending " + b.remaining() + "/" + b.capacity() |
|
624 |
+ " bytes to header parser"); |
|
48083 | 625 |
if (parser.parse(b)) { |
626 |
count -= b.remaining(); |
|
49765 | 627 |
if (debug.on()) |
628 |
debug.log("Parsing headers completed. bytes=" + count); |
|
48083 | 629 |
onComplete.accept(State.READING_HEADERS); |
630 |
cf.complete(State.READING_HEADERS); |
|
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changeset
|
631 |
} |
48083 | 632 |
} catch (Throwable t) { |
49765 | 633 |
if (debug.on()) |
634 |
debug.log("Header parser failed to handle buffer: " + t); |
|
48083 | 635 |
cf.completeExceptionally(t); |
636 |
} |
|
637 |
} |
|
49765 | 638 |
|
639 |
@Override |
|
640 |
public void close(Throwable error) { |
|
641 |
// if there's no error nothing to do: the cf should/will |
|
642 |
// be completed. |
|
643 |
if (error != null) { |
|
644 |
CompletableFuture<State> cf = this.cf; |
|
645 |
if (cf != null) { |
|
646 |
if (debug.on()) |
|
647 |
debug.log("close: completing header parser CF with " + error); |
|
648 |
cf.completeExceptionally(error); |
|
649 |
} |
|
650 |
} |
|
651 |
} |
|
48083 | 652 |
} |
653 |
||
654 |
// Invoked with each new ByteBuffer when reading bodies... |
|
655 |
final class BodyReader extends Receiver<BodyParser> { |
|
656 |
final Consumer<State> onComplete; |
|
657 |
volatile BodyParser parser; |
|
658 |
volatile CompletableFuture<State> cf; |
|
659 |
volatile AbstractSubscription subscription; |
|
660 |
BodyReader(Consumer<State> onComplete) { |
|
661 |
this.onComplete = onComplete; |
|
662 |
} |
|
663 |
||
664 |
@Override |
|
665 |
void reset() { |
|
666 |
parser = null; |
|
667 |
cf = null; |
|
668 |
subscription = null; |
|
669 |
} |
|
670 |
||
671 |
// Revisit: do we need to support restarting? |
|
672 |
@Override |
|
673 |
final void start(BodyParser parser) { |
|
674 |
cf = new MinimalFuture<>(); |
|
675 |
this.parser = parser; |
|
676 |
} |
|
677 |
||
678 |
@Override |
|
679 |
CompletableFuture<State> completion() { |
|
680 |
return cf; |
|
681 |
} |
|
682 |
||
683 |
@Override |
|
684 |
public final boolean tryAsyncReceive(ByteBuffer b) { |
|
685 |
return accept(b, parser, cf); |
|
686 |
} |
|
687 |
||
688 |
@Override |
|
689 |
public final void onReadError(Throwable t) { |
|
690 |
Http1Response.this.onReadError(t); |
|
691 |
} |
|
692 |
||
693 |
@Override |
|
694 |
public AbstractSubscription subscription() { |
|
695 |
return subscription; |
|
696 |
} |
|
697 |
||
698 |
@Override |
|
699 |
public void onSubscribe(AbstractSubscription s) { |
|
700 |
this.subscription = s; |
|
49765 | 701 |
try { |
702 |
parser.onSubscribe(s); |
|
703 |
} catch (Throwable t) { |
|
704 |
cf.completeExceptionally(t); |
|
705 |
throw t; |
|
706 |
} |
|
48083 | 707 |
} |
708 |
||
709 |
@Override |
|
710 |
final void handle(ByteBuffer b, |
|
711 |
BodyParser parser, |
|
712 |
CompletableFuture<State> cf) { |
|
713 |
assert cf != null : "parsing not started"; |
|
714 |
assert parser != null : "no parser"; |
|
715 |
try { |
|
49765 | 716 |
if (debug.on()) |
717 |
debug.log("Sending " + b.remaining() + "/" + b.capacity() |
|
718 |
+ " bytes to body parser"); |
|
48083 | 719 |
parser.accept(b); |
720 |
} catch (Throwable t) { |
|
49765 | 721 |
if (debug.on()) |
722 |
debug.log("Body parser failed to handle buffer: " + t); |
|
48083 | 723 |
if (!cf.isDone()) { |
724 |
cf.completeExceptionally(t); |
|
42460
7133f144981a
8170648: Move java.net.http package out of Java SE to incubator namespace
michaelm
parents:
diff
changeset
|
725 |
} |
7133f144981a
8170648: Move java.net.http package out of Java SE to incubator namespace
michaelm
parents:
diff
changeset
|
726 |
} |
7133f144981a
8170648: Move java.net.http package out of Java SE to incubator namespace
michaelm
parents:
diff
changeset
|
727 |
} |
48083 | 728 |
|
729 |
final void onComplete(Throwable closedExceptionally) { |
|
730 |
if (cf.isDone()) return; |
|
731 |
if (closedExceptionally != null) { |
|
732 |
cf.completeExceptionally(closedExceptionally); |
|
733 |
} else { |
|
734 |
onComplete.accept(State.READING_BODY); |
|
735 |
cf.complete(State.READING_BODY); |
|
736 |
} |
|
737 |
} |
|
738 |
||
739 |
@Override |
|
49765 | 740 |
public final void close(Throwable error) { |
741 |
CompletableFuture<State> cf = this.cf; |
|
742 |
if (cf != null && !cf.isDone()) { |
|
743 |
// we want to make sure dependent actions are triggered |
|
744 |
// in order to make sure the client reference count |
|
745 |
// is decremented |
|
746 |
if (error != null) { |
|
747 |
if (debug.on()) |
|
748 |
debug.log("close: completing body parser CF with " + error); |
|
749 |
cf.completeExceptionally(error); |
|
750 |
} else { |
|
751 |
if (debug.on()) |
|
752 |
debug.log("close: completing body parser CF"); |
|
753 |
cf.complete(State.READING_BODY); |
|
754 |
} |
|
755 |
} |
|
756 |
} |
|
757 |
||
758 |
@Override |
|
48083 | 759 |
public String toString() { |
760 |
return super.toString() + "/parser=" + String.valueOf(parser); |
|
761 |
} |
|
42460
7133f144981a
8170648: Move java.net.http package out of Java SE to incubator namespace
michaelm
parents:
diff
changeset
|
762 |
} |
7133f144981a
8170648: Move java.net.http package out of Java SE to incubator namespace
michaelm
parents:
diff
changeset
|
763 |
} |