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/*
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* Copyright (c) 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.
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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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import jdk.internal.net.http.common.OperationTrackers;
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import jdk.internal.net.http.common.OperationTrackers.Tracker;
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import java.net.http.HttpClient;
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import java.util.concurrent.ConcurrentLinkedQueue;
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import java.util.stream.Collectors;
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/**
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* A small helper class to help track clients which still
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* have pending operations at the end of a test.
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*/
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public class ReferenceTracker {
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private final ConcurrentLinkedQueue<Tracker> TRACKERS
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= new ConcurrentLinkedQueue<Tracker>();
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public static final ReferenceTracker INSTANCE
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= new ReferenceTracker();
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public HttpClient track(HttpClient client) {
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Tracker tracker = OperationTrackers.getTracker(client);
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assert tracker != null;
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TRACKERS.add(tracker);
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return client;
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}
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public long getTrackedClientCount() {
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return TRACKERS.size();
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}
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public StringBuilder diagnose(StringBuilder warnings) {
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for (Tracker tracker : TRACKERS) {
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checkOutstandingOperations(warnings, tracker);
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}
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return warnings;
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}
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public boolean hasOutstandingOperations() {
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return TRACKERS.stream().anyMatch(t -> t.getOutstandingOperations() > 0);
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}
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public long getOutstandingOperationsCount() {
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return TRACKERS.stream()
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.map(Tracker::getOutstandingOperations)
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.filter(n -> n > 0)
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.collect(Collectors.summingLong(n -> n));
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}
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public long getOutstandingClientCount() {
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return TRACKERS.stream()
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.map(Tracker::getOutstandingOperations)
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.filter(n -> n > 0)
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.count();
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}
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public AssertionError check(long graceDelayMs) {
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AssertionError fail = null;
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if (hasOutstandingOperations()) {
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try {
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Thread.sleep(graceDelayMs);
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} catch (InterruptedException x) {
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// OK
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}
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StringBuilder warnings = diagnose(new StringBuilder());
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addSummary(warnings);
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if (hasOutstandingOperations()) {
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fail = new AssertionError(warnings.toString());
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}
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} else {
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System.out.println("PASSED: No outstanding operations found in "
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+ getTrackedClientCount() + " clients");
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}
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return fail;
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}
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private void addSummary(StringBuilder warning) {
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long activeClients = getOutstandingClientCount();
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long operations = getOutstandingOperationsCount();
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long tracked = getTrackedClientCount();
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if (warning.length() > 0) warning.append("\n");
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int pos = warning.length();
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warning.append("Found ")
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.append(activeClients)
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.append(" client still active, with ")
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.append(operations)
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.append(" operations still pending out of ")
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.append(tracked)
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.append(" tracked clients.");
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System.out.println(warning.toString().substring(pos));
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System.err.println(warning.toString().substring(pos));
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}
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private static void checkOutstandingOperations(StringBuilder warning, Tracker tracker) {
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if (tracker.getOutstandingOperations() > 0) {
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if (warning.length() > 0) warning.append("\n");
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int pos = warning.length();
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warning.append("WARNING: tracker for " + tracker.getName() + " has outstanding operations:");
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warning.append("\n\tPending HTTP/1.1 operations: " + tracker.getOutstandingHttpOperations());
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warning.append("\n\tPending HTTP/2 streams: " + tracker.getOutstandingHttp2Streams());
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warning.append("\n\tPending WebSocket operations: " + tracker.getOutstandingWebSocketOperations());
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warning.append("\n\tTotal pending operations: " + tracker.getOutstandingOperations());
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warning.append("\n\tFacade referenced: " + tracker.isFacadeReferenced());
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System.out.println(warning.toString().substring(pos));
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System.err.println(warning.toString().substring(pos));
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}
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}
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}
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