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/*
* Copyright (c) 2018, 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.
*
* 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.
*/
import jdk.internal.net.http.common.OperationTrackers;
import jdk.internal.net.http.common.OperationTrackers.Tracker;
import java.net.http.HttpClient;
import java.util.concurrent.ConcurrentLinkedQueue;
import java.util.stream.Collectors;
/**
* A small helper class to help track clients which still
* have pending operations at the end of a test.
*/
public class ReferenceTracker {
private final ConcurrentLinkedQueue<Tracker> TRACKERS
= new ConcurrentLinkedQueue<Tracker>();
public static final ReferenceTracker INSTANCE
= new ReferenceTracker();
public HttpClient track(HttpClient client) {
Tracker tracker = OperationTrackers.getTracker(client);
assert tracker != null;
TRACKERS.add(tracker);
return client;
}
public long getTrackedClientCount() {
return TRACKERS.size();
}
public StringBuilder diagnose(StringBuilder warnings) {
for (Tracker tracker : TRACKERS) {
checkOutstandingOperations(warnings, tracker);
}
return warnings;
}
public boolean hasOutstandingOperations() {
return TRACKERS.stream().anyMatch(t -> t.getOutstandingOperations() > 0);
}
public long getOutstandingOperationsCount() {
return TRACKERS.stream()
.map(Tracker::getOutstandingOperations)
.filter(n -> n > 0)
.collect(Collectors.summingLong(n -> n));
}
public long getOutstandingClientCount() {
return TRACKERS.stream()
.map(Tracker::getOutstandingOperations)
.filter(n -> n > 0)
.count();
}
public AssertionError check(long graceDelayMs) {
AssertionError fail = null;
if (hasOutstandingOperations()) {
try {
Thread.sleep(graceDelayMs);
} catch (InterruptedException x) {
// OK
}
StringBuilder warnings = diagnose(new StringBuilder());
addSummary(warnings);
if (hasOutstandingOperations()) {
fail = new AssertionError(warnings.toString());
}
} else {
System.out.println("PASSED: No outstanding operations found in "
+ getTrackedClientCount() + " clients");
}
return fail;
}
private void addSummary(StringBuilder warning) {
long activeClients = getOutstandingClientCount();
long operations = getOutstandingOperationsCount();
long tracked = getTrackedClientCount();
if (warning.length() > 0) warning.append("\n");
int pos = warning.length();
warning.append("Found ")
.append(activeClients)
.append(" client still active, with ")
.append(operations)
.append(" operations still pending out of ")
.append(tracked)
.append(" tracked clients.");
System.out.println(warning.toString().substring(pos));
System.err.println(warning.toString().substring(pos));
}
private static void checkOutstandingOperations(StringBuilder warning, Tracker tracker) {
if (tracker.getOutstandingOperations() > 0) {
if (warning.length() > 0) warning.append("\n");
int pos = warning.length();
warning.append("WARNING: tracker for " + tracker.getName() + " has outstanding operations:");
warning.append("\n\tPending HTTP/1.1 operations: " + tracker.getOutstandingHttpOperations());
warning.append("\n\tPending HTTP/2 streams: " + tracker.getOutstandingHttp2Streams());
warning.append("\n\tPending WebSocket operations: " + tracker.getOutstandingWebSocketOperations());
warning.append("\n\tTotal pending operations: " + tracker.getOutstandingOperations());
warning.append("\n\tFacade referenced: " + tracker.isFacadeReferenced());
System.out.println(warning.toString().substring(pos));
System.err.println(warning.toString().substring(pos));
}
}
}
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