author | egahlin |
Thu, 13 Dec 2018 23:25:00 +0100 | |
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parent 51214 | 67736b4846a0 |
permissions | -rw-r--r-- |
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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. 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.jfr.event.runtime; |
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import java.net.DatagramPacket; |
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import java.net.DatagramSocket; |
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import java.net.InetAddress; |
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import java.util.HashSet; |
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import java.util.List; |
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import java.util.Set; |
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import jdk.jfr.Recording; |
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import jdk.jfr.consumer.RecordedEvent; |
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import jdk.test.lib.Asserts; |
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import jdk.test.lib.Platform; |
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import jdk.test.lib.jfr.EventNames; |
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import jdk.test.lib.jfr.Events; |
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/** |
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* @test |
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* @key jfr |
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* @requires vm.hasJFR |
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* @library /test/lib |
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* |
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* @run main/othervm jdk.jfr.event.runtime.TestNetworkUtilizationEvent |
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*/ |
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public class TestNetworkUtilizationEvent { |
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private static final long packetSendCount = 100; |
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public static void main(String[] args) throws Throwable { |
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Recording recording = new Recording(); |
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recording.enable(EventNames.NetworkUtilization).with("period", "endChunk"); |
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recording.start(); |
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DatagramSocket socket = new DatagramSocket(); |
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String msg = "hello!"; |
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byte[] buf = msg.getBytes(); |
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forceEndChunk(); |
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// Send a few packets both to the loopback address as well to an |
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// external |
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DatagramPacket packet = new DatagramPacket(buf, buf.length, InetAddress.getLoopbackAddress(), 12345); |
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for (int i = 0; i < packetSendCount; ++i) { |
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socket.send(packet); |
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} |
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packet = new DatagramPacket(buf, buf.length, InetAddress.getByName("10.0.0.0"), 12345); |
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for (int i = 0; i < packetSendCount; ++i) { |
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socket.send(packet); |
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} |
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forceEndChunk(); |
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socket.close(); |
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// Now there should have been traffic on at least two different |
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// interfaces |
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recording.stop(); |
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Set<String> networkInterfaces = new HashSet<>(); |
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List<RecordedEvent> events = Events.fromRecording(recording); |
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Events.hasEvents(events); |
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for (RecordedEvent event : events) { |
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System.out.println(event); |
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Events.assertField(event, "writeRate").atLeast(0L).atMost(1000L * Integer.MAX_VALUE); |
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Events.assertField(event, "readRate").atLeast(0L).atMost(1000L * Integer.MAX_VALUE); |
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Events.assertField(event, "networkInterface").notNull(); |
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if (event.getLong("writeRate") > 0) { |
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networkInterfaces.add(event.getString("networkInterface")); |
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} |
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} |
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if (Platform.isWindows() || Platform.isSolaris()) { |
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// Windows and Solaris do not track statistics for the loopback |
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// interface |
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Asserts.assertGreaterThanOrEqual(networkInterfaces.size(), 1); |
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} else { |
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Asserts.assertGreaterThanOrEqual(networkInterfaces.size(), 2); |
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} |
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} |
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private static void forceEndChunk() { |
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try(Recording r = new Recording()) { |
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r.start(); |
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r.stop(); |
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} |
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} |
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} |