192 lines
7.3 KiB
Java
192 lines
7.3 KiB
Java
/*
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* Copyright (c) 2008, 2015, 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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/*
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* @test
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* @bug 6334663
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* @summary Test that TabularDataSupport preserves the order elements were added
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* @author Eamonn McManus
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* @modules java.management/javax.management.openmbean:open
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*/
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import java.io.ByteArrayInputStream;
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import java.io.ByteArrayOutputStream;
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import java.io.ObjectInputStream;
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import java.io.ObjectOutputStream;
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import java.lang.reflect.Field;
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import java.lang.reflect.Modifier;
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import java.util.ArrayList;
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import java.util.HashMap;
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import java.util.LinkedHashMap;
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import java.util.List;
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import java.util.Map;
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import javax.management.JMX;
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import javax.management.MBeanServer;
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import javax.management.MBeanServerFactory;
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import javax.management.ObjectName;
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import javax.management.openmbean.CompositeData;
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import javax.management.openmbean.CompositeDataSupport;
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import javax.management.openmbean.CompositeType;
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import javax.management.openmbean.OpenDataException;
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import javax.management.openmbean.OpenType;
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import javax.management.openmbean.SimpleType;
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import javax.management.openmbean.TabularData;
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import javax.management.openmbean.TabularDataSupport;
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import javax.management.openmbean.TabularType;
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public class TabularDataOrderTest {
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private static String failure;
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private static final String COMPAT_PROP_NAME = "jmx.tabular.data.hash.map";
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private static final String[] intNames = {
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"unus", "duo", "tres", "quatuor", "quinque", "sex", "septem",
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"octo", "novem", "decim",
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};
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private static final Map<String, Integer> stringToValue =
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new LinkedHashMap<String, Integer>();
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static {
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for (int i = 0; i < intNames.length; i++)
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stringToValue.put(intNames[i], i + 1);
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}
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public static interface TestMXBean {
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public Map<String, Integer> getMap();
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}
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public static class TestImpl implements TestMXBean {
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public Map<String, Integer> getMap() {
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return stringToValue;
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}
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}
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private static final CompositeType ct;
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private static final TabularType tt;
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static {
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try {
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ct = new CompositeType(
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"a.b.c", "name and int",
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new String[] {"name", "int"},
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new String[] {"name of integer", "value of integer"},
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new OpenType<?>[] {SimpleType.STRING, SimpleType.INTEGER});
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tt = new TabularType(
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"d.e.f", "name and int indexed by name", ct,
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new String[] {"name"});
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} catch (OpenDataException e) {
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throw new AssertionError(e);
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}
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}
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private static TabularData makeTable() throws OpenDataException {
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TabularData td = new TabularDataSupport(tt);
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for (Map.Entry<String, Integer> entry : stringToValue.entrySet()) {
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CompositeData cd = new CompositeDataSupport(
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ct,
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new String[] {"name", "int"},
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new Object[] {entry.getKey(), entry.getValue()});
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td.put(cd);
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}
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return td;
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}
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public static void main(String[] args) throws Exception {
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System.out.println("Testing standard behaviour");
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TabularData td = makeTable();
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System.out.println(td);
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// Test that a default TabularData has the order keys were added in
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int last = 0;
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boolean ordered = true;
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for (Object x : td.values()) {
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CompositeData cd = (CompositeData) x;
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String name = (String) cd.get("name");
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int value = (Integer) cd.get("int");
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System.out.println(name + " = " + value);
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if (last + 1 != value)
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ordered = false;
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last = value;
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}
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if (!ordered)
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fail("Order not preserved");
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// Now test the undocumented property that causes HashMap to be used
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// instead of LinkedHashMap, in case serializing to a 1.3 client.
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// We serialize and deserialize in case the implementation handles
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// this at serialization time. Then we look at object fields; that's
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// not guaranteed to work but at worst it will fail spuriously and
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// we'll have to update the test.
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System.out.println("Testing compatible behaviour");
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System.setProperty(COMPAT_PROP_NAME, "true");
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td = makeTable();
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System.out.println(td);
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ByteArrayOutputStream bout = new ByteArrayOutputStream();
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ObjectOutputStream oout = new ObjectOutputStream(bout);
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oout.writeObject(td);
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oout.close();
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byte[] bytes = bout.toByteArray();
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ByteArrayInputStream bin = new ByteArrayInputStream(bytes);
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ObjectInputStream oin = new ObjectInputStream(bin);
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td = (TabularData) oin.readObject();
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boolean found = false;
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for (Field f : td.getClass().getDeclaredFields()) {
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if (Modifier.isStatic(f.getModifiers()))
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continue;
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f.setAccessible(true);
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Object x = f.get(td);
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if (x != null && x.getClass() == HashMap.class) {
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found = true;
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System.out.println(
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x.getClass().getName() + " TabularDataSupport." +
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f.getName() + " = " + x);
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break;
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}
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}
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if (!found) {
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fail("TabularDataSupport does not contain HashMap though " +
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COMPAT_PROP_NAME + "=true");
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}
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System.clearProperty(COMPAT_PROP_NAME);
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System.out.println("Testing MXBean behaviour");
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MBeanServer mbs = MBeanServerFactory.newMBeanServer();
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ObjectName name = new ObjectName("a:b=c");
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mbs.registerMBean(new TestImpl(), name);
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TestMXBean proxy = JMX.newMXBeanProxy(mbs, name, TestMXBean.class);
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Map<String, Integer> map = proxy.getMap();
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List<String> origNames = new ArrayList<String>(stringToValue.keySet());
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List<String> proxyNames = new ArrayList<String>(map.keySet());
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if (!origNames.equals(proxyNames))
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fail("Order mangled after passage through MXBean: " + proxyNames);
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if (failure == null)
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System.out.println("TEST PASSED");
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else
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throw new Exception("TEST FAILED: " + failure);
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}
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private static void fail(String why) {
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System.out.println("FAILED: " + why);
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failure = why;
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}
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}
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