/*
* Copyright 2003-2008 Sun Microsystems, Inc. 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
* CA 95054 USA or visit www.sun.com if you need additional information or
* have any questions.
*/
/*
* @test
* @summary Test that SnmpTimeTicks wraps around when it is passed a long
* value
* @bug 4955105
* @build TimeTicksWrapping
* @run main TimeTicksWrapping
*/
import java.lang.reflect.Constructor;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
public class TimeTicksWrapping {
// We use an SnmpTimeticksBuilder in order to adapt this test case to a
// configuration where the SNMP packages are not present in rt.jar.
//
public static final class SnmpTimeticksBuilder {
public static final long MAX_VALUE = 0x0ffffffffL;
public static final String SNMP_TIME_TICKS_CLASS_NAME =
"com.sun.jmx.snmp.SnmpTimeticks";
private static final Class<?> SNMP_TIME_TICKS_CLASS;
private static final Constructor<?> SNMP_long_CTOR;
private static final Constructor<?> SNMP_LONG_CTOR;
private static final Method SNMP_LONG_VALUE;
static {
Class<?> snmpTimeTicksClass;
try {
snmpTimeTicksClass =
Class.forName(SNMP_TIME_TICKS_CLASS_NAME, true, null);
} catch (ClassNotFoundException x) {
snmpTimeTicksClass = null;
System.err.println("WARNING: can't load "+
SNMP_TIME_TICKS_CLASS_NAME);
}
SNMP_TIME_TICKS_CLASS = snmpTimeTicksClass;
if (SNMP_TIME_TICKS_CLASS != null) {
try {
SNMP_long_CTOR =
SNMP_TIME_TICKS_CLASS.getConstructor(long.class);
} catch (Exception x) {
throw new ExceptionInInitializerError(x);
}
} else {
SNMP_long_CTOR = null;
}
if (SNMP_TIME_TICKS_CLASS != null) {
try {
SNMP_LONG_CTOR =
SNMP_TIME_TICKS_CLASS.getConstructor(Long.class);
} catch (Exception x) {
throw new ExceptionInInitializerError(x);
}
} else {
SNMP_LONG_CTOR = null;
}
if (SNMP_TIME_TICKS_CLASS != null) {
try {
SNMP_LONG_VALUE =
SNMP_TIME_TICKS_CLASS.getMethod("longValue");
} catch (Exception x) {
throw new ExceptionInInitializerError(x);
}
} else {
SNMP_LONG_VALUE = null;
}
}
private final Object timeticks;
public SnmpTimeticksBuilder(long ticks) throws Exception {
timeticks = newSnmpTimeticks(ticks);
}
public SnmpTimeticksBuilder(Long ticks) throws Exception {
timeticks = newSnmpTimeticks(ticks);
}
public long longValue() throws Exception {
return longValue(timeticks);
}
public static boolean isSnmpPresent() {
System.out.println(TimeTicksWrapping.class.getName()+
": Testing for SNMP Packages...");
return SNMP_TIME_TICKS_CLASS != null;
}
private static Object newSnmpTimeticks(long time)
throws Exception {
try {
return SNMP_long_CTOR.newInstance(time);
} catch (InvocationTargetException x) {
final Throwable cause = x.getCause();
if (cause instanceof Exception) throw (Exception) cause;
if (cause instanceof Error) throw (Error) cause;
throw x;
}
}
private static Object newSnmpTimeticks(Long time)
throws Exception {
try {
return SNMP_LONG_CTOR.newInstance(time);
} catch (InvocationTargetException x) {
final Throwable cause = x.getCause();
if (cause instanceof Exception) throw (Exception) cause;
if (cause instanceof Error) throw (Error) cause;
throw x;
}
}
private static long longValue(Object o)
throws Exception {
try {
return ((Long)SNMP_LONG_VALUE.invoke(o)).longValue();
} catch (InvocationTargetException x) {
final Throwable cause = x.getCause();
if (cause instanceof Exception) throw (Exception) cause;
if (cause instanceof Error) throw (Error) cause;
throw x;
}
}
}
public static final long[] oks = {
0L, 1L, (long)Integer.MAX_VALUE, (long)Integer.MAX_VALUE*2,
(long)Integer.MAX_VALUE*2+1L, (long)Integer.MAX_VALUE*2+2L,
(long)Integer.MAX_VALUE*3,
SnmpTimeticksBuilder.MAX_VALUE, SnmpTimeticksBuilder.MAX_VALUE+1L,
SnmpTimeticksBuilder.MAX_VALUE*3-1L, Long.MAX_VALUE
};
public static final long[] kos = {
-1L, (long)Integer.MIN_VALUE, (long)Integer.MIN_VALUE*2,
(long)Integer.MIN_VALUE*2-1L, (long)Integer.MIN_VALUE*3,
-SnmpTimeticksBuilder.MAX_VALUE, -(SnmpTimeticksBuilder.MAX_VALUE+1L),
-(SnmpTimeticksBuilder.MAX_VALUE*3-1L), Long.MIN_VALUE
};
public static void main(String args[]) {
if (!SnmpTimeticksBuilder.isSnmpPresent()) {
System.err.println("WARNING: "+
SnmpTimeticksBuilder.SNMP_TIME_TICKS_CLASS_NAME+
" not present.");
System.err.println(TimeTicksWrapping.class.getName()+
": test skipped.");
return;
}
try {
SnmpTimeticksBuilder t = null;
for (int i=0;i<oks.length;i++) {
final long t1,t2,t3;
t1 = (new SnmpTimeticksBuilder(oks[i])).longValue();
t2 = (new SnmpTimeticksBuilder(new Long(oks[i]))).longValue();
t3 = oks[i]%0x0100000000L;
if (t1 != t3)
throw new Exception("Value should have wrapped: " +
oks[i] + " expected: " + t3);
if (t2 != t3)
throw new Exception("Value should have wrapped: " +
"Long("+oks[i]+") expected: " + t3);
if (t1 > SnmpTimeticksBuilder.MAX_VALUE)
throw new Exception("Value should have wrapped " +
"for " + oks[i] + ": " +
t1 + " exceeds max: " +
SnmpTimeticksBuilder.MAX_VALUE);
if (t2 > SnmpTimeticksBuilder.MAX_VALUE)
throw new Exception("Value should have wrapped " +
"for " + oks[i] + ": " +
t2 + " exceeds max: " +
SnmpTimeticksBuilder.MAX_VALUE);
if (t1 < 0)
throw new Exception("Value should have wrapped: " +
"for " + oks[i] + ": " +
t1 + " is negative");
if (t2 < 0)
throw new Exception("Value should have wrapped: " +
"for " + oks[i] + ": " +
t2 + " is negative");
System.out.println("TimeTicks[" + oks[i] +
"] rightfully accepted: " + t3);
}
for (int i=0;i<kos.length;i++) {
try {
t = new SnmpTimeticksBuilder(kos[i]);
throw new Exception("Value should have been rejected: " +
kos[i]);
} catch (IllegalArgumentException x) {
// OK!
}
try {
t = new SnmpTimeticksBuilder(new Long(kos[i]));
throw new Exception("Value should have been rejected: " +
"Long("+kos[i]+")");
} catch (IllegalArgumentException x) {
// OK!
}
System.out.println("TimeTicks[" + kos[i] +
"] rightfully rejected.");
}
} catch(Exception x) {
x.printStackTrace();
System.exit(1);
}
}
}