/*
* Copyright (c) 1997, 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.
*/
/* @test
@bug 4094889
@summary rmid can have a corrupted log
*/
/* Fault: ReliableLog used RandomAccessFile.skipBytes() to seek past the end
* of a file. Unfortunately, skipBytes() doesn't do that, so the file was
* being misaligned.
*
* Reproduced by writing an odd number of bytes into an update, and then
* reloading.
*/
import java.io.File;
import java.io.PrintStream;
import java.io.Serializable;
import sun.rmi.log.LogHandler;
import sun.rmi.log.ReliableLog;
//import javasoft.sqe.harness.Status;
//import javasoft.sqe.harness.Test;
public class LogAlignmentTest
extends LogHandler
implements Serializable //, Test
{
static public void main (String[] argv)
{
LogAlignmentTest test = new LogAlignmentTest();
//Status status = test.run (argv, System.err, System.out);
//status.exit();
test.run (argv, System.err, System.out);
}
//public Status run (String argv[], PrintStream log, PrintStream out)
public void run (String argv[], PrintStream log, PrintStream out)
{
try {
regtest(130, "./logalign_tmp", log, out);
regtest(131, "./logalign_tmp", log, out);
} catch (Exception e) {
e.printStackTrace (log);
//return (Status.failed
throw (new RuntimeException
("Exception in regression test for bugid 4094889"));
}
//return (Status.passed ("OKAY"));
}
static private void regtest(int updatesz, String dir, PrintStream lg, PrintStream out)
throws Exception
{
try {
LogAlignmentTest handler = new LogAlignmentTest();
ReliableLog log = new ReliableLog (dir, handler, false);
// Write a preamble update
String c = "[";
handler.basicUpdate (c);
log.update (c, true);
// Generate the requested size update (single chars)
char[] up = new char[updatesz];
int i;
for (i = 0; i < updatesz; i++) {
up[i] = (char)(65 + (i % 26));
}
c = new String (up);
handler.basicUpdate (c);
log.update (c, true);
// Write it again, so we can misalign
handler.basicUpdate (c);
log.update (c, true);
// Write the suffix
c = "]";
handler.basicUpdate (c);
log.update (c, true);
// Read it back using a new context.
LogAlignmentTest handler2 = new LogAlignmentTest();
ReliableLog carbon = new ReliableLog (dir, handler2, false);
Object thingy = carbon.recover();
// The report bit
String orig = handler.contents;
String news = ((LogAlignmentTest)thingy).contents;
lg.println ("Original as saved: " + orig);
lg.println ("As restored : " + news);
if (orig.compareTo (news) != 0) {
throw new RuntimeException ("Restored string was different from saved string");
} else {
lg.println ("Matched OK. Test element passed.");
}
} finally {
// Trash the log directory, so a new snap will be taken in the next test
try {
File vs = new File (dir, "Version_Number");
vs.delete();
} catch (Exception e) {
}
try {
File vs = new File (dir, "New_Version_Number");
vs.delete();
} catch (Exception e) {
}
}
}
private String contents;
public LogAlignmentTest()
{
super();
this.contents = "?";
}
// implements LogHandler.initialSnapshot()
public Object initialSnapshot()
throws Exception
{
this.contents = "";
return (this);
}
// implements LogHandler.applyUpdate()
public Object applyUpdate (Object update, Object state)
throws Exception
{
// basicUpdate appends the string
((LogAlignmentTest)state).basicUpdate ((String)update);
return (state);
}
// an "update" is a short string to append to this.contents (must ignore state)
public void basicUpdate (String extra)
{
this.contents = this.contents + extra;
}
}