1 /* 2 * Copyright (c) 2001, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. 8 * 9 * This code is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 * version 2 for more details (a copy is included in the LICENSE file that 13 * accompanied this code). 14 * 15 * You should have received a copy of the GNU General Public License version 16 * 2 along with this work; if not, write to the Free Software Foundation, 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18 * 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 */ 23 24 /* @test 25 * @bug 4319866 26 * @summary Verify that ReliableLog.snapshotSize() returns correct snapshot 27 * file size even if LogHandler doesn't flush. 28 * 29 * @run main SnapshotSize 30 */ 31 32 import java.io.ByteArrayOutputStream; 33 import java.io.OutputStream; 34 import java.io.ObjectOutputStream; 35 import java.io.IOException; 36 import sun.rmi.log.LogHandler; 37 import sun.rmi.log.ReliableLog; 38 39 public class SnapshotSize extends LogHandler { 40 41 int lastSnapshotSize = -1; 42 43 public static void main(String[] args) throws Exception { 44 SnapshotSize handler = new SnapshotSize(); 45 ReliableLog log = new ReliableLog(".", handler); 46 if (log.snapshotSize() != handler.lastSnapshotSize) { 47 throw new Error(); 48 } 49 50 String[] snapshots = { "some", "sample", "objects", "to", "snapshot" }; 51 for (int i = 0; i < snapshots.length; i++) { 52 log.snapshot(snapshots[i]); 53 if (log.snapshotSize() != handler.lastSnapshotSize) { 54 throw new Error(); 55 } 56 } 57 } 58 59 public Object initialSnapshot() { 60 return "initial snapshot"; 61 } 62 63 public void snapshot(OutputStream out, Object value) throws IOException { 64 ByteArrayOutputStream bout = new ByteArrayOutputStream(); 65 ObjectOutputStream oout = new ObjectOutputStream(bout); 66 oout.writeObject(value); 67 oout.close(); 68 69 byte[] buf = bout.toByteArray(); 70 out.write(buf); // leave unflushed 71 lastSnapshotSize = buf.length; 72 } 73 74 public Object applyUpdate(Object update, Object state) { 75 return state; 76 } 77 }