/*
* See the file LICENSE for redistribution information.
*
* Copyright (c) 2002, 2011 Oracle and/or its affiliates. All rights reserved.
*
*/
package com.sleepycat.je.txn;
import java.nio.ByteBuffer;
import com.sleepycat.je.log.LogUtils;
import com.sleepycat.je.log.Loggable;
import com.sleepycat.je.utilint.DbLsn;
import com.sleepycat.je.utilint.Timestamp;
/**
* This class indicates the end of a partial rollback at syncup. This is a
* non-replicated entry. Although this is a replication class, it resides in
* the utilint package because it is referenced in LogEntryType.java and is
* used in a general way at recovery.
*/
public class RollbackEnd implements Loggable {
private long matchpointLSN;
private long rollbackStartLSN;
/* For debugging in the field */
private Timestamp time;
public RollbackEnd(long matchpointLSN, long rollbackStartLSN) {
this.matchpointLSN = matchpointLSN;
this.rollbackStartLSN = rollbackStartLSN;
time = new Timestamp(System.currentTimeMillis());
}
/**
* For constructing from the log.
*/
public RollbackEnd() {
}
public long getMatchpoint() {
return matchpointLSN;
}
public long getRollbackStart() {
return rollbackStartLSN;
}
/**
* @see Loggable#getLogSize
*/
public int getLogSize() {
return LogUtils.getPackedLongLogSize(matchpointLSN) +
LogUtils.getPackedLongLogSize(rollbackStartLSN) +
LogUtils.getTimestampLogSize(time);
}
/**
* @see Loggable#writeToLog
*/
public void writeToLog(ByteBuffer buffer) {
LogUtils.writePackedLong(buffer, matchpointLSN);
LogUtils.writePackedLong(buffer, rollbackStartLSN);
LogUtils.writeTimestamp(buffer, time);
}
/**
* @see Loggable#readFromLog
*/
@SuppressWarnings("unused")
public void readFromLog(ByteBuffer buffer, int entryVersion) {
matchpointLSN = LogUtils.readPackedLong(buffer);
rollbackStartLSN = LogUtils.readPackedLong(buffer);
/* the timestamp is packed -- double negative, unpacked == false */
time = LogUtils.readTimestamp(buffer, false /* unpacked. */);
}
/**
* @see Loggable#dumpLog
*/
@SuppressWarnings("unused")
public void dumpLog(StringBuilder sb, boolean verbose) {
sb.append(" matchpointLSN=");
sb.append(DbLsn.getNoFormatString(matchpointLSN));
sb.append(" rollbackStartLSN=");
sb.append(DbLsn.getNoFormatString(rollbackStartLSN));
sb.append(" time=").append(time);
}
/**
* @see Loggable#getTransactionId
*/
public long getTransactionId() {
return 0;
}
/**
* @see Loggable#logicalEquals
*/
public boolean logicalEquals(Loggable other) {
if (!(other instanceof RollbackEnd)) {
return false;
}
RollbackEnd otherRE = (RollbackEnd) other;
return (rollbackStartLSN == otherRE.rollbackStartLSN) &&
(matchpointLSN == otherRE.matchpointLSN) &&
(time.equals(otherRE.time));
}
@Override
public String toString() {
StringBuilder sb = new StringBuilder();
dumpLog(sb, true);
return sb.toString();
}
}