@Test
public void open_ignores_rollback() {
File f = TT.tempDbFile();
WriteAheadLog wal = new WriteAheadLog(f.getPath());
wal.walPutLong(1L, 11L);
wal.commit();
wal.walPutLong(2L, 33L);
wal.rollback();
wal.walPutLong(3L, 33L);
wal.commit();
wal.seal();
wal.close();
wal = new WriteAheadLog(f.getPath());
wal.open(
new WALSequence(
new Object[] {WALSequence.beforeReplayStart},
new Object[] {WALSequence.writeLong, 1L, 11L},
new Object[] {WALSequence.commit},
// 2L is ignored, rollback section is skipped on hard replay
new Object[] {WALSequence.writeLong, 3L, 33L},
new Object[] {WALSequence.commit}));
wal.destroyWalFiles();
wal.close();
f.delete();
}
@Test
public void skip_rollback_last_rollback() {
WriteAheadLog wal = new WriteAheadLog(null);
wal.walPutLong(1L, 11L);
wal.commit();
long o1 = wal.fileOffset;
wal.walPutLong(2L, 33L);
wal.commit();
long o2 = wal.fileOffset;
wal.walPutLong(3L, 33L);
wal.rollback();
wal.seal();
assertEquals(o1, wal.skipRollbacks(o1));
assertEquals(0, wal.skipRollbacks(o2));
}
@Test
public void commitChecksum() {
WriteAheadLog wal = new WriteAheadLog(null);
wal.open(WriteAheadLog.NOREPLAY);
wal.startNextFile();
wal.walPutLong(111L, 1000);
wal.commit();
long offset1 = wal.fileOffset - 5;
int checksum1 = DataIO.longHash(wal.curVol.hash(16, offset1 - 16, 111L));
assertEquals(checksum1, wal.curVol.getInt(offset1 + 1));
wal.walPutLong(111L, 1000);
wal.commit();
long offset2 = wal.fileOffset - 5;
int checksum2 =
checksum1 + DataIO.longHash(wal.curVol.hash(offset1 + 5, offset2 - offset1 - 5, 111L));
assertEquals(checksum2, wal.curVol.getInt(offset2 + 1));
}
@Test
public void cut_broken_end_rollback() {
String f = TT.tempDbFile().getPath();
WriteAheadLog wal = new WriteAheadLog(f);
wal.walPutLong(1L, 11L);
wal.commit();
wal.walPutLong(2L, 22L);
wal.commit();
wal.walPutLong(3L, 33L);
wal.rollback();
wal.walPutLong(4L, 44L);
wal.curVol.sync();
wal.close();
wal = new WriteAheadLog(f);
wal.open(
new WALSequence(
new Object[] {WALSequence.beforeReplayStart},
new Object[] {WALSequence.writeLong, 1L, 11L},
new Object[] {WALSequence.commit},
new Object[] {WALSequence.writeLong, 2L, 22L},
new Object[] {WALSequence.commit}));
}
@Test
public void lazy_file_create() {
File f = TT.tempDbFile();
f.delete();
File f2 = new File(f.getPath() + ".wal.0");
WriteAheadLog wal = new WriteAheadLog(f.getPath());
wal.open(WriteAheadLog.NOREPLAY);
assertTrue(!f2.exists());
wal.walPutLong(111L, 111L);
assertTrue(f2.exists());
wal.close();
f2.delete();
}
@Test
public void commit() {
WriteAheadLog wal = new WriteAheadLog(null);
wal.open(WriteAheadLog.NOREPLAY);
wal.walPutLong(111L, 1111L);
wal.commit();
wal.seal();
wal.replayWAL(
new WALSequence(
new Object[] {WALSequence.beforeReplayStart},
new Object[] {WALSequence.writeLong, 111L, 1111L},
new Object[] {WALSequence.commit}));
}
@Test
public void rollback() {
WriteAheadLog wal = new WriteAheadLog(null);
wal.open(WriteAheadLog.NOREPLAY);
wal.startNextFile();
wal.walPutLong(111L, 1000);
wal.rollback();
wal.seal();
wal.replayWAL(
new WALSequence(
new Object[] {WALSequence.beforeReplayStart},
new Object[] {WALSequence.writeLong, 111L, 1000L},
new Object[] {WALSequence.rollback}));
}
@Test
public void test() {
File f = TT.tempDbFile();
WriteAheadLog wal = new WriteAheadLog(f.getPath());
for (int i = 0; i < commitNum; i++) {
for (int j = 0; j < 6; j++) {
wal.walPutLong(111L, i);
}
wal.commit();
}
int cutPoint = new Random(cutPointSeed).nextInt((int) wal.curVol.length());
wal.curVol.sync();
wal.curVol.clear(cutPoint, wal.curVol.length());
File f2 = wal.curVol.getFile();
wal.close();
wal = new WriteAheadLog(f.getPath());
final AtomicLong i = new AtomicLong();
final AtomicLong c = new AtomicLong();
wal.open(
new WriteAheadLog.WALReplay() {
@Override
public void beforeReplayStart() {}
@Override
public void afterReplayFinished() {}
@Override
public void writeLong(long offset, long value) {
assertEquals(111L, offset);
assertEquals(i.get(), value);
assertTrue(c.getAndIncrement() < 6);
}
@Override
public void writeRecord(long recid, long walId, Volume vol, long volOffset, int length) {
fail();
}
@Override
public void writeByteArray(
long offset, long walId, Volume vol, long volOffset, int length) {
fail();
}
@Override
public void commit() {
assertEquals(6, c.get());
c.set(0);
i.incrementAndGet();
}
@Override
public void rollback() {
fail();
}
@Override
public void writeTombstone(long recid) {
fail();
}
@Override
public void writePreallocate(long recid) {
fail();
}
});
assertEquals(0, c.get());
f.delete();
f2.delete();
}