示例#1
0
 /** Tests whether the getIterator method works as our expectation. */
 @Test
 public void testIterator() throws Exception {
   Log log = getLog();
   // Appends  100 transactions.
   appendTxns(log, new Zxid(0, 0), 100);
   Random rand = new Random();
   Zxid begZxid = new Zxid(0, rand.nextInt(100));
   Log.LogIterator iter = log.getIterator(begZxid);
   // Make sure it starts from the correct zxid.
   Assert.assertEquals(begZxid, iter.next().getZxid());
   // Starts from negative zxid.
   iter = log.getIterator(new Zxid(0, -1));
   Assert.assertEquals(new Zxid(0, 0), iter.next().getZxid());
 }
示例#2
0
 /** Gets transaction id of all the transactions after zxid in log. */
 List<Zxid> getZxids(Log log, Zxid startZxid) throws IOException {
   List<Zxid> zxids = new ArrayList<Zxid>();
   try (Log.LogIterator iter = log.getIterator(startZxid)) {
     while (iter.hasNext()) {
       Zxid zxid = iter.next().getZxid();
       zxids.add(zxid);
     }
   }
   return zxids;
 }
示例#3
0
 @Test(expected = RuntimeException.class)
 public void testCorruptTxn() throws Exception {
   if (logClass == (Class<?>) SimpleLog.class) {
     Log log = getLog();
     appendTxns(log, new Zxid(0, 0), 1);
     // Corrupts Transaction.
     corruptFile(20);
     // Iterating the log will trigger the checksum error.
     log.getIterator(log.getLatestZxid());
     log.close();
   } else {
     throw new RuntimeException("Simulated exception for RollingLog.");
   }
 }