How to use

getSize

method

in

org.apache.bookkeeper.mledger.util.RangeCache

@Override
public long getSize() {
  return entries.getSize();
}

@Override
public Pair<Integer, Long> evictEntries(long sizeToFree) {
  checkArgument(sizeToFree > 0);
  Pair<Integer, Long> evicted = entries.evictLeastAccessedEntries(sizeToFree);
  int evictedEntries = evicted.getLeft();
  long evictedSize = evicted.getRight();
  if (log.isDebugEnabled()) {
    log.debug(
        "[{}] Doing cache eviction of at least {} Mb -- Deleted {} entries - Total size deleted: {} Mb "
            + " -- Current Size: {} Mb",
        ml.getName(), sizeToFree / MB, evictedEntries, evictedSize / MB, entries.getSize() / MB);
  }
  manager.entriesRemoved(evictedSize);
  return evicted;
}

assertEquals(cache.getSize(), 100);
Pair<Integer, Long> res = cache.evictLeastAccessedEntries(1);
assertEquals((int) res.getLeft(), 1);
assertEquals((long) res.getRight(), 1);
assertEquals(cache.getSize(), 99);
assertEquals(cache.getSize(), 89);
assertEquals(cache.getSize(), 0);
assertEquals(cache.getSize(), 100);
assertEquals(cache.getSize(), 90);

@Test
void customWeighter() {
  RangeCache<Integer, RefString> cache = new RangeCache<>(value -> value.s.length());
  cache.put(0, new RefString("zero"));
  cache.put(1, new RefString("one"));
  assertEquals(cache.getSize(), 7);
  assertEquals(cache.getNumberOfEntries(), 2);
}

@Test
void doubleInsert() {
  RangeCache<Integer, RefString> cache = new RangeCache<>();
  RefString s0 = new RefString("zero");
  assertEquals(s0.refCnt(), 1);
  assertEquals(cache.put(0, s0), true);
  assertEquals(s0.refCnt(), 1);
  cache.put(1, new RefString("one"));
  assertEquals(cache.getSize(), 2);
  assertEquals(cache.getNumberOfEntries(), 2);
  RefString s = cache.get(1);
  assertEquals(s.s, "one");
  assertEquals(s.refCnt(), 2);
  RefString s1 = new RefString("uno");
  assertEquals(s1.refCnt(), 1);
  assertEquals(cache.put(1, s1), false);
  assertEquals(s1.refCnt(), 1);
  s1.release();
  // Should not have been overridden in cache
  assertEquals(cache.getSize(), 2);
  assertEquals(cache.getNumberOfEntries(), 2);
  assertEquals(cache.get(1).s, "one");
}

cache.put(1, new RefString("1"));
assertEquals(cache.getSize(), 2);
assertEquals(cache.getNumberOfEntries(), 2);
cache.put(11, new RefString("11"));
assertEquals(cache.getSize(), 5);
assertEquals(cache.getNumberOfEntries(), 5);
assertEquals(cache.getSize(), 3);
assertEquals(cache.getNumberOfEntries(), 3);
assertEquals(cache.getSize(), 3);
assertEquals(cache.getNumberOfEntries(), 3);
assertEquals(cache.getSize(), 0);
assertEquals(cache.getNumberOfEntries(), 0);
assertEquals(cache.getSize(), 0);
assertEquals(cache.getNumberOfEntries(), 0);

assertEquals(cache.getSize(), 8);
assertEquals(cache.get(0), null);
assertEquals(cache.get(1), null);
assertEquals(cache.getSize(), 0);
assertEquals(cache.get(0), null);
assertEquals(cache.get(1), null);

@Test
void getRange() {
  RangeCache<Integer, RefString> cache = new RangeCache<>();
  cache.put(0, new RefString("0"));
  cache.put(1, new RefString("1"));
  cache.put(3, new RefString("3"));
  cache.put(5, new RefString("5"));
  assertEquals(cache.getRange(1, 8),
      Lists.newArrayList(new RefString("1"), new RefString("3"), new RefString("5")));
  cache.put(8, new RefString("8"));
  assertEquals(cache.getRange(1, 8),
      Lists.newArrayList(new RefString("1"), new RefString("3"), new RefString("5"), new RefString("8")));
  cache.clear();
  assertEquals(cache.getSize(), 0);
  assertEquals(cache.getNumberOfEntries(), 0);
}

@Override
public long getSize() {
  return entries.getSize();
}

@Override
public long getSize() {
  return entries.getSize();
}

@Override
public Pair<Integer, Long> evictEntries(long sizeToFree) {
  checkArgument(sizeToFree > 0);
  Pair<Integer, Long> evicted = entries.evictLeastAccessedEntries(sizeToFree);
  int evictedEntries = evicted.getLeft();
  long evictedSize = evicted.getRight();
  if (log.isDebugEnabled()) {
    log.debug(
        "[{}] Doing cache eviction of at least {} Mb -- Deleted {} entries - Total size deleted: {} Mb "
            + " -- Current Size: {} Mb",
        ml.getName(), sizeToFree / MB, evictedEntries, evictedSize / MB, entries.getSize() / MB);
  }
  manager.entriesRemoved(evictedSize);
  return evicted;
}

@Override
public Pair<Integer, Long> evictEntries(long sizeToFree) {
  checkArgument(sizeToFree > 0);
  Pair<Integer, Long> evicted = entries.evictLeastAccessedEntries(sizeToFree);
  int evictedEntries = evicted.first;
  long evictedSize = evicted.second;
  if (log.isDebugEnabled()) {
    log.debug(
        "[{}] Doing cache eviction of at least {} Mb -- Deleted {} entries - Total size deleted: {} Mb "
            + " -- Current Size: {} Mb",
        ml.getName(), sizeToFree / MB, evictedEntries, evictedSize / MB, entries.getSize() / MB);
  }
  manager.entriesRemoved(evictedSize);
  return evicted;
}