Examples with AutoSavingCache org.apache.cassandra.cache.AutoSavingCache used on opensource projects

Example 1 with AutoSavingCache

use of org.apache.cassandra.cache.AutoSavingCache in project cassandra by apache.

the class KeyCacheTest method testKeyCacheLoadCacheLoadTimeExceedingLimit.

@SuppressWarnings({ "unchecked", "rawtypes" })
@Test
public void testKeyCacheLoadCacheLoadTimeExceedingLimit() throws Exception {
    DatabaseDescriptor.setCacheLoadTimeout(2);
    int delayMillis = 1000;
    int numberOfRows = 100;
    String cf = COLUMN_FAMILY9;
    createAndInvalidateCache(Collections.singletonList(Pair.create(KEYSPACE1, cf)), numberOfRows);
    // Testing cache load. Here using custom built AutoSavingCache instance as simulating delay is not possible with
    // 'CacheService.instance.keyCache'. 'AutoSavingCache.loadSaved()' is returning no.of entries loaded so we don't need
    // to instantiate ICache.class.
    CacheService.KeyCacheSerializer keyCacheSerializer = new CacheService.KeyCacheSerializer();
    CacheService.KeyCacheSerializer keyCacheSerializerSpy = Mockito.spy(keyCacheSerializer);
    AutoSavingCache autoSavingCache = new AutoSavingCache(mock(ICache.class), CacheService.CacheType.KEY_CACHE, keyCacheSerializerSpy);
    doAnswer(new AnswersWithDelay(delayMillis, answer -> keyCacheSerializer.deserialize(answer.getArgument(0), answer.getArgument(1)))).when(keyCacheSerializerSpy).deserialize(any(DataInputPlus.class), any(ColumnFamilyStore.class));
    long maxExpectedKeyCache = Math.min(numberOfRows, 1 + TimeUnit.SECONDS.toMillis(DatabaseDescriptor.getCacheLoadTimeout()) / delayMillis);
    long keysLoaded = autoSavingCache.loadSaved();
    assertThat(keysLoaded, Matchers.lessThanOrEqualTo(maxExpectedKeyCache));
    assertNotEquals(0, keysLoaded);
    Mockito.verify(keyCacheSerializerSpy, Mockito.times(1)).cleanupAfterDeserialize();
}