| /** |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you under the Apache License, Version 2.0 (the |
| * "License"); you may not use this file except in compliance |
| * with the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, |
| * software distributed under the License is distributed on an |
| * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| * KIND, either express or implied. See the License for the |
| * specific language governing permissions and limitations |
| * under the License. |
| */ |
| package com.datatorrent.lib.db.cache; |
| |
| import java.io.IOException; |
| import java.util.HashMap; |
| import java.util.List; |
| import java.util.Map; |
| |
| import javax.annotation.Nullable; |
| |
| import org.junit.Assert; |
| import org.junit.Test; |
| |
| import com.google.common.base.Predicate; |
| import com.google.common.collect.Lists; |
| import com.google.common.collect.Maps; |
| |
| import com.datatorrent.api.Component; |
| |
| /** |
| * Tests for {@link CacheManager} |
| */ |
| public class CacheManagerTest |
| { |
| private static class DummyBackupStore implements CacheManager.Backup |
| { |
| |
| private static final Map<Object, Object> backupMap = Maps.newHashMap(); |
| |
| static { |
| backupMap.put(1, "one"); |
| backupMap.put(2, "two"); |
| backupMap.put(3, "three"); |
| backupMap.put(4, "four"); |
| backupMap.put(5, "five"); |
| backupMap.put(6, "six"); |
| backupMap.put(7, "seven"); |
| backupMap.put(8, "eight"); |
| backupMap.put(9, "nine"); |
| backupMap.put(10, "ten"); |
| } |
| |
| @Override |
| public Map<Object, Object> loadInitialData() |
| { |
| return Maps.filterKeys(backupMap, new Predicate<Object>() |
| { |
| @Override |
| public boolean apply(@Nullable Object key) |
| { |
| return key != null && (Integer)key <= 5; |
| } |
| }); |
| } |
| |
| @Override |
| public Object get(Object key) |
| { |
| return backupMap.get(key); |
| } |
| |
| @Override |
| public List<Object> getAll(final List<Object> keys) |
| { |
| List<Object> values = Lists.newArrayList(); |
| for (Object key : keys) { |
| values.add(backupMap.get(key)); |
| } |
| return values; |
| } |
| |
| @Override |
| public void put(Object key, Object value) |
| { |
| backupMap.put(key, value); |
| } |
| |
| @Override |
| public void putAll(Map<Object, Object> m) |
| { |
| throw new UnsupportedOperationException("not supported"); |
| } |
| |
| @Override |
| public void remove(Object key) |
| { |
| throw new UnsupportedOperationException("not supported"); |
| } |
| |
| @Override |
| public void connect() throws IOException |
| { |
| } |
| |
| @Override |
| public void disconnect() throws IOException |
| { |
| } |
| |
| @Override |
| public boolean isConnected() |
| { |
| return true; |
| } |
| } |
| |
| private static class DummyComponentBackupStore extends DummyBackupStore implements Component<CacheManager.CacheContext> |
| { |
| CacheManager.CacheContext cacheContext; |
| |
| @Override |
| public Map<Object, Object> loadInitialData() |
| { |
| Map<Object, Object> result = new HashMap(); |
| int linesToCache = cacheContext.getValue(CacheManager.CacheContext.NUM_INIT_CACHED_LINES_ATTR); |
| int lineCount = 0; |
| |
| for (Map.Entry entry : DummyBackupStore.backupMap.entrySet()) { |
| if (linesToCache > 0 && lineCount >= linesToCache) { |
| break; |
| } |
| |
| result.put(entry.getKey(), DummyBackupStore.backupMap.get(entry.getKey())); |
| lineCount++; |
| } |
| return result; |
| } |
| |
| @Override |
| public void setup(CacheManager.CacheContext context) |
| { |
| this.cacheContext = context; |
| } |
| |
| @Override |
| public void teardown() |
| { |
| } |
| } |
| |
| @Test |
| public void testCacheManager() throws IOException |
| { |
| CacheManager manager = new CacheManager(); |
| manager.setBackup(new DummyBackupStore()); |
| manager.initialize(); |
| |
| Assert.assertEquals("manager initialization- value", "one", manager.primary.get(1)); |
| Assert.assertEquals("manager initializaton- total", 5, manager.primary.getKeys().size()); |
| |
| Assert.assertEquals("backup hit", "six", manager.get(6)); |
| Assert.assertEquals("primary updated- total", 6, manager.primary.getKeys().size()); |
| } |
| |
| @Test |
| public void testCacheContextAttrInCacheManager() throws IOException, InterruptedException |
| { |
| CacheStore primaryCache = new CacheStore(); |
| primaryCache.setEntryExpiryStrategy(CacheStore.ExpiryType.EXPIRE_AFTER_WRITE); |
| primaryCache.setEntryExpiryDurationInMillis(10); |
| primaryCache.setCacheCleanupInMillis(20); |
| CacheManager manager = new CacheManager(); |
| manager.setBackup(new DummyComponentBackupStore()); |
| manager.setNumInitCachedLines(3); |
| manager.setReadOnlyData(true); |
| manager.setPrimary(primaryCache); |
| manager.initialize(); |
| |
| Assert.assertEquals("initial number of cached lines", 3, manager.primary.getKeys().size()); |
| Thread.sleep(30); |
| Assert.assertEquals("not evicted number of cached lines", 3, manager.primary.getKeys().size()); |
| } |
| } |