/*
* Copyright (c) 2008-2013, Hazelcast, Inc. All Rights Reserved.
*
* Licensed 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.hazelcast.map.mapstore;
import com.hazelcast.config.Config;
import com.hazelcast.config.MapConfig;
import com.hazelcast.config.MapStoreConfig;
import com.hazelcast.core.HazelcastInstance;
import com.hazelcast.core.MapStore;
import com.hazelcast.test.HazelcastSerialClassRunner;
import com.hazelcast.test.HazelcastTestSupport;
import com.hazelcast.test.annotation.QuickTest;
import org.junit.Test;
import org.junit.experimental.categories.Category;
import org.junit.runner.RunWith;
import java.util.Collection;
import java.util.HashMap;
import java.util.Map;
import java.util.Set;
import java.util.TreeMap;
import java.util.concurrent.ConcurrentHashMap;
import static org.junit.Assert.assertFalse;
/**
* @author sozal 7/17/14
*/
@RunWith(HazelcastSerialClassRunner.class)
@Category(QuickTest.class)
public class MapClassLoaderTest extends HazelcastTestSupport {
private static final int WRITE_DELAY_SECONDS = 5;
private static final int MS_LOAD_DELAY = 5000;
private static final int MS_PER_LOAD = 50;
private static final int PRE_LOAD_SIZE = 200;
private static final String MAP_NAME = MapClassLoaderTest.class.getSimpleName();
// https://github.com/hazelcast/hazelcast/issues/2721
@Test
public void testIssue2721() throws InterruptedException {
final Config config = new Config();
// get map config
final MapConfig mapConfig = config.getMapConfig(MAP_NAME);
// create shared map store implementation
final InMemoryMapStore store = new InMemoryMapStore();
store.preload(PRE_LOAD_SIZE);
// create map store config
final MapStoreConfig mapStoreConfig = new MapStoreConfig();
mapStoreConfig.setEnabled(true);
mapStoreConfig.setInitialLoadMode(MapStoreConfig.InitialLoadMode.EAGER);
mapStoreConfig.setWriteDelaySeconds(WRITE_DELAY_SECONDS);
mapStoreConfig.setClassName(null);
mapStoreConfig.setImplementation(store);
mapConfig.setMapStoreConfig(mapStoreConfig);
final HazelcastInstance instance = createHazelcastInstance(config);
// Get map so map store is triggered
instance.getMap(MAP_NAME);
boolean anEmptyCtxClassLoaderExist = false;
// test if all load threads had a context class loader set
for (boolean hasCtxClassLoader : store.getContextClassLoaders().values()) {
if (!hasCtxClassLoader) {
anEmptyCtxClassLoaderExist = true;
break;
}
}
assertFalse(anEmptyCtxClassLoaderExist);
}
private class InMemoryMapStore implements MapStore<String, String> {
private final ConcurrentHashMap<String, String> store =
new ConcurrentHashMap<String, String>();
private final ConcurrentHashMap<String, Boolean> contextClassLoaders =
new ConcurrentHashMap<String, Boolean>();
public TreeMap<String, Boolean> getContextClassLoaders() {
return new TreeMap<String, Boolean>(contextClassLoaders);
}
public void preload(int size) {
for (int i = 0; i < size; i++) {
store.put("k" + i, "v" + i);
}
}
private void saveInfoAboutCurrentLoaderThread() {
Thread thread = Thread.currentThread();
ClassLoader contextClassLoader = thread.getContextClassLoader();
contextClassLoaders.putIfAbsent(thread.getName(), contextClassLoader != null);
}
@Override
public String load(String key) {
sleepMillis(MS_PER_LOAD);
saveInfoAboutCurrentLoaderThread();
return store.get(key);
}
@Override
public Map<String, String> loadAll(Collection<String> keys) {
saveInfoAboutCurrentLoaderThread();
Map<String, String> result = new HashMap<String, String>();
for (String key : keys) {
sleepMillis(MS_PER_LOAD);
String value = store.get(key);
if (value != null) {
result.put(key, value);
}
}
return result;
}
@Override
public Set<String> loadAllKeys() {
// sleep to highlight asynchronous behavior
sleepMillis(MS_LOAD_DELAY);
return store.keySet();
}
@Override
public void store(String key, String value) {
store.put(key, value);
}
@Override
public void storeAll(Map<String, String> map) {
store.putAll(map);
}
@Override
public void delete(String key) {
store.remove(key);
}
@Override
public void deleteAll(Collection<String> keys) {
for (String key : keys) {
store.remove(key);
}
}
}
}