| /* |
| * |
| * 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 org.apache.cassandra.cache; |
| |
| |
| import java.nio.ByteBuffer; |
| import java.util.ArrayList; |
| import java.util.List; |
| |
| import org.junit.BeforeClass; |
| import org.junit.Test; |
| |
| import org.apache.cassandra.SchemaLoader; |
| import org.apache.cassandra.config.KSMetaData; |
| import org.apache.cassandra.db.ArrayBackedSortedColumns; |
| import org.apache.cassandra.db.ColumnFamily; |
| import org.apache.cassandra.exceptions.ConfigurationException; |
| import org.apache.cassandra.locator.SimpleStrategy; |
| import org.apache.cassandra.utils.Pair; |
| |
| import com.googlecode.concurrentlinkedhashmap.Weighers; |
| |
| import static org.apache.cassandra.Util.column; |
| import static org.junit.Assert.*; |
| |
| public class CacheProviderTest |
| { |
| MeasureableString key1 = new MeasureableString("key1"); |
| MeasureableString key2 = new MeasureableString("key2"); |
| MeasureableString key3 = new MeasureableString("key3"); |
| MeasureableString key4 = new MeasureableString("key4"); |
| MeasureableString key5 = new MeasureableString("key5"); |
| private static final long CAPACITY = 4; |
| private static final String KEYSPACE1 = "CacheProviderTest1"; |
| private static final String CF_STANDARD1 = "Standard1"; |
| |
| @BeforeClass |
| public static void defineSchema() throws ConfigurationException |
| { |
| SchemaLoader.prepareServer(); |
| SchemaLoader.createKeyspace(KEYSPACE1, |
| SimpleStrategy.class, |
| KSMetaData.optsWithRF(1), |
| SchemaLoader.standardCFMD(KEYSPACE1, CF_STANDARD1)); |
| } |
| |
| private void simpleCase(ColumnFamily cf, ICache<MeasureableString, IRowCacheEntry> cache) |
| { |
| cache.put(key1, cf); |
| assertNotNull(cache.get(key1)); |
| |
| assertDigests(cache.get(key1), cf); |
| cache.put(key2, cf); |
| cache.put(key3, cf); |
| cache.put(key4, cf); |
| cache.put(key5, cf); |
| |
| assertEquals(CAPACITY, cache.size()); |
| } |
| |
| private void assertDigests(IRowCacheEntry one, ColumnFamily two) |
| { |
| // CF does not implement .equals |
| assertTrue(one instanceof ColumnFamily); |
| assertEquals(ColumnFamily.digest((ColumnFamily)one), ColumnFamily.digest(two)); |
| } |
| |
| // TODO this isn't terribly useful |
| private void concurrentCase(final ColumnFamily cf, final ICache<MeasureableString, IRowCacheEntry> cache) throws InterruptedException |
| { |
| Runnable runable = new Runnable() |
| { |
| public void run() |
| { |
| for (int j = 0; j < 10; j++) |
| { |
| cache.put(key1, cf); |
| cache.put(key2, cf); |
| cache.put(key3, cf); |
| cache.put(key4, cf); |
| cache.put(key5, cf); |
| } |
| } |
| }; |
| |
| List<Thread> threads = new ArrayList<Thread>(100); |
| for (int i = 0; i < 100; i++) |
| { |
| Thread thread = new Thread(runable); |
| threads.add(thread); |
| thread.start(); |
| } |
| for (Thread thread : threads) |
| thread.join(); |
| } |
| |
| private ColumnFamily createCF() |
| { |
| ColumnFamily cf = ArrayBackedSortedColumns.factory.create(KEYSPACE1, CF_STANDARD1); |
| cf.addColumn(column("vijay", "great", 1)); |
| cf.addColumn(column("awesome", "vijay", 1)); |
| return cf; |
| } |
| |
| @Test |
| public void testSerializingCache() throws InterruptedException |
| { |
| ICache<MeasureableString, IRowCacheEntry> cache = SerializingCache.create(CAPACITY, Weighers.<RefCountedMemory>singleton(), new SerializingCacheProvider.RowCacheSerializer()); |
| ColumnFamily cf = createCF(); |
| simpleCase(cf, cache); |
| concurrentCase(cf, cache); |
| } |
| |
| @Test |
| public void testKeys() |
| { |
| Pair<String, String> ksAndCFName = Pair.create(KEYSPACE1, CF_STANDARD1); |
| byte[] b1 = {1, 2, 3, 4}; |
| RowCacheKey key1 = new RowCacheKey(ksAndCFName, ByteBuffer.wrap(b1)); |
| byte[] b2 = {1, 2, 3, 4}; |
| RowCacheKey key2 = new RowCacheKey(ksAndCFName, ByteBuffer.wrap(b2)); |
| assertEquals(key1, key2); |
| assertEquals(key1.hashCode(), key2.hashCode()); |
| |
| byte[] b3 = {1, 2, 3, 5}; |
| RowCacheKey key3 = new RowCacheKey(ksAndCFName, ByteBuffer.wrap(b3)); |
| assertNotSame(key1, key3); |
| assertNotSame(key1.hashCode(), key3.hashCode()); |
| } |
| |
| private class MeasureableString implements IMeasurableMemory |
| { |
| public final String string; |
| |
| public MeasureableString(String input) |
| { |
| this.string = input; |
| } |
| |
| public long unsharedHeapSize() |
| { |
| return string.length(); |
| } |
| } |
| } |