/*
* 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.jackrabbit.aws.ext;
import java.io.ByteArrayInputStream;
import java.io.File;
import java.io.IOException;
import java.io.InputStream;
import java.util.HashMap;
import java.util.Map;
import java.util.Random;
import junit.framework.TestCase;
import org.apache.commons.io.FileUtils;
import org.apache.jackrabbit.core.data.LocalCache;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
/**
* Testcase to test local cache.
*/
public class TestLocalCache extends TestCase {
private static final String CACHE_DIR = "target/cache";
private static final String TEMP_DIR = "target/temp";
private static final Logger LOG = LoggerFactory.getLogger(TestLocalCache.class);
@Override
protected void setUp() {
try {
File cachedir = new File(CACHE_DIR);
if (cachedir.exists()) {
FileUtils.deleteQuietly(cachedir);
}
cachedir.mkdirs();
File tempdir = new File(TEMP_DIR);
if (tempdir.exists()) {
FileUtils.deleteQuietly(tempdir);
}
tempdir.mkdirs();
} catch (Exception e) {
LOG.error("error:", e);
fail();
}
}
@Override
protected void tearDown() throws IOException {
File cachedir = new File(CACHE_DIR);
if (cachedir.exists()) {
FileUtils.deleteQuietly(cachedir);
}
File tempdir = new File(TEMP_DIR);
if (tempdir.exists()) {
FileUtils.deleteQuietly(tempdir);
}
}
/**
* Test to validate store retrieve in cache.
*/
public void testStoreRetrieve() {
try {
LocalCache cache = new LocalCache(CACHE_DIR, TEMP_DIR, 400, 0.95,
0.70);
Random random = new Random(12345);
byte[] data = new byte[100];
Map<String, byte[]> byteMap = new HashMap<String, byte[]>();
random.nextBytes(data);
byteMap.put("a1", data);
data = new byte[100];
random.nextBytes(data);
byteMap.put("a2", data);
data = new byte[100];
random.nextBytes(data);
byteMap.put("a3", data);
cache.store("a1", new ByteArrayInputStream(byteMap.get("a1")));
cache.store("a2", new ByteArrayInputStream(byteMap.get("a2")));
cache.store("a3", new ByteArrayInputStream(byteMap.get("a3")));
assertEquals(new ByteArrayInputStream(byteMap.get("a1")),
cache.getIfStored("a1"));
assertEquals(new ByteArrayInputStream(byteMap.get("a2")),
cache.getIfStored("a2"));
assertEquals(new ByteArrayInputStream(byteMap.get("a3")),
cache.getIfStored("a3"));
} catch (Exception e) {
LOG.error("error:", e);
fail();
}
}
/**
* Test to verify cache's purging if cache current size exceeds
* cachePurgeTrigFactor * size.
*/
public void testAutoPurge() {
try {
LocalCache cache = new LocalCache(CACHE_DIR, TEMP_DIR, 400, 0.95,
0.70);
Random random = new Random(12345);
byte[] data = new byte[100];
Map<String, byte[]> byteMap = new HashMap<String, byte[]>();
random.nextBytes(data);
byteMap.put("a1", data);
data = new byte[100];
random.nextBytes(data);
byteMap.put("a2", data);
data = new byte[100];
random.nextBytes(data);
byteMap.put("a3", data);
data = new byte[100];
random.nextBytes(data);
byteMap.put("a4", data);
cache.store("a1", new ByteArrayInputStream(byteMap.get("a1")));
cache.store("a2", new ByteArrayInputStream(byteMap.get("a2")));
cache.store("a3", new ByteArrayInputStream(byteMap.get("a3")));
assertEquals(new ByteArrayInputStream(byteMap.get("a1")),
cache.getIfStored("a1"));
assertEquals(new ByteArrayInputStream(byteMap.get("a2")),
cache.getIfStored("a2"));
assertEquals(new ByteArrayInputStream(byteMap.get("a3")),
cache.getIfStored("a3"));
data = new byte[90];
random.nextBytes(data);
byteMap.put("a4", data);
// storing a4 should purge cache
cache.store("a4", new ByteArrayInputStream(byteMap.get("a4")));
Thread.sleep(1000);
assertNull("a1 should be null", cache.getIfStored("a1"));
assertNull("a2 should be null", cache.getIfStored("a2"));
assertEquals(new ByteArrayInputStream(byteMap.get("a3")),
cache.getIfStored("a3"));
assertEquals(new ByteArrayInputStream(byteMap.get("a4")),
cache.getIfStored("a4"));
data = new byte[100];
random.nextBytes(data);
byteMap.put("a5", data);
cache.store("a5", new ByteArrayInputStream(byteMap.get("a5")));
assertEquals(new ByteArrayInputStream(byteMap.get("a3")),
cache.getIfStored("a3"));
} catch (Exception e) {
LOG.error("error:", e);
fail();
}
}
/**
* Assert two inputstream
*/
protected void assertEquals(InputStream a, InputStream b)
throws IOException {
while (true) {
int ai = a.read();
int bi = b.read();
assertEquals(ai, bi);
if (ai < 0) {
break;
}
}
}
}