/*
* Copyright 2011 the original author or authors.
*
* 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 org.gradle.api.internal.artifacts.ivyservice;
import org.gradle.api.Nullable;
import org.gradle.api.Transformer;
import org.gradle.cache.CacheBuilder;
import org.gradle.cache.CacheRepository;
import org.gradle.cache.PersistentCache;
import org.gradle.cache.PersistentIndexedCache;
import org.gradle.cache.PersistentIndexedCacheParameters;
import org.gradle.cache.internal.FileLockManager;
import org.gradle.internal.Factory;
import org.gradle.internal.serialize.Serializer;
import java.io.Closeable;
import static org.gradle.cache.internal.filelock.LockOptionsBuilder.mode;
public class DefaultCacheLockingManager implements CacheLockingManager, Closeable {
private final PersistentCache cache;
public DefaultCacheLockingManager(CacheRepository cacheRepository, ArtifactCacheMetaData cacheMetaData) {
cache = cacheRepository
.cache(cacheMetaData.getCacheDir())
.withCrossVersionCache(CacheBuilder.LockTarget.CacheDirectory)
.withDisplayName("artifact cache")
.withLockOptions(mode(FileLockManager.LockMode.None)) // Don't need to lock anything until we use the caches
.open();
}
@Override
public void close() {
cache.close();
}
@Override
public <T> T withFileLock(Factory<? extends T> action) {
return cache.withFileLock(action);
}
@Override
public <T> T useCache(Factory<? extends T> action) {
return cache.useCache(action);
}
@Override
public void useCache(Runnable action) {
cache.useCache(action);
}
@Override
public <K, V> PersistentIndexedCache<K, V> createCache(String cacheName, Serializer<K> keySerializer, Serializer<V> valueSerializer) {
String cacheFileInMetaDataStore = CacheLayout.META_DATA.getKey() + "/" + cacheName;
final PersistentIndexedCache<K, V> persistentCache = cache.createCache(new PersistentIndexedCacheParameters<K, V>(cacheFileInMetaDataStore, keySerializer, valueSerializer));
return new CacheLockingPersistentCache<K, V>(persistentCache);
}
private class CacheLockingPersistentCache<K, V> implements PersistentIndexedCache<K, V> {
private final PersistentIndexedCache<K, V> persistentCache;
public CacheLockingPersistentCache(PersistentIndexedCache<K, V> persistentCache) {
this.persistentCache = persistentCache;
}
@Nullable
@Override
public V get(final K key) {
return cache.useCache(new Factory<V>() {
@Override
public V create() {
return persistentCache.get(key);
}
});
}
@Override
public V get(final K key, final Transformer<? extends V, ? super K> producer) {
return cache.useCache(new Factory<V>() {
@Override
public V create() {
return persistentCache.get(key, producer);
}
});
}
@Override
public void put(final K key, final V value) {
cache.useCache(new Runnable() {
@Override
public void run() {
persistentCache.put(key, value);
}
});
}
@Override
public void remove(final K key) {
cache.useCache(new Runnable() {
@Override
public void run() {
persistentCache.remove(key);
}
});
}
}
}