/*
* Copyright 2015 Ben Manes. 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.github.benmanes.caffeine.jcache;
import static org.hamcrest.MatcherAssert.assertThat;
import static org.hamcrest.Matchers.is;
import java.util.Map;
import javax.cache.Cache;
import javax.cache.CacheManager;
import javax.cache.Caching;
import javax.cache.annotation.CacheResolverFactory;
import javax.cache.annotation.CacheResult;
import javax.cache.configuration.Factory;
import javax.cache.configuration.FactoryBuilder;
import javax.cache.integration.CacheLoader;
import javax.cache.spi.CachingProvider;
import org.jsr107.ri.annotations.DefaultCacheResolverFactory;
import org.jsr107.ri.annotations.guice.module.CacheAnnotationsModule;
import org.testng.annotations.AfterClass;
import org.testng.annotations.BeforeMethod;
import org.testng.annotations.Test;
import com.github.benmanes.caffeine.jcache.configuration.FactoryCreator;
import com.github.benmanes.caffeine.jcache.configuration.TypesafeConfigurator;
import com.github.benmanes.caffeine.jcache.spi.CaffeineCachingProvider;
import com.google.common.collect.ImmutableMap;
import com.google.common.collect.ImmutableSet;
import com.google.common.collect.Maps;
import com.google.inject.AbstractModule;
import com.google.inject.Guice;
import com.google.inject.Inject;
import com.google.inject.Injector;
import com.google.inject.Module;
import com.google.inject.util.Modules;
/**
* @author ben.manes@gmail.com (Ben Manes)
*/
public final class JCacheGuiceTest {
@Inject CacheManager cacheManager;
@Inject Service service;
@BeforeMethod
public void beforeMethod() {
Module module = Modules.override(new CacheAnnotationsModule()).with(new CaffeineJCacheModule());
Guice.createInjector(module).injectMembers(this);
}
@AfterClass
public void afterClass() {
TypesafeConfigurator.setFactoryCreator(FactoryBuilder::factoryOf);
}
@Test
public void factory() {
Cache<Integer, Integer> cache = cacheManager.getCache("guice");
Map<Integer, Integer> result = cache.getAll(ImmutableSet.of(1, 2, 3));
assertThat(result, is(ImmutableMap.of(1, 1, 2, 2, 3, 3)));
}
@Test
public void annotations() {
for (int i = 0; i < 10; i++) {
assertThat(service.get(), is(1));
}
assertThat(service.times, is(1));
}
static class Service {
int times;
@CacheResult(cacheName = "annotations")
public Integer get() {
return ++times;
}
}
public static final class InjectedCacheLoader implements CacheLoader<Integer, Integer> {
private final Service service;
@Inject
InjectedCacheLoader(Service service) {
this.service = service;
}
@Override
public Integer load(Integer key) {
return ++service.times;
}
@Override
public Map<Integer, Integer> loadAll(Iterable<? extends Integer> keys) {
return Maps.toMap(ImmutableSet.copyOf(keys), this::load);
}
}
static final class GuiceFactoryCreator implements FactoryCreator {
final Injector injector;
@Inject
GuiceFactoryCreator(Injector injector) {
this.injector = injector;
}
@Override
@SuppressWarnings("unchecked")
public <T> Factory<T> factoryOf(String className) {
try {
Class<T> clazz = (Class<T>) Class.forName(className);
return injector.getProvider(clazz)::get;
} catch (ClassNotFoundException e) {
throw new RuntimeException(e);
}
}
}
static final class CaffeineJCacheModule extends AbstractModule {
@Override protected void configure() {
configureCachingProvider();
requestStaticInjection(TypesafeConfigurator.class);
bind(FactoryCreator.class).to(GuiceFactoryCreator.class);
}
/** Resolves the annotations to the provider as multiple are on the IDE's classpath. */
void configureCachingProvider() {
CachingProvider provider = Caching.getCachingProvider(
CaffeineCachingProvider.class.getName());
CacheManager cacheManager = provider.getCacheManager(
provider.getDefaultURI(), provider.getDefaultClassLoader());
bind(CacheResolverFactory.class).toInstance(new DefaultCacheResolverFactory(cacheManager));
bind(CacheManager.class).toInstance(cacheManager);
}
}
}