com.netflix.hystrix.contrib.javanica.cache.HystrixRequestCacheManager Maven / Gradle / Ivy
/**
* Copyright 2015 Netflix, Inc.
*
* 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.netflix.hystrix.contrib.javanica.cache;
import com.netflix.hystrix.HystrixCommandKey;
import com.netflix.hystrix.HystrixRequestCache;
import com.netflix.hystrix.contrib.javanica.cache.annotation.CacheRemove;
import com.netflix.hystrix.strategy.concurrency.HystrixConcurrencyStrategyDefault;
/**
* Cache manager to work with {@link HystrixRequestCache}.
*
* @author dmgcodevil
*/
public final class HystrixRequestCacheManager {
private static final HystrixRequestCacheManager INSTANCE = new HystrixRequestCacheManager();
private HystrixRequestCacheManager() {
}
public static HystrixRequestCacheManager getInstance() {
return INSTANCE;
}
/**
* Clears the cache for a given cacheKey context.
*
* @param context the runtime information about an intercepted method invocation for a method
* annotated with {@link CacheRemove} annotation
*/
public void clearCache(CacheInvocationContext context) {
HystrixCacheKeyGenerator defaultCacheKeyGenerator = HystrixCacheKeyGenerator.getInstance();
String cacheName = context.getCacheAnnotation().commandKey();
HystrixGeneratedCacheKey hystrixGeneratedCacheKey =
defaultCacheKeyGenerator.generateCacheKey(context);
String key = hystrixGeneratedCacheKey.getCacheKey();
HystrixRequestCache.getInstance(HystrixCommandKey.Factory.asKey(cacheName),
HystrixConcurrencyStrategyDefault.getInstance()).clear(key);
}
}