| // Copyright (C) 2015 Ericsson |
| // |
| // 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.ericsson.gerrit.plugins.evictcache; |
| |
| import com.google.common.cache.RemovalNotification; |
| import com.google.gerrit.server.cache.CacheRemovalListener; |
| import com.google.inject.Inject; |
| |
| import java.util.concurrent.ScheduledThreadPoolExecutor; |
| import java.util.regex.Pattern; |
| |
| class EvictCacheHandler<K, V> implements CacheRemovalListener<K, V> { |
| private final ScheduledThreadPoolExecutor executor; |
| private final RestSession restSession; |
| private final Pattern pattern; |
| |
| @Inject |
| EvictCacheHandler(RestSession restSession, |
| @EvictCacheExecutor ScheduledThreadPoolExecutor executor) { |
| this.restSession = restSession; |
| this.executor = executor; |
| pattern = Pattern.compile( |
| "^accounts.*|^groups.*|ldap_groups|ldap_usernames|^project.*|sshkeys|web_sessions"); |
| } |
| |
| @Override |
| public void onRemoval(String pluginName, String cacheName, |
| RemovalNotification<K, V> notification) { |
| if (!Context.isForwardedEvent() && !notification.wasEvicted() |
| && isSynchronized(cacheName)) { |
| executor.execute( |
| new EvictCacheTask(pluginName, cacheName, notification.getKey())); |
| } |
| } |
| |
| private boolean isSynchronized(String cacheName) { |
| return pattern.matcher(cacheName).matches(); |
| } |
| |
| class EvictCacheTask implements Runnable { |
| private String pluginName; |
| private String cacheName; |
| private Object key; |
| |
| EvictCacheTask(String pluginName, String cacheName, Object key) { |
| this.pluginName = pluginName; |
| this.cacheName = cacheName; |
| this.key = key; |
| } |
| |
| @Override |
| public void run() { |
| restSession.evict(pluginName, cacheName, key); |
| } |
| |
| @Override |
| public String toString() { |
| return String.format("Evict key '%s' from cache '%s' in target instance", |
| key, cacheName); |
| } |
| } |
| } |