| // Copyright (C) 2022 The Android Open Source Project |
| // |
| // 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.highavailability; |
| |
| import com.ericsson.gerrit.plugins.highavailability.forwarder.AllowedForwardedEventListener; |
| import com.google.gerrit.server.events.EventListener; |
| import com.google.inject.Inject; |
| import java.util.Set; |
| import java.util.concurrent.ConcurrentHashMap; |
| |
| /** Configure the allowed listeners in high-availability.config */ |
| public class ConfigurableAllowedEventListeners implements AllowedForwardedEventListener { |
| private final Set<String> allowedListenerClasses; |
| private final ConcurrentHashMap<EventListener, Boolean> cachedAllowedListeners; |
| |
| @Inject |
| ConfigurableAllowedEventListeners(Configuration config) { |
| allowedListenerClasses = config.event().allowedListeners(); |
| cachedAllowedListeners = new ConcurrentHashMap<>(); |
| } |
| |
| @Override |
| public boolean isAllowed(EventListener listener) { |
| return cachedAllowedListeners.computeIfAbsent(listener, this::computeIsAllowed); |
| } |
| |
| protected Boolean computeIsAllowed(EventListener listener) { |
| String listenerClassName = listener.getClass().getName(); |
| boolean allowed = false; |
| while (!allowed && !listenerClassName.isEmpty()) { |
| allowed = allowedListenerClasses.contains(listenerClassName); |
| int lastDotPos = Math.max(listenerClassName.lastIndexOf('.'), 0); |
| listenerClassName = listenerClassName.substring(0, lastDotPos); |
| } |
| |
| return allowed; |
| } |
| } |