| /* |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. |
| * The ASF licenses this file to You 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.apache.logging.log4j.core.config; |
| |
| import java.io.File; |
| import java.util.List; |
| |
| import org.apache.logging.log4j.core.util.FileWatcher; |
| import org.apache.logging.log4j.core.util.Log4jThreadFactory; |
| |
| /** |
| * Watcher for configuration files. Causes a reconfiguration when a file changes. |
| */ |
| public class ConfiguratonFileWatcher implements FileWatcher { |
| |
| private final Reconfigurable reconfigurable; |
| private final List<ConfigurationListener> configurationListeners; |
| private final Log4jThreadFactory threadFactory; |
| |
| public ConfiguratonFileWatcher(final Reconfigurable reconfigurable, final List<ConfigurationListener> configurationListeners) { |
| this.reconfigurable = reconfigurable; |
| this.configurationListeners = configurationListeners; |
| this.threadFactory = Log4jThreadFactory.createDaemonThreadFactory("ConfiguratonFileWatcher"); |
| } |
| |
| public List<ConfigurationListener> getListeners() { |
| return configurationListeners; |
| } |
| |
| |
| @Override |
| public void fileModified(final File file) { |
| for (final ConfigurationListener configurationListener : configurationListeners) { |
| final Thread thread = threadFactory.newThread(new ReconfigurationRunnable(configurationListener, reconfigurable)); |
| thread.start(); |
| } |
| } |
| |
| /** |
| * Helper class for triggering a reconfiguration in a background thread. |
| */ |
| private static class ReconfigurationRunnable implements Runnable { |
| |
| private final ConfigurationListener configurationListener; |
| private final Reconfigurable reconfigurable; |
| |
| public ReconfigurationRunnable(final ConfigurationListener configurationListener, final Reconfigurable reconfigurable) { |
| this.configurationListener = configurationListener; |
| this.reconfigurable = reconfigurable; |
| } |
| |
| @Override |
| public void run() { |
| configurationListener.onChange(reconfigurable); |
| } |
| } |
| } |