| /* |
| * 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.AbstractWatcher; |
| import org.apache.logging.log4j.core.util.FileWatcher; |
| import org.apache.logging.log4j.core.util.Source; |
| import org.apache.logging.log4j.core.util.Watcher; |
| |
| /** |
| * Watcher for configuration files. Causes a reconfiguration when a file changes. |
| */ |
| public class ConfigurationFileWatcher extends AbstractWatcher implements FileWatcher { |
| |
| private File file; |
| private long lastModifiedMillis; |
| |
| public ConfigurationFileWatcher(final Configuration configuration, final Reconfigurable reconfigurable, |
| final List<ConfigurationListener> configurationListeners, long lastModifiedMillis) { |
| super(configuration, reconfigurable, configurationListeners); |
| this.lastModifiedMillis = lastModifiedMillis; |
| } |
| |
| public long getLastModified() { |
| return file != null ? file.lastModified() : 0; |
| } |
| |
| @Override |
| public void fileModified(final File file) { |
| lastModifiedMillis = file.lastModified(); |
| } |
| |
| @Override |
| public void watching(Source source) { |
| file = source.getFile(); |
| lastModifiedMillis = file.lastModified(); |
| super.watching(source); |
| } |
| |
| @Override |
| public boolean isModified() { |
| return lastModifiedMillis != file.lastModified(); |
| } |
| |
| @Override |
| public Watcher newWatcher(final Reconfigurable reconfigurable, final List<ConfigurationListener> listeners, |
| long lastModifiedMillis) { |
| ConfigurationFileWatcher watcher = new ConfigurationFileWatcher(getConfiguration(), reconfigurable, listeners, |
| lastModifiedMillis); |
| if (getSource() != null) { |
| watcher.watching(getSource()); |
| } |
| return watcher; |
| } |
| } |