| /* |
| * 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.karaf.decanter.appender.file; |
| |
| import org.apache.karaf.decanter.api.marshaller.Marshaller; |
| import org.apache.karaf.decanter.appender.utils.EventFilter; |
| import org.osgi.service.component.ComponentContext; |
| import org.osgi.service.component.annotations.Activate; |
| import org.osgi.service.component.annotations.Component; |
| import org.osgi.service.component.annotations.Deactivate; |
| import org.osgi.service.component.annotations.Reference; |
| import org.osgi.service.event.Event; |
| import org.osgi.service.event.EventConstants; |
| import org.osgi.service.event.EventHandler; |
| |
| import java.io.BufferedWriter; |
| import java.io.File; |
| import java.io.FileWriter; |
| import java.util.Dictionary; |
| |
| @Component( |
| name = "org.apache.karaf.decanter.appender.file", |
| immediate = true, |
| property = EventConstants.EVENT_TOPIC + "=decanter/collect/*" |
| ) |
| public class FileAppender implements EventHandler { |
| |
| public static String FILENAME_PROPERTY = "filename"; |
| public static String APPEND_PROPERTY = "append"; |
| |
| @Reference |
| public Marshaller marshaller; |
| |
| private BufferedWriter writer; |
| |
| private Dictionary<String, Object> config; |
| |
| @Activate |
| public void activate(ComponentContext componentContext) throws Exception { |
| Dictionary<String, Object> config = componentContext.getProperties(); |
| open(config); |
| } |
| |
| public void open(Dictionary<String, Object> config) throws Exception { |
| this.config = config; |
| |
| String filename = (config.get(FILENAME_PROPERTY) != null) ? (String) config.get(FILENAME_PROPERTY) : System.getProperty("karaf.data") + File.separator + "decanter"; |
| boolean append = (config.get(APPEND_PROPERTY) != null) ? Boolean.parseBoolean((String) config.get(APPEND_PROPERTY)) : true; |
| |
| File file = new File(filename); |
| file.getParentFile().mkdirs(); |
| file.createNewFile(); |
| this.writer = new BufferedWriter(new FileWriter(file, append)); |
| } |
| |
| @Override |
| public void handleEvent(Event event) { |
| if (EventFilter.match(event, config)) { |
| try { |
| String marshalled = marshaller.marshal(event); |
| writer.write(marshalled); |
| writer.newLine(); |
| writer.flush(); |
| } catch (Exception e) { |
| // nothing to do |
| } |
| } |
| } |
| |
| @Deactivate |
| public void deactivate() throws Exception { |
| this.writer.flush(); |
| this.writer.close(); |
| } |
| |
| } |