| package org.apache.lucene.util; |
| |
| /* |
| * 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. |
| */ |
| |
| import java.io.IOException; |
| import java.io.PrintStream; |
| import java.util.Date; |
| import java.util.concurrent.atomic.AtomicInteger; |
| |
| /** |
| * InfoStream implementation over a {@link PrintStream} |
| * such as <code>System.out</code>. |
| * |
| * @lucene.internal |
| */ |
| public class PrintStreamInfoStream extends InfoStream { |
| // Used for printing messages |
| private static final AtomicInteger MESSAGE_ID = new AtomicInteger(); |
| protected final int messageID; |
| |
| protected final PrintStream stream; |
| |
| public PrintStreamInfoStream(PrintStream stream) { |
| this(stream, MESSAGE_ID.getAndIncrement()); |
| } |
| |
| public PrintStreamInfoStream(PrintStream stream, int messageID) { |
| this.stream = stream; |
| this.messageID = messageID; |
| } |
| |
| @Override |
| public void message(String component, String message) { |
| stream.println(component + " " + messageID + " [" + new Date() + "; " + Thread.currentThread().getName() + "]: " + message); |
| } |
| |
| @Override |
| public boolean isEnabled(String component) { |
| return true; |
| } |
| |
| @Override |
| public void close() throws IOException { |
| if (!isSystemStream()) { |
| stream.close(); |
| } |
| } |
| |
| public boolean isSystemStream() { |
| return stream == System.out || stream == System.err; |
| } |
| } |