1 /*
2 * Copyright 2012 The Netty Project
3 *
4 * The Netty Project licenses this file to you under the Apache License,
5 * version 2.0 (the "License"); you may not use this file except in compliance
6 * with the License. You may obtain a copy of the License at:
7 *
8 * http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
12 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
13 * License for the specific language governing permissions and limitations
14 * under the License.
15 */
16 package io.netty.util.internal.logging;
17
18
19 import org.slf4j.LoggerFactory;
20 import org.slf4j.helpers.NOPLoggerFactory;
21
22 /**
23 * Logger factory which creates a <a href="http://www.slf4j.org/">SLF4J</a>
24 * logger.
25 */
26 public class Slf4JLoggerFactory extends InternalLoggerFactory {
27
28 @SuppressWarnings("deprecation")
29 public static final InternalLoggerFactory INSTANCE = new Slf4JLoggerFactory();
30
31 /**
32 * @deprecated Use {@link #INSTANCE} instead.
33 */
34 @Deprecated
35 public Slf4JLoggerFactory() {
36 }
37
38 Slf4JLoggerFactory(boolean failIfNOP) {
39 assert failIfNOP; // Should be always called with true.
40 if (LoggerFactory.getILoggerFactory() instanceof NOPLoggerFactory) {
41 throw new NoClassDefFoundError("NOPLoggerFactory not supported");
42 }
43 }
44
45 @Override
46 public InternalLogger newInstance(String name) {
47 return new Slf4JLogger(LoggerFactory.getLogger(name));
48 }
49 }