b60e0b6a51
- Borrow SLF4J API which is the best of the best - InternalLoggerFactory now automatically detects the logging framework using static class loading. It tries SLF4J, Log4J, and then falls back to java.util.logging. - Remove OsgiLogger because it is very likely that OSGi container already provides a bridge for existing logging frameworks - Remove JBossLogger because the latest JBossLogger implementation seems to implement SLF4J binding - Upgrade SLF4J to 1.7.2 - Remove tests for the untestable logging frameworks - Remove TestAny
70 lines
2.2 KiB
Java
70 lines
2.2 KiB
Java
/*
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* Copyright 2012 The Netty Project
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*
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* The Netty Project licenses this file to you under the Apache License,
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* version 2.0 (the "License"); you may not use this file except in compliance
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* with the License. You may obtain a copy of the License at:
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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* License for the specific language governing permissions and limitations
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* under the License.
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*/
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package io.netty.logging;
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import org.slf4j.LoggerFactory;
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import org.slf4j.helpers.NOPLoggerFactory;
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import java.io.OutputStream;
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import java.io.PrintStream;
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import java.io.UnsupportedEncodingException;
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/**
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* Logger factory which creates a <a href="http://www.slf4j.org/">SLF4J</a>
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* logger.
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*/
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public class Slf4JLoggerFactory extends InternalLoggerFactory {
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public Slf4JLoggerFactory() {
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}
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Slf4JLoggerFactory(boolean failIfNOP) {
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assert failIfNOP; // Should be always called with true.
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// SFL4J writes it error messages to System.err. Capture them so that the user does not see such a message on
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// the console during automatic detection.
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final StringBuffer buf = new StringBuffer();
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final PrintStream err = System.err;
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try {
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System.setErr(new PrintStream(new OutputStream() {
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@Override
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public void write(int b) {
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buf.append((char) b);
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}
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}, true, "US-ASCII"));
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} catch (UnsupportedEncodingException e) {
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throw new Error(e);
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}
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try {
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if (LoggerFactory.getILoggerFactory() instanceof NOPLoggerFactory) {
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throw new NoClassDefFoundError(buf.toString());
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} else {
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err.print(buf.toString());
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err.flush();
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}
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} finally {
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System.setErr(err);
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}
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}
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@Override
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public InternalLogger newInstance(String name) {
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return new Slf4JLogger(LoggerFactory.getLogger(name));
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}
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}
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