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1   /*
2    * Licensed to the Apache Software Foundation (ASF) under one
3    * or more contributor license agreements.  See the NOTICE file
4    * distributed with this work for additional information
5    * regarding copyright ownership.  The ASF licenses this file
6    * to you under the Apache License, Version 2.0 (the
7    * "License"); you may not use this file except in compliance
8    * with the License.  You may obtain a copy of the License at
9    *
10   *   http://www.apache.org/licenses/LICENSE-2.0
11   *
12   * Unless required by applicable law or agreed to in writing,
13   * software distributed under the License is distributed on an
14   * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
15   * KIND, either express or implied.  See the License for the
16   * specific language governing permissions and limitations
17   * under the License.
18   */
19  package org.slf4j.impl;
20  
21  import java.util.Optional;
22  
23  import org.apache.maven.logwrapper.LogLevelRecorder;
24  import org.apache.maven.logwrapper.MavenSlf4jWrapperFactory;
25  import org.slf4j.Logger;
26  
27  /**
28   * LogFactory for Maven which can create a simple logger or one which, if set, fails the build on a severity threshold.
29   */
30  public class MavenLoggerFactory extends SimpleLoggerFactory implements MavenSlf4jWrapperFactory {
31      private LogLevelRecorder logLevelRecorder = null;
32  
33      @Override
34      public void setLogLevelRecorder(LogLevelRecorder logLevelRecorder) {
35          if (this.logLevelRecorder != null) {
36              throw new IllegalStateException("LogLevelRecorder has already been set.");
37          }
38  
39          this.logLevelRecorder = logLevelRecorder;
40      }
41  
42      @Override
43      public Optional<LogLevelRecorder> getLogLevelRecorder() {
44          return Optional.ofNullable(logLevelRecorder);
45      }
46  
47      /**
48       * Return an appropriate {@link MavenSimpleLogger} instance by name.
49       */
50      @Override
51      public Logger getLogger(String name) {
52          return loggerMap.computeIfAbsent(name, this::getNewLoggingInstance);
53      }
54  
55      private Logger getNewLoggingInstance(String name) {
56          if (logLevelRecorder == null) {
57              return new MavenSimpleLogger(name);
58          } else {
59              return new MavenFailOnSeverityLogger(name, logLevelRecorder);
60          }
61      }
62  }