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1   /*
2    * Licensed to the Apache Software Foundation (ASF) under one or more
3    * contributor license agreements. See the NOTICE file distributed with
4    * this work for additional information regarding copyright ownership.
5    * The ASF licenses this file to You under the Apache license, Version 2.0
6    * (the "License"); you may not use this file except in compliance with
7    * the License. You may obtain a copy of the License at
8    *
9    *      http://www.apache.org/licenses/LICENSE-2.0
10   *
11   * Unless required by applicable law or agreed to in writing, software
12   * distributed under the License is distributed on an "AS IS" BASIS,
13   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14   * See the license for the specific language governing permissions and
15   * limitations under the license.
16   */
17  package org.apache.logging.log4j.core.layout;
18  
19  import java.util.HashMap;
20  import java.util.List;
21  import java.util.Map;
22  
23  import org.apache.logging.log4j.Logger;
24  import org.apache.logging.log4j.Marker;
25  import org.apache.logging.log4j.core.LogEvent;
26  import org.apache.logging.log4j.core.config.Configuration;
27  import org.apache.logging.log4j.core.config.Node;
28  import org.apache.logging.log4j.core.config.plugins.Plugin;
29  import org.apache.logging.log4j.core.config.plugins.PluginBuilderAttribute;
30  import org.apache.logging.log4j.core.config.plugins.PluginBuilderFactory;
31  import org.apache.logging.log4j.core.config.plugins.PluginConfiguration;
32  import org.apache.logging.log4j.core.config.plugins.PluginElement;
33  import org.apache.logging.log4j.core.pattern.PatternFormatter;
34  import org.apache.logging.log4j.core.pattern.PatternParser;
35  import org.apache.logging.log4j.status.StatusLogger;
36  
37  /**
38   * Selects the pattern to use based on the Marker in the LogEvent.
39   */
40  @Plugin(name = "MarkerPatternSelector", category = Node.CATEGORY, elementType = PatternSelector.ELEMENT_TYPE, printObject = true)
41  public class MarkerPatternSelector implements PatternSelector {
42  
43      /**
44       * Custom MarkerPatternSelector builder. Use the {@link MarkerPatternSelector#newBuilder() builder factory method} to create this.
45       */
46      public static class Builder implements org.apache.logging.log4j.core.util.Builder<MarkerPatternSelector> {
47  
48          @PluginElement("PatternMatch")
49          private PatternMatch[] properties;
50          
51          @PluginBuilderAttribute("defaultPattern")
52          private String defaultPattern;
53          
54          @PluginBuilderAttribute(value = "alwaysWriteExceptions") 
55          private boolean alwaysWriteExceptions = true;
56          
57          @PluginBuilderAttribute(value = "disableAnsi")
58          private boolean disableAnsi;
59          
60          @PluginBuilderAttribute(value = "noConsoleNoAnsi")
61          private boolean noConsoleNoAnsi;
62  
63          @PluginConfiguration
64          private Configuration configuration;
65  
66          @Override
67          public MarkerPatternSelector build() {
68              if (defaultPattern == null) {
69                  defaultPattern = PatternLayout.DEFAULT_CONVERSION_PATTERN;
70              }
71              if (properties == null || properties.length == 0) {
72                  LOGGER.warn("No marker patterns were provided with PatternMatch");
73                  return null;
74              }
75              return new MarkerPatternSelector(properties, defaultPattern, alwaysWriteExceptions, disableAnsi,
76                      noConsoleNoAnsi, configuration);
77          }
78  
79          public Builder setProperties(final PatternMatch[] properties) {
80              this.properties = properties;
81              return this;
82          }
83  
84          public Builder setDefaultPattern(final String defaultPattern) {
85              this.defaultPattern = defaultPattern;
86              return this;
87          }
88  
89          public Builder setAlwaysWriteExceptions(final boolean alwaysWriteExceptions) {
90              this.alwaysWriteExceptions = alwaysWriteExceptions;
91              return this;
92          }
93  
94          public Builder setDisableAnsi(final boolean disableAnsi) {
95              this.disableAnsi = disableAnsi;
96              return this;
97          }
98  
99          public Builder setNoConsoleNoAnsi(final boolean noConsoleNoAnsi) {
100             this.noConsoleNoAnsi = noConsoleNoAnsi;
101             return this;
102         }
103 
104         public Builder setConfiguration(final Configuration configuration) {
105             this.configuration = configuration;
106             return this;
107         }
108 
109     }
110     
111     private final Map<String, PatternFormatter[]> formatterMap = new HashMap<>();
112 
113     private final Map<String, String> patternMap = new HashMap<>();
114 
115     private final PatternFormatter[] defaultFormatters;
116 
117     private final String defaultPattern;
118 
119     private static Logger LOGGER = StatusLogger.getLogger();
120 
121 
122     /**
123      * @deprecated Use {@link #newBuilder()} instead. This will be private in a future version.
124      */
125     @Deprecated
126     public MarkerPatternSelector(final PatternMatch[] properties, final String defaultPattern,
127                                  final boolean alwaysWriteExceptions, final boolean noConsoleNoAnsi,
128                                  final Configuration config) {
129         this(properties, defaultPattern, alwaysWriteExceptions, false, noConsoleNoAnsi, config);
130     }
131 
132     private MarkerPatternSelector(final PatternMatch[] properties, final String defaultPattern,
133                                  final boolean alwaysWriteExceptions, final boolean disableAnsi,
134                                  final boolean noConsoleNoAnsi, final Configuration config) {
135         final PatternParser parser = PatternLayout.createPatternParser(config);
136         for (final PatternMatch property : properties) {
137             try {
138                 final List<PatternFormatter> list = parser.parse(property.getPattern(), alwaysWriteExceptions,
139                         disableAnsi, noConsoleNoAnsi);
140                 formatterMap.put(property.getKey(), list.toArray(new PatternFormatter[list.size()]));
141                 patternMap.put(property.getKey(), property.getPattern());
142             } catch (final RuntimeException ex) {
143                 throw new IllegalArgumentException("Cannot parse pattern '" + property.getPattern() + "'", ex);
144             }
145         }
146         try {
147             final List<PatternFormatter> list = parser.parse(defaultPattern, alwaysWriteExceptions, disableAnsi,
148                     noConsoleNoAnsi);
149             defaultFormatters = list.toArray(new PatternFormatter[list.size()]);
150             this.defaultPattern = defaultPattern;
151         } catch (final RuntimeException ex) {
152             throw new IllegalArgumentException("Cannot parse pattern '" + defaultPattern + "'", ex);
153         }
154     }
155 
156     @Override
157     public PatternFormatter[] getFormatters(final LogEvent event) {
158         final Marker marker = event.getMarker();
159         if (marker == null) {
160             return defaultFormatters;
161         }
162         for (final String key : formatterMap.keySet()) {
163             if (marker.isInstanceOf(key)) {
164                 return formatterMap.get(key);
165             }
166         }
167         return defaultFormatters;
168     }
169 
170     /**
171      * Creates a builder for a custom ScriptPatternSelector.
172      *
173      * @return a ScriptPatternSelector builder.
174      */
175     @PluginBuilderFactory
176     public static Builder newBuilder() {
177         return new Builder();
178     }
179 
180     /**
181      * Deprecated, use {@link #newBuilder()} instead.
182      * @param properties
183      * @param defaultPattern
184      * @param alwaysWriteExceptions
185      * @param noConsoleNoAnsi
186      * @param configuration
187      * @return a new MarkerPatternSelector.
188      * @deprecated Use {@link #newBuilder()} instead.
189      */
190     @Deprecated
191     public static MarkerPatternSelector createSelector(
192             final PatternMatch[] properties,
193             final String defaultPattern,
194             final boolean alwaysWriteExceptions,
195             final boolean noConsoleNoAnsi,
196             final Configuration configuration) {
197         final Builder builder = newBuilder();
198         builder.setProperties(properties);
199         builder.setDefaultPattern(defaultPattern);
200         builder.setAlwaysWriteExceptions(alwaysWriteExceptions);
201         builder.setNoConsoleNoAnsi(noConsoleNoAnsi);
202         builder.setConfiguration(configuration);
203         return builder.build();
204     }
205 
206     @Override
207     public String toString() {
208         final StringBuilder sb = new StringBuilder();
209         boolean first = true;
210         for (final Map.Entry<String, String> entry : patternMap.entrySet()) {
211             if (!first) {
212                 sb.append(", ");
213             }
214             sb.append("key=\"").append(entry.getKey()).append("\", pattern=\"").append(entry.getValue()).append("\"");
215             first = false;
216         }
217         if (!first) {
218             sb.append(", ");
219         }
220         sb.append("default=\"").append(defaultPattern).append("\"");
221         return sb.toString();
222     }
223 }