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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.PluginAttribute;
30  import org.apache.logging.log4j.core.config.plugins.PluginBuilderAttribute;
31  import org.apache.logging.log4j.core.config.plugins.PluginBuilderFactory;
32  import org.apache.logging.log4j.core.config.plugins.PluginConfiguration;
33  import org.apache.logging.log4j.core.config.plugins.PluginElement;
34  import org.apache.logging.log4j.core.layout.ScriptPatternSelector.Builder;
35  import org.apache.logging.log4j.core.pattern.PatternFormatter;
36  import org.apache.logging.log4j.core.pattern.PatternParser;
37  import org.apache.logging.log4j.status.StatusLogger;
38  
39  /**
40   * Selects the pattern to use based on the Marker in the LogEvent.
41   */
42  @Plugin(name = "MarkerPatternSelector", category = Node.CATEGORY, elementType = PatternSelector.ELEMENT_TYPE, printObject = true)
43  public class MarkerPatternSelector implements PatternSelector {
44  
45      /**
46       * Custom MarkerPatternSelector builder. Use the {@link MarkerPatternSelector#newBuilder() builder factory method} to create this.
47       */
48      public static class Builder implements org.apache.logging.log4j.core.util.Builder<MarkerPatternSelector> {
49  
50          @PluginElement("PatternMatch")
51          private PatternMatch[] properties;
52          
53          @PluginBuilderAttribute("defaultPattern")
54          private String defaultPattern;
55          
56          @PluginBuilderAttribute(value = "alwaysWriteExceptions") 
57          private boolean alwaysWriteExceptions = true;
58          
59          @PluginBuilderAttribute(value = "disableAnsi")
60          private boolean disableAnsi;
61          
62          @PluginBuilderAttribute(value = "noConsoleNoAnsi")
63          private boolean noConsoleNoAnsi;
64  
65          @PluginConfiguration
66          private Configuration configuration;
67  
68          @Override
69          public MarkerPatternSelector build() {
70              if (defaultPattern == null) {
71                  defaultPattern = PatternLayout.DEFAULT_CONVERSION_PATTERN;
72              }
73              if (properties == null || properties.length == 0) {
74                  LOGGER.warn("No marker patterns were provided with PatternMatch");
75                  return null;
76              }
77              return new MarkerPatternSelector(properties, defaultPattern, alwaysWriteExceptions, disableAnsi,
78                      noConsoleNoAnsi, configuration);
79          }
80  
81          public Builder setProperties(final PatternMatch[] properties) {
82              this.properties = properties;
83              return this;
84          }
85  
86          public Builder setDefaultPattern(final String defaultPattern) {
87              this.defaultPattern = defaultPattern;
88              return this;
89          }
90  
91          public Builder setAlwaysWriteExceptions(final boolean alwaysWriteExceptions) {
92              this.alwaysWriteExceptions = alwaysWriteExceptions;
93              return this;
94          }
95  
96          public Builder setDisableAnsi(final boolean disableAnsi) {
97              this.disableAnsi = disableAnsi;
98              return this;
99          }
100 
101         public Builder setNoConsoleNoAnsi(final boolean noConsoleNoAnsi) {
102             this.noConsoleNoAnsi = noConsoleNoAnsi;
103             return this;
104         }
105 
106         public Builder setConfiguration(final Configuration configuration) {
107             this.configuration = configuration;
108             return this;
109         }
110 
111     }
112     
113     private final Map<String, PatternFormatter[]> formatterMap = new HashMap<>();
114 
115     private final Map<String, String> patternMap = new HashMap<>();
116 
117     private final PatternFormatter[] defaultFormatters;
118 
119     private final String defaultPattern;
120 
121     private static Logger LOGGER = StatusLogger.getLogger();
122 
123 
124     /**
125      * @deprecated Use {@link #newBuilder()} instead. This will be private in a future version.
126      */
127     @Deprecated
128     public MarkerPatternSelector(final PatternMatch[] properties, final String defaultPattern,
129                                  final boolean alwaysWriteExceptions, final boolean noConsoleNoAnsi,
130                                  final Configuration config) {
131         this(properties, defaultPattern, alwaysWriteExceptions, false, noConsoleNoAnsi, config);
132     }
133 
134     private MarkerPatternSelector(final PatternMatch[] properties, final String defaultPattern,
135                                  final boolean alwaysWriteExceptions, final boolean disableAnsi,
136                                  final boolean noConsoleNoAnsi, final Configuration config) {
137         final PatternParser parser = PatternLayout.createPatternParser(config);
138         for (final PatternMatch property : properties) {
139             try {
140                 final List<PatternFormatter> list = parser.parse(property.getPattern(), alwaysWriteExceptions,
141                         disableAnsi, noConsoleNoAnsi);
142                 formatterMap.put(property.getKey(), list.toArray(new PatternFormatter[list.size()]));
143                 patternMap.put(property.getKey(), property.getPattern());
144             } catch (final RuntimeException ex) {
145                 throw new IllegalArgumentException("Cannot parse pattern '" + property.getPattern() + "'", ex);
146             }
147         }
148         try {
149             final List<PatternFormatter> list = parser.parse(defaultPattern, alwaysWriteExceptions, disableAnsi,
150                     noConsoleNoAnsi);
151             defaultFormatters = list.toArray(new PatternFormatter[list.size()]);
152             this.defaultPattern = defaultPattern;
153         } catch (final RuntimeException ex) {
154             throw new IllegalArgumentException("Cannot parse pattern '" + defaultPattern + "'", ex);
155         }
156     }
157 
158     @Override
159     public PatternFormatter[] getFormatters(final LogEvent event) {
160         final Marker marker = event.getMarker();
161         if (marker == null) {
162             return defaultFormatters;
163         }
164         for (final String key : formatterMap.keySet()) {
165             if (marker.isInstanceOf(key)) {
166                 return formatterMap.get(key);
167             }
168         }
169         return defaultFormatters;
170     }
171 
172     /**
173      * Creates a builder for a custom ScriptPatternSelector.
174      *
175      * @return a ScriptPatternSelector builder.
176      */
177     @PluginBuilderFactory
178     public static Builder newBuilder() {
179         return new Builder();
180     }
181 
182     /**
183      * Deprecated, use {@link #newBuilder()} instead.
184      * @param properties
185      * @param defaultPattern
186      * @param alwaysWriteExceptions
187      * @param noConsoleNoAnsi
188      * @param configuration
189      * @return a new MarkerPatternSelector.
190      * @deprecated Use {@link #newBuilder()} instead.
191      */
192     @Deprecated
193     public static MarkerPatternSelector createSelector(
194             final PatternMatch[] properties,
195             final String defaultPattern,
196             final boolean alwaysWriteExceptions,
197             final boolean noConsoleNoAnsi,
198             final Configuration configuration) {
199         final Builder builder = newBuilder();
200         builder.setProperties(properties);
201         builder.setDefaultPattern(defaultPattern);
202         builder.setAlwaysWriteExceptions(alwaysWriteExceptions);
203         builder.setNoConsoleNoAnsi(noConsoleNoAnsi);
204         builder.setConfiguration(configuration);
205         return builder.build();
206     }
207 
208     @Override
209     public String toString() {
210         final StringBuilder sb = new StringBuilder();
211         boolean first = true;
212         for (final Map.Entry<String, String> entry : patternMap.entrySet()) {
213             if (!first) {
214                 sb.append(", ");
215             }
216             sb.append("key=\"").append(entry.getKey()).append("\", pattern=\"").append(entry.getValue()).append("\"");
217             first = false;
218         }
219         if (!first) {
220             sb.append(", ");
221         }
222         sb.append("default=\"").append(defaultPattern).append("\"");
223         return sb.toString();
224     }
225 }