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17 package org.apache.logging.log4j.core.filter;
18
19 import java.util.HashMap;
20 import java.util.Map;
21
22 import org.apache.logging.log4j.Level;
23 import org.apache.logging.log4j.Marker;
24 import org.apache.logging.log4j.ThreadContext;
25 import org.apache.logging.log4j.core.Filter;
26 import org.apache.logging.log4j.core.LogEvent;
27 import org.apache.logging.log4j.core.Logger;
28 import org.apache.logging.log4j.core.config.Node;
29 import org.apache.logging.log4j.core.config.plugins.Plugin;
30 import org.apache.logging.log4j.core.config.plugins.PluginAttribute;
31 import org.apache.logging.log4j.core.config.plugins.PluginElement;
32 import org.apache.logging.log4j.core.config.plugins.PluginFactory;
33 import org.apache.logging.log4j.core.util.KeyValuePair;
34 import org.apache.logging.log4j.message.Message;
35
36
37
38
39 @Plugin(name = "DynamicThresholdFilter", category = Node.CATEGORY, elementType = Filter.ELEMENT_TYPE, printObject = true)
40 public final class DynamicThresholdFilter extends AbstractFilter {
41
42 private static final long serialVersionUID = 1L;
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53 @PluginFactory
54 public static DynamicThresholdFilter createFilter(
55 @PluginAttribute("key") final String key,
56 @PluginElement("Pairs") final KeyValuePair[] pairs,
57 @PluginAttribute("defaultThreshold") final Level defaultThreshold,
58 @PluginAttribute("onMatch") final Result onMatch,
59 @PluginAttribute("onMismatch") final Result onMismatch) {
60 final Map<String, Level> map = new HashMap<String, Level>();
61 for (final KeyValuePair pair : pairs) {
62 map.put(pair.getKey(), Level.toLevel(pair.getValue()));
63 }
64 final Level level = defaultThreshold == null ? Level.ERROR : defaultThreshold;
65 return new DynamicThresholdFilter(key, map, level, onMatch, onMismatch);
66 }
67 private Level defaultThreshold = Level.ERROR;
68 private final String key;
69
70 private Map<String, Level> levelMap = new HashMap<String, Level>();
71
72 private DynamicThresholdFilter(final String key, final Map<String, Level> pairs, final Level defaultLevel,
73 final Result onMatch, final Result onMismatch) {
74 super(onMatch, onMismatch);
75 if (key == null) {
76 throw new NullPointerException("key cannot be null");
77 }
78 this.key = key;
79 this.levelMap = pairs;
80 this.defaultThreshold = defaultLevel;
81 }
82
83 @Override
84 public boolean equals(final Object obj) {
85 if (this == obj) {
86 return true;
87 }
88 if (!super.equalsImpl(obj)) {
89 return false;
90 }
91 if (getClass() != obj.getClass()) {
92 return false;
93 }
94 final DynamicThresholdFilter other = (DynamicThresholdFilter) obj;
95 if (defaultThreshold == null) {
96 if (other.defaultThreshold != null) {
97 return false;
98 }
99 } else if (!defaultThreshold.equals(other.defaultThreshold)) {
100 return false;
101 }
102 if (key == null) {
103 if (other.key != null) {
104 return false;
105 }
106 } else if (!key.equals(other.key)) {
107 return false;
108 }
109 if (levelMap == null) {
110 if (other.levelMap != null) {
111 return false;
112 }
113 } else if (!levelMap.equals(other.levelMap)) {
114 return false;
115 }
116 return true;
117 }
118
119 private Result filter(final Level level) {
120 final Object value = ThreadContext.get(key);
121 if (value != null) {
122 Level ctxLevel = levelMap.get(value);
123 if (ctxLevel == null) {
124 ctxLevel = defaultThreshold;
125 }
126 return level.isMoreSpecificThan(ctxLevel) ? onMatch : onMismatch;
127 }
128 return Result.NEUTRAL;
129
130 }
131
132 @Override
133 public Result filter(final LogEvent event) {
134 return filter(event.getLevel());
135 }
136
137 @Override
138 public Result filter(final Logger logger, final Level level, final Marker marker, final Message msg,
139 final Throwable t) {
140 return filter(level);
141 }
142
143 @Override
144 public Result filter(final Logger logger, final Level level, final Marker marker, final Object msg,
145 final Throwable t) {
146 return filter(level);
147 }
148
149 @Override
150 public Result filter(final Logger logger, final Level level, final Marker marker, final String msg,
151 final Object... params) {
152 return filter(level);
153 }
154
155 public String getKey() {
156 return this.key;
157 }
158
159 public Map<String, Level> getLevelMap() {
160 return levelMap;
161 }
162
163 @Override
164 public int hashCode() {
165 final int prime = 31;
166 int result = super.hashCodeImpl();
167 result = prime * result + ((defaultThreshold == null) ? 0 : defaultThreshold.hashCode());
168 result = prime * result + ((key == null) ? 0 : key.hashCode());
169 result = prime * result + ((levelMap == null) ? 0 : levelMap.hashCode());
170 return result;
171 }
172
173 @Override
174 public String toString() {
175 final StringBuilder sb = new StringBuilder();
176 sb.append("key=").append(key);
177 sb.append(", default=").append(defaultThreshold);
178 if (levelMap.size() > 0) {
179 sb.append('{');
180 boolean first = true;
181 for (final Map.Entry<String, Level> entry : levelMap.entrySet()) {
182 if (!first) {
183 sb.append(", ");
184 first = false;
185 }
186 sb.append(entry.getKey()).append('=').append(entry.getValue());
187 }
188 sb.append('}');
189 }
190 return sb.toString();
191 }
192 }