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17 package org.apache.logging.log4j.core.selector;
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19 import java.net.URI;
20 import java.util.ArrayList;
21 import java.util.Collections;
22 import java.util.List;
23 import java.util.Map;
24 import java.util.concurrent.ConcurrentHashMap;
25 import java.util.concurrent.ConcurrentMap;
26 import javax.naming.NamingException;
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28 import org.apache.logging.log4j.core.LoggerContext;
29 import org.apache.logging.log4j.core.impl.ContextAnchor;
30 import org.apache.logging.log4j.core.net.JndiManager;
31 import org.apache.logging.log4j.core.util.Constants;
32 import org.apache.logging.log4j.status.StatusLogger;
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86 public class JndiContextSelector implements NamedContextSelector {
87
88 private static final LoggerContext CONTEXT = new LoggerContext("Default");
89
90 private static final ConcurrentMap<String, LoggerContext> CONTEXT_MAP =
91 new ConcurrentHashMap<>();
92
93 private static final StatusLogger LOGGER = StatusLogger.getLogger();
94
95 @Override
96 public LoggerContext getContext(final String fqcn, final ClassLoader loader, final boolean currentContext) {
97 return getContext(fqcn, loader, currentContext, null);
98 }
99
100 @Override
101 public LoggerContext getContext(final String fqcn, final ClassLoader loader, final boolean currentContext,
102 final URI configLocation) {
103
104 final LoggerContext lc = ContextAnchor.THREAD_CONTEXT.get();
105 if (lc != null) {
106 return lc;
107 }
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109 String loggingContextName = null;
110
111 try (final JndiManager jndiManager = JndiManager.getDefaultManager()) {
112 loggingContextName = jndiManager.lookup(Constants.JNDI_CONTEXT_NAME);
113 } catch (final NamingException ne) {
114 LOGGER.error("Unable to lookup {}", Constants.JNDI_CONTEXT_NAME, ne);
115 }
116
117 return loggingContextName == null ? CONTEXT : locateContext(loggingContextName, null, configLocation);
118 }
119
120 @Override
121 public LoggerContext locateContext(final String name, final Object externalContext, final URI configLocation) {
122 if (name == null) {
123 LOGGER.error("A context name is required to locate a LoggerContext");
124 return null;
125 }
126 if (!CONTEXT_MAP.containsKey(name)) {
127 final LoggerContext ctx = new LoggerContext(name, externalContext, configLocation);
128 CONTEXT_MAP.putIfAbsent(name, ctx);
129 }
130 return CONTEXT_MAP.get(name);
131 }
132
133 @Override
134 public void removeContext(final LoggerContext context) {
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136 for (final Map.Entry<String, LoggerContext> entry : CONTEXT_MAP.entrySet()) {
137 if (entry.getValue().equals(context)) {
138 CONTEXT_MAP.remove(entry.getKey());
139 }
140 }
141 }
142
143 @Override
144 public LoggerContext removeContext(final String name) {
145 return CONTEXT_MAP.remove(name);
146 }
147
148 @Override
149 public List<LoggerContext> getLoggerContexts() {
150 return Collections.unmodifiableList(new ArrayList<>(CONTEXT_MAP.values()));
151 }
152
153 }