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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<String, LoggerContext>();
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) {
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104 final LoggerContext lc = ContextAnchor.THREAD_CONTEXT.get();
105 if (lc != null) {
106 return lc;
107 }
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109 String loggingContextName = null;
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111 final JndiManager jndiManager = JndiManager.getDefaultManager();
112 try {
113 loggingContextName = jndiManager.lookup(Constants.JNDI_CONTEXT_NAME);
114 } catch (final NamingException ne) {
115 LOGGER.error("Unable to lookup {}", Constants.JNDI_CONTEXT_NAME, ne);
116 } finally {
117 jndiManager.release();
118 }
119
120 return loggingContextName == null ? CONTEXT : locateContext(loggingContextName, null, configLocation);
121 }
122
123 @Override
124 public LoggerContext locateContext(final String name, final Object externalContext, final URI configLocation) {
125 if (name == null) {
126 LOGGER.error("A context name is required to locate a LoggerContext");
127 return null;
128 }
129 if (!CONTEXT_MAP.containsKey(name)) {
130 final LoggerContext ctx = new LoggerContext(name, externalContext, configLocation);
131 CONTEXT_MAP.putIfAbsent(name, ctx);
132 }
133 return CONTEXT_MAP.get(name);
134 }
135
136 @Override
137 public void removeContext(final LoggerContext context) {
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139 for (final Map.Entry<String, LoggerContext> entry : CONTEXT_MAP.entrySet()) {
140 if (entry.getValue().equals(context)) {
141 CONTEXT_MAP.remove(entry.getKey());
142 }
143 }
144 }
145
146 @Override
147 public LoggerContext removeContext(final String name) {
148 return CONTEXT_MAP.remove(name);
149 }
150
151 @Override
152 public List<LoggerContext> getLoggerContexts() {
153 final List<LoggerContext> list = new ArrayList<LoggerContext>(CONTEXT_MAP.values());
154 return Collections.unmodifiableList(list);
155 }
156
157 }