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17 package org.apache.logging.log4j.core.lookup;
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19 import java.util.Objects;
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21 import javax.naming.NamingException;
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23 import org.apache.logging.log4j.Logger;
24 import org.apache.logging.log4j.Marker;
25 import org.apache.logging.log4j.MarkerManager;
26 import org.apache.logging.log4j.core.LogEvent;
27 import org.apache.logging.log4j.core.config.plugins.Plugin;
28 import org.apache.logging.log4j.core.net.JndiManager;
29 import org.apache.logging.log4j.status.StatusLogger;
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34 @Plugin(name = "jndi", category = StrLookup.CATEGORY)
35 public class JndiLookup extends AbstractLookup {
36
37 private static final Logger LOGGER = StatusLogger.getLogger();
38 private static final Marker LOOKUP = MarkerManager.getMarker("LOOKUP");
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41 static final String CONTAINER_JNDI_RESOURCE_PATH_PREFIX = "java:comp/env/";
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49 @Override
50 public String lookup(final LogEvent event, final String key) {
51 if (key == null) {
52 return null;
53 }
54 final String jndiName = convertJndiName(key);
55 try (final JndiManager jndiManager = JndiManager.getDefaultManager()) {
56 return Objects.toString(jndiManager.lookup(jndiName), null);
57 } catch (final NamingException e) {
58 LOGGER.warn(LOOKUP, "Error looking up JNDI resource [{}].", jndiName, e);
59 return null;
60 }
61 }
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70 private String convertJndiName(final String jndiName) {
71 if (!jndiName.startsWith(CONTAINER_JNDI_RESOURCE_PATH_PREFIX) && jndiName.indexOf(':') == -1) {
72 return CONTAINER_JNDI_RESOURCE_PATH_PREFIX + jndiName;
73 }
74 return jndiName;
75 }
76 }