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17 package org.apache.logging.log4j.jul;
18
19 import java.util.Collections;
20 import java.util.Enumeration;
21 import java.util.logging.Logger;
22
23 import org.apache.logging.log4j.LoggingException;
24 import org.apache.logging.log4j.status.StatusLogger;
25 import org.apache.logging.log4j.util.LoaderUtil;
26 import org.apache.logging.log4j.util.PropertiesUtil;
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40 public class LogManager extends java.util.logging.LogManager {
41
42 private static final org.apache.logging.log4j.Logger LOGGER = StatusLogger.getLogger();
43 private final AbstractLoggerAdapter loggerAdapter;
44
45 public LogManager() {
46 super();
47 AbstractLoggerAdapter adapter = null;
48 final String overrideAdaptorClassName =
49 PropertiesUtil.getProperties().getStringProperty(Constants.LOGGER_ADAPTOR_PROPERTY);
50 if (overrideAdaptorClassName != null) {
51 try {
52 LOGGER.info("Trying to use LoggerAdaptor [{}] specified by Log4j property.", overrideAdaptorClassName);
53 adapter = LoaderUtil.newCheckedInstanceOf(overrideAdaptorClassName, AbstractLoggerAdapter.class);
54 } catch (final Exception e) {
55 LOGGER.error("Specified LoggerAdapter [{}] is incompatible.", overrideAdaptorClassName, e);
56 }
57 }
58 if (adapter == null) {
59
60 String adapterClassName;
61 try {
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63 LoaderUtil.loadClass(Constants.CORE_LOGGER_CLASS_NAME);
64 adapterClassName = Constants.CORE_LOGGER_ADAPTER_CLASS_NAME;
65 } catch (final ClassNotFoundException ignored) {
66 adapterClassName = Constants.API_LOGGER_ADAPTER_CLASS_NAME;
67 }
68 LOGGER.debug("Attempting to use {}", adapterClassName);
69 try {
70 adapter = LoaderUtil.newCheckedInstanceOf(adapterClassName, AbstractLoggerAdapter.class);
71 } catch (final Exception e) {
72 throw LOGGER.throwing(new LoggingException(e));
73 }
74 }
75 loggerAdapter = adapter;
76 LOGGER.info("Registered Log4j as the java.util.logging.LogManager.");
77 }
78
79 @Override
80 public boolean addLogger(final Logger logger) {
81
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83 return false;
84 }
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86 @Override
87 public Logger getLogger(final String name) {
88 LOGGER.trace("Call to LogManager.getLogger({})", name);
89 return loggerAdapter.getLogger(name);
90 }
91
92 @Override
93 public Enumeration<String> getLoggerNames() {
94 return Collections.enumeration(loggerAdapter.getLoggersInContext(loggerAdapter.getContext()).keySet());
95 }
96
97 }