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17 package org.apache.logging.log4j.core.impl;
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19 import java.net.URI;
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21 import org.apache.logging.log4j.core.LoggerContext;
22 import org.apache.logging.log4j.core.helpers.Constants;
23 import org.apache.logging.log4j.core.helpers.Loader;
24 import org.apache.logging.log4j.core.jmx.Server;
25 import org.apache.logging.log4j.core.selector.ClassLoaderContextSelector;
26 import org.apache.logging.log4j.core.selector.ContextSelector;
27 import org.apache.logging.log4j.spi.LoggerContextFactory;
28 import org.apache.logging.log4j.status.StatusLogger;
29 import org.apache.logging.log4j.util.PropertiesUtil;
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34 public class Log4jContextFactory implements LoggerContextFactory {
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36 private static final StatusLogger LOGGER = StatusLogger.getLogger();
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38 private ContextSelector selector;
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43 public Log4jContextFactory() {
44 final String sel = PropertiesUtil.getProperties().getStringProperty(Constants.LOG4J_CONTEXT_SELECTOR);
45 if (sel != null) {
46 try {
47 final Class<?> clazz = Loader.loadClass(sel);
48 if (clazz != null && ContextSelector.class.isAssignableFrom(clazz)) {
49 selector = (ContextSelector) clazz.newInstance();
50 }
51 } catch (final Exception ex) {
52 LOGGER.error("Unable to create context " + sel, ex);
53 }
54 }
55 if (selector == null) {
56 selector = new ClassLoaderContextSelector();
57 }
58 try {
59 Server.registerMBeans(selector);
60 } catch (Exception ex) {
61 LOGGER.error("Could not start JMX", ex);
62 }
63 }
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69 public ContextSelector getSelector() {
70 return selector;
71 }
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81 public LoggerContext getContext(final String fqcn, final ClassLoader loader, final boolean currentContext) {
82 final LoggerContext ctx = selector.getContext(fqcn, loader, currentContext);
83 if (ctx.getStatus() == LoggerContext.Status.INITIALIZED) {
84 ctx.start();
85 }
86 return ctx;
87 }
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98 public LoggerContext getContext(final String fqcn, final ClassLoader loader, final boolean currentContext,
99 URI configLocation) {
100 final LoggerContext ctx = selector.getContext(fqcn, loader, currentContext, configLocation);
101 if (ctx.getStatus() == LoggerContext.Status.INITIALIZED) {
102 ctx.start();
103 }
104 return ctx;
105 }
106 }