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REPORT-18993 log4j冲突问题处理，这个在9.0是处理过的，后来jinbokai重新拉了一份源码覆盖掉了，重新提交下

bugfix/10.0
zack 5 years ago
parent
c5991d2cd7
commit
aea547bf7f
1 changed files with 140 additions and 200 deletions
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  1. 340
      fine-log4j/src/com/fr/third/apache/log4j/LogManager.java

340
fine-log4j/src/com/fr/third/apache/log4j/LogManager.java
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@ -17,9 +17,7 @@
package com.fr.third.apache.log4j; package com.fr.third.apache.log4j;
import com.fr.third.apache.log4j.helpers.Loader;
import com.fr.third.apache.log4j.helpers.LogLog; import com.fr.third.apache.log4j.helpers.LogLog;
import com.fr.third.apache.log4j.helpers.OptionConverter;
import com.fr.third.apache.log4j.spi.DefaultRepositorySelector; import com.fr.third.apache.log4j.spi.DefaultRepositorySelector;
import com.fr.third.apache.log4j.spi.LoggerFactory; import com.fr.third.apache.log4j.spi.LoggerFactory;
import com.fr.third.apache.log4j.spi.LoggerRepository; import com.fr.third.apache.log4j.spi.LoggerRepository;
@ -27,13 +25,9 @@ import com.fr.third.apache.log4j.spi.NOPLoggerRepository;
import com.fr.third.apache.log4j.spi.RepositorySelector; import com.fr.third.apache.log4j.spi.RepositorySelector;
import com.fr.third.apache.log4j.spi.RootLogger; import com.fr.third.apache.log4j.spi.RootLogger;
import java.net.URL;
import java.net.MalformedURLException;
import java.util.Enumeration;
import java.io.StringWriter;
import java.io.PrintWriter; import java.io.PrintWriter;
import java.io.StringWriter;
import java.util.Enumeration;
/** /**
* Use the <code>LogManager</code> class to retreive {@link Logger} * Use the <code>LogManager</code> class to retreive {@link Logger}
@ -46,132 +40,79 @@ import java.io.PrintWriter;
* @author Ceki G&uuml;lc&uuml; */ * @author Ceki G&uuml;lc&uuml; */
public class LogManager { public class LogManager {
/** /**
* @deprecated This variable is for internal use only. It will * @deprecated This variable is for internal use only. It will
* become package protected in future versions. * become package protected in future versions.
* */ * */
static public final String DEFAULT_CONFIGURATION_FILE = "log4j.properties"; static public final String DEFAULT_CONFIGURATION_FILE = "log4j.properties";
static final String DEFAULT_XML_CONFIGURATION_FILE = "log4j.xml"; static final String DEFAULT_XML_CONFIGURATION_FILE = "log4j.xml";
/** /**
* @deprecated This variable is for internal use only. It will * @deprecated This variable is for internal use only. It will
* become private in future versions. * become private in future versions.
* */ * */
static final public String DEFAULT_CONFIGURATION_KEY="log4j.configuration"; static final public String DEFAULT_CONFIGURATION_KEY="log4j.configuration";
/** /**
* @deprecated This variable is for internal use only. It will * @deprecated This variable is for internal use only. It will
* become private in future versions. * become private in future versions.
* */ * */
static final public String CONFIGURATOR_CLASS_KEY="log4j.configuratorClass"; static final public String CONFIGURATOR_CLASS_KEY="log4j.configuratorClass";
/** /**
* @deprecated This variable is for internal use only. It will * @deprecated This variable is for internal use only. It will
* become private in future versions. * become private in future versions.
*/ */
public static final String DEFAULT_INIT_OVERRIDE_KEY = public static final String DEFAULT_INIT_OVERRIDE_KEY =
"log4j.defaultInitOverride"; "log4j.defaultInitOverride";
static private Object guard = null; static private Object guard = null;
static private RepositorySelector repositorySelector; static private RepositorySelector repositorySelector;
static { static {
// By default we use a DefaultRepositorySelector which always returns 'h'. // By default we use a DefaultRepositorySelector which always returns 'h'.
Hierarchy h = new Hierarchy(new RootLogger((Level) Level.DEBUG)); Hierarchy h = new Hierarchy(new RootLogger((Level) Level.DEBUG));
repositorySelector = new DefaultRepositorySelector(h); repositorySelector = new DefaultRepositorySelector(h);
/** Search for the properties file log4j.properties in the CLASSPATH. */
String override = OptionConverter.getSystemProperty(DEFAULT_INIT_OVERRIDE_KEY, }
null);
/**
// if there is no default init override, then get the resource
// specified by the user or the default config file.
if(override == null || "false".equalsIgnoreCase(override)) {
String configurationOptionStr = OptionConverter.getSystemProperty(
DEFAULT_CONFIGURATION_KEY,
null);
String configuratorClassName = OptionConverter.getSystemProperty(
CONFIGURATOR_CLASS_KEY,
null);
URL url = null;
// if the user has not specified the log4j.configuration
// property, we search first for the file "log4j.xml" and then
// "log4j.properties"
if(configurationOptionStr == null) {
url = Loader.getResource(DEFAULT_XML_CONFIGURATION_FILE);
if(url == null) {
url = Loader.getResource(DEFAULT_CONFIGURATION_FILE);
}
} else {
try {
url = new URL(configurationOptionStr);
} catch (MalformedURLException ex) {
// so, resource is not a URL:
// attempt to get the resource from the class path
url = Loader.getResource(configurationOptionStr);
}
}
// If we have a non-null url, then delegate the rest of the
// configuration to the OptionConverter.selectAndConfigure
// method.
if(url != null) {
LogLog.debug("Using URL ["+url+"] for automatic log4j configuration.");
try {
OptionConverter.selectAndConfigure(url, configuratorClassName,
LogManager.getLoggerRepository());
} catch (NoClassDefFoundError e) {
LogLog.warn("Error during default initialization", e);
}
} else {
LogLog.debug("Could not find resource: ["+configurationOptionStr+"].");
}
} else {
LogLog.debug("Default initialization of overridden by " +
DEFAULT_INIT_OVERRIDE_KEY + "property.");
}
}
/**
Sets <code>LoggerFactory</code> but only if the correct Sets <code>LoggerFactory</code> but only if the correct
<em>guard</em> is passed as parameter. <em>guard</em> is passed as parameter.
<p>Initally the guard is null. If the guard is <p>Initally the guard is null. If the guard is
<code>null</code>, then invoking this method sets the logger <code>null</code>, then invoking this method sets the logger
factory and the guard. Following invocations will throw a {@link factory and the guard. Following invocations will throw a {@link
IllegalArgumentException}, unless the previously set IllegalArgumentException}, unless the previously set
<code>guard</code> is passed as the second parameter. <code>guard</code> is passed as the second parameter.
<p>This allows a high-level component to set the {@link <p>This allows a high-level component to set the {@link
RepositorySelector} used by the <code>LogManager</code>. RepositorySelector} used by the <code>LogManager</code>.
<p>For example, when tomcat starts it will be able to install its <p>For example, when tomcat starts it will be able to install its
own repository selector. However, if and when Tomcat is embedded own repository selector. However, if and when Tomcat is embedded
within JBoss, then JBoss will install its own repository selector within JBoss, then JBoss will install its own repository selector
and Tomcat will use the repository selector set by its container, and Tomcat will use the repository selector set by its container,
JBoss. */ JBoss. */
static static
public public
void setRepositorySelector(RepositorySelector selector, Object guard) void setRepositorySelector(RepositorySelector selector, Object guard)
throws IllegalArgumentException { throws IllegalArgumentException {
if((LogManager.guard != null) && (LogManager.guard != guard)) { if((LogManager.guard != null) && (LogManager.guard != guard)) {
throw new IllegalArgumentException( throw new IllegalArgumentException(
"Attempted to reset the LoggerFactory without possessing the guard."); "Attempted to reset the LoggerFactory without possessing the guard.");
} }
if(selector == null) { if(selector == null) {
throw new IllegalArgumentException("RepositorySelector must be non-null."); throw new IllegalArgumentException("RepositorySelector must be non-null.");
} }
LogManager.guard = guard; LogManager.guard = guard;
LogManager.repositorySelector = selector; LogManager.repositorySelector = selector;
} }
/** /**
@ -183,94 +124,93 @@ public class LogManager {
* @param ex exception used to determine calling stack. * @param ex exception used to determine calling stack.
* @return true if calling stack is recognized as likely safe. * @return true if calling stack is recognized as likely safe.
*/ */
private static boolean isLikelySafeScenario(final Exception ex) { private static boolean isLikelySafeScenario(final Exception ex) {
StringWriter stringWriter = new StringWriter(); StringWriter stringWriter = new StringWriter();
ex.printStackTrace(new PrintWriter(stringWriter)); ex.printStackTrace(new PrintWriter(stringWriter));
String msg = stringWriter.toString(); String msg = stringWriter.toString();
return msg.indexOf("org.apache.catalina.loader.WebappClassLoader.stop") != -1; return msg.indexOf("org.apache.catalina.loader.WebappClassLoader.stop") != -1;
} }
static static
public public
LoggerRepository getLoggerRepository() { LoggerRepository getLoggerRepository() {
if (repositorySelector == null) { if (repositorySelector == null) {
repositorySelector = new DefaultRepositorySelector(new NOPLoggerRepository()); repositorySelector = new DefaultRepositorySelector(new NOPLoggerRepository());
guard = null; guard = null;
Exception ex = new IllegalStateException("Class invariant violation"); Exception ex = new IllegalStateException("Class invariant violation");
String msg = String msg =
"log4j called after unloading, see http://logging.apache.org/log4j/1.2/faq.html#unload."; "log4j called after unloading, see http://logging.apache.org/log4j/1.2/faq.html#unload.";
if (isLikelySafeScenario(ex)) { if (isLikelySafeScenario(ex)) {
LogLog.debug(msg, ex); LogLog.debug(msg, ex);
} else { } else {
LogLog.error(msg, ex); LogLog.error(msg, ex);
}
} }
return repositorySelector.getLoggerRepository();
} }
return repositorySelector.getLoggerRepository();
}
/** /**
Retrieve the appropriate root logger. Retrieve the appropriate root logger.
*/ */
public public
static static
Logger getRootLogger() { Logger getRootLogger() {
// Delegate the actual manufacturing of the logger to the logger repository. // Delegate the actual manufacturing of the logger to the logger repository.
return getLoggerRepository().getRootLogger(); return getLoggerRepository().getRootLogger();
} }
/** /**
Retrieve the appropriate {@link Logger} instance. Retrieve the appropriate {@link Logger} instance.
*/ */
public public
static static
Logger getLogger(final String name) { Logger getLogger(final String name) {
// Delegate the actual manufacturing of the logger to the logger repository. // Delegate the actual manufacturing of the logger to the logger repository.
return getLoggerRepository().getLogger(name); return getLoggerRepository().getLogger(name);
} }
/** /**
Retrieve the appropriate {@link Logger} instance. Retrieve the appropriate {@link Logger} instance.
*/ */
public public
static static
Logger getLogger(final Class clazz) { Logger getLogger(final Class clazz) {
// Delegate the actual manufacturing of the logger to the logger repository. // Delegate the actual manufacturing of the logger to the logger repository.
return getLoggerRepository().getLogger(clazz.getName()); return getLoggerRepository().getLogger(clazz.getName());
} }
/** /**
Retrieve the appropriate {@link Logger} instance. Retrieve the appropriate {@link Logger} instance.
*/ */
public public
static static
Logger getLogger(final String name, final LoggerFactory factory) { Logger getLogger(final String name, final LoggerFactory factory) {
// Delegate the actual manufacturing of the logger to the logger repository. // Delegate the actual manufacturing of the logger to the logger repository.
return getLoggerRepository().getLogger(name, factory); return getLoggerRepository().getLogger(name, factory);
} }
public public
static static
Logger exists(final String name) { Logger exists(final String name) {
return getLoggerRepository().exists(name); return getLoggerRepository().exists(name);
} }
public public
static static
Enumeration getCurrentLoggers() { Enumeration getCurrentLoggers() {
return getLoggerRepository().getCurrentLoggers(); return getLoggerRepository().getCurrentLoggers();
} }
public
static
void shutdown() {
getLoggerRepository().shutdown();
}
public
static
void resetConfiguration() {
getLoggerRepository().resetConfiguration();
}
}
public
static
void shutdown() {
getLoggerRepository().shutdown();
}
public
static
void resetConfiguration() {
getLoggerRepository().resetConfiguration();
}
}

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