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Don't catch Throwable in InternalLoggerFactory (#10866)

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Motivation:

We shouldnt catch Throwable in InternalLoggerFactory as this may hide OOME etc.

Modifications:

Only catch LinkageError and Exception

Result:

Fixes https://github.com/netty/netty/issues/10857
This commit is contained in:
Norman Maurer 2020-12-16 08:45:36 +01:00
parent d6121a2ecb
commit 7843d4e2e5
1 changed files with 59 additions and 17 deletions
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76
common/src/main/java/io/netty/util/internal/logging/InternalLoggerFactory.java
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@ -39,24 +39,66 @@ public abstract class InternalLoggerFactory {
@SuppressWarnings("UnusedCatchParameter")
private static InternalLoggerFactory newDefaultFactory(String name) {
InternalLoggerFactory f;
try {
f = new Slf4JLoggerFactory(true);
f.newInstance(name).debug("Using SLF4J as the default logging framework");
} catch (Throwable ignore1) {
try {
f = Log4J2LoggerFactory.INSTANCE;
f.newInstance(name).debug("Using Log4J2 as the default logging framework");
} catch (Throwable ignore2) {
try {
f = Log4JLoggerFactory.INSTANCE;
f.newInstance(name).debug("Using Log4J as the default logging framework");
} catch (Throwable ignore3) {
f = JdkLoggerFactory.INSTANCE;
f.newInstance(name).debug("Using java.util.logging as the default logging framework");
}
}
InternalLoggerFactory f = useSlf4JLoggerFactory(name);
if (f != null) {
return f;
}
f = useLog4J2LoggerFactory(name);
if (f != null) {
return f;
}
f = useLog4JLoggerFactory(name);
if (f != null) {
return f;
}
return useJdkLoggerFactory(name);
}
private static InternalLoggerFactory useSlf4JLoggerFactory(String name) {
try {
InternalLoggerFactory f = new Slf4JLoggerFactory(true);
f.newInstance(name).debug("Using SLF4J as the default logging framework");
return f;
} catch (LinkageError ignore) {
return null;
} catch (Exception ignore) {
// We catch Exception and not ReflectiveOperationException as we still support java 6
return null;
}
}
private static InternalLoggerFactory useLog4J2LoggerFactory(String name) {
try {
InternalLoggerFactory f = Log4J2LoggerFactory.INSTANCE;
f.newInstance(name).debug("Using Log4J2 as the default logging framework");
return f;
} catch (LinkageError ignore) {
return null;
} catch (Exception ignore) {
// We catch Exception and not ReflectiveOperationException as we still support java 6
return null;
}
}
private static InternalLoggerFactory useLog4JLoggerFactory(String name) {
try {
InternalLoggerFactory f = Log4JLoggerFactory.INSTANCE;
f.newInstance(name).debug("Using Log4J as the default logging framework");
return f;
} catch (LinkageError ignore) {
return null;
} catch (Exception ignore) {
// We catch Exception and not ReflectiveOperationException as we still support java 6
return null;
}
}
private static InternalLoggerFactory useJdkLoggerFactory(String name) {
InternalLoggerFactory f = JdkLoggerFactory.INSTANCE;
f.newInstance(name).debug("Using java.util.logging as the default logging framework");
return f;
}