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Posted to notifications@logging.apache.org by "slinkydeveloper (via GitHub)" <gi...@apache.org> on 2023/12/15 11:50:23 UTC
[I] Using `Map.of` in a `ContextDataProvider` implementation throws UOE (logging-log4j2)
slinkydeveloper opened a new issue, #2098:
URL: https://github.com/apache/logging-log4j2/issues/2098
## Description
I'm using logj2 with a custom `ContextDataProvider`, and then using the [aws lambda appender](https://docs.aws.amazon.com/lambda/latest/dg/java-logging.html#java-logging-log4j2). My `ContextDataProvider` implementation uses `Map.of` methods from JDK to create cheap immutable maps, but apparently that doesn't work and throws UOE.
In the stacktrace it's shown that a method down the stack invokes `ImmutableCollections.AbstractImmutableMap::clear`, which throws UOE. Interesting enough, in many online examples they use `Collections.emptyMap()` for the empty map, which doesn't throw UOE on `clear`.
What puzzles me though is that I wasn't able to reproduce this issue with the log4j2-core console appender. Is the amazon appender doing something strange, or is this a bug of log4j2-core?
## Configuration
**Version:** 2.22.0
**Operating system:** Linux
**JDK:** 21 (amazon)
## Logs
```
2023-12-15T11:26:15.337000+00:00 WARN StatusConsoleListener org.apache.logging.log4j.spi.AbstractLogger caught java.lang.UnsupportedOperationException logging ReusableSimpleMessage: Incremented counter!
2023-12-15T11:26:15.338000+00:00 java.lang.UnsupportedOperationException
2023-12-15T11:26:15.338000+00:00 at java.base/java.util.ImmutableCollections.uoe(Unknown Source)
2023-12-15T11:26:15.338000+00:00 at java.base/java.util.ImmutableCollections$AbstractImmutableMap.clear(Unknown Source)
2023-12-15T11:26:15.338000+00:00 at org.apache.logging.log4j.core.impl.JdkMapAdapterStringMap.clear(JdkMapAdapterStringMap.java:122)
2023-12-15T11:26:15.338000+00:00 at org.apache.logging.log4j.core.impl.MutableLogEvent.clear(MutableLogEvent.java:143)
2023-12-15T11:26:15.338000+00:00 at org.apache.logging.log4j.core.impl.ReusableLogEventFactory.release(ReusableLogEventFactory.java:141)
2023-12-15T11:26:15.338000+00:00 at org.apache.logging.log4j.core.config.LoggerConfig.log(LoggerConfig.java:578)
2023-12-15T11:26:15.338000+00:00 at org.apache.logging.log4j.core.config.AwaitCompletionReliabilityStrategy.log(AwaitCompletionReliabilityStrategy.java:92)
2023-12-15T11:26:15.338000+00:00 at org.apache.logging.log4j.core.Logger.log(Logger.java:169)
2023-12-15T11:26:15.338000+00:00 at org.apache.logging.log4j.spi.AbstractLogger.tryLogMessage(AbstractLogger.java:2933)
2023-12-15T11:26:15.338000+00:00 at org.apache.logging.log4j.spi.AbstractLogger.logMessageTrackRecursion(AbstractLogger.java:2886)
2023-12-15T11:26:15.338000+00:00 at org.apache.logging.log4j.spi.AbstractLogger.logMessageSafely(AbstractLogger.java:2868)
2023-12-15T11:26:15.338000+00:00 at org.apache.logging.log4j.spi.AbstractLogger.logMessage(AbstractLogger.java:2647)
2023-12-15T11:26:15.338000+00:00 at org.apache.logging.log4j.spi.AbstractLogger.logIfEnabled(AbstractLogger.java:2594)
2023-12-15T11:26:15.339000+00:00 at org.apache.logging.log4j.spi.AbstractLogger.info(AbstractLogger.java:1597)
2023-12-15T11:26:15.339000+00:00 at dev.restate.sdk.examples.Greeter.greet(Greeter.kt:31)
[... My application stacktrace ...]
2023-12-15T11:26:15.340000+00:00 at dev.restate.sdk.lambda.BaseRestateLambdaHandler.handleRequest(BaseRestateLambdaHandler.java:28)
2023-12-15T11:26:15.340000+00:00 at com.amazonaws.services.lambda.runtime.api.client.EventHandlerLoader$PojoHandlerAsStreamHandler.handleRequest(EventHandlerLoader.java:202)
2023-12-15T11:26:15.340000+00:00 at com.amazonaws.services.lambda.runtime.api.client.EventHandlerLoader$2.call(EventHandlerLoader.java:905)
2023-12-15T11:26:15.340000+00:00 at com.amazonaws.services.lambda.runtime.api.client.AWSLambda.startRuntime(AWSLambda.java:245)
2023-12-15T11:26:15.340000+00:00 at com.amazonaws.services.lambda.runtime.api.client.AWSLambda.startRuntime(AWSLambda.java:197)
2023-12-15T11:26:15.340000+00:00 at com.amazonaws.services.lambda.runtime.api.client.AWSLambda.main(AWSLambda.java:187)
```
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Re: [I] Using `Map.of` in a `ContextDataProvider` implementation throws UOE (logging-log4j2)
Posted by "ppkarwasz (via GitHub)" <gi...@apache.org>.
ppkarwasz closed issue #2098: Using `Map.of` in a `ContextDataProvider` implementation throws UOE
URL: https://github.com/apache/logging-log4j2/issues/2098
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Re: [I] Using `Map.of` in a `ContextDataProvider` implementation throws UOE (logging-log4j2)
Posted by "ppkarwasz (via GitHub)" <gi...@apache.org>.
ppkarwasz commented on issue #2098:
URL: https://github.com/apache/logging-log4j2/issues/2098#issuecomment-1858580112
@slinkydeveloper,
Thanks for reporting this issue. Our Java `Map` to [`StringMap`](https://logging.apache.org/log4j/2.x/javadoc/log4j-api/org/apache/logging/log4j/util/StringMap.html) didn't check if the wrapped map is immutable and didn't mark it as `frozen`.
This should be fixed in the next release.
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Re: [I] Using `Map.of` in a `ContextDataProvider` implementation throws UOE (logging-log4j2)
Posted by "slinkydeveloper (via GitHub)" <gi...@apache.org>.
slinkydeveloper commented on issue #2098:
URL: https://github.com/apache/logging-log4j2/issues/2098#issuecomment-1857969826
FYI the aws lambda appender has probably nothing to do with this issue anyway, as i've found out here https://github.com/apache/logging-log4j2/issues/2099
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