smolnar82 opened a new pull request, #827:
URL: https://github.com/apache/knox/pull/827
## What changes were proposed in this pull request?
This is a very small, but even more imprtant change because it helps us a
lof during the troubleshooting of service discovery or simple descriptor
handler issues: related error stack traces are displayed on `INFO` level.
## How was this patch tested?
Manually tested:
```
2023-12-15 16:57:35,494 ERROR knox.gateway
(DescriptorsMonitor.java:onFileChange(123)) - An error occurred while
processing dt.json : java.lang.IllegalArgumentException: Unresolved provider
configuration reference: kerberos-providers
java.lang.IllegalArgumentException: Unresolved provider configuration
reference: kerberos-providers
at
org.apache.knox.gateway.topology.simple.SimpleDescriptorHandler.handleProviderConfiguration(SimpleDescriptorHandler.java:266)
~[gateway-topology-simple-2.1.0-SNAPSHOT.jar:2.1.0-SNAPSHOT]
at
org.apache.knox.gateway.topology.simple.SimpleDescriptorHandler.generateTopology(SimpleDescriptorHandler.java:416)
~[gateway-topology-simple-2.1.0-SNAPSHOT.jar:2.1.0-SNAPSHOT]
at
org.apache.knox.gateway.topology.simple.SimpleDescriptorHandler.handle(SimpleDescriptorHandler.java:199)
~[gateway-topology-simple-2.1.0-SNAPSHOT.jar:2.1.0-SNAPSHOT]
at
org.apache.knox.gateway.topology.simple.SimpleDescriptorHandler.handle(SimpleDescriptorHandler.java:97)
~[gateway-topology-simple-2.1.0-SNAPSHOT.jar:2.1.0-SNAPSHOT]
at
org.apache.knox.gateway.services.topology.monitor.DescriptorsMonitor.onFileChange(DescriptorsMonitor.java:97)
[gateway-server-2.1.0-SNAPSHOT.jar:2.1.0-SNAPSHOT]
at
org.apache.knox.gateway.services.topology.monitor.DescriptorsMonitor.onFileCreate(DescriptorsMonitor.java:64)
[gateway-server-2.1.0-SNAPSHOT.jar:2.1.0-SNAPSHOT]
at
org.apache.commons.io.monitor.FileAlterationObserver.doCreate(FileAlterationObserver.java:391)
[commons-io-2.8.0.jar:2.8.0]
at
org.apache.commons.io.monitor.FileAlterationObserver.checkAndNotify(FileAlterationObserver.java:346)
[commons-io-2.8.0.jar:2.8.0]
at
org.apache.commons.io.monitor.FileAlterationObserver.checkAndNotify(FileAlterationObserver.java:305)
[commons-io-2.8.0.jar:2.8.0]
at
org.apache.commons.io.monitor.FileAlterationMonitor.run(FileAlterationMonitor.java:184)
[commons-io-2.8.0.jar:2.8.0]
at java.lang.Thread.run(Thread.java:748) [?:1.8.0_282]
```
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