RFR: 8369995: Implement extra logging and/or propagate errors in X509KeyManagerImpl

[Artur Barashev]

On Thu, 16 Oct 2025 16:34:50 GMT, Mikhail Yankelevich <myankelevich at openjdk.org> wrote:

> In [JDK-8309667](https://bugs.openjdk.org/browse/JDK-8309667), there were issues with debugging due to no logging or throwing of errors by X509KeyManagerImpl::getEntry. [Line](https://github.com/openjdk/jdk/blob/6a4c2676a6378f573bd58d1bc32b57765d756291/src/java.base/share/classes/sun/security/ssl/X509KeyManagerImpl.java#L243-L245)
> 
> Extra logging and error propagating should be implemented for the X509KeyManagerImpl.
> 
> Thank you @djelinski for finding the issue and analysis.

src/java.base/share/classes/sun/security/ssl/X509KeyManagerImpl.java line 251:

> 249:             // ignore and only log exception
> 250:             if (SSLLogger.isOn && SSLLogger.isOn("keymanager")) {
> 251:                 SSLLogger.fine("KeyMgr: exception triggered: " + e);

I think this should be logged at `warning` level.

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PR Review Comment: https://git.openjdk.org/jdk/pull/27851#discussion_r2437204394