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August 2023

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2 discussions

Upgrading Logback Classic from 1.3.8 to 1.3.9 causes ClassNotFoundException: ch.qos.logback.classic.spi.Configurator
by dcmoeller＠gmx.de 29 Aug '23

29 Aug '23

Hello everybody, this morning weekly build of our software breaks with java.lang.ClassNotFoundException: ch.qos.logback.classic.spi.Configurator As we configure Gradle to apply runtimeOnly('ch.qos.logback:logback-classic:1.3+') this build receives new patch level version 1.3.9, published a few days ago. I've downloaded both versions, 1.3.8 and 1.3.9, of the lib from [1], missing class is available with 1.3.8, but missing in 1.3.9. General remark: I do not expect such a modification with patch level updates. My question: Is this a bug on your side, or have I missed some deprecation announcement explaining how to reconfigure Logback, or apply another Logback lib, or the like to avoid this problem? Thanks and regards Christian [1] https://mvnrepository.com/artifact/ch.qos.logback/logback-classic

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logback-classic 1.4.9 removes public method
by Felix Krull 12 Aug '23

12 Aug '23

Hi, apparently logback-classic 1.4.9 removed the public method `configureByResource` from `ContextInitializer`, thereby breaking backwards compatibility? The method was removed in a commit [1] which made it into 1.4.9. It was deprecated in November of last year: I don't think this deprecation has ever been in a major release? Even if it had, I'd say it's poor form to remove deprecated things in a patch release. This breaks Play Framework [3] which uses the method for its logging setup, making it impossible to upgrade to this patch version. Regards, Felix [1]: https://github.com/qos-ch/logback/commit/4b06e062488e4cb87f22be6ae96e4d7d63… [2]: https://github.com/qos-ch/logback/commit/86f388965204df28843039f65b0bc437af… [3]: https://www.playframework.com/

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