For better flexibility we will do all library logging through slf4j API.
The Logger interface will be deprecated and removed in the future.
Changes in this PR
deprecated com.yubico.yubikit.core.Logger
replaced com.yubico.yubikit.core.Logger with org.slf4j.Logger in apps and testing modules
in yubikit libraries we use new static methods of com.yubico.yubikit.core.Logger which adapt to either original or new logging implementation. The reason is that we have to avoid breaking changes: original Logger supported only e and d log levels, and slf4j supports greater spectrum, but we have to use only e and d if the application using YubiKit still provides implementation of com.yubico.yubikit.core.Logger. This adapter will be removed in 3.x:
instead of Logger.info(logger, "msg") we will use logger.info("msg") in the library.
updated documentation, and copyright messages, provided migration guide
For better flexibility we will do all library logging through
slf4jAPI. TheLoggerinterface will be deprecated and removed in the future.Changes in this PR
com.yubico.yubikit.core.Loggercom.yubico.yubikit.core.Loggerwithorg.slf4j.Loggerin apps and testing modulesin yubikit libraries we use new static methods of
com.yubico.yubikit.core.Loggerwhich adapt to either original or new logging implementation. The reason is that we have to avoid breaking changes: originalLoggersupported onlyeanddlog levels, andslf4jsupports greater spectrum, but we have to use onlyeanddif the application using YubiKit still provides implementation ofcom.yubico.yubikit.core.Logger. This adapter will be removed in 3.x:Logger.info(logger, "msg")we will uselogger.info("msg")in the library.