April 2019 - logback-dev - mailman3.qos.ch

removing context selectors will break our libraries and applications
by Garret Wilson 28 Apr '19

28 Apr '19

Hi, I've been pretty deep inside the Logback code. In fact I wrote a comprehensive explanation on the bootstrap procedure here: https://stackoverflow.com/a/38317149/421049 We've created a library called Csar that allows one to configure various configuration "contexts" within the same JVM, for a program that has different locales at the same time, or different logging configurations for different users, etc. I explain this all at https://dzone.com/articles/creating-local-globals-with-csar . Our Clogr library used Csar to allow different logging configurations (or even different logging libraries!) to be set up for different parts of the application. (Imagine a server with different user sessions, each session being logged to a different file.) We got this working great for Logback. In fact we integrated it into our software development course; read about it here: https://clogr.io/learn (See the section on Clogr and compartmentalized configurations with Logback at the bottom.) The problem is that the initial bootstrap sequence of Logback was brittle, relying on a static class that could appear across modules. The appearance of the Java 9+ module system prohibits this altogether. But I had already created a ticket https://jira.qos.ch/browse/LOGBACK-1196 for how to fix this, long before the Java system was released, using the standard service provider mechanism. But now I see at https://logback.qos.ch/news.html that Logback will remove contexts altogether. This will break our ability to configure loggers separately in our application, and to use Clogr to manage them. Why remove this? There was nothing wrong with the simple context selection. The problem was how it was configured, using a static classes that had to be placed in a module outside its package. Just implement https://jira.qos.ch/browse/LOGBACK-1196, please. Don't break our application. I even provide much of the code to do this at LOGBACK-1196. What can we do to keep this from being removed and breaking our library? Why do we need to remove it in the first place? Why not fix it? (Ironically I was just told that Log4j 2 supports contexts, so maybe our application will have to switch back to Log4j. But I would prefer to have Clogr support both Logback and Log4j 2. There is no reason to remove this capability from Logback.) As I mentioned two years ago in LOGBACK-1196, I'm willing to contribute to fixing this. Let me know how to go forward. Thanks, Garret Wilson President GlobalMentor, Inc.

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[JIRA] (LOGBACK-1404) SizeAndTimeBasedRollingPolicy discards log data
by QOS.CH (JIRA) 25 Apr '19

25 Apr '19

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[JIRA] (LOGBACK-1404) SizeAndTimeBasedRollingPolicy discards log data
by QOS.CH (JIRA) 25 Apr '19

25 Apr '19

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[JIRA] (LOGBACK-1404) SizeAndTimeBasedRollingPolicy discards log data
by QOS.CH (JIRA) 25 Apr '19

25 Apr '19

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[JIRA] (LOGBACK-1404) SizeAndTimeBasedRollingPolicy discards log data
by QOS.CH (JIRA) 25 Apr '19

25 Apr '19

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[qos-ch/logback] d165f5: remove files marked old
by Ceki Gulcu 22 Apr '19

22 Apr '19

Branch: refs/heads/configModel Home: https://github.com/qos-ch/logback Commit: d165f504d8385964d860939f7c5db22a33ca2a5b https://github.com/qos-ch/logback/commit/d165f504d8385964d860939f7c5db22a33… Author: Ceki Gulcu <ceki(a)qos.ch> Date: 2019-04-22 (Mon, 22 Apr 2019) Changed paths: R logback-classic/src/main/java/ch/qos/logback/classic/joran/action/LevelActionOld.java R logback-classic/src/main/java/ch/qos/logback/classic/joran/action/LoggerActionOld.java R logback-classic/src/main/java/ch/qos/logback/classic/joran/action/LoggerContextListenerActionOld.java R logback-core/src/main/java/ch/qos/logback/core/joran/action/AbstractEventEvaluatorActionOld.java R logback-core/src/main/java/ch/qos/logback/core/joran/action/AppenderActionOld.java R logback-core/src/main/java/ch/qos/logback/core/joran/action/AppenderRefActionOld.java R logback-core/src/main/java/ch/qos/logback/core/joran/action/ImplicitActionOld.java R logback-core/src/main/java/ch/qos/logback/core/joran/action/IncludeActionOld.java R logback-core/src/main/java/ch/qos/logback/core/joran/action/ParamActionOld.java Log Message: ----------- remove files marked old

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[qos-ch/logback] 752938: test ability to appender references befotre append...
by Ceki Gulcu 22 Apr '19

22 Apr '19

Branch: refs/heads/configModel Home: https://github.com/qos-ch/logback Commit: 752938568b7c8d36fa5cc99b74d583d0afdd3849 https://github.com/qos-ch/logback/commit/752938568b7c8d36fa5cc99b74d583d0af… Author: Ceki Gulcu <ceki(a)qos.ch> Date: 2019-04-22 (Mon, 22 Apr 2019) Changed paths: M logback-access/src/main/java/ch/qos/logback/access/model/processor/ConfigurationModelHandler.java M logback-classic/pom.xml M logback-classic/src/main/java/ch/qos/logback/classic/joran/action/ConfigurationAction.java M logback-classic/src/main/java/ch/qos/logback/classic/model/processor/ConfigurationModelHandler.java A logback-classic/src/test/input/joran/appenderAfterLogger.xml M logback-classic/src/test/java/ch/qos/logback/classic/joran/JoranConfiguratorTest.java M logback-classic/src/test/java/ch/qos/logback/classic/joran/ReconfigureOnChangeTaskTest.java Log Message: ----------- test ability to appender references befotre appender definitions Commit: f42710d23446583ef5bb47c9c27dc56ab9d3d310 https://github.com/qos-ch/logback/commit/f42710d23446583ef5bb47c9c27dc56ab9… Author: Ceki Gulcu <ceki(a)qos.ch> Date: 2019-04-22 (Mon, 22 Apr 2019) Changed paths: R logback-classic/src/test/input/joran/appenderAfterLogger.xml A logback-classic/src/test/input/joran/appenderRefBeforeAppender.xml M logback-classic/src/test/java/ch/qos/logback/classic/joran/JoranConfiguratorTest.java Log Message: ----------- rename test as appenderRefBeforeAppenderTest Compare: https://github.com/qos-ch/logback/compare/4c243dec0f84...f42710d23446

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[qos-ch/logback] 222968: adaptive fork count for surefire
by Ceki Gulcu 22 Apr '19

22 Apr '19

Branch: refs/heads/configModel Home: https://github.com/qos-ch/logback Commit: 222968b8f975996f733b93eca27a9f48c0c772a6 https://github.com/qos-ch/logback/commit/222968b8f975996f733b93eca27a9f48c0… Author: Ceki Gulcu <ceki(a)qos.ch> Date: 2019-04-22 (Mon, 22 Apr 2019) Changed paths: M logback-classic/pom.xml M logback-core/pom.xml Log Message: ----------- adaptive fork count for surefire Commit: 175d54dd732e830ade926947aa8b253a4f46b119 https://github.com/qos-ch/logback/commit/175d54dd732e830ade926947aa8b253a4f… Author: Ceki Gulcu <ceki(a)qos.ch> Date: 2019-04-22 (Mon, 22 Apr 2019) Changed paths: R logback-core/src/main/java/ch/qos/logback/core/joran/event/InPlayListener.java M logback-core/src/main/java/ch/qos/logback/core/joran/event/stax/StaxEventRecorder.java M logback-core/src/main/java/ch/qos/logback/core/joran/spi/EventPlayer.java M logback-core/src/main/java/ch/qos/logback/core/joran/spi/InterpretationContext.java Log Message: ----------- InPlayListener no longer needed Commit: 4c243dec0f841194cb9a64215aea45602ac55211 https://github.com/qos-ch/logback/commit/4c243dec0f841194cb9a64215aea45602a… Author: Ceki Gulcu <ceki(a)qos.ch> Date: 2019-04-22 (Mon, 22 Apr 2019) Changed paths: M logback-classic/src/main/java/ch/qos/logback/classic/joran/action/ConsolePluginAction.java M logback-classic/src/main/java/ch/qos/logback/classic/servlet/LogbackServletContainerInitializer.java Log Message: ----------- minor fixes Compare: https://github.com/qos-ch/logback/compare/8e04def7fb35...4c243dec0f84

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[qos-ch/logback] acdd30: LayoutWrappingEncoder#isStarted should return actu...
by Ceki Gulcu 21 Apr '19

21 Apr '19

Branch: refs/heads/master Home: https://github.com/qos-ch/logback Commit: acdd3002bac4f84ab7b5166c56e6ea1e652d618a https://github.com/qos-ch/logback/commit/acdd3002bac4f84ab7b5166c56e6ea1e65… Author: Danny Guinther <dannyguinther(a)gmail.com> Date: 2019-04-19 (Fri, 19 Apr 2019) Changed paths: M logback-classic/src/test/java/ch/qos/logback/classic/encoder/PatternLayoutEncoderTest.java M logback-core/src/main/java/ch/qos/logback/core/encoder/LayoutWrappingEncoder.java Log Message: ----------- LayoutWrappingEncoder#isStarted should return actual started state Commit: 8fccc8879641be6c4ad7da0f2a6057f6bb9fbd47 https://github.com/qos-ch/logback/commit/8fccc8879641be6c4ad7da0f2a6057f6bb… Author: Ceki Gulcu <ceki(a)qos.ch> Date: 2019-04-22 (Mon, 22 Apr 2019) Changed paths: M logback-classic/src/test/java/ch/qos/logback/classic/encoder/PatternLayoutEncoderTest.java M logback-core/src/main/java/ch/qos/logback/core/encoder/LayoutWrappingEncoder.java Log Message: ----------- Merge pull request #455 from tdg5/layout-wrapping-encoder-actual-is-started LayoutWrappingEncoder#isStarted should return actual started state Compare: https://github.com/qos-ch/logback/compare/a3caba0c3c79...8fccc8879641

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[qos-ch/logback] 8e04de: green bar
by Ceki Gulcu 21 Apr '19

21 Apr '19

Branch: refs/heads/configModel Home: https://github.com/qos-ch/logback Commit: 8e04def7fb35777fa37f1134a9b714f734fb1cdb https://github.com/qos-ch/logback/commit/8e04def7fb35777fa37f1134a9b714f734… Author: Ceki Gulcu <ceki(a)qos.ch> Date: 2019-04-22 (Mon, 22 Apr 2019) Changed paths: M logback-access/src/main/java/ch/qos/logback/access/joran/JoranConfigurator.java M logback-classic/src/main/java/ch/qos/logback/classic/joran/JoranConfigurator.java M logback-classic/src/test/java/ch/qos/logback/classic/joran/JoranConfiguratorTest.java M logback-core/src/main/java/ch/qos/logback/core/ContextBase.java M logback-core/src/main/java/ch/qos/logback/core/model/processor/EventEvaluatorModelHandler.java Log Message: ----------- green bar

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