[
https://jira.qos.ch/browse/SLF4J-463?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Ceki Gülcü resolved SLF4J-463.
------------------------------
Resolution: Fixed
Fixed in [commit cc915 |
https://github.com/qos-ch/slf4j/commit/acc915075b4932ebf99]
> LogServiceProvider.initialize called twice
> ------------------------------------------
>
> Key: SLF4J-463
> URL: https://jira.qos.ch/browse/SLF4J-463
> Project: SLF4J
> Issue Type: Bug
> Affects Versions: 2.0.0-alpha0
> Reporter: Dan Groves
> Assignee: Ceki Gülcü
> Priority: Blocker
> Fix For: 2.0.0-alpha1
>
> Attachments: logback-demo.tar
>
>
> With logback 1.3.0-alpha code and slf4j 1.8,
> {{LogServiceProvider::initialize}} can be called twice. I did not see this
> with logback 1.2.3 and slf4j 1.7.25.
> I attached some test code. The test code uses logback 1.3.0-alpha4, but I
> saw the problem with all alpha versions of logback 1.3.0.
> {noformat}
> $ tar xf logback-demo.tar
> $ cd logback-demo
> $ ./gradlew clean build
> BUILD SUCCESSFUL in 0s
> 8 actionable tasks: 7 executed, 1 up-to-date
> $ cd build/distributions
> $ tar xf logback-demo-1.0-SNAPSHOT.tar
> $ cd logback-demo-1.0-SNAPSHOT/bin/
> $ ./logback-demo
> 16:30:12,127 |-INFO in ch.qos.logback.classic.LoggerContext[default] - Could
> NOT find resource [logback-test.xml]
> 16:30:12,127 |-INFO in ch.qos.logback.classic.LoggerContext[default] - Could
> NOT find resource [logback.groovy]
> 16:30:12,127 |-INFO in ch.qos.logback.classic.LoggerContext[default] - Found
> resource [logback.xml] at
> [jar:file:/Users/dgroves/git/demo/logback-demo/build/distributions/logback-demo-1.0-SNAPSHOT/lib/logback-demo-1.0-SNAPSHOT.jar!/logback.xml]
> 16:30:12,140 |-INFO in
> ch.qos.logback.core.joran.spi.ConfigurationWatchList@ee7d9f1 - URL
> [jar:file:/Users/dgroves/git/demo/logback-demo/build/distributions/logback-demo-1.0-SNAPSHOT/lib/logback-demo-1.0-SNAPSHOT.jar!/logback.xml]
> is not of type file
> 16:30:12,202 |-INFO in ch.qos.logback.core.joran.action.AppenderAction -
> About to instantiate appender of type [ch.qos.logback.core.ConsoleAppender]
> 16:30:12,205 |-INFO in ch.qos.logback.core.joran.action.AppenderAction -
> Naming appender as [STDOUT]
> 16:30:12,210 |-INFO in
> ch.qos.logback.core.joran.action.NestedComplexPropertyIA - Assuming default
> type [ch.qos.logback.classic.encoder.PatternLayoutEncoder] for [encoder]
> property
> 16:30:12,230 |-INFO in ch.qos.logback.classic.joran.action.RootLoggerAction -
> Setting level of ROOT logger to DEBUG
> 16:30:12,230 |-INFO in ch.qos.logback.core.joran.action.AppenderRefAction -
> Attaching appender named [STDOUT] to Logger[ROOT]
> 16:30:12,231 |-INFO in
> ch.qos.logback.classic.joran.action.ConfigurationAction - End of
> configuration.
> 16:30:12,232 |-INFO in ch.qos.logback.classic.joran.JoranConfigurator@18ef96
> - Registering current configuration as safe fallback point
> 16:30:12.233 [main] INFO demo - test
> 16:30:12,235 |-INFO in ch.qos.logback.classic.LoggerContext[default] - Could
> NOT find resource [logback-test.xml]
> 16:30:12,235 |-INFO in ch.qos.logback.classic.LoggerContext[default] - Could
> NOT find resource [logback.groovy]
> 16:30:12,235 |-INFO in ch.qos.logback.classic.LoggerContext[default] - Found
> resource [logback.xml] at
> [jar:file:/Users/dgroves/git/demo/logback-demo/build/distributions/logback-demo-1.0-SNAPSHOT/lib/logback-demo-1.0-SNAPSHOT.jar!/logback.xml]
> 16:30:12,235 |-INFO in
> ch.qos.logback.core.joran.spi.ConfigurationWatchList@17ed40e0 - URL
> [jar:file:/Users/dgroves/git/demo/logback-demo/build/distributions/logback-demo-1.0-SNAPSHOT/lib/logback-demo-1.0-SNAPSHOT.jar!/logback.xml]
> is not of type file
> 16:30:12,237 |-INFO in ch.qos.logback.core.joran.action.AppenderAction -
> About to instantiate appender of type [ch.qos.logback.core.ConsoleAppender]
> 16:30:12,238 |-INFO in ch.qos.logback.core.joran.action.AppenderAction -
> Naming appender as [STDOUT]
> 16:30:12,238 |-INFO in
> ch.qos.logback.core.joran.action.NestedComplexPropertyIA - Assuming default
> type [ch.qos.logback.classic.encoder.PatternLayoutEncoder] for [encoder]
> property
> 16:30:12,239 |-INFO in ch.qos.logback.classic.joran.action.RootLoggerAction -
> Setting level of ROOT logger to DEBUG
> 16:30:12,239 |-INFO in ch.qos.logback.core.joran.action.AppenderRefAction -
> Attaching appender named [STDOUT] to Logger[ROOT]
> 16:30:12,239 |-INFO in
> ch.qos.logback.classic.joran.action.ConfigurationAction - End of
> configuration.
> 16:30:12,239 |-INFO in
> ch.qos.logback.classic.joran.JoranConfigurator@50675690 - Registering current
> configuration as safe fallback point
> {noformat}
> If I modify the {{build.gradle}} file in the bundle to comment out the newer
> dependencies and instead use the older ones, so that the dependencies block
> looks like:
> {noformat}
> dependencies {
> implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk8"
> // These cause the double call into LogbackServiceProvider.initialize
> // implementation "org.slf4j:slf4j-api:1.8.0-beta4"
> // implementation "ch.qos.logback:logback-classic:1.3.0-alpha4"
> // These do not cause the double call into
> LogbackServiceProvider.initialize
> implementation "org.slf4j:slf4j-api:1.7.25"
> implementation "ch.qos.logback:logback-classic:1.2.3"
> }
> {noformat}
> I get different output showing only one attempt to initialize logback:
> {noformat}
> $ ./gradlew clean build
> BUILD SUCCESSFUL in 0s
> 8 actionable tasks: 7 executed, 1 up-to-date
> $ cd build/distributions/
> $ tar xf logback-demo-1.0-SNAPSHOT.tar
> $ cd logback-demo-1.0-SNAPSHOT/bin/
> $ ./logback-demo
> 16:34:05,882 |-INFO in ch.qos.logback.classic.LoggerContext[default] - Could
> NOT find resource [logback-test.xml]
> 16:34:05,882 |-INFO in ch.qos.logback.classic.LoggerContext[default] - Could
> NOT find resource [logback.groovy]
> 16:34:05,882 |-INFO in ch.qos.logback.classic.LoggerContext[default] - Found
> resource [logback.xml] at
> [jar:file:/Users/dgroves/git/demo/logback-demo/build/distributions/logback-demo-1.0-SNAPSHOT/lib/logback-demo-1.0-SNAPSHOT.jar!/logback.xml]
> 16:34:05,894 |-INFO in
> ch.qos.logback.core.joran.spi.ConfigurationWatchList@ba8a1dc - URL
> [jar:file:/Users/dgroves/git/demo/logback-demo/build/distributions/logback-demo-1.0-SNAPSHOT/lib/logback-demo-1.0-SNAPSHOT.jar!/logback.xml]
> is not of type file
> 16:34:05,960 |-INFO in ch.qos.logback.core.joran.action.AppenderAction -
> About to instantiate appender of type [ch.qos.logback.core.ConsoleAppender]
> 16:34:05,963 |-INFO in ch.qos.logback.core.joran.action.AppenderAction -
> Naming appender as [STDOUT]
> 16:34:05,967 |-INFO in
> ch.qos.logback.core.joran.action.NestedComplexPropertyIA - Assuming default
> type [ch.qos.logback.classic.encoder.PatternLayoutEncoder] for [encoder]
> property
> 16:34:05,988 |-INFO in ch.qos.logback.classic.joran.action.RootLoggerAction -
> Setting level of ROOT logger to DEBUG
> 16:34:05,988 |-INFO in ch.qos.logback.core.joran.action.AppenderRefAction -
> Attaching appender named [STDOUT] to Logger[ROOT]
> 16:34:05,988 |-INFO in
> ch.qos.logback.classic.joran.action.ConfigurationAction - End of
> configuration.
> 16:34:05,989 |-INFO in
> ch.qos.logback.classic.joran.JoranConfigurator@4ca8195f - Registering current
> configuration as safe fallback point
> 16:34:05.991 [main] INFO demo - test
> {noformat}
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