Failed to instantiate type org.fusesource.jansi.WindowsAnsiOutputStream

[guillermocalvo]

I'm following Micronaut GCP guide and bumped into this problem:

Failed to instantiate type org.fusesource.jansi.WindowsAnsiOutputStream.

Steps to Reproduce

1. mn create-app foobar
2. Add new Gradle dependency: implementation("io.micronaut.gcp:micronaut-gcp-logging")
3. Replace src/main/resources/logback.xml with:

<configuration>
    <include resource="io/micronaut/gcp/logging/logback-json-appender.xml" /> 
    <root level="INFO">
        <appender-ref ref="CONSOLE_JSON" /> 
    </root>
</configuration>

4. ./gradlew run on Windows

Expected Behaviour

I was expecting that withJansi was not enabled by default, at least on Windows.

I looked into included file io/micronaut/gcp/logging/logback-json-appender.xml and discovered that an appender STDOUT is being defined inside it:

    <appender name="STDOUT" class="ch.qos.logback.core.ConsoleAppender">
        <withJansi>true</withJansi>
        <encoder>
            <pattern>%cyan(%d{HH:mm:ss.SSS}) %gray([%thread]) %highlight(%-5level) %magenta(%logger{36}) - %msg%n </pattern>
        </encoder>
    </appender>

I just need appender CONSOLE_JSON (which is defined later on in that file) but since both of them are there, I get an error when I try to run the application on Windows. In fact, I'm not exactly sure whether STDOUT needs to be defined there at all.

So if there's no actual need I think that appender should be removed from the configuration file. In case it has to be there for some reason, I'd expect this withJansi flag to be configurable (something like <withJansi>${stdout.withJansi:true}</withJansi> would be enough).

Actual Behaviour

Stacktrace:

-INFO in ch.qos.logback.core.joran.action.AppenderAction - About to instantiate appender of type [ch.qos.logback.core.ConsoleAppender]
-INFO in ch.qos.logback.core.joran.action.AppenderAction - Naming appender as [STDOUT]
-INFO in ch.qos.logback.core.joran.action.NestedComplexPropertyIA - Assuming default type [ch.qos.logback.classic.encoder.PatternLayoutEncoder] for [encoder] property
-INFO in ch.qos.logback.core.ConsoleAppender[STDOUT] - Enabling JANSI WindowsAnsiOutputStream for the console.
-WARN in ch.qos.logback.core.ConsoleAppender[STDOUT] - Failed to create WindowsAnsiOutputStream. Falling back on the default stream. ch.qos.logback.core.util.DynamicClassLoadingException: Failed to instantiate type org.fusesource.jansi.WindowsAnsiOutputStream
        at ch.qos.logback.core.util.DynamicClassLoadingException: Failed to instantiate type org.fusesource.jansi.WindowsAnsiOutputStream
        at      at ch.qos.logback.core.util.OptionHelper.instantiateByClassNameAndParameter(OptionHelper.java:69)
        at      at ch.qos.logback.core.util.OptionHelper.instantiateByClassNameAndParameter(OptionHelper.java:40)
        at      at ch.qos.logback.core.ConsoleAppender.getTargetStreamForWindows(ConsoleAppender.java:88)
        at      at ch.qos.logback.core.ConsoleAppender.start(ConsoleAppender.java:79)
        at      at ch.qos.logback.core.joran.action.AppenderAction.end(AppenderAction.java:90)
        at      at ch.qos.logback.core.joran.spi.Interpreter.callEndAction(Interpreter.java:309)
        at      at ch.qos.logback.core.joran.spi.Interpreter.endElement(Interpreter.java:193)
        at      at ch.qos.logback.core.joran.spi.Interpreter.endElement(Interpreter.java:179)
        at      at ch.qos.logback.core.joran.spi.EventPlayer.play(EventPlayer.java:62)
        at      at ch.qos.logback.core.joran.GenericConfigurator.doConfigure(GenericConfigurator.java:165)
        at      at ch.qos.logback.core.joran.GenericConfigurator.doConfigure(GenericConfigurator.java:152)
        at      at ch.qos.logback.core.joran.GenericConfigurator.doConfigure(GenericConfigurator.java:110)
        at      at ch.qos.logback.core.joran.GenericConfigurator.doConfigure(GenericConfigurator.java:53)
        at      at ch.qos.logback.classic.util.ContextInitializer.configureByResource(ContextInitializer.java:75)
        at      at ch.qos.logback.classic.util.ContextInitializer.autoConfig(ContextInitializer.java:150)
        at      at org.slf4j.impl.StaticLoggerBinder.init(StaticLoggerBinder.java:84)
        at      at org.slf4j.impl.StaticLoggerBinder.<clinit>(StaticLoggerBinder.java:55)
        at      at org.slf4j.LoggerFactory.bind(LoggerFactory.java:150)
        at      at org.slf4j.LoggerFactory.performInitialization(LoggerFactory.java:124)
        at      at org.slf4j.LoggerFactory.getILoggerFactory(LoggerFactory.java:412)
        at      at org.slf4j.LoggerFactory.getLogger(LoggerFactory.java:357)
        at      at org.slf4j.LoggerFactory.getLogger(LoggerFactory.java:383)
        at      at io.micronaut.runtime.Micronaut.<clinit>(Micronaut.java:49)
        at      at foobar.Application.main(Application.java:8)
Caused by: java.lang.ClassNotFoundException: org.fusesource.jansi.WindowsAnsiOutputStream
        at      at java.base/jdk.internal.loader.BuiltinClassLoader.loadClass(BuiltinClassLoader.java:581)
        at      at java.base/jdk.internal.loader.ClassLoaders$AppClassLoader.loadClass(ClassLoaders.java:178)
        at      at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:522)
        at      at ch.qos.logback.core.util.OptionHelper.instantiateByClassNameAndParameter(OptionHelper.java:56)
        at      ... 23 common frames omitted
17:13:48,151 |-INFO in ch.qos.logback.core.joran.action.AppenderAction - About to instantiate appender of type [ch.qos.logback.core.ConsoleAppender]
17:13:48,151 |-INFO in ch.qos.logback.core.joran.action.AppenderAction - Naming appender as [CONSOLE_JSON]
17:13:48,255 |-INFO in ch.qos.logback.classic.joran.action.RootLoggerAction - Setting level of ROOT logger to INFO
17:13:48,255 |-INFO in ch.qos.logback.core.joran.action.AppenderRefAction - Attaching appender named [CONSOLE_JSON] to Logger[ROOT]
17:13:48,256 |-INFO in ch.qos.logback.classic.joran.action.ConfigurationAction - End of configuration.

Environment Information

• Operating System: Windows 10
• Micronaut Version: 2.5.8
• JDK Version: openjdk version "11.0.11" 2021-04-20

Example Application

• https://github.com/guillermocalvo/micronaut-gcp-logging-issue

[guillermocalvo]

Related issue: micronaut-projects/micronaut-core#1521