[LOG4J2-2888] Using AppenderComponentBuilder to Build an OutputStreamAppender

• Type: Question
• Status: Resolved
• Priority: Minor
• Resolution: Not A Bug
• Component/s: Configuration, Configurators
• Assignee: Unassigned
• Reporter: Daniel Resch
• Created: 08/Jul/20 20:46
• Updated: 27/Jul/20 05:17
• Resolved: 27/Jul/20 05:16

Description

Hi all,

I would like to programmatically create a configuration for an OutputStreamAppender using the AppenderComponentBuilder approach. I need to set the target output stream, but the .addAttribute("target", myOutputStream) method doesn't work. I have the following static method below:

public static void configureTextStackLogger()

{ ConfigurationBuilder<BuiltConfiguration> builder = ConfigurationBuilderFactory.newConfigurationBuilder(); builder.setStatusLevel(Level.ERROR); builder.setConfigurationName("MyApp"); builder.add(builder.newFilter("ThresholdFilter", Filter.Result.ACCEPT, Filter.Result.NEUTRAL) .addAttribute("level", Level.DEBUG)); AppenderComponentBuilder appenderBuilder = builder.newAppender("MyTextStack", "OutputStream"); appenderBuilder.add(builder.newLayout("PatternLayout") .addAttribute("pattern", "%d [%t] %-5level: %msg%n%throwable")); OutputStreamAppender osa = (OutputStreamAppender (appenderBuilder.getBuilder())) appenderBuilder.add(builder.newFilter("MarkerFilter", Filter.Result.DENY, Filter.Result.NEUTRAL) .addAttribute("marker", "FLOW")); builder.add(appenderBuilder); builder.add(builder.newLogger("com.my.app", Level.INFO) .add(builder.newAppenderRef("MyTextStack")).addAttribute("additivity", false)); builder.add(builder.newRootLogger(Level.ERROR).add(builder.newAppenderRef("MyTextStack"))); Configurator.initialize(builder.build()); }

What do I need to do to call the setTarget in OutputStreamAppender.Builder method so I can add my OutputStream?