Grails and Logback: Provide default logback configuration for development environment

_Events.groovy

import ch.qos.logback.classic.Level
import ch.qos.logback.classic.Logger
import ch.qos.logback.classic.LoggerContext
import ch.qos.logback.classic.encoder.PatternLayoutEncoder
import ch.qos.logback.classic.joran.JoranConfigurator
import ch.qos.logback.core.ConsoleAppender
import grails.util.Environment
import org.apache.commons.logging.Log
import org.apache.commons.logging.LogFactory
import org.slf4j.LoggerFactory;

Log log = LogFactory.getLog("_Events")

def activateLogbackFromConfigFile = { LoggerContext loggerContext ->
    JoranConfigurator configurator = new JoranConfigurator()
    configurator.context = loggerContext
    configurator.doConfigure('logback-config-dev.xml')
}

def activateLogbackProgrammatically = { LoggerContext loggerContext ->
    PatternLayoutEncoder encoder = new PatternLayoutEncoder()
    encoder.context = loggerContext
    encoder.pattern = "%date{ISO8601} Thread=\"%thread\" %-5level logger=\"%logger{136}\" message=\"%msg\"%n"
    encoder.start()

    ConsoleAppender consoleAppender = new ConsoleAppender()
    consoleAppender.name = 'console'
    consoleAppender.context = loggerContext

    consoleAppender.encoder = encoder

    Logger rootLogger = LoggerFactory.getLogger(Logger.ROOT_LOGGER_NAME)
    rootLogger.level = Level.WARN
    rootLogger.addAppender(consoleAppender)

    loggerContext.getLogger("com.example").level = Level.INFO
    // loggerContext.getLogger("org.codehaus.groovy.grails").level = Level.INFO
    // loggerContext.getLogger("org.springframework").level = Level.INFO
    // loggerContext.getLogger("org.hibernate").level = Level.INFO
    // loggerContext.getLogger("net.sf.ehcache.hibernate").level = Level.INFO
    // loggerContext.getLogger("org.springframework.web.client").level = Level.INFO

    consoleAppender.start()
}

eventCompileEnd = {

    boolean isCurrentEnvDevelopment = Environment.DEVELOPMENT.equals(Environment.currentEnvironment)

    if (isCurrentEnvDevelopment) {

        String logbackConfig = System.properties["logback.configurationFile"]
        if (!logbackConfig) {
            logbackConfig = System.env["logback.configurationFile"]
        }
        boolean isLogbackConfigProvided = logbackConfig != null

        if (isLogbackConfigProvided) {
            LogFactory.getLog("_Events").info "Logback is using: $logbackConfig"
        } else {
            log.info 'Logback is set for development mode. Change logback-config-dev.xml in order to adjust logging levels or change logging programmatically in _Events.groovy script.'
            // if we are in dev environment and logback is not provided, use this configuration
            LoggerContext loggerContext = LoggerFactory.getILoggerFactory()
            loggerContext.reset()

            // activateLogbackFromConfigFile loggerContext

            // or you can do this for dev needs (replace doConfigure method call)

            activateLogbackProgrammatically loggerContext
        }
    }
}