Application random logs generator, with multi-line entries / published by https://github.com/dacr/code-examples-manager #22c428d2-e5da-4d3a-b02a-cbf430bda590/5d6afccfae4409a7d2fef098a281d9d6974143f

logging-generator-application-logs.sc

// summary : Application random logs generator, with multi-line entries
// keywords : scala, logs, generator, logback
// publish : gist
// authors : David Crosson
// license : Apache NON-AI License Version 2.0 (https://raw.githubusercontent.com/non-ai-licenses/non-ai-licenses/main/NON-AI-APACHE2)
// id : 22c428d2-e5da-4d3a-b02a-cbf430bda590
// created-on : 2020-05-31T19:54:52Z
// managed-by : https://github.com/dacr/code-examples-manager
// run-with : scala-cli $file

// ---------------------
//> using scala "3.4.2"
//> using dep "ch.qos.logback:logback-classic:1.4.7"
// ---------------------

import org.slf4j._
import ch.qos.logback.classic

object LogBackHelpers {
  def configureLogBack(xmlConfig:String):Unit = {
    val loggerContext = LoggerFactory.getILoggerFactory.asInstanceOf[classic.LoggerContext]
    loggerContext.reset()
    val configurator = new classic.joran.JoranConfigurator()
    val configStream = new java.io.ByteArrayInputStream(xmlConfig.getBytes)
    configurator.setContext(loggerContext)
    configurator.doConfigure(configStream)
  }

  def getRootLogger():classic.Logger = {
    LoggerFactory.getLogger(Logger.ROOT_LOGGER_NAME).asInstanceOf[classic.Logger]
  }
  def getLogger(name:String):Logger = {
    LoggerFactory.getLogger(Logger.ROOT_LOGGER_NAME)
  }
}


val logConfig =
  """<?xml version="1.0" encoding="UTF-8"?>
    |<configuration
    |        scan="false"
    |        scanPeriod="45 seconds"
    |        xmlns="http://ch.qos.logback/xml/ns/logback"
    |        xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
    |
    |    <appender name="FILE" class="ch.qos.logback.core.rolling.RollingFileAppender">
    |        <file>${log.application.output:-application.log}</file>
    |        <rollingPolicy class="ch.qos.logback.core.rolling.FixedWindowRollingPolicy">
    |            <fileNamePattern>${log.application.output:-application.log}.%i</fileNamePattern>
    |            <minIndex>1</minIndex>
    |            <maxIndex>10</maxIndex>
    |        </rollingPolicy>
    |        <triggeringPolicy class="ch.qos.logback.core.rolling.SizeBasedTriggeringPolicy">
    |            <maxFileSize>20MB</maxFileSize>
    |        </triggeringPolicy>
    |        <encoder >
    |            <pattern>%date %level [%thread] %logger{10} %file:%line %msg%n</pattern>
    |        </encoder>
    |    </appender>
    |
    |    <root level="${log.root.level:-DEBUG}">
    |        <appender-ref ref="FILE"/>
    |    </root>
    |
    |</configuration>
    |""".stripMargin

import LogBackHelpers._
configureLogBack(logConfig)

val mainLogger = getLogger("main")
mainLogger.info("Application starts")

mainLogger.info("Application ends")