logback.xml

<?xml version="1.0" encoding="UTF-8"?>
<configuration>

  <appender name="consoleAppender" class="ch.qos.logback.core.ConsoleAppender">
    <encoder>
      <pattern>%d{HH:mm:ss.SSS} In %logger{0}.%M\(\) - %-5p - %m%n</pattern>
    </encoder>
  </appender>

  <timestamp key="startTime" datePattern="yyyy-MM-dd_HH-mm-ss"/>
  <property name="LOG_FILE" value="run-${startTime}.log" />
  <property name="LOG_DIR" value="logs" />
  <appender name="FILE" class="ch.qos.logback.core.FileAppender">
    <file>${LOG_DIR}/${LOG_FILE}</file>
    <append>false</append> <!-- Overwrite if file exists (unlikely with timestamp) -->
    <encoder>
      <pattern>%d{HH:mm:ss.SSS} In %logger{0}.%M\(\) - %-5p - %m%n</pattern>
    </encoder>
  </appender>


  <!--change level to "debug" for verbose solver output-->
  <logger name="ai.timefold.solver" level="info"/>

  <root level="info">
    <appender-ref ref="consoleAppender" />
    <appender-ref ref="FILE"/>
  </root>

</configuration>