<?xml version="1.0" encoding="UTF-8"?>
<configuration>
  <include resource="org/springframework/boot/logging/logback/defaults.xml" />
  ​
  <springProperty scope="context" name="springAppName" source="spring.application.name" />
  <!-- Example for logging into the build folder of your project -->
  <property name="LOG_FILE" value="${BUILD_FOLDER:-build}/${springAppName}" />
  ​
  <property name="CONSOLE_LOG_PATTERN"
    value="%clr(%d{yyyy-MM-dd HH:mm:ss.SSS}){faint} %clr(${LOG_LEVEL_PATTERN:-%5p}) %clr([${springAppName:-},%X{X-B3-TraceId:-},%X{X-B3-SpanId:-},%X{X-B3-ParentSpanId:-},%X{X-Span-Export:-}]){yellow} %clr(${PID:- }){magenta} %clr(---){faint} %clr([%15.15t]){faint} %clr(%-40.40logger{39}){cyan} %clr(:){faint} %m%n${LOG_EXCEPTION_CONVERSION_WORD:-%wEx}" />

  <!-- Appender to log to console -->
  <appender name="console" class="ch.qos.logback.core.ConsoleAppender">
    <filter class="ch.qos.logback.classic.filter.ThresholdFilter">
      <!-- Minimum logging level to be presented in the console logs -->
      <level>DEBUG</level>
    </filter>
    <encoder>
      <pattern>${CONSOLE_LOG_PATTERN}</pattern>
      <charset>utf8</charset>
    </encoder>
  </appender>

  <!-- Appender to log to file -->
  <appender name="flatfile" class="ch.qos.logback.core.rolling.RollingFileAppender">
    <file>${LOG_FILE}</file>
    <rollingPolicy class="ch.qos.logback.core.rolling.TimeBasedRollingPolicy">
      <fileNamePattern>${LOG_FILE}.%d{yyyy-MM-dd}.gz</fileNamePattern>
      <maxHistory>7</maxHistory>
    </rollingPolicy>
    <encoder>
      <pattern>${CONSOLE_LOG_PATTERN}</pattern>
      <charset>utf8</charset>
    </encoder>
  </appender>
  ​
  <!-- Appender to log to file in a JSON format -->
  <appender name="logstash" class="ch.qos.logback.core.rolling.RollingFileAppender">
    <file>${LOG_FILE}.json</file>
    <rollingPolicy class="ch.qos.logback.core.rolling.TimeBasedRollingPolicy">
      <fileNamePattern>${LOG_FILE}.json.%d{yyyy-MM-dd}.gz</fileNamePattern>
      <maxHistory>7</maxHistory>
    </rollingPolicy>
    <encoder class="net.logstash.logback.encoder.LoggingEventCompositeJsonEncoder">
      <providers>
        <timestamp>
          <timeZone>UTC</timeZone>
        </timestamp>
        <pattern>
          <pattern>
            {
              "severity": "%level",
              "service": "${springAppName:-}",
              "trace": "%X{X-B3-TraceId:-}",
              "span": "%X{X-B3-SpanId:-}",
              "parent": "%X{X-B3-ParentSpanId:-}",
              "exportable": "%X{X-Span-Export:-}",
              "pid": "${PID:-}",
              "thread": "%thread",
              "class": "%logger{40}",
              "rest": "%message"
            }
          </pattern>
        </pattern>
      </providers>
    </encoder>
  </appender>
  ​
  <root level="INFO">
    <appender-ref ref="console" />
    <appender-ref ref="logstash" />
    <!--<appender-ref ref="flatfile"/> -->
  </root>
</configuration>