Confugure Logback with Logstash appender in Spring Boot application

gistfile1.txt

pom.xml
-------

<!-- Used for conditional processing of Logback config -->
<!-- See: http://logback.qos.ch/manual/configuration.html#conditional-->
<dependency>
    <groupId>org.codehaus.janino</groupId>
    <artifactId>janino</artifactId>
    <version>3.0.6</version>
</dependency>

logback-spring.xml
------------------

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

    <include resource="org/springframework/boot/logging/logback/defaults.xml" />
    <include resource="org/springframework/boot/logging/logback/console-appender.xml" />

    <!-- Log file name (without extension), defaults to 'logs/log' -->
    <!-- Based on Spring Boot 'logging.file' property -->
    <!-- https://docs.spring.io/spring-boot/docs/current/reference/html/howto.html#howto-configure-logback-for-logging -->
    <property name="LOG_FILE" value="${LOG_PATH:-logs/log}" />

    <!-- Log file max size, defaults to 50MB -->
    <property name="LOG_FILE_MAX_SIZE" value="${LOG_FILE_MAX_SIZE:-50MB}" />

    <!-- Log file appender with Logstash encoder-->
    <appender name="FILE" class="ch.qos.logback.core.rolling.RollingFileAppender">
        <filter class="ch.qos.logback.classic.filter.ThresholdFilter">
            <level>INFO</level>
        </filter>
        <file>${LOG_FILE}.log</file>
        <rollingPolicy class="ch.qos.logback.core.rolling.FixedWindowRollingPolicy">
            <fileNamePattern>${LOG_FILE}.%i.log.zip</fileNamePattern>
            <minIndex>1</minIndex>
            <maxIndex>1</maxIndex>
        </rollingPolicy>
        <triggeringPolicy class="ch.qos.logback.core.rolling.SizeBasedTriggeringPolicy">
            <maxFileSize>${LOG_FILE_MAX_SIZE}</maxFileSize>
        </triggeringPolicy>
        <encoder class="net.logstash.logback.encoder.LogstashEncoder"/>
    </appender>

    <!-- Define level aliases for some loggers based on Spring Boot 'logging.level' props -->
    <!-- com.example must be replaced to project package -->
    <springProperty scope="context" name="root"      source="logging.level.root"                         defaultValue="warn" />
    <springProperty scope="context" name="example"   source="logging.level.com.example"                  defaultValue="warn" />
    <springProperty scope="context" name="spring"    source="logging.level.org.springframework"          defaultValue="warn" />
    <springProperty scope="context" name="data"      source="logging.level.org.springframework.data"     defaultValue="warn" />
    <springProperty scope="context" name="web"       source="logging.level.org.springframework.web"      defaultValue="warn" />
    <springProperty scope="context" name="security"  source="logging.level.org.springframework.security" defaultValue="warn" />

    <!-- Set up logging level for some loggers -->
    <logger name="com.example"                  level="${example}" />
    <logger name="org.springframework"          level="${spring}" />
    <logger name="org.springframework.data"     level="${data}" />
    <logger name="org.springframework.web"      level="${web}" />
    <logger name="org.springframework.security" level="${security}" />

    <!-- For 'local' profile - log to console and to file if 'log.file' property is set -->
    <springProfile name="local">
        <root level="${root}">
            <appender-ref ref="CONSOLE" />
            <if condition='!property("LOG_PATH").isEmpty()'>
                <then>
                    <appender-ref ref="FILE" />
                </then>
            </if>
        </root>
    </springProfile>

    <!-- For 'dev' and 'test' profiles - log to console and to file -->
    <springProfile name="dev, test">
        <root level="${root}">
            <appender-ref ref="CONSOLE" />
            <appender-ref ref="FILE" />
        </root>
    </springProfile>

    <!-- For 'prod' and 'stage' profiles - log to file only -->
    <springProfile name="prod, stage">
        <root level="${root}">
            <appender-ref ref="FILE" />
        </root>
    </springProfile>
</configuration>