logback appender 사용성 대한 개인적인 정리

<?xml version="1.0" encoding="UTF-8"?>
<configuration>
    <appender name="EMAIL" class="ch.qos.logback.classic.net.SMTPAppender">
        <evaluator class="ch.qos.logback.classic.boolex.OnMarkerEvaluator">
            <marker>NOTIFY_ADMIN</marker>
        </evaluator>
        <smtpHost>smtp-relay.gmail.com</smtpHost>
        <from>geonc123@estsoft.com</from>
        <to>geonc123@estsoft.com</to>
        <subject>TESTING: %logger{20} - %m</subject>
        <layout class="ch.qos.logback.classic.html.HTMLLayout"/>
    </appender>

    <root level="INFO">
        <appender-ref ref="EMAIL" />
    </root>
</configuration>

@RestControllerAdvice
class HelloExceptionHandler {
    private val log = LoggerFactory.getLogger(HelloExceptionHandler::class.java)
    @ExceptionHandler(RuntimeException::class)
    fun handleException(e: RuntimeException): String {
        val notifyAdmin = MarkerFactory.getMarker("NOTIFY_ADMIN")
        log.warn(notifyAdmin, "An exception occurred {}", e.message)
        return "Error: ${e.message}"
    }
}

<?xml version="1.0" encoding="UTF-8"?>
<configuration>
    <appender name="EMAIL" class="ch.qos.logback.classic.net.SMTPAppender">
        <evaluator class="ch.qos.logback.classic.boolex.OnMarkerEvaluator">
            <marker>NOTIFY_ADMIN</marker>
            <expression>markerList.contains("NOTIFY_ADMIN")||markerList.contains("TRANSACTION_ADMIN")</expression>
        </evaluator>
        <smtpHost>smtp-relay.gmail.com</smtpHost>
        <from>geonc123@estsoft.com</from>
        <to>geonc123@estsoft.com</to>
        <subject>TESTING: %logger{20} - %m</subject>
        <layout class="ch.qos.logback.classic.html.HTMLLayout"/>
    </appender>

    <root level="INFO">
        <appender-ref ref="EMAIL" />
    </root>
</configuration>

dependencies {
	implementation("org.codehaus.janino:janino:3.1.12")
}

<?xml version="1.0" encoding="UTF-8"?>
<configuration>
    <appender name="DB" class="ch.qos.logback.classic.db.DBAppender">
        <connectionSource class="ch.qos.logback.core.db.DriverManagerConnectionSource">
            <driverClass>com.mysql.jdbc.Driver</driverClass>
            <url>jdbc:mysql://localhost:3306/log</url>
            <user>root</user>
            <password>root</password>
        </connectionSource>
    </appender>
</configuration>

dependencies {
	// https://mvnrepository.com/artifact/ch.qos.logback.db/logback-classic-db
	implementation("ch.qos.logback.db:logback-classic-db:1.2.11.1")
}

mysql> show tables;
+-------------------------+
| Tables_in_log           |
+-------------------------+
| logging_event           |
| logging_event_exception |
| logging_event_property  |
+-------------------------+

dependencies {
	runtimeOnly("com.mysql:mysql-connector-j")
}

<configuration>
  <appender name="FILE" class="ch.qos.logback.core.FileAppender">
    <file>log.log</file>
  </appender>
 </configuration>

<configuration>
  <timestamp key="bySecond" datePattern="yyyyMMdd'T'HHmmss"/>

  <appender name="FILE" class="ch.qos.logback.core.FileAppender">
    <file>log-${bySecond}.log</file>
  </appender>
 </configuration>

<configuration>
	<appender name="FILE" class="ch.qos.logback.core.rolling.RollingFileAppender">
		<rollingPolicy class="ch.qos.logback.core.rolling.SizeAndTimeBasedRollingPolicy">
			<fileNamePattern>${LOGBACK_ROLLINGPOLICY_FILE_NAME_PATTERN:-${LOG_FILE}.%d{yyyy-MM-dd}.%i.gz}</fileNamePattern>
			<cleanHistoryOnStart>${LOGBACK_ROLLINGPOLICY_CLEAN_HISTORY_ON_START:-false}</cleanHistoryOnStart>
			<maxFileSize>${LOGBACK_ROLLINGPOLICY_MAX_FILE_SIZE:-10MB}</maxFileSize>
			<totalSizeCap>${LOGBACK_ROLLINGPOLICY_TOTAL_SIZE_CAP:-0}</totalSizeCap>
			<maxHistory>${LOGBACK_ROLLINGPOLICY_MAX_HISTORY:-7}</maxHistory>
		</rollingPolicy>
	</appender>
</configuration>

<configuration>
    <appender name="ecs-appender" class="ch.qos.logback.core.rolling.RollingFileAppender">
        <!--...-->
    </appender>

    <appender name="async-appender" class="ch.qos.logback.classic.AsyncAppender">
        <appender-ref ref="ecs-appender"/>
    </appender>

    <root level="INFO">
        <appender-ref ref="async-appender"/>
    </root>
</configuration>

private void put(E eventObject) {
    if (this.neverBlock) {
        this.blockingQueue.offer(eventObject);
    } else {
        this.putUninterruptibly(eventObject);
    }
}

class Worker extends Thread {
    public void run() {
        while(parent.isStarted()) {
            parent.blockingQueue.drainTo(elements);
        }
    }
}