DatabaseLogHandler

classin packageklyn.logging.handler

public final class DatabaseLogHandler extends AbstractLogHandler implements AutoClosable

AbstractLogHandler

└ DatabaseLogHandler

All Implemented Interfaces: AutoClosable

Inserts log events into a SQL table through Klyn's database API.

The target table must expose columns event_time, level, logger, message, fields_json, exception, trace_id and span_id in that order. Schema ownership remains with the application.

Example

import klyn.databases.sql
import klyn.logging.handler

connection = DriverManager.getConnection("mariadb://localhost/logs", "app", "secret")
handler = DatabaseLogHandler(connection, "application_logs")

Inherited Properties

propertyInherited Properties from AbstractLogHandler: minimumLevel

Constructors

Modifier and Type	Member	Description
public	DatabaseLogHandler `DatabaseLogHandler( connection as Connection, table as String = "application_logs", minimumLevel as LogLevel = LogLevel.TRACE, ownsConnection as Boolean = false )`	Creates a database handler from an existing connection.

Methods

Modifier and Type	Member	Description
public override	close `close() as Void`	Closes an owned connection.
public static	connect `connect( url as String, login as String = "", password as String = "", table as String = "application_logs", minimumLevel as LogLevel = LogLevel.TRACE ) as DatabaseLogHandler`	Opens an owned connection and creates a database handler.
public override	flush `flush() as Void`	Database statements are executed immediately.
public override	handle `handle(event as LogEvent) as Void`	Inserts one event with a prepared statement.

Inherited Methods

methodInherited Methods from AbstractLogHandler: accepts, close, flush, handle

methodInherited Methods from AutoClosable: close

methodInherited Methods from LogHandler: accepts, flush, handle