Class MultiplexerLogHandler

java.lang.Object

java.util.logging.Handler

com.scivicslab.actoriac.accumulator.MultiplexerLogHandler

public class MultiplexerLogHandler
extends Handler

A java.util.logging Handler that forwards log messages to MultiplexerAccumulatorIIAR.

This handler bridges java.util.logging with the MultiplexerAccumulator system, allowing all log messages to be captured in the same output destinations (console, file, database) as command output and cowsay.

Log Format

Log messages are formatted as:

2026-01-17T12:27:54+09:00 INFO Starting workflow: main-collect-sysinfo

Message Format

Messages sent to MultiplexerAccumulator:

{
  "source": "cli",
  "type": "log-INFO",
  "data": "2026-01-17T12:27:54+09:00 INFO Starting workflow: main-collect-sysinfo"
}

Usage

// After registering MultiplexerAccumulatorIIAR
MultiplexerLogHandler logHandler = new MultiplexerLogHandler(system);
Logger.getLogger("").addHandler(logHandler);

Since:

2.12.0

Author:

devteam@scivicslab.com

Field Summary

Fields

Modifier and Type	Field	Description
private boolean	closed
private static final DateTimeFormatter	ISO_FORMATTER
private final com.scivicslab.pojoactor.workflow.IIActorSystem	system
private static final ZoneId	SYSTEM_ZONE

Constructor Summary

Constructors

Constructor	Description
MultiplexerLogHandler(com.scivicslab.pojoactor.workflow.IIActorSystem system)	Constructs a MultiplexerLogHandler.

Method Summary

Modifier and Type	Method	Description
void	close()
void	flush()
private String	formatMessage(LogRecord record)	Formats the log message, including any throwable if present.
private String	getSourceName(LogRecord record)	Determines the source name from the log record.
void	publish(LogRecord record)

Methods inherited from class Handler

getEncoding, getErrorManager, getFilter, getFormatter, getLevel, isLoggable, reportError, setEncoding, setErrorManager, setFilter, setFormatter, setLevel

Methods inherited from class Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Details

ISO_FORMATTER

private static final DateTimeFormatter ISO_FORMATTER

SYSTEM_ZONE

private static final ZoneId SYSTEM_ZONE

system

private final com.scivicslab.pojoactor.workflow.IIActorSystem system

closed

private volatile boolean closed

Constructor Details

MultiplexerLogHandler

public MultiplexerLogHandler(com.scivicslab.pojoactor.workflow.IIActorSystem system)

Constructs a MultiplexerLogHandler.

Parameters:

system - the actor system to retrieve outputMultiplexer from

Method Details

publish

public void publish(LogRecord record)

Specified by:

publish in class Handler

formatMessage

private String formatMessage(LogRecord record)

Formats the log message, including any throwable if present.

getSourceName

private String getSourceName(LogRecord record)

Determines the source name from the log record.

flush

public void flush()

Specified by:

flush in class Handler

close

public void close()
           throws SecurityException

Specified by:

close in class Handler

Throws:

SecurityException