Class TAIL

java.lang.Object

org.jpos.q2.cli.TAIL

All Implemented Interfaces:

EventListener, CLICommand, LogListener

public class TAIL
extends Object
implements CLICommand, LogListener

CLI command that subscribes to one or more named loggers and streams their events to the terminal until the user presses Enter.

Constructor Summary

Constructors

Constructor	Description
TAIL()	Default constructor; no instance state to initialise.

Method Summary

Modifier and Type	Method	Description
void	exec(CLIContext cli, String[] args)	Executes the CLI command.
LogEvent	log(LogEvent ev)	Processes a log event.
void	usage(CLIContext cli)	Prints command usage and lists the registered loggers.

Methods inherited from class Object

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

Methods inherited from interface LogListener

setLogEventWriter

Modifier and Type	Method	Description
default void	setLogEventWriter(LogEventWriter w)	Sets the log event writer for this listener.

Constructor Details

TAIL

public TAIL()

Default constructor; no instance state to initialise.

Method Details

exec

public void exec(CLIContext cli,
 String[] args)
          throws Exception

Description copied from interface: CLICommand

Executes the CLI command.

Specified by:

exec in interface CLICommand

Parameters:

cli - the CLI context

args - command arguments

Throws:

Exception - on error

usage

public void usage(CLIContext cli)

Prints command usage and lists the registered loggers.

Parameters:

cli - the CLI context to write to

log

public LogEvent log(LogEvent ev)

Description copied from interface: LogListener

Processes a log event.

Specified by:

log in interface LogListener

Parameters:

ev - the log event

Returns:

the (potentially modified) log event, or null to suppress it