org.apache.oozie.util
Class XLog.Info

java.lang.Object
  org.apache.oozie.util.XLog.Info

Enclosing class:

XLog

public static class XLog.Info
extends Object

LogInfo stores contextual information to create log prefixes.

LogInfo uses a ThreadLocal to propagate the context.

LogInfo context parameters are configurable singletons.

Constructor Summary

XLog.Info()
Constructs an empty LogInfo.

XLog.Info(XLog.Info logInfo)
Construct a new LogInfo object from an existing one.

Method Summary

void	clear() Clear all parameters set in this logInfo instance.
void	clearParameter(String name) Clear a parameter value from the LogInfo context.
String	createPrefix() Create the LogInfo prefix using the current parameter values.
static void	defineParameter(String name) Define a LogInfo context parameter.
static XLog.Info	get() Return the LogInfo instance in context.
String	getParameter(String name) Returns the specified parameter.
static void	remove() Remove the LogInfo instance in context.
static void	reset() Remove all defined context parameters.
void	setParameter(String name, String value) Set a parameter value in the LogInfo context.
void	setParameters(XLog.Info logInfo) Set all the parameter values from the given LogInfo.

Methods inherited from class java.lang.Object

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

Constructor Detail

XLog.Info

public XLog.Info()

Constructs an empty LogInfo.

XLog.Info

public XLog.Info(XLog.Info logInfo)

Construct a new LogInfo object from an existing one.

Parameters:

logInfo - LogInfo object to copy parameters from.

Method Detail

defineParameter

public static void defineParameter(String name)

Define a LogInfo context parameter.

The parameter name and its contextual value will be used to create all prefixes.

Parameters:

name - name of the context parameter.

reset

public static void reset()

Remove all defined context parameters.

get

public static XLog.Info get()

Return the LogInfo instance in context.

Returns:

The thread local instance of LogInfo

remove

public static void remove()

Remove the LogInfo instance in context.

clear

public void clear()

Clear all parameters set in this logInfo instance.

setParameter

public void setParameter(String name,
                         String value)

Set a parameter value in the LogInfo context.

Parameters:

name - parameter name.

value - parameter value.

getParameter

public String getParameter(String name)

Returns the specified parameter.

Parameters:

name - parameter name.

Returns:

the parameter value.

clearParameter

public void clearParameter(String name)

Clear a parameter value from the LogInfo context.

Parameters:

name - parameter name.

setParameters

public void setParameters(XLog.Info logInfo)

Set all the parameter values from the given LogInfo.

Parameters:

logInfo - LogInfo to copy all parameter values from.

createPrefix

public String createPrefix()

Create the LogInfo prefix using the current parameter values.

Returns:

the LogInfo prefix.