org.apache.hadoop.chukwa.inputtools.log4j

Class Log4JMetricsContext

java.lang.Object

org.apache.hadoop.metrics.spi.AbstractMetricsContext

org.apache.hadoop.chukwa.inputtools.log4j.Log4JMetricsContext

All Implemented Interfaces:

org.apache.hadoop.metrics.MetricsContext

public class Log4JMetricsContext
extends AbstractMetricsContext

Field Summary

Fields

Modifier and Type	Field and Description
protected String	host
protected static String	HOST_PROPERTY
protected int	period
protected static String	PERIOD_PROPERTY
protected int	port
protected static String	PORT_PROPERTY

Fields inherited from interface org.apache.hadoop.metrics.MetricsContext

DEFAULT_PERIOD

Constructor Summary

Constructors

Constructor and Description
Log4JMetricsContext() Creates a new instance of MetricsContext

Method Summary

Methods

Modifier and Type	Method and Description
protected void	emitRecord(String contextName, String recordName, org.apache.hadoop.metrics.spi.OutputRecord outRec) Sends a record to the metrics system.
Map<String,Collection<org.apache.hadoop.metrics.spi.OutputRecord>>	getAllRecords()
void	init(String contextName, org.apache.hadoop.metrics.ContextFactory factory) Initializes the context.

Methods inherited from class org.apache.hadoop.metrics.spi.AbstractMetricsContext

close, createRecord, flush, getAttribute, getAttributeTable, getContextFactory, getContextName, getPeriod, isMonitoring, newRecord, registerUpdater, remove, setPeriod, startMonitoring, stopMonitoring, unregisterUpdater, update

Methods inherited from class java.lang.Object

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

Field Detail

PERIOD_PROPERTY

protected static final String PERIOD_PROPERTY

See Also:

Constant Field Values

HOST_PROPERTY

protected static final String HOST_PROPERTY

See Also:

Constant Field Values

PORT_PROPERTY

protected static final String PORT_PROPERTY

See Also:

Constant Field Values

period

protected int period

host

protected String host

port

protected int port

Constructor Detail

Log4JMetricsContext

public Log4JMetricsContext()

Creates a new instance of MetricsContext

Method Detail

init

public void init(String contextName,
        org.apache.hadoop.metrics.ContextFactory factory)

Description copied from class: AbstractMetricsContext

Initializes the context.

Specified by:

init in interface org.apache.hadoop.metrics.MetricsContext

Overrides:

init in class AbstractMetricsContext

emitRecord

protected void emitRecord(String contextName,
              String recordName,
              org.apache.hadoop.metrics.spi.OutputRecord outRec)
                   throws IOException

Description copied from class: AbstractMetricsContext

Sends a record to the metrics system.

Specified by:

emitRecord in class AbstractMetricsContext

Throws:

IOException

getAllRecords

public Map<String,Collection<org.apache.hadoop.metrics.spi.OutputRecord>> getAllRecords()