com.github.danielwegener.logback.kafka.keying

Class HostNameKeyingStrategy

java.lang.Object

ch.qos.logback.core.spi.ContextAwareBase

com.github.danielwegener.logback.kafka.keying.HostNameKeyingStrategy

All Implemented Interfaces:

ch.qos.logback.core.spi.ContextAware, ch.qos.logback.core.spi.LifeCycle, KeyingStrategy<Object>

public class HostNameKeyingStrategy
extends ch.qos.logback.core.spi.ContextAwareBase
implements KeyingStrategy<Object>, ch.qos.logback.core.spi.LifeCycle

This strategy uses the HOSTNAME as kafka message key. This is useful because it ensures that all log messages issued by this host will remain in the correct order for any consumer. But this strategy can lead to uneven log distribution for a small number of hosts (compared to the number of partitions).

Since:

0.0.1

Field Summary

Fields inherited from class ch.qos.logback.core.spi.ContextAwareBase

context

Constructor Summary

Constructors

Constructor and Description
HostNameKeyingStrategy()

Method Summary

Modifier and Type	Method and Description
byte[]	createKey(Object e) creates a byte array key for the given ILoggingEvent
boolean	isStarted()
void	setContext(ch.qos.logback.core.Context context)
void	start()
void	stop()

Methods inherited from class ch.qos.logback.core.spi.ContextAwareBase

addError, addError, addInfo, addInfo, addStatus, addWarn, addWarn, getContext, getDeclaredOrigin, getStatusManager

Methods inherited from class java.lang.Object

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

Constructor Detail

HostNameKeyingStrategy

public HostNameKeyingStrategy()

Method Detail

setContext

public void setContext(ch.qos.logback.core.Context context)

Specified by:

setContext in interface ch.qos.logback.core.spi.ContextAware

Overrides:

setContext in class ch.qos.logback.core.spi.ContextAwareBase

createKey

public byte[] createKey(Object e)

Description copied from interface: KeyingStrategy

creates a byte array key for the given ILoggingEvent

Specified by:

createKey in interface KeyingStrategy<Object>

Parameters:

e - the logging event

Returns:

a key

start

public void start()

Specified by:

start in interface ch.qos.logback.core.spi.LifeCycle

stop

public void stop()

Specified by:

stop in interface ch.qos.logback.core.spi.LifeCycle

isStarted

public boolean isStarted()

Specified by:

isStarted in interface ch.qos.logback.core.spi.LifeCycle