Package org.apache.nutch.publisher

Interface NutchPublisher

All Superinterfaces:

Configurable, Pluggable

All Known Implementing Classes:

NutchPublishers, RabbitMQPublisherImpl

public interface NutchPublisher
extends Configurable, Pluggable

All publisher subscriber model implementations should implement this interface.

Field Summary

Fields

Modifier and Type	Field	Description
static final String	X_POINT_ID

Method Summary

Modifier and Type	Method	Description
void	publish(Object event, Configuration conf)	This method publishes the event.
boolean	setConfig(Configuration conf)	Use implementation specific configurations

Methods inherited from interface org.apache.hadoop.conf.Configurable

getConf, setConf

Field Details

X_POINT_ID

static final String X_POINT_ID

Method Details

setConfig

boolean setConfig(Configuration conf)

Use implementation specific configurations

Parameters:

conf - Configuration to be used

Returns:

true if set, false otherwise

publish

void publish(Object event,
 Configuration conf)

This method publishes the event. Make sure that the event is a Java POJO to avoid Jackson JSON conversion errors. Currently we use the FetcherThreadEvent

Parameters:

event - the Object (event) to publish

conf - Configuration to be used