Package org.apache.nutch.fetcher

Class FetcherThreadEvent

java.lang.Object

org.apache.nutch.fetcher.FetcherThreadEvent

All Implemented Interfaces:

Serializable

public class FetcherThreadEvent
extends Object
implements Serializable

This class is used to capture the various events occurring at fetch time. These events are sent to a NutchPublisher implementation.

See Also:

Serialized Form

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static class	FetcherThreadEvent.PublishEventType	Type of event to specify start, end or reporting of a fetch item.

Constructor Summary

Constructors

Constructor	Description
FetcherThreadEvent(FetcherThreadEvent.PublishEventType eventType, String url)	Constructor to create an event to be published

Method Summary

Modifier and Type	Method	Description
void	addEventData(String key, Object value)	Add new data to the eventData object.
void	addOutlinksToEventData(Collection<Outlink> links)	Given a collection of lists this method will add it the oultink metadata
Map<String,Object>	getEventData()	Get event data
FetcherThreadEvent.PublishEventType	getEventType()	Get type of this event object
Long	getTimestamp()	Get timestamp of current event.
String	getUrl()	Get URL of this event
void	setEventData(Map<String,Object> eventData)	Set metadata to this even
void	setEventType(FetcherThreadEvent.PublishEventType eventType)	Set event type of this object
void	setTimestamp(Long timestamp)	Set timestamp for this event
void	setUrl(String url)	Set URL of this event (fetched page)

Methods inherited from class java.lang.Object

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

Constructor Detail

FetcherThreadEvent

public FetcherThreadEvent(FetcherThreadEvent.PublishEventType eventType,
                          String url)

Constructor to create an event to be published

Parameters:

eventType - Type of event being created

url - URL of the fetched page to which this event belongs to

Method Detail

getEventType

public FetcherThreadEvent.PublishEventType getEventType()

Get type of this event object

Returns:

Event type

setEventType

public void setEventType(FetcherThreadEvent.PublishEventType eventType)

Set event type of this object

Parameters:

eventType - Set event type

getEventData

public Map<String,Object> getEventData()

Get event data

Returns:

a Map of event data

setEventData

public void setEventData(Map<String,Object> eventData)

Set metadata to this even

Parameters:

eventData - A map containing important information relevant to this event (fetched page). Exeample - score, title, outlinks, content-type, etc

getUrl

public String getUrl()

Get URL of this event

Returns:

URL of this event

setUrl

public void setUrl(String url)

Set URL of this event (fetched page)

Parameters:

url - URL of the fetched page

addEventData

public void addEventData(String key,
                         Object value)

Add new data to the eventData object.

Parameters:

key - A key to refer to the data being added to this event

value - Data to be stored in the event referenced by the above key

addOutlinksToEventData

public void addOutlinksToEventData(Collection<Outlink> links)

Given a collection of lists this method will add it the oultink metadata

Parameters:

links - A collection of outlinks generating from the fetched page this event refers to

getTimestamp

public Long getTimestamp()

Get timestamp of current event.

Returns:

Timestamp

setTimestamp

public void setTimestamp(Long timestamp)

Set timestamp for this event

Parameters:

timestamp - Timestamp of the occurrence of this event