org.apache.flume
Interface ChannelSelector

All Superinterfaces:

Configurable, NamedComponent

All Known Implementing Classes:

AbstractChannelSelector, MultiplexingChannelSelector, ReplicatingChannelSelector

public interface ChannelSelector
extends NamedComponent, Configurable

Allows the selection of a subset of channels from the given set based on its implementation policy. Different implementations of this interface embody different policies that affect the choice of channels that a source will push the incoming events to.

Method Summary

List<Channel>	getAllChannels()
List<Channel>	getOptionalChannels(Event event) Returns a list of optional channels.
List<Channel>	getRequiredChannels(Event event) Returns a list of required channels.
void	setChannels(List<Channel> channels)

Methods inherited from interface org.apache.flume.NamedComponent

getName, setName

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

configure

Method Detail

setChannels

void setChannels(List<Channel> channels)

Parameters:

channels - all channels the selector could select from.

getRequiredChannels

List<Channel> getRequiredChannels(Event event)

Returns a list of required channels. A failure in writing the event to these channels must be communicated back to the source that received this event.

Parameters:

event -

Returns:

the list of required channels that this selector has selected for the given event.

getOptionalChannels

List<Channel> getOptionalChannels(Event event)

Returns a list of optional channels. A failure in writing the event to these channels must be ignored.

Parameters:

event -

Returns:

the list of optional channels that this selector has selected for the given event.

getAllChannels

List<Channel> getAllChannels()

Returns:

the list of all channels that this selector is configured to work with.