org.apache.flume.source.taildir

Class TaildirSource

java.lang.Object

org.apache.flume.source.AbstractSource

org.apache.flume.source.taildir.TaildirSource

All Implemented Interfaces:

Configurable, LifecycleAware, NamedComponent, PollableSource, Source

public class TaildirSource
extends AbstractSource
implements PollableSource, Configurable

Nested Class Summary

Nested classes/interfaces inherited from interface org.apache.flume.PollableSource

PollableSource.Status

Constructor Summary

Constructors

Constructor and Description
TaildirSource()

Method Summary

Methods

Modifier and Type	Method and Description
void	configure(Context context) Request the implementing class to (re)configure itself.
long	getBackOffSleepIncrement()
long	getMaxBackOffSleepInterval()
protected SourceCounter	getSourceCounter()
PollableSource.Status	process() Attempt to pull an item from the source, sending it to the channel.
void	start() Starts a service or component.
void	stop() Stops a service or component.
String	toString()

Methods inherited from class org.apache.flume.source.AbstractSource

getChannelProcessor, getLifecycleState, getName, setChannelProcessor, setName

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.apache.flume.Source

getChannelProcessor, setChannelProcessor

Methods inherited from interface org.apache.flume.lifecycle.LifecycleAware

getLifecycleState

Methods inherited from interface org.apache.flume.NamedComponent

getName, setName

Constructor Detail

TaildirSource

public TaildirSource()

Method Detail

start

public void start()

Description copied from interface: LifecycleAware

Starts a service or component.

Implementations should determine the result of any start logic and effect the return value of LifecycleAware.getLifecycleState() accordingly.

Specified by:

start in interface LifecycleAware

Overrides:

start in class AbstractSource

stop

public void stop()

Description copied from interface: LifecycleAware

Stops a service or component.

Implementations should determine the result of any stop logic and effect the return value of LifecycleAware.getLifecycleState() accordingly.

Specified by:

stop in interface LifecycleAware

Overrides:

stop in class AbstractSource

toString

public String toString()

Overrides:

toString in class AbstractSource

configure

public void configure(Context context)

Description copied from interface: Configurable

Request the implementing class to (re)configure itself.

When configuration parameters are changed, they must be reflected by the component asap.

There are no thread safety guarantees on when configure might be called.

Specified by:

configure in interface Configurable

getSourceCounter

protected SourceCounter getSourceCounter()

process

public PollableSource.Status process()

Description copied from interface: PollableSource

Attempt to pull an item from the source, sending it to the channel.

When driven by an EventDrivenSourceRunner process is guaranteed to be called only by a single thread at a time, with no concurrency. Any other mechanism driving a pollable source must follow the same semantics.

Specified by:

process in interface PollableSource

Returns:

READY if one or more events were created from the source. BACKOFF if no events could be created from the source.

getBackOffSleepIncrement

public long getBackOffSleepIncrement()

Specified by:

getBackOffSleepIncrement in interface PollableSource

getMaxBackOffSleepInterval

public long getMaxBackOffSleepInterval()

Specified by:

getMaxBackOffSleepInterval in interface PollableSource