org.apache.flume.source

Class NetcatSource

java.lang.Object

org.apache.flume.source.AbstractSource

org.apache.flume.source.NetcatSource

All Implemented Interfaces:

Configurable, EventDrivenSource, LifecycleAware, NamedComponent, Source

public class NetcatSource
extends AbstractSource
implements Configurable, EventDrivenSource

A netcat-like source that listens on a given port and turns each line of text into an event.

This source, primarily built for testing and exceedingly simple systems, acts like nc -k -l [host] [port]. In other words, it opens a specified port and listens for data. The expectation is that the supplied data is newline separated text. Each line of text is turned into a Flume event and sent via the connected channel.

Most testing has been done by using the nc client but other, similarly implemented, clients should work just fine.

Configuration options

Parameter	Description	Unit / Type	Default
bind	The hostname or IP to which the source will bind.	Hostname or IP / String	none (required)
port	The port to which the source will bind and listen for events.	TCP port / int	none (required)
max-line-length	The maximum # of chars a line can be per event (including newline).	Number of UTF-8 characters / int	512

Metrics

TODO

Constructor Summary

Constructors

Constructor and Description
NetcatSource()

Method Summary

Methods

Modifier and Type	Method and Description
void	configure(Context context) Request the implementing class to (re)configure itself.
void	start() Starts a service or component.
void	stop() Stops a service or component.

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

getChannelProcessor, getLifecycleState, getName, setChannelProcessor, setName, toString

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

NetcatSource

public NetcatSource()

Method Detail

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 guarrantees on when configure might be called.

Specified by:

configure in interface Configurable

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