Package org.graylog.plugins.netflow.transport

Class NetFlowUdpTransport

java.lang.Object

org.graylog2.plugin.inputs.transports.NettyTransport

org.graylog2.inputs.transports.UdpTransport

org.graylog.plugins.netflow.transport.NetFlowUdpTransport

All Implemented Interfaces:

Transport

public class NetFlowUdpTransport
extends UdpTransport

This UDP transport is largely identical to its superclass, but replaces the codec aggregator and its handler with custom implementations that are able to pass the remote address. Without the remote address the NetFlow V9 code cannot distinguish between flows from different exporters and thus might handle template flows incorrectly should they differ between exporters.

See Also:

• RFC 3953 - Source ID

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static class	NetFlowUdpTransport.Config
static interface	NetFlowUdpTransport.Factory

Field Summary

Fields inherited from class org.graylog2.plugin.inputs.transports.NettyTransport

CK_BIND_ADDRESS, CK_NUMBER_WORKER_THREADS, CK_PORT, CK_RECV_BUFFER_SIZE, eventLoopGroupFactory, localRegistry, socketAddress, throughputCounter, workerThreads

Constructor Summary

Constructors

Constructor	Description
NetFlowUdpTransport(Configuration configuration, EventLoopGroupFactory eventLoopGroupFactory, NettyTransportConfiguration nettyTransportConfiguration, ThroughputCounter throughputCounter, LocalMetricRegistry localRegistry)

Method Summary

Modifier and Type	Method	Description
protected LinkedHashMap<String,Callable<? extends io.netty.channel.ChannelHandler>>	getChannelHandlers(MessageInput input)	Subclasses can override this to add additional channel handlers to the Netty ChannelPipeline to support additional features.

Methods inherited from class org.graylog2.inputs.transports.UdpTransport

getChildChannelHandlers, getLocalAddress, launch, stop

Methods inherited from class org.graylog2.plugin.inputs.transports.NettyTransport

getAggregator, getChannelInitializer, getCustomChildChannelHandlers, getMetricSet, getRecvBufferSize, setMessageAggregator

Methods inherited from class java.lang.Object

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

Constructor Details

NetFlowUdpTransport

@Inject
public NetFlowUdpTransport(Configuration configuration,
 EventLoopGroupFactory eventLoopGroupFactory,
 NettyTransportConfiguration nettyTransportConfiguration,
 ThroughputCounter throughputCounter,
 LocalMetricRegistry localRegistry)

Method Details

getChannelHandlers

protected LinkedHashMap<String,Callable<? extends io.netty.channel.ChannelHandler>> getChannelHandlers(MessageInput input)

Description copied from class: NettyTransport

Subclasses can override this to add additional channel handlers to the Netty ChannelPipeline to support additional features. Some common use cases are to add connection counters or traffic shapers.

Overrides:

getChannelHandlers in class UdpTransport

Parameters:

input - The MessageInput for which these channel handlers are being added

Returns:

list of initial channel handlers to add to the Netty channel pipeline