Module io.helidon.webserver.transport.netty.epoll

Package io.helidon.webserver.transport.netty.epoll

Class EPollTransport

java.lang.Object

io.helidon.webserver.transport.netty.epoll.EPollTransport

All Implemented Interfaces:

Transport

public final class EPollTransport
extends Object
implements Transport

A Transport implementation based upon Netty's epoll-based native transport.

This Transport implementation is currently experimental and its API and implementation are subject to change.

Constructor Summary

Constructors

Constructor	Description
EPollTransport()

Method Summary

Modifier and Type	Method	Description
<T> Optional<T>	createTransportArtifact(Class<T> artifactType, String artifactName, ServerConfiguration config)	Returns an artifact corresponding to the supplied artifact coordinates, if one is available.
boolean	isAvailableFor(WebServer webServer)	Returns true when Epoll.isAvailable() returns true and false otherwise.

Methods inherited from class java.lang.Object

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

Constructor Details

EPollTransport

public EPollTransport()

Method Details

isAvailableFor

public boolean isAvailableFor(WebServer webServer)

Returns true when Epoll.isAvailable() returns true and false otherwise.

Specified by:

isAvailableFor in interface Transport

Parameters:

webServer - the WebServer implementation in a deliberately undefined state and currently being constructed

Returns:

true when Epoll.isAvailable() returns true; false otherwise

createTransportArtifact

public <T> Optional<T> createTransportArtifact(Class<T> artifactType,
 String artifactName,
 ServerConfiguration config)

Returns an artifact corresponding to the supplied artifact coordinates, if one is available.

Specifically, this method will return a non-empty Optional only if one of the following conditions is true:

• artifactType is a subtype of EventLoopGroup and artifactName is exactly equal to either bossGroup or workerGroup
• artifactType is a subtype of ChannelFactory and artifactName is exactly equal to serverChannelFactory

Specified by:

createTransportArtifact in interface Transport

Type Parameters:

T - the type of the transport artifact

Parameters:

artifactType - a Class indicating the kind of artifact to be returned; must not be null; may usefully only be a subtype of either EventLoopGroup or ChannelFactory<? extends ServerChannel>

artifactName - a String indicating which of possibly several artifacts of the same kind to be returned; must not be null

config - the ServerConfiguration in effect; must not be null

Returns:

an Optional, which may be empty but which will never be null

Throws:

NullPointerException - if any argument is null

See Also:

• Epoll
• EpollEventLoopGroup
• EpollServerSocketChannel