org.openqa.selenium.grid.node

Class Node

java.lang.Object

org.openqa.selenium.grid.node.Node

All Implemented Interfaces:

java.util.function.Predicate<org.openqa.selenium.remote.http.HttpRequest>, CommandHandler

Direct Known Subclasses:

LocalNode, RemoteNode

public abstract class Node
extends java.lang.Object
implements java.util.function.Predicate<org.openqa.selenium.remote.http.HttpRequest>, CommandHandler

A place where individual webdriver sessions are running. Those sessions may be in-memory, or only reachable via localhost and a network. Or they could be something else entirely.

This class responds to the following URLs:

Verb	URL Template	Meaning
POST	/se/grid/node/session	Attempts to start a new session for the given node. The posted data should be a json-serialized Capabilities instance. Returns a serialized Session. Subclasses of Node are expected to register the session with the SessionMap.
GET	/se/grid/node/session/{sessionId}	Finds the Session identified by sessionId and returns the JSON-serialized form.
DELETE	/se/grid/node/session/{sessionId}	Stops the Session identified by sessionId. It is expected that this will also cause the session to removed from the SessionMap.
GET	/se/grid/node/owner/{sessionId}	Allows the node to be queried about whether or not it owns the Session identified by sessionId. This returns a boolean.
*	/session/{sessionId}/*	The request is forwarded to the Session identified by sessionId. When the Quit command is called, the Session should remove itself from the SessionMap.

Field Summary

Fields

Modifier and Type	Field and Description
protected org.openqa.selenium.remote.tracing.DistributedTracer	tracer

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	Node(org.openqa.selenium.remote.tracing.DistributedTracer tracer, java.util.UUID id, java.net.URI uri)

Method Summary

Modifier and Type	Method and Description
void	execute(org.openqa.selenium.remote.http.HttpRequest req, org.openqa.selenium.remote.http.HttpResponse resp)
abstract void	executeWebDriverCommand(org.openqa.selenium.remote.http.HttpRequest req, org.openqa.selenium.remote.http.HttpResponse resp)
abstract HealthCheck	getHealthCheck()
java.util.UUID	getId()
abstract Session	getSession(org.openqa.selenium.remote.SessionId id)
abstract NodeStatus	getStatus()
java.net.URI	getUri()
protected abstract boolean	isSessionOwner(org.openqa.selenium.remote.SessionId id)
abstract boolean	isSupporting(org.openqa.selenium.Capabilities capabilities)
abstract java.util.Optional<CreateSessionResponse>	newSession(CreateSessionRequest sessionRequest)
abstract void	stop(org.openqa.selenium.remote.SessionId id)
boolean	test(org.openqa.selenium.remote.http.HttpRequest req)

Methods inherited from class java.lang.Object

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

Methods inherited from interface java.util.function.Predicate

and, isEqual, negate, or

Field Detail

tracer

protected final org.openqa.selenium.remote.tracing.DistributedTracer tracer

Constructor Detail

Node

protected Node(org.openqa.selenium.remote.tracing.DistributedTracer tracer,
               java.util.UUID id,
               java.net.URI uri)

Method Detail

getId

public java.util.UUID getId()

getUri

public java.net.URI getUri()

newSession

public abstract java.util.Optional<CreateSessionResponse> newSession(CreateSessionRequest sessionRequest)

executeWebDriverCommand

public abstract void executeWebDriverCommand(org.openqa.selenium.remote.http.HttpRequest req,
                                             org.openqa.selenium.remote.http.HttpResponse resp)

getSession

public abstract Session getSession(org.openqa.selenium.remote.SessionId id)
                            throws org.openqa.selenium.NoSuchSessionException

Throws:

org.openqa.selenium.NoSuchSessionException

stop

public abstract void stop(org.openqa.selenium.remote.SessionId id)
                   throws org.openqa.selenium.NoSuchSessionException

Throws:

org.openqa.selenium.NoSuchSessionException

isSessionOwner

protected abstract boolean isSessionOwner(org.openqa.selenium.remote.SessionId id)

isSupporting

public abstract boolean isSupporting(org.openqa.selenium.Capabilities capabilities)

getStatus

public abstract NodeStatus getStatus()

getHealthCheck

public abstract HealthCheck getHealthCheck()

test

public boolean test(org.openqa.selenium.remote.http.HttpRequest req)

Specified by:

test in interface java.util.function.Predicate<org.openqa.selenium.remote.http.HttpRequest>

execute

public void execute(org.openqa.selenium.remote.http.HttpRequest req,
                    org.openqa.selenium.remote.http.HttpResponse resp)
             throws java.io.IOException

Specified by:

execute in interface CommandHandler

Throws:

java.io.IOException