org.apache.tinkerpop.gremlin.driver

Class Cluster

java.lang.Object

org.apache.tinkerpop.gremlin.driver.Cluster

public final class Cluster
extends Object

A connection to a set of one or more Gremlin Server instances.

Author:

Stephen Mallette (http://stephen.genoprime.com)

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	Cluster.Builder

Method Summary

Modifier and Type	Method and Description
List<URI>	availableHosts()
static Cluster.Builder	build()
static Cluster.Builder	build(File configurationFile)
static Cluster.Builder	build(String address)
void	close()
CompletableFuture<Void>	closeAsync()
Client	connect() Creates a Client.ClusteredClient instance to this Cluster, meaning requests will be routed to one or more servers (depending on the cluster configuration), where each request represents the entirety of a transaction.
Client	connect(String sessionId) Creates a Client.SessionedClient instance to this Cluster, meaning requests will be routed to a single server (randomly selected from the cluster), where the same bindings will be available on each request.
void	init()
boolean	isClosed() Determines if the Cluster has completed its closing process after a call to close() or closeAsync().
boolean	isClosing() Determines if the Cluster is in the process of closing given a call to close() or closeAsync().
static Cluster	open() Create a Cluster with all default settings which will connect to one contact point at localhost.
static Cluster	open(String configurationFile) Create a Cluster using a YAML-based configuration file.
String	toString()

Methods inherited from class java.lang.Object

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

Method Detail

init

public void init()

connect

public Client connect()

Creates a Client.ClusteredClient instance to this Cluster, meaning requests will be routed to one or more servers (depending on the cluster configuration), where each request represents the entirety of a transaction. A commit or rollback (in case of error) is automatically executed at the end of the request.

connect

public Client connect(String sessionId)

Creates a Client.SessionedClient instance to this Cluster, meaning requests will be routed to a single server (randomly selected from the cluster), where the same bindings will be available on each request. Requests are bound to the same thread on the server and thus transactions may extend beyond the bounds of a single request. The transactions are managed by the user and must be committed or rolledback manually.

Parameters:

sessionId - user supplied id for the session which should be unique (a UUID is ideal).

toString

public String toString()

Overrides:

toString in class Object

build

public static Cluster.Builder build()

build

public static Cluster.Builder build(String address)

build

public static Cluster.Builder build(File configurationFile)
                             throws FileNotFoundException

Throws:

FileNotFoundException

open

public static Cluster open()

Create a Cluster with all default settings which will connect to one contact point at localhost.

open

public static Cluster open(String configurationFile)
                    throws Exception

Create a Cluster using a YAML-based configuration file.

Throws:

Exception

close

public void close()

closeAsync

public CompletableFuture<Void> closeAsync()

isClosing

public boolean isClosing()

Determines if the Cluster is in the process of closing given a call to close() or closeAsync().

isClosed

public boolean isClosed()

Determines if the Cluster has completed its closing process after a call to close() or closeAsync().

availableHosts

public List<URI> availableHosts()