io.aeron.samples.cluster.tutorial

Class BasicAuctionClusterClient

java.lang.Object

io.aeron.samples.cluster.tutorial.BasicAuctionClusterClient

All Implemented Interfaces:

EgressListener

public class BasicAuctionClusterClient
extends Object
implements EgressListener

Client for communicating with BasicAuctionClusteredService.

Constructor Summary

Constructors

Constructor and Description
BasicAuctionClusterClient(long customerId, int numOfBids, int bidIntervalMs) Construct a new cluster client for the auction.

Method Summary

Modifier and Type	Method and Description
static String	ingressEndpoints(List<String> hostnames) Ingress endpoints generated from a list of hostnames.
static void	main(String[] args) Main method for launching the process.
void	onMessage(long clusterSessionId, long timestamp, DirectBuffer buffer, int offset, int length, Header header) Message returned from the clustered service.
void	onNewLeader(long clusterSessionId, long leadershipTermId, int leaderMemberId, String ingressEndpoints) Event indicating a new leader has been elected.
void	onSessionEvent(long correlationId, long clusterSessionId, long leadershipTermId, int leaderMemberId, EventCode code, String detail) Session event emitted from the cluster which after connect can indicate an error or session close.

Methods inherited from class java.lang.Object

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

Methods inherited from interface io.aeron.cluster.client.EgressListener

onAdminResponse

Constructor Detail

BasicAuctionClusterClient

public BasicAuctionClusterClient(long customerId,
                                 int numOfBids,
                                 int bidIntervalMs)

Construct a new cluster client for the auction.

Parameters:

customerId - for the client.

numOfBids - to make as a client.

bidIntervalMs - between the bids.

Method Detail

onMessage

public void onMessage(long clusterSessionId,
                      long timestamp,
                      DirectBuffer buffer,
                      int offset,
                      int length,
                      Header header)

Message returned from the clustered service.

Specified by:

onMessage in interface EgressListener

Parameters:

clusterSessionId - to which the message belongs.

timestamp - at which the correlated ingress was sequenced in the cluster.

buffer - containing the message.

offset - at which the message begins.

length - of the message in bytes.

header - Aeron header associated with the message fragment.

onSessionEvent

public void onSessionEvent(long correlationId,
                           long clusterSessionId,
                           long leadershipTermId,
                           int leaderMemberId,
                           EventCode code,
                           String detail)

Session event emitted from the cluster which after connect can indicate an error or session close.

Specified by:

onSessionEvent in interface EgressListener

Parameters:

correlationId - associated with the cluster ingress.

clusterSessionId - to which the event belongs.

leadershipTermId - for identifying the active term of leadership

leaderMemberId - identity of the active leader.

code - to indicate the type of event.

detail - Textual detail to explain the event.

onNewLeader

public void onNewLeader(long clusterSessionId,
                        long leadershipTermId,
                        int leaderMemberId,
                        String ingressEndpoints)

Event indicating a new leader has been elected.

Specified by:

onNewLeader in interface EgressListener

Parameters:

clusterSessionId - to which the event belongs.

leadershipTermId - for identifying the active term of leadership

leaderMemberId - identity of the active leader.

ingressEndpoints - for connecting to the cluster which can be updated due to dynamic membership.

ingressEndpoints

public static String ingressEndpoints(List<String> hostnames)

Ingress endpoints generated from a list of hostnames.

Parameters:

hostnames - for the cluster members.

Returns:

a formatted string of ingress endpoints for connecting to a cluster.

main

public static void main(String[] args)

Main method for launching the process.

Parameters:

args - passed to the process.