com.spotify.folsom.reconnect

Class ReconnectingClient

java.lang.Object

com.spotify.folsom.AbstractRawMemcacheClient

com.spotify.folsom.reconnect.ReconnectingClient

All Implemented Interfaces:

ObservableClient, RawMemcacheClient

public class ReconnectingClient
extends AbstractRawMemcacheClient

Field Summary

Fields

Modifier and Type	Field and Description
private HostAndPort	address
private BackoffFunction	backoffFunction
private RawMemcacheClient	client
private java.lang.Throwable	connectionFailure
private Connector	connector
private org.slf4j.Logger	log
private int	reconnectCount
private static java.util.concurrent.ScheduledExecutorService	SCHEDULED_EXECUTOR_SERVICE
private java.util.concurrent.ScheduledExecutorService	scheduledExecutorService
private boolean	stayConnected

Constructor Summary

Constructors

Modifier	Constructor and Description
private	ReconnectingClient(BackoffFunction backoffFunction, java.util.concurrent.ScheduledExecutorService scheduledExecutorService, Connector connector, Authenticator authenticator, HostAndPort address)
(package private)	ReconnectingClient(BackoffFunction backoffFunction, java.util.concurrent.ScheduledExecutorService scheduledExecutorService, Connector connector, HostAndPort address)
	ReconnectingClient(BackoffFunction backoffFunction, java.util.concurrent.ScheduledExecutorService scheduledExecutorService, HostAndPort address, int outstandingRequestLimit, int batchSize, boolean binary, Authenticator authenticator, java.util.concurrent.Executor executor, long connectionTimeoutMillis, java.nio.charset.Charset charset, Metrics metrics, int maxSetLength, io.netty.channel.EventLoopGroup eventLoopGroup, java.lang.Class<? extends io.netty.channel.Channel> channelClass)

Method Summary

Modifier and Type	Method and Description
java.lang.Throwable	getConnectionFailure() Returns the unrecoverable connection failure, if any.
boolean	isConnected() Is the client connected to a server?
int	numActiveConnections() How many active socket connections do we have (i.e.
int	numTotalConnections() How many actual socket connections do we have, including currently disconnected clients.
private void	onFailure()
private void	retry()
<T> java.util.concurrent.CompletionStage<T>	send(Request<T> request)
void	shutdown() Shut down the client.
static java.util.concurrent.ScheduledExecutorService	singletonExecutor()
java.lang.String	toString()

Methods inherited from class com.spotify.folsom.AbstractRawMemcacheClient

notifyConnectionChange, registerForConnectionChanges, unregisterForConnectionChanges

Methods inherited from class java.lang.Object

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

Methods inherited from interface com.spotify.folsom.ObservableClient

awaitConnected, awaitDisconnected, awaitFullyConnected, awaitFullyDisconnected, awaitFuture, connectFuture, disconnectFuture, fullyConnectedFuture, fullyDisconnectFuture

Field Detail

SCHEDULED_EXECUTOR_SERVICE

private static final java.util.concurrent.ScheduledExecutorService SCHEDULED_EXECUTOR_SERVICE

log

private final org.slf4j.Logger log

backoffFunction

private final BackoffFunction backoffFunction

scheduledExecutorService

private final java.util.concurrent.ScheduledExecutorService scheduledExecutorService

connector

private final Connector connector

address

private final HostAndPort address

client

private volatile RawMemcacheClient client

reconnectCount

private volatile int reconnectCount

stayConnected

private volatile boolean stayConnected

connectionFailure

private volatile java.lang.Throwable connectionFailure

Constructor Detail

ReconnectingClient

public ReconnectingClient(BackoffFunction backoffFunction,
                          java.util.concurrent.ScheduledExecutorService scheduledExecutorService,
                          HostAndPort address,
                          int outstandingRequestLimit,
                          int batchSize,
                          boolean binary,
                          Authenticator authenticator,
                          java.util.concurrent.Executor executor,
                          long connectionTimeoutMillis,
                          java.nio.charset.Charset charset,
                          Metrics metrics,
                          int maxSetLength,
                          io.netty.channel.EventLoopGroup eventLoopGroup,
                          java.lang.Class<? extends io.netty.channel.Channel> channelClass)

ReconnectingClient

private ReconnectingClient(BackoffFunction backoffFunction,
                           java.util.concurrent.ScheduledExecutorService scheduledExecutorService,
                           Connector connector,
                           Authenticator authenticator,
                           HostAndPort address)

ReconnectingClient

ReconnectingClient(BackoffFunction backoffFunction,
                   java.util.concurrent.ScheduledExecutorService scheduledExecutorService,
                   Connector connector,
                   HostAndPort address)

Method Detail

send

public <T> java.util.concurrent.CompletionStage<T> send(Request<T> request)

shutdown

public void shutdown()

Description copied from interface: RawMemcacheClient

Shut down the client. Use ObservableClient.registerForConnectionChanges(ConnectionChangeListener) to to get notified when it has (possibly) finished shutting down

isConnected

public boolean isConnected()

Description copied from interface: ObservableClient

Is the client connected to a server?

Returns:

true if the client is connected

getConnectionFailure

public java.lang.Throwable getConnectionFailure()

Description copied from interface: ObservableClient

Returns the unrecoverable connection failure, if any.

Returns:

null, if there's no connection failure

numTotalConnections

public int numTotalConnections()

Description copied from interface: RawMemcacheClient

How many actual socket connections do we have, including currently disconnected clients.

Returns:

the number of total connections

numActiveConnections

public int numActiveConnections()

Description copied from interface: RawMemcacheClient

How many active socket connections do we have (i.e. not disconnected)

Returns:

the number of active connections

retry

private void retry()

onFailure

private void onFailure()

singletonExecutor

public static java.util.concurrent.ScheduledExecutorService singletonExecutor()

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object