com.couchbase.client

Class CouchbaseMemcachedConnection

java.lang.Object

java.lang.Thread

net.spy.memcached.compat.SpyThread

net.spy.memcached.MemcachedConnection

com.couchbase.client.CouchbaseMemcachedConnection

All Implemented Interfaces:

Reconfigurable, java.lang.Runnable

public class CouchbaseMemcachedConnection
extends net.spy.memcached.MemcachedConnection
implements Reconfigurable

Couchbase implementation of CouchbaseConnection. The behavior of a CouchbaseMemcached connection extends spy's MemcachedConnection by handling reconfiguration events. In a Couchbase deployment scenario, reconfiguration updates may notify the client of nodes to be added to or removed from the cluster. This class provides that functionality by extending the MemcachedConnection and adding a method to handle reconfiguration of a bucket.

Nested Class Summary

Nested classes/interfaces inherited from class java.lang.Thread

java.lang.Thread.State, java.lang.Thread.UncaughtExceptionHandler

Field Summary

Fields

Modifier and Type	Field and Description
protected boolean	reconfiguring

Fields inherited from class net.spy.memcached.MemcachedConnection

addedQueue, failureMode, locator, metrics, metricType, nodesToShutdown, running, selector, shutDown

Fields inherited from class java.lang.Thread

MAX_PRIORITY, MIN_PRIORITY, NORM_PRIORITY

Constructor Summary

Constructors

Constructor and Description
CouchbaseMemcachedConnection(int bufSize, CouchbaseConnectionFactory f, java.util.List<java.net.InetSocketAddress> a, java.util.Collection<net.spy.memcached.ConnectionObserver> obs, net.spy.memcached.FailureMode fm, net.spy.memcached.OperationFactory opfactory)

Method Summary

Modifier and Type	Method and Description
protected void	addOperation(java.lang.String key, net.spy.memcached.ops.Operation o)
protected void	handleWokenUpSelector() Make sure that if the selector is woken up manually for an extended period of time that the sockets are still alive.
protected void	queueReconnect(net.spy.memcached.MemcachedNode node) Only queue for reconnect if the given node is still part of the cluster.
void	reconfigure(Bucket bucket) Call on a configuration update.
void	run() Infinitely loop processing IO.

Methods inherited from class net.spy.memcached.MemcachedConnection

addObserver, addOperation, addOperations, broadcastOperation, broadcastOperation, checkState, connectionsStatus, createConnections, enqueueOperation, getLocator, handleIO, handleRetryInformation, insertOperation, isShutDown, opSucceeded, opTimedOut, redistributeOperation, redistributeOperations, registerMetrics, removeObserver, retryOperation, shutdown, toString

Methods inherited from class net.spy.memcached.compat.SpyThread

getLogger

Methods inherited from class java.lang.Thread

activeCount, checkAccess, clone, countStackFrames, currentThread, destroy, dumpStack, enumerate, getAllStackTraces, getContextClassLoader, getDefaultUncaughtExceptionHandler, getId, getName, getPriority, getStackTrace, getState, getThreadGroup, getUncaughtExceptionHandler, holdsLock, interrupt, interrupted, isAlive, isDaemon, isInterrupted, join, join, join, resume, setContextClassLoader, setDaemon, setDefaultUncaughtExceptionHandler, setName, setPriority, setUncaughtExceptionHandler, sleep, sleep, start, stop, stop, suspend, yield

Methods inherited from class java.lang.Object

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

Field Detail

reconfiguring

protected volatile boolean reconfiguring

Constructor Detail

CouchbaseMemcachedConnection

public CouchbaseMemcachedConnection(int bufSize,
                                    CouchbaseConnectionFactory f,
                                    java.util.List<java.net.InetSocketAddress> a,
                                    java.util.Collection<net.spy.memcached.ConnectionObserver> obs,
                                    net.spy.memcached.FailureMode fm,
                                    net.spy.memcached.OperationFactory opfactory)
                             throws java.io.IOException

Throws:

java.io.IOException

Method Detail

reconfigure

public void reconfigure(Bucket bucket)

Description copied from interface: Reconfigurable

Call on a configuration update.

Specified by:

reconfigure in interface Reconfigurable

Parameters:

bucket - updated vbucket configuration

addOperation

protected void addOperation(java.lang.String key,
                            net.spy.memcached.ops.Operation o)

Overrides:

addOperation in class net.spy.memcached.MemcachedConnection

run

public void run()

Infinitely loop processing IO.

Specified by:

run in interface java.lang.Runnable

Overrides:

run in class net.spy.memcached.MemcachedConnection

queueReconnect

protected void queueReconnect(net.spy.memcached.MemcachedNode node)

Only queue for reconnect if the given node is still part of the cluster. Since a node is queued to reconnect, it indicates a close socket and therefore an outdated configuration. With some providers, it is important to force a config reload which is also issued immediately.

Overrides:

queueReconnect in class net.spy.memcached.MemcachedConnection

Parameters:

node - the node to check.

handleWokenUpSelector

protected void handleWokenUpSelector()

Make sure that if the selector is woken up manually for an extended period of time that the sockets are still alive.

This is done by broadcasting a operation so that disconnected sockets are discovered even when no load is applied.

Overrides:

handleWokenUpSelector in class net.spy.memcached.MemcachedConnection