Package com.netflix.zuul.netty.connectionpool

Class DefaultClientChannelManager

java.lang.Object

com.netflix.zuul.netty.connectionpool.DefaultClientChannelManager

All Implemented Interfaces:

ClientChannelManager

public class DefaultClientChannelManager
extends Object
implements ClientChannelManager

User: [email protected] Date: 7/8/16 Time: 12:39 PM

Field Summary

Fields

Modifier and Type	Field	Description
static final String	IDLE_STATE_HANDLER_NAME
static final String	METRIC_PREFIX

Constructor Summary

Constructors

Constructor	Description
DefaultClientChannelManager(OriginName originName, com.netflix.client.config.IClientConfig clientConfig, com.netflix.spectator.api.Registry spectatorRegistry)
DefaultClientChannelManager(OriginName originName, com.netflix.client.config.IClientConfig clientConfig, com.netflix.zuul.resolver.Resolver<com.netflix.zuul.discovery.DiscoveryResult> resolver, com.netflix.spectator.api.Registry spectatorRegistry)

Method Summary

Modifier and Type	Method	Description
io.netty.util.concurrent.Promise<PooledConnection>	acquire(io.netty.channel.EventLoop eventLoop)
io.netty.util.concurrent.Promise<PooledConnection>	acquire(io.netty.channel.EventLoop eventLoop, Object key, CurrentPassport passport, AtomicReference<com.netflix.zuul.discovery.DiscoveryResult> selectedServer, AtomicReference<? super InetAddress> selectedHostAddr)
protected OriginChannelInitializer	createChannelInitializer(com.netflix.client.config.IClientConfig clientConfig, ConnectionPoolConfig connPoolConfig, com.netflix.spectator.api.Registry registry)
protected IConnectionPool	createConnectionPool(com.netflix.zuul.discovery.DiscoveryResult discoveryResult, SocketAddress serverAddr, NettyClientConnectionFactory clientConnFactory, PooledConnectionFactory pcf, ConnectionPoolConfig connPoolConfig, com.netflix.client.config.IClientConfig clientConfig, com.netflix.spectator.api.Counter createNewConnCounter, com.netflix.spectator.api.Counter createConnSucceededCounter, com.netflix.spectator.api.Counter createConnFailedCounter, com.netflix.spectator.api.Counter requestConnCounter, com.netflix.spectator.api.Counter reuseConnCounter, com.netflix.spectator.api.Counter connTakenFromPoolIsNotOpen, com.netflix.spectator.api.Counter closeAbovePoolHighWaterMarkCounter, com.netflix.spectator.api.Counter maxConnsPerHostExceededCounter, com.netflix.spectator.api.histogram.PercentileTimer connEstablishTimer, AtomicInteger connsInPool, AtomicInteger connsInUse)
protected NettyClientConnectionFactory	createNettyClientConnectionFactory(ConnectionPoolConfig connPoolConfig, io.netty.channel.ChannelInitializer<? extends io.netty.channel.Channel> clientConnInitializer)
protected PooledConnectionFactory	createPooledConnectionFactory(com.netflix.zuul.discovery.DiscoveryResult chosenServer, ClientChannelManager clientChannelMgr, com.netflix.spectator.api.Counter closeConnCounter, com.netflix.spectator.api.Counter closeWrtBusyConnCounter)
ConnectionPoolConfig	getConfig()
int	getConnsInPool()
int	getConnsInUse()
int	getInflightRequestsCount()
protected ConcurrentHashMap<com.netflix.zuul.discovery.DiscoveryResult,IConnectionPool>	getPerServerPools()
void	gracefulShutdown()	Gracefully shuts down a DefaultClientChannelManager by allowing in-flight requests to finish before closing the connections.
void	init()
boolean	isAvailable()
boolean	isCold()
protected SocketAddress	pickAddress(com.netflix.zuul.discovery.DiscoveryResult chosenServer)	Given a server chosen from the load balancer, pick the appropriate address to connect to.
boolean	release(PooledConnection conn)
protected void	releaseHandlers(PooledConnection conn)
boolean	remove(PooledConnection conn)
static void	removeHandlerFromPipeline(String handlerName, io.netty.channel.ChannelPipeline pipeline)
void	shutdown()
protected void	updateServerStatsOnRelease(PooledConnection conn)

Methods inherited from class java.lang.Object

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

Field Details

METRIC_PREFIX

public static final String METRIC_PREFIX

See Also:

• Constant Field Values

IDLE_STATE_HANDLER_NAME

public static final String IDLE_STATE_HANDLER_NAME

See Also:

• Constant Field Values

Constructor Details

DefaultClientChannelManager

public DefaultClientChannelManager(OriginName originName,
 com.netflix.client.config.IClientConfig clientConfig,
 com.netflix.spectator.api.Registry spectatorRegistry)

DefaultClientChannelManager

public DefaultClientChannelManager(OriginName originName,
 com.netflix.client.config.IClientConfig clientConfig,
 com.netflix.zuul.resolver.Resolver<com.netflix.zuul.discovery.DiscoveryResult> resolver,
 com.netflix.spectator.api.Registry spectatorRegistry)

Method Details

init

public void init()

Specified by:

init in interface ClientChannelManager

createChannelInitializer

protected OriginChannelInitializer createChannelInitializer(com.netflix.client.config.IClientConfig clientConfig,
 ConnectionPoolConfig connPoolConfig,
 com.netflix.spectator.api.Registry registry)

createNettyClientConnectionFactory

protected NettyClientConnectionFactory createNettyClientConnectionFactory(ConnectionPoolConfig connPoolConfig,
 io.netty.channel.ChannelInitializer<? extends io.netty.channel.Channel> clientConnInitializer)

getConfig

public ConnectionPoolConfig getConfig()

Specified by:

getConfig in interface ClientChannelManager

isAvailable

public boolean isAvailable()

Specified by:

isAvailable in interface ClientChannelManager

isCold

public boolean isCold()

Specified by:

isCold in interface ClientChannelManager

getInflightRequestsCount

public int getInflightRequestsCount()

Specified by:

getInflightRequestsCount in interface ClientChannelManager

shutdown

public void shutdown()

Specified by:

shutdown in interface ClientChannelManager

gracefulShutdown

public void gracefulShutdown()

Gracefully shuts down a DefaultClientChannelManager by allowing in-flight requests to finish before closing the connections. Idle connections in the connection pools are closed, and any connections associated with an in-flight request will be closed upon trying to return the connection to the pool

Specified by:

gracefulShutdown in interface ClientChannelManager

release

public boolean release(PooledConnection conn)

Specified by:

release in interface ClientChannelManager

updateServerStatsOnRelease

protected void updateServerStatsOnRelease(PooledConnection conn)

releaseHandlers

protected void releaseHandlers(PooledConnection conn)

removeHandlerFromPipeline

public static void removeHandlerFromPipeline(String handlerName,
 io.netty.channel.ChannelPipeline pipeline)

remove

public boolean remove(PooledConnection conn)

Specified by:

remove in interface ClientChannelManager

acquire

public io.netty.util.concurrent.Promise<PooledConnection> acquire(io.netty.channel.EventLoop eventLoop)

Specified by:

acquire in interface ClientChannelManager

acquire

public io.netty.util.concurrent.Promise<PooledConnection> acquire(io.netty.channel.EventLoop eventLoop,
 @Nullable
 Object key,
 CurrentPassport passport,
 AtomicReference<com.netflix.zuul.discovery.DiscoveryResult> selectedServer,
 AtomicReference<? super InetAddress> selectedHostAddr)

Specified by:

acquire in interface ClientChannelManager

createPooledConnectionFactory

protected PooledConnectionFactory createPooledConnectionFactory(com.netflix.zuul.discovery.DiscoveryResult chosenServer,
 ClientChannelManager clientChannelMgr,
 com.netflix.spectator.api.Counter closeConnCounter,
 com.netflix.spectator.api.Counter closeWrtBusyConnCounter)

createConnectionPool

protected IConnectionPool createConnectionPool(com.netflix.zuul.discovery.DiscoveryResult discoveryResult,
 SocketAddress serverAddr,
 NettyClientConnectionFactory clientConnFactory,
 PooledConnectionFactory pcf,
 ConnectionPoolConfig connPoolConfig,
 com.netflix.client.config.IClientConfig clientConfig,
 com.netflix.spectator.api.Counter createNewConnCounter,
 com.netflix.spectator.api.Counter createConnSucceededCounter,
 com.netflix.spectator.api.Counter createConnFailedCounter,
 com.netflix.spectator.api.Counter requestConnCounter,
 com.netflix.spectator.api.Counter reuseConnCounter,
 com.netflix.spectator.api.Counter connTakenFromPoolIsNotOpen,
 com.netflix.spectator.api.Counter closeAbovePoolHighWaterMarkCounter,
 com.netflix.spectator.api.Counter maxConnsPerHostExceededCounter,
 com.netflix.spectator.api.histogram.PercentileTimer connEstablishTimer,
 AtomicInteger connsInPool,
 AtomicInteger connsInUse)

getConnsInPool

public int getConnsInPool()

Specified by:

getConnsInPool in interface ClientChannelManager

getConnsInUse

public int getConnsInUse()

Specified by:

getConnsInUse in interface ClientChannelManager

getPerServerPools

protected ConcurrentHashMap<com.netflix.zuul.discovery.DiscoveryResult,IConnectionPool> getPerServerPools()

pickAddress

protected SocketAddress pickAddress(com.netflix.zuul.discovery.DiscoveryResult chosenServer)

Given a server chosen from the load balancer, pick the appropriate address to connect to.