org.xsocket.connection
Interface IConnectionPool

All Superinterfaces:

Closeable

All Known Implementing Classes:

BlockingConnectionPool, NonBlockingConnectionPool

public interface IConnectionPool
extends Closeable

A connection pool manages a pool of open connections. Typically, a connection pool will be used on the client-side if connections for the same server (address) will be created in a serial manner in a sort period of time. By pooling such connections the overhead of establishing a connection will be avoided For pool management reasons, timeouts can be defined. The IdleTimeout defines the max idle time in the pool. After this time the free connection will be closed. In the same way, the max living time defines the timeout of the connection. If a free connection exceeds this time, the connection will be closed.
Additional the max size of the active connections can be defined. If a connection is requested and the max limit of the active connection is reached, an exception wiil be thrown.

Author:

grro@xsocket.org

Field Summary

static int	DEFAULT_CREATION_TIMEOUT_MILLIS
static int	DEFAULT_IDLE_TIMEOUT_MILLIS
static int	DEFAULT_LIFE_TIMEOUT_MILLIS
static int	DEFAULT_MAX_ACTIVE
static int	DEFAULT_MAX_ACTIVE_PER_SERVER
static int	DEFAULT_MAX_IDLE
static long	DEFAULT_MAX_WAIT_MILLIS
static int	DEFAULT_MAX_WAITING

Method Summary

void	addListener(ILifeCycle listener) adds a listener
List<String>	getActiveConnectionInfos() get a info list about the active connections
List<String>	getIdleConnectionInfos() get a info list about the idle connections
int	getMaxActive() return the number of max active resources
int	getMaxActivePerServer() return the number of max active resources per server
int	getMaxIdle() get the number of max idling resources
int	getNumActive() get the current number of the active resources
int	getNumCreated() get the number of the created resources
int	getNumDestroyed() get the number of the destroyed resources
int	getNumIdle() get the current number of idling resources
int	getNumTimeoutPooledMaxIdleTime() get the number of timeouts caused by the pool idle timeout
int	getNumTimeoutPooledMaxLifeTime() get the number of timeouts caused by the pool life timeout
int	getPooledMaxIdleTimeMillis() get the idle time out
int	getPooledMaxLifeTimeMillis() get the life timeout of a resource
boolean	isOpen() returns true, is pool is open
boolean	removeListener(ILifeCycle listener) removes a listener
void	setMaxActive(int maxActive) set the number of max active resources
void	setMaxActivePerServer(int maxActivePerServer) set the number of max active resources per server
void	setMaxIdle(int maxIdle) set the number of max idling resources
void	setPooledMaxIdleTimeMillis(int idleTimeoutMillis) set the idle time out of a resource within the pool
void	setPooledMaxLifeTimeMillis(int lifeTimeoutMillis) set the life timeout of a resource

Methods inherited from interface java.io.Closeable

close

Field Detail

DEFAULT_MAX_ACTIVE

static final int DEFAULT_MAX_ACTIVE

See Also:

Constant Field Values

DEFAULT_MAX_ACTIVE_PER_SERVER

static final int DEFAULT_MAX_ACTIVE_PER_SERVER

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Constant Field Values

DEFAULT_MAX_IDLE

static final int DEFAULT_MAX_IDLE

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Constant Field Values

DEFAULT_MAX_WAIT_MILLIS

static final long DEFAULT_MAX_WAIT_MILLIS

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Constant Field Values

DEFAULT_MAX_WAITING

static final int DEFAULT_MAX_WAITING

See Also:

Constant Field Values

DEFAULT_IDLE_TIMEOUT_MILLIS

static final int DEFAULT_IDLE_TIMEOUT_MILLIS

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Constant Field Values

DEFAULT_LIFE_TIMEOUT_MILLIS

static final int DEFAULT_LIFE_TIMEOUT_MILLIS

See Also:

Constant Field Values

DEFAULT_CREATION_TIMEOUT_MILLIS

static final int DEFAULT_CREATION_TIMEOUT_MILLIS

See Also:

Constant Field Values

Method Detail

isOpen

boolean isOpen()

returns true, is pool is open

Returns:

true, is pool is open

addListener

void addListener(ILifeCycle listener)

adds a listener

Parameters:

listener - the listener to add

removeListener

boolean removeListener(ILifeCycle listener)

removes a listener

Parameters:

listener - the listener to remove

Returns:

true, is the listener has been removed

getMaxActive

int getMaxActive()

return the number of max active resources

Returns:

number of max active resources

getMaxActivePerServer

int getMaxActivePerServer()

return the number of max active resources per server

Returns:

number of max active resources per server

setMaxActivePerServer

void setMaxActivePerServer(int maxActivePerServer)

set the number of max active resources per server

setMaxActive

void setMaxActive(int maxActive)

set the number of max active resources

Parameters:

maxActive - the number of max active resources

getMaxIdle

int getMaxIdle()

get the number of max idling resources

Returns:

the number of max idling resources

setMaxIdle

void setMaxIdle(int maxIdle)

set the number of max idling resources

Parameters:

the - number of max idling resources

getNumActive

int getNumActive()

get the current number of the active resources

Returns:

the current number of the active resources

getNumDestroyed

int getNumDestroyed()

get the number of the destroyed resources

Returns:

the number of the destroyed resources

getNumTimeoutPooledMaxLifeTime

int getNumTimeoutPooledMaxLifeTime()

get the number of timeouts caused by the pool life timeout

Returns:

the number of timeouts

getNumTimeoutPooledMaxIdleTime

int getNumTimeoutPooledMaxIdleTime()

get the number of timeouts caused by the pool idle timeout

Returns:

the number of timeouts

getNumCreated

int getNumCreated()

get the number of the created resources

Returns:

the number of the created resources

getActiveConnectionInfos

List<String> getActiveConnectionInfos()

get a info list about the active connections

Returns:

a info list about the active connection

getIdleConnectionInfos

List<String> getIdleConnectionInfos()

get a info list about the idle connections

Returns:

a info list about the idle connections

getNumIdle

int getNumIdle()

get the current number of idling resources

Returns:

the current number of idling resources

getPooledMaxIdleTimeMillis

int getPooledMaxIdleTimeMillis()

get the idle time out

Returns:

the idle time out

setPooledMaxIdleTimeMillis

void setPooledMaxIdleTimeMillis(int idleTimeoutMillis)

set the idle time out of a resource within the pool

Parameters:

idleTimeoutMillis - the idle time out

getPooledMaxLifeTimeMillis

int getPooledMaxLifeTimeMillis()

get the life timeout of a resource

Returns:

the life timeout of a resource

setPooledMaxLifeTimeMillis

void setPooledMaxLifeTimeMillis(int lifeTimeoutMillis)

set the life timeout of a resource

Parameters:

lifeTimeoutSec - the life timeout of a resource