程序包 com.mysql.cj.jdbc.ha

类 ReplicationConnectionProxy

java.lang.Object

com.mysql.cj.jdbc.ha.MultiHostConnectionProxy

com.mysql.cj.jdbc.ha.ReplicationConnectionProxy

所有已实现的接口:

PingTarget, InvocationHandler

public class ReplicationConnectionProxy
extends MultiHostConnectionProxy
implements PingTarget

Connection that opens two connections, one two a replication master, and another to one or more slaves, and decides to use master when the connection is not read-only, and use slave(s) when the connection is read-only.

字段概要

字段

修饰符和类型	字段	说明
protected boolean	allowMasterDownConnections
protected boolean	allowSlaveDownConnections
protected boolean	enableJMX
protected LoadBalancedConnection	masterConnection
protected boolean	readFromMasterWhenNoSlaves
protected boolean	readFromMasterWhenNoSlavesOriginal
protected boolean	readOnly
protected LoadBalancedConnection	slavesConnection

从类继承的字段 com.mysql.cj.jdbc.ha.MultiHostConnectionProxy

connectionUrl, lastExceptionDealtWith

方法概要

修饰符和类型	方法	说明
void	addSlaveHost(String hostPortPair)
static ReplicationConnection	createProxyInstance(ConnectionUrl connectionUrl)	Static factory to create ReplicationConnection instances.
void	doPing()	Pings both l/b connections.
long	getConnectionGroupId()
JdbcConnection	getCurrentConnection()
JdbcConnection	getMasterConnection()
JdbcConnection	getSlavesConnection()
boolean	isHostMaster(String hostPortPair)
boolean	isHostSlave(String hostPortPair)
boolean	isMasterConnection()	Checks if current connection is the masters l/b connection.
boolean	isReadOnly()
boolean	isSlavesConnection()	Checks if current connection is the slaves l/b connection.
void	promoteSlaveToMaster(String hostPortPair)
protected void	propagateProxyDown(JdbcConnection proxyConn)	Propagates the connection proxy down through all live connections.
void	removeMasterHost(String hostPortPair)
void	removeMasterHost(String hostPortPair, boolean waitUntilNotInUse)
void	removeMasterHost(String hostPortPair, boolean waitUntilNotInUse, boolean isNowSlave)
void	removeSlave(String hostPortPair)
void	removeSlave(String hostPortPair, boolean closeGently)
void	setReadOnly(boolean readOnly)

从类继承的方法 com.mysql.cj.jdbc.ha.MultiHostConnectionProxy

allowedOnClosedConnection, getParentProxy, getProxy, invoke, setProxy

从类继承的方法 java.lang.Object

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

字段详细资料

enableJMX

protected boolean enableJMX

allowMasterDownConnections

protected boolean allowMasterDownConnections

allowSlaveDownConnections

protected boolean allowSlaveDownConnections

readFromMasterWhenNoSlaves

protected boolean readFromMasterWhenNoSlaves

readFromMasterWhenNoSlavesOriginal

protected boolean readFromMasterWhenNoSlavesOriginal

readOnly

protected boolean readOnly

masterConnection

protected LoadBalancedConnection masterConnection

slavesConnection

protected LoadBalancedConnection slavesConnection

方法详细资料

createProxyInstance

public static ReplicationConnection createProxyInstance(ConnectionUrl connectionUrl)
                                                 throws SQLException

Static factory to create ReplicationConnection instances.

参数:

connectionUrl - The connection URL containing the hosts in a replication setup.

返回:

A ReplicationConnection proxy.

抛出:

SQLException - if an error occurs

propagateProxyDown

protected void propagateProxyDown(JdbcConnection proxyConn)

Propagates the connection proxy down through all live connections.

覆盖:

propagateProxyDown 在类中 MultiHostConnectionProxy

参数:

proxyConn - The top level connection in the multi-host connections chain.

isMasterConnection

public boolean isMasterConnection()

Checks if current connection is the masters l/b connection.

isSlavesConnection

public boolean isSlavesConnection()

Checks if current connection is the slaves l/b connection.

返回:

true if current connection is the slaves l/b connection

doPing

public void doPing()
            throws SQLException

Pings both l/b connections. Switch to another connection in case of failure.

指定者:

doPing 在接口中 PingTarget

抛出:

SQLException

getCurrentConnection

public JdbcConnection getCurrentConnection()

getConnectionGroupId

public long getConnectionGroupId()

getMasterConnection

public JdbcConnection getMasterConnection()

promoteSlaveToMaster

public void promoteSlaveToMaster(String hostPortPair)
                          throws SQLException

抛出:

SQLException

removeMasterHost

public void removeMasterHost(String hostPortPair)
                      throws SQLException

抛出:

SQLException

removeMasterHost

public void removeMasterHost(String hostPortPair,
                             boolean waitUntilNotInUse)
                      throws SQLException

抛出:

SQLException

removeMasterHost

public void removeMasterHost(String hostPortPair,
                             boolean waitUntilNotInUse,
                             boolean isNowSlave)
                      throws SQLException

抛出:

SQLException

isHostMaster

public boolean isHostMaster(String hostPortPair)

getSlavesConnection

public JdbcConnection getSlavesConnection()

addSlaveHost

public void addSlaveHost(String hostPortPair)
                  throws SQLException

抛出:

SQLException

removeSlave

public void removeSlave(String hostPortPair)
                 throws SQLException

抛出:

SQLException

removeSlave

public void removeSlave(String hostPortPair,
                        boolean closeGently)
                 throws SQLException

抛出:

SQLException

isHostSlave

public boolean isHostSlave(String hostPortPair)

setReadOnly

public void setReadOnly(boolean readOnly)
                 throws SQLException

抛出:

SQLException

isReadOnly

public boolean isReadOnly()
                   throws SQLException

抛出:

SQLException