com.oceanbase.jdbc.internal.failover

Class FailoverProxy

java.lang.Object

com.oceanbase.jdbc.internal.failover.FailoverProxy

All Implemented Interfaces:

InvocationHandler

public class FailoverProxy
extends Object
implements InvocationHandler

Field Summary

Fields

Modifier and Type	Field and Description
ReentrantLock	lock
LruTraceCache	traceCache

Constructor Summary

Constructors

Constructor and Description
FailoverProxy(Listener listener, ReentrantLock lock, LruTraceCache traceCache) Proxy constructor.

Method Summary

Modifier and Type	Method and Description
Listener	getListener()
boolean	hasToHandleFailover(SQLException exception) Check if this Sqlerror is a connection exception.
Object	invoke(Object proxy, Method method, Object[] args) Proxy that catch Protocol call, to permit to catch errors and handle failover when multiple hosts.
void	reconnect() Launch reconnect implementation.

Methods inherited from class java.lang.Object

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

Field Detail

lock

public final ReentrantLock lock

traceCache

public final LruTraceCache traceCache

Constructor Detail

FailoverProxy

public FailoverProxy(Listener listener,
                     ReentrantLock lock,
                     LruTraceCache traceCache)
              throws SQLException

Proxy constructor.

Parameters:

listener - failover implementation.

lock - synchronisation lock

traceCache - trace cache

Throws:

SQLException - if connection error occur

Method Detail

invoke

public Object invoke(Object proxy,
                     Method method,
                     Object[] args)
              throws Throwable

Proxy that catch Protocol call, to permit to catch errors and handle failover when multiple hosts.

Specified by:

invoke in interface InvocationHandler

Parameters:

proxy - the current protocol

method - the called method on the protocol

args - methods parameters

Returns:

protocol method result

Throws:

Throwable - the method throwed error if not catch by failover

hasToHandleFailover

public boolean hasToHandleFailover(SQLException exception)

Check if this Sqlerror is a connection exception. if that's the case, must be handle by failover

error codes : 08000 : connection exception 08001 : SQL client unable to establish SQL connection 08002 : connection name in use 08003 : connection does not exist 08004 : SQL server rejected SQL connection 08006 : connection failure 08007 : transaction resolution unknown 70100 : connection was killed if error code is "1927"

Parameters:

exception - the Exception

Returns:

true if there has been a connection error that must be handled by failover

reconnect

public void reconnect()
               throws SQLException

Launch reconnect implementation.

Throws:

SQLException - exception

getListener

public Listener getListener()