testsuite.regression

Class ConnectionRegressionTest.CountingReBalanceStrategy

java.lang.Object

com.mysql.cj.jdbc.ha.RandomBalanceStrategy

testsuite.regression.ConnectionRegressionTest.CountingReBalanceStrategy

All Implemented Interfaces:

BalanceStrategy

Enclosing class:

ConnectionRegressionTest

public static class ConnectionRegressionTest.CountingReBalanceStrategy
extends RandomBalanceStrategy

Field Summary

Fields

Modifier and Type	Field and Description
private static int	rebalancedTimes

Constructor Summary

Constructors

Constructor and Description
CountingReBalanceStrategy()

Method Summary

Modifier and Type	Method and Description
static int	getTimesRebalanced()
ConnectionImpl	pickConnection(java.lang.reflect.InvocationHandler proxy, java.util.List<java.lang.String> configuredHosts, java.util.Map<java.lang.String,JdbcConnection> liveConnections, long[] responseTimes, int numRetries) Called by the driver to pick a new connection to route requests over.
static void	resetTimesRebalanced()

Methods inherited from class java.lang.Object

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

Field Detail

rebalancedTimes

private static int rebalancedTimes

Constructor Detail

CountingReBalanceStrategy

public CountingReBalanceStrategy()

Method Detail

getTimesRebalanced

public static int getTimesRebalanced()

resetTimesRebalanced

public static void resetTimesRebalanced()

pickConnection

public ConnectionImpl pickConnection(java.lang.reflect.InvocationHandler proxy,
                                     java.util.List<java.lang.String> configuredHosts,
                                     java.util.Map<java.lang.String,JdbcConnection> liveConnections,
                                     long[] responseTimes,
                                     int numRetries)
                              throws java.sql.SQLException

Description copied from interface: BalanceStrategy

Called by the driver to pick a new connection to route requests over. See LoadBalancedConnectionProxy.createConnectionForHost(String)

Specified by:

pickConnection in interface BalanceStrategy

Overrides:

pickConnection in class RandomBalanceStrategy

Parameters:

proxy - the InvocationHandler that deals with actual method calls to the JDBC connection, and serves as a factory for new connections for this strategy via the createConnectionForHost() method. This proxy takes care of maintaining the response time list, map of host/ports to live connections, and taking connections out of the live connections map if they receive a network-related error while they are in use by the application.

configuredHosts - the list of hosts/ports (in "host:port" form) as passed in by the user.

liveConnections - a map of host/ports to "live" connections to them.

responseTimes - the list of response times for a transaction for each host in the configured hosts list.

numRetries - the number of times the driver expects this strategy to re-try connection attempts if creating a new connection fails.

Returns:

the physical JDBC connection for the application to use, based upon the strategy employed.

Throws:

java.sql.SQLException - if a new connection can not be found or created by this strategy.