io.undertow.server.handlers.proxy

Interface ConnectionPoolManager

public interface ConnectionPoolManager

Manager that controls the behaviour of a ProxyConnectionPool

Author:

Stuart Douglas

Method Summary

Methods

Modifier and Type	Method and Description
boolean	canCreateConnection(int connections, io.undertow.server.handlers.proxy.ProxyConnectionPool proxyConnectionPool) Returns true if the connection pool can create a new connection
int	getProblemServerRetry()
void	queuedConnectionFailed(ProxyClient.ProxyTarget proxyTarget, HttpServerExchange exchange, ProxyCallback<ProxyConnection> callback, long timeoutMills) This is invoked when the target thread pool transitions to problem status.

Method Detail

canCreateConnection

boolean canCreateConnection(int connections,
                          io.undertow.server.handlers.proxy.ProxyConnectionPool proxyConnectionPool)

Returns true if the connection pool can create a new connection

Parameters:

connections - The number of connections associated with the current IO thread.

proxyConnectionPool - The connection pool

Returns:

true if a connection can be created

queuedConnectionFailed

void queuedConnectionFailed(ProxyClient.ProxyTarget proxyTarget,
                          HttpServerExchange exchange,
                          ProxyCallback<ProxyConnection> callback,
                          long timeoutMills)

This is invoked when the target thread pool transitions to problem status. It will be called once for each queued request that has not yet been allocated a connection. The manager can redistribute these requests to other hosts, or can end the exchange with an error status.

Parameters:

proxyTarget - The proxy target

exchange - The exchange

callback - The callback

timeoutMills - The remaining timeout in milliseconds, or -1 if no timeout has been specified

getProblemServerRetry

int getProblemServerRetry()

Returns:

The amount of time that we should wait before re-testing a problem server