io.undertow.server.handlers.proxy.ProxyCallback Maven / Gradle / Ivy
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This artifact provides a single jar that contains all classes required to use remote EJB and JMS, including
all dependencies. It is intended for use by those not using maven, maven users should just import the EJB and
JMS BOM's instead (shaded JAR's cause lots of problems with maven, as it is very easy to inadvertently end up
with different versions on classes on the class path).
/*
* JBoss, Home of Professional Open Source.
* Copyright 2014 Red Hat, Inc., and individual contributors
* as indicated by the @author tags.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package io.undertow.server.handlers.proxy;
import io.undertow.server.HttpServerExchange;
/**
* Yet another callback class, this one used by the proxy handler
*
* @author Stuart Douglas
*/
public interface ProxyCallback {
void completed(final HttpServerExchange exchange, T result);
/**
* Callback if establishing the connection to a backend server fails.
*
* @param exchange the http server exchange
*/
void failed(final HttpServerExchange exchange);
/**
* Callback if no backend server could be found.
*
* @param exchange the http server exchange
*/
void couldNotResolveBackend(final HttpServerExchange exchange);
/**
* This is invoked when the target connection 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.
*
* @param exchange The exchange
*/
void queuedRequestFailed(HttpServerExchange exchange);
}