package com.epam.wilma.router;
/*==========================================================================
Copyright 2013-2017 EPAM Systems
This file is part of Wilma.
Wilma is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
Wilma is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with Wilma. If not, see <http://www.gnu.org/licenses/>.
===========================================================================*/
import java.net.URI;
import java.net.URISyntaxException;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.ApplicationListener;
import org.springframework.context.event.ContextRefreshedEvent;
import org.springframework.stereotype.Component;
import com.epam.wilma.domain.http.WilmaHttpRequest;
import com.epam.wilma.router.configuration.RouteEngineConfigurationAccess;
import com.epam.wilma.router.configuration.domain.PropertyDTO;
/**
* Routes the "blocked" requests to the servlet that will answer back instead.
* @author Adam_Csaba_Kiraly
*
*/
@Component
public class LocalhostRequestRouter implements ApplicationListener<ContextRefreshedEvent> {
@Autowired
private RouteEngineConfigurationAccess routeEngineConfigurationAccess;
private final Logger logger = LoggerFactory.getLogger(LocalhostRequestRouter.class);
private final String host = "http://127.0.0.1:%s/local/";
private int internalPort;
/**
* Changes the requests destination URI to the servlet that will answer back that the request was blocked.
* @param request the request to reroute
*/
public void reroute(final WilmaHttpRequest request) {
try {
URI uri;
uri = createUri();
request.setUri(uri);
} catch (URISyntaxException e) {
logger.error(e.getMessage());
}
}
@Override
public void onApplicationEvent(final ContextRefreshedEvent event) {
PropertyDTO propertyDTO = routeEngineConfigurationAccess.getProperties();
internalPort = propertyDTO.getProxyPort();
}
private URI createUri() throws URISyntaxException {
return new URI(String.format(host, internalPort));
}
}