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/*-
* ============LICENSE_START=======================================================
* SDC
* ================================================================================
* Copyright (C) 2017 AT&T Intellectual Property. All rights reserved.
* ================================================================================
* 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.
* ============LICENSE_END=========================================================
*/
package org.openecomp.sdc.be.monitoring;
import org.eclipse.jetty.client.api.Request;
import org.eclipse.jetty.client.api.Response;
import org.eclipse.jetty.proxy.ProxyServlet;
import org.openecomp.sdc.be.components.impl.MonitoringBusinessLogic;
import org.openecomp.sdc.be.impl.WebAppContextWrapper;
import org.openecomp.sdc.common.api.Constants;
import org.openecomp.sdc.common.log.wrappers.Logger;
import org.springframework.web.context.WebApplicationContext;
import javax.servlet.ServletContext;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.net.URI;
public class EsGateway extends ProxyServlet {
private static final long serialVersionUID = 1L;
private static final Logger log = Logger.getLogger(EsGateway.class);
@Override
public URI rewriteURI(HttpServletRequest request) {
String originalUrl = request.getRequestURI();
String redirectedUrl = getModifiedUrl(request);
log.debug("EsGateway Redirecting request from: {} , to: {}", originalUrl, redirectedUrl);
return URI.create(redirectedUrl);
}
@Override
public void customizeProxyRequest(Request proxyRequest, HttpServletRequest request) {
super.customizeProxyRequest(proxyRequest, request);
}
@Override
protected void onResponseSuccess(HttpServletRequest request, HttpServletResponse response, Response proxyResponse) {
super.onResponseSuccess(request, response, proxyResponse);
}
public String getModifiedUrl(HttpServletRequest request) {
String esHost = null;
String esPort = null;
MonitoringBusinessLogic monitoringBL = getMonitoringBL(request.getSession().getServletContext());
if (monitoringBL == null) {
log.error("failed to retrive monitoringBL.");
} else {
esHost = monitoringBL.getEsHost();
esPort = monitoringBL.getEsPort();
}
//String scheme = request.getScheme(); esGateway HTTP
String scheme = "http";
String contextPath = request.getContextPath(); // /mywebapp
String servletPath = request.getServletPath(); // /servlet/MyServlet
String pathInfo = request.getPathInfo(); // /a/b;c=123
String queryString = request.getQueryString(); // d=789
StringBuilder url = new StringBuilder();
url.append(scheme).append("://").append(esHost);
url.append(":").append(esPort);
url.append(contextPath).append(servletPath);
if (pathInfo != null) {
url.append(pathInfo);
}
if (queryString != null) {
url.append("?").append(queryString);
}
return url.toString().replace("/sdc2/esGateway/", "/");
}
protected MonitoringBusinessLogic getMonitoringBL(ServletContext context) {
WebAppContextWrapper webApplicationContextWrapper = (WebAppContextWrapper) context.getAttribute(Constants.WEB_APPLICATION_CONTEXT_WRAPPER_ATTR);
WebApplicationContext webApplicationContext = webApplicationContextWrapper.getWebAppContext(context);
return webApplicationContext.getBean(MonitoringBusinessLogic.class);
}
}
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