/*
* Copyright 2013, The Sporting Exchange Limited
*
* 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 com.betfair.tornjak.monitor.web;
import java.util.Map;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import com.betfair.tornjak.monitor.Status;
import static com.betfair.tornjak.monitor.Status.*;
import com.betfair.tornjak.monitor.StatusAggregator;
import org.springframework.web.servlet.ModelAndView;
import org.springframework.web.servlet.View;
import org.springframework.web.servlet.mvc.AbstractController;
import com.betfair.tornjak.monitor.MonitorRegistry;
public class PingController extends AbstractController {
static String webping = "<!DOCTYPE html PUBLIC \"-//W3C//DTD HTML 4.01//EN\" \"http://www.w3.org/TR/html4/strict.dtd\">\n" +
"<html xmlns=\"http://www.w3.org/1999/xhtml\">\n" +
"\t<head><title>Web Ping</title></head>\n" +
"\t<body>\n" +
"\t\t<pre>Server ${status}</pre>\n" +
"\t</body>\n" +
"</html>";
private MonitorRegistry monitorRegistry;
public void setMonitorRegistry(MonitorRegistry monitorRegistry) {
this.monitorRegistry = monitorRegistry;
}
public ModelAndView handleRequestInternal(HttpServletRequest request, HttpServletResponse response)
throws Exception {
return new ModelAndView(new View() {
public String getContentType() {
return "text/html";
}
public void render(Map model, HttpServletRequest request,
HttpServletResponse response) throws Exception {
StatusAggregator sa = monitorRegistry.getStatusAggregator();
Status status = (sa == null) ? FAIL : sa.getStatus();
// webping only supports OK or FAIL response
if (status == WARN) {
status = OK;
}
response.getWriter().print(webping.replace("${status}", status.name()));
}
}, "status", "");
}
}