de.dentrassi.pm.usage.UsageController.java Source code

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Here is the source code for de.dentrassi.pm.usage.UsageController.java

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/*******************************************************************************
 * Copyright (c) 2015 IBH SYSTEMS GmbH.
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 *
 * Contributors:
 *     IBH SYSTEMS GmbH - initial API and implementation
 *******************************************************************************/
package de.dentrassi.pm.usage;

import java.util.Collections;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

import javax.servlet.annotation.HttpConstraint;
import javax.servlet.http.HttpServletRequest;

import com.google.gson.Gson;
import com.google.gson.GsonBuilder;

import de.dentrassi.osgi.web.Controller;
import de.dentrassi.osgi.web.LinkTarget;
import de.dentrassi.osgi.web.ModelAndView;
import de.dentrassi.osgi.web.RequestMapping;
import de.dentrassi.osgi.web.ViewResolver;
import de.dentrassi.osgi.web.controller.ControllerInterceptor;
import de.dentrassi.pm.common.web.InterfaceExtender;
import de.dentrassi.pm.common.web.Modifier;
import de.dentrassi.pm.common.web.menu.MenuEntry;
import de.dentrassi.pm.sec.web.controller.HttpContraintControllerInterceptor;
import de.dentrassi.pm.sec.web.controller.Secured;
import de.dentrassi.pm.sec.web.controller.SecuredControllerInterceptor;

@Controller
@Secured
@HttpConstraint(rolesAllowed = "ADMIN")
@ControllerInterceptor(SecuredControllerInterceptor.class)
@ControllerInterceptor(HttpContraintControllerInterceptor.class)
@ViewResolver("/WEB-INF/views/%s.jsp")
@RequestMapping("/system/usage")
public class UsageController implements InterfaceExtender {
    private static final List<MenuEntry> MAIN_ENTRIES = Collections
            .singletonList(new MenuEntry("System", Integer.MAX_VALUE, "Usage", 6_000,
                    LinkTarget.createFromController(UsageController.class, "main"), Modifier.DEFAULT, null));

    private PingJob pingJob;

    public void setPingJob(final PingJob pingJob) {
        this.pingJob = pingJob;
    }

    @RequestMapping("/")
    public ModelAndView main() {
        final Map<String, Object> data = new HashMap<>(3);

        data.put("enabled", this.pingJob.isActive());
        data.put("data", makeJson(this.pingJob.buildStatistics()));
        data.put("lastPingTimestamp", this.pingJob.getLastPing());

        return new ModelAndView("index", data);
    }

    private String makeJson(final Statistics stats) {
        final GsonBuilder gb = new GsonBuilder();
        gb.setPrettyPrinting();
        final Gson g = gb.create();
        return g.toJson(stats);
    }

    @Override
    public List<MenuEntry> getMainMenuEntries(final HttpServletRequest request) {
        if (request.isUserInRole("ADMIN")) {
            return MAIN_ENTRIES;
        } else {
            return null;
        }
    }
}