Java tutorial
/* * NOTE: This copyright does *not* cover user programs that use HQ * program services by normal system calls through the application * program interfaces provided as part of the Hyperic Plug-in Development * Kit or the Hyperic Client Development Kit - this is merely considered * normal use of the program, and does *not* fall under the heading of * "derived work". * * Copyright (C) [2004, 2005, 2006], Hyperic, Inc. * This file is part of HQ. * * HQ is free software; you can redistribute it and/or modify * it under the terms version 2 of the GNU General Public License as * published by the Free Software Foundation. This program 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 this program; if not, write to the Free Software * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 * USA. */ package org.hyperic.hq.ui.action.portlet.criticalalerts; import java.text.SimpleDateFormat; import java.util.ArrayList; import java.util.List; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; import org.apache.commons.logging.Log; import org.apache.commons.logging.LogFactory; import org.apache.struts.action.ActionForm; import org.apache.struts.action.ActionForward; import org.apache.struts.action.ActionMapping; import org.apache.struts.util.MessageResources; import org.hyperic.hq.appdef.shared.AppdefEntityID; import org.hyperic.hq.appdef.shared.AppdefEntityValue; import org.hyperic.hq.appdef.shared.AppdefUtil; import org.hyperic.hq.authz.server.session.AuthzSubject; import org.hyperic.hq.bizapp.shared.AuthzBoss; import org.hyperic.hq.bizapp.shared.ConfigBoss; import org.hyperic.hq.bizapp.shared.EventsBoss; import org.hyperic.hq.escalation.server.session.Escalatable; import org.hyperic.hq.events.AlertDefinitionInterface; import org.hyperic.hq.ui.Constants; import org.hyperic.hq.ui.action.portlet.BaseRSSAction; import org.hyperic.hq.ui.action.portlet.RSSFeed; import org.hyperic.hq.ui.shared.DashboardManager; import org.hyperic.util.config.ConfigResponse; import org.hyperic.util.units.FormattedNumber; import org.hyperic.util.units.UnitNumber; import org.hyperic.util.units.UnitsConstants; import org.hyperic.util.units.UnitsFormat; import org.hyperic.util.units.DateFormatter.DateSpecifics; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.web.util.UriTemplate; /** * An <code>Action</code> that loads the <code>Portal</code> identified by the * <code>PORTAL_PARAM</code> request parameter (or the default portal, if the * parameter is not specified) into the <code>PORTAL_KEY</code> request * attribute. */ public class RSSAction extends BaseRSSAction { private final Log log = LogFactory.getLog(RSSAction.class.getName()); private EventsBoss eventsBoss; private AuthzBoss authzBoss; @Autowired public RSSAction(DashboardManager dashboardManager, ConfigBoss configBoss, EventsBoss eventsBoss, AuthzBoss authzBoss) { super(dashboardManager, configBoss); this.eventsBoss = eventsBoss; this.authzBoss = authzBoss; } public ActionForward execute(ActionMapping mapping, ActionForm form, HttpServletRequest request, HttpServletResponse response) throws Exception { RSSFeed feed = getNewRSSFeed(request); // Set title MessageResources res = getResources(request); feed.setTitle(res.getMessage("dash.home.CriticalAlerts")); String user = getUsername(request); List<Escalatable> list; try { // Set the managingEditor setManagingEditor(request); // Get user preferences ConfigResponse preferences = getUserPreferences(request, user); int count = Integer.parseInt(preferences.getValue(".dashContent.criticalalerts.numberOfAlerts").trim()); int priority = Integer.parseInt(preferences.getValue(".dashContent.criticalalerts.priority").trim()); long timeRange = Long.parseLong(preferences.getValue(".dashContent.criticalalerts.past").trim()); list = eventsBoss.findRecentAlerts(user, count, priority, timeRange, null); } catch (Exception e) { log.warn("Error finding recent alerts", e); list = new ArrayList<Escalatable>(); } for (Escalatable alert : list) { AlertDefinitionInterface defInfo = alert.getDefinition().getDefinitionInfo(); AppdefEntityID aeid = AppdefUtil.newAppdefEntityId(defInfo.getResource()); DateSpecifics specs = new DateSpecifics(); specs.setDateFormat( new SimpleDateFormat(res.getMessage(Constants.UNIT_FORMAT_PREFIX_KEY + "epoch-millis"))); FormattedNumber fmtd = UnitsFormat.format(new UnitNumber(alert.getAlertInfo().getTimestamp(), UnitsConstants.UNIT_DATE, UnitsConstants.SCALE_MILLI), request.getLocale(), specs); UriTemplate uriTemplate = new UriTemplate( feed.getBaseUrl() + "/alerts/Alerts.do?mode={mode}&a={alertId}&eid={entityId}"); String desc; if (alert.getAlertInfo().isFixed()) { desc = fmtd.toString() + " " + res.getMessage("parenthesis", res.getMessage("resource.common.alert.action.fixed.label")); } else { desc = "<table cellspacing=4><tr>" + "<td>" + fmtd.toString() + "</td>" + "<td><a href='" + response.encodeURL( uriTemplate.expand("FIXED", alert.getId(), aeid.getAppdefKey()).toASCIIString()) + "'>" + res.getMessage("resource.common.alert.action.fixed.label") + "</a></td>"; if (alert.isAcknowledgeable()) { desc += "<td><a href='" + response.encodeURL(uriTemplate .expand("ACKNOWLEDGE", alert.getId(), aeid.getAppdefKey()).toASCIIString()) + "'>" + res.getMessage("resource.common.alert.action.acknowledge.label") + "</a></td></tr></table>"; } } AuthzSubject subject = authzBoss.getCurrentSubject(user); AppdefEntityValue resource = new AppdefEntityValue(aeid, subject); String link = response .encodeURL(uriTemplate.expand("viewAlert", alert.getId(), aeid.getAppdefKey()).toASCIIString()); feed.addItem(resource.getName() + " " + defInfo.getName(), link, desc, alert.getAlertInfo().getTimestamp()); } request.setAttribute("rssFeed", feed); return mapping.findForward(Constants.RSS_URL); } }