/*
* RHQ Management Platform
* Copyright (C) 2005-2008 Red Hat, Inc.
* All rights reserved.
*
* This program 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 version 2 of the License.
*
* 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., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
package org.rhq.enterprise.gui.legacy.action.resource.common.events;
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.rhq.core.domain.auth.Subject;
import org.rhq.core.domain.common.EntityContext;
import org.rhq.core.domain.event.EventSeverity;
import org.rhq.core.domain.event.composite.EventComposite;
import org.rhq.core.domain.util.PageControl;
import org.rhq.core.domain.util.PageList;
import org.rhq.enterprise.gui.legacy.ParamConstants;
import org.rhq.enterprise.gui.legacy.WebUser;
import org.rhq.enterprise.gui.legacy.action.resource.common.monitor.visibility.MetricsControlFormPrepareAction;
import org.rhq.enterprise.gui.legacy.util.SessionUtils;
import org.rhq.enterprise.gui.util.WebUtility;
import org.rhq.enterprise.server.event.EventManagerLocal;
import org.rhq.enterprise.server.measurement.MeasurementPreferences;
import org.rhq.enterprise.server.measurement.MeasurementPreferences.MetricRangePreferences;
import org.rhq.enterprise.server.util.LookupUtil;
/**
* @author Heiko W. Rupp
* @author Jay Shaughnessy
*/
public class EventsFormPrepareAction extends MetricsControlFormPrepareAction {
EventManagerLocal eventManager;
Log log = LogFactory.getLog(EventsFormPrepareAction.class);
@Override
public ActionForward execute(ActionMapping mapping, ActionForm form, HttpServletRequest request,
HttpServletResponse response) throws Exception {
EventsForm eForm = (EventsForm) form;
eventManager = LookupUtil.getEventManager();
// eventId never seemed to be used in the impl of the SLSB methods it was passed to
//int eventId = WebUtility.getOptionalIntRequestParameter(request, "eventId", -1);
int resourceId = WebUtility.getOptionalIntRequestParameter(request, ParamConstants.RESOURCE_ID_PARAM, -1);
int groupId = WebUtility.getOptionalIntRequestParameter(request, ParamConstants.GROUP_ID_PARAM, -1);
int parent = WebUtility.getOptionalIntRequestParameter(request, "parent", -1);
int type = WebUtility.getOptionalIntRequestParameter(request, "type", -1);
WebUser user = SessionUtils.getWebUser(request.getSession());
MeasurementPreferences preferences = user.getMeasurementPreferences();
MetricRangePreferences rangePreferences = preferences.getMetricRangePreferences();
Subject subject = user.getSubject();
// Get metric range defaults
long begin = rangePreferences.begin;
long end = rangePreferences.end;
eForm.setRn(rangePreferences.lastN);
request.getSession().setAttribute("rn", rangePreferences.lastN);
eForm.setRu(rangePreferences.unit);
request.getSession().setAttribute("ru", rangePreferences.unit);
PageControl pc = WebUtility.getPageControl(request);
// Get the filters set on the form. If set these settings take precedence
String severityFilter = eForm.getSevFilter();
String sourceFilter = eForm.getSourceFilter();
String searchString = eForm.getSearchString();
// If the form does not provide filter values then check for filters passed as parameters.
// Pagination bypasses the form settings so if navigating
// from pagination we maintain the filter information only via request parameter.
if (null == severityFilter) {
severityFilter = WebUtility.getOptionalRequestParameter(request, "pSeverity", null);
eForm.setSevFilter(severityFilter);
}
if (null == sourceFilter) {
sourceFilter = WebUtility.getOptionalRequestParameter(request, "pSource", null);
eForm.setSourceFilter(sourceFilter);
}
if (null == searchString) {
searchString = WebUtility.getOptionalRequestParameter(request, "pSearch", null);
eForm.setSearchString(searchString);
}
// Perform the query and get the (filtered) events
EventSeverity eventSeverityFilter = getSeverityFromString(eForm.getSevFilter());
EntityContext context = new EntityContext(resourceId, groupId, parent, type);
List<EventComposite> events = eventManager.findEventComposites(subject, context, begin, end,
new EventSeverity[] { eventSeverityFilter }, sourceFilter, searchString, pc);
// highlight filter info
for (EventComposite event : events) {
event.setEventDetail(htmlFormat(event.getEventDetail(), eForm.getSearchString()));
event.setSourceLocation(htmlFormat(event.getSourceLocation(), eForm.getSourceFilter()));
}
eForm.setEvents((PageList<EventComposite>) events);
return null;
}
/**
* Try to parse the passed String an return an appropriate severity value
* @param sevFilter
* @return
*/
private EventSeverity getSeverityFromString(String sevFilter) {
if (sevFilter == null || sevFilter.equals("") || (sevFilter.equals("ALL")))
return null;
try {
EventSeverity sev = EventSeverity.valueOf(sevFilter);
return sev;
} catch (IllegalArgumentException iae) {
log.warn("Illegal EventSeverity passed: " + sevFilter);
return null;
}
}
/**
* Format the input so that CR becomes a html-break and
* a searchResult will be highlighted
*
* TODO extend and put in a Util class together with the version from {@link OneEventDetailAction}
*/
private String htmlFormat(String input, String searchResult) {
String output;
output = input.replaceAll("\\n", "<br/>\n");
if (searchResult != null && !searchResult.equals("")) {
output = output.replaceAll("(" + searchResult + ")", "<b>$1</b>");
}
return output;
}
}