/*
* 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.ha;
import javax.faces.model.DataModel;
import org.rhq.core.domain.auth.Subject;
import org.rhq.core.domain.authz.Permission;
import org.rhq.core.domain.cloud.FailoverListDetails;
import org.rhq.core.domain.resource.Agent;
import org.rhq.core.domain.util.PageControl;
import org.rhq.core.domain.util.PageList;
import org.rhq.core.gui.util.FacesContextUtility;
import org.rhq.enterprise.gui.common.framework.PagedDataTableUIBean;
import org.rhq.enterprise.gui.common.paging.PageControlView;
import org.rhq.enterprise.gui.common.paging.PagedListDataModel;
import org.rhq.enterprise.gui.util.EnterpriseFacesContextUtility;
import org.rhq.enterprise.server.authz.PermissionException;
import org.rhq.enterprise.server.cloud.TopologyManagerLocal;
import org.rhq.enterprise.server.core.AgentManagerLocal;
import org.rhq.enterprise.server.util.LookupUtil;
/**
* Bean responsible for the agent details display page. This bean will also provide a pagable list of the
* failover servers for a particular agent.
*
* @author Jason Dobies
*/
public class ViewAgentUIBean extends PagedDataTableUIBean {
public static final String MANAGED_BEAN_NAME = "ViewAgentUIBean";
private AgentManagerLocal agentManager = LookupUtil.getAgentManager();
private TopologyManagerLocal topologyManager = LookupUtil.getTopologyManager();
private Agent agent;
public Agent getAgent() {
if (agent == null) {
hasPermission();
int agentId = FacesContextUtility.getRequiredRequestParameter("agentId", Integer.class);
agent = agentManager.getAgentByID(agentId);
if (!hasPermissionToViewSecurityToken()) {
agent.setAgentToken("******");
}
}
return agent;
}
@Override
public DataModel getDataModel() {
if (dataModel == null) {
dataModel = new ViewAgentUIBeanDataModel(PageControlView.AgentFailoverListView, MANAGED_BEAN_NAME);
}
return dataModel;
}
private class ViewAgentUIBeanDataModel extends PagedListDataModel<FailoverListDetails> {
private ViewAgentUIBeanDataModel(PageControlView view, String beanName) {
super(view, beanName);
}
@Override
public PageList<FailoverListDetails> fetchPage(PageControl pc) {
int agentId = getAgent().getId();
PageList<FailoverListDetails> pageList = topologyManager.getFailoverListDetailsByAgentId(
EnterpriseFacesContextUtility.getSubject(), agentId, pc);
return pageList;
}
}
/**
* Throws a permission exception if the user is not allowed to access this functionality.
*/
private void hasPermission() {
Subject subject = EnterpriseFacesContextUtility.getSubject();
if (!LookupUtil.getAuthorizationManager().hasGlobalPermission(subject, Permission.MANAGE_INVENTORY)) {
throw new PermissionException("User [" + subject.getName()
+ "] does not have the proper permissions to view or manage agents");
}
}
private boolean hasPermissionToViewSecurityToken() {
Subject subject = EnterpriseFacesContextUtility.getSubject();
return LookupUtil.getAuthorizationManager().hasGlobalPermission(subject, Permission.MANAGE_SECURITY);
}
}