/*
* 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.inventory.autogroup;
import java.util.List;
import org.rhq.core.domain.auth.Subject;
import org.rhq.core.domain.authz.Permission;
import org.rhq.core.domain.common.EntityContext;
import org.rhq.core.domain.resource.Resource;
import org.rhq.core.domain.resource.ResourceType;
import org.rhq.enterprise.gui.util.EnterpriseFacesContextUtility;
import org.rhq.enterprise.gui.util.WebUtility;
import org.rhq.enterprise.server.authz.AuthorizationManagerLocal;
import org.rhq.enterprise.server.resource.ResourceTypeNotFoundException;
import org.rhq.enterprise.server.util.LookupUtil;
public class AutoGroupUIBean {
public static final String MANAGED_BEAN_NAME = "AutoGroupUIBean";
EntityContext context;
private Resource parentResource;
private ResourceType childResourceType;
private Subject subject;
private boolean measurementManager;
public AutoGroupUIBean() {
subject = EnterpriseFacesContextUtility.getSubject();
context = WebUtility.getEntityContext();
parentResource = LookupUtil.getResourceManager().getResourceById(subject, context.getParentResourceId());
try {
childResourceType = LookupUtil.getResourceTypeManager().getResourceTypeById(subject, context.getResourceTypeId());
} catch (ResourceTypeNotFoundException e) {
throw new IllegalArgumentException(e);
}
this.measurementManager = determineMeasurementManager();
}
public boolean isMeasurementManager() {
return this.measurementManager;
}
public Resource getParentResource() {
return parentResource;
}
public ResourceType getChildResourceType() {
return childResourceType;
}
/**
* To manipulate autogroup schedules the subject must have measurement perms for each of the AG's
* resources. There is no simple query for this. Since this is rare and AG size is usually fairly small
* we'll use a brute force way to determine this, get the AG resources and test each individually.<BR>
* <BR>
* Another approach would be to create and perform two queries, the first just a count of AG members, the
* second a count of AG members with the measurement permission, then compare the counts.
*
*
* @return
*/
private boolean determineMeasurementManager() {
AuthorizationManagerLocal authManager = LookupUtil.getAuthorizationManager();
if (authManager.isInventoryManager(subject)) {
return true;
}
List<Resource> resources = LookupUtil.getResourceGroupManager().findResourcesForAutoGroup(this.subject, this.getParentResource().getId(),
this.getChildResourceType().getId());
// Note, authManager does offer a single query solution for this but it has limits and is inefficient, for now let's
// opt for more round trips on the assumption that the AG size is typically small.
for (Resource resource : resources) {
if (!authManager.hasResourcePermission(subject, Permission.MANAGE_MEASUREMENTS, resource.getId())) {
return false;
}
}
return true;
}
}