com.surevine.alfresco.repo.action.GrantEveryoneDeletePermissionsAction.java Source code

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Here is the source code for com.surevine.alfresco.repo.action.GrantEveryoneDeletePermissionsAction.java

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/*
 * Copyright (C) 2008-2010 Surevine Limited.
 *   
 * Although intended for deployment and use alongside Alfresco this module should
 * be considered 'Not a Contribution' as defined in Alfresco'sstandard contribution agreement, see
 * http://www.alfresco.org/resource/AlfrescoContributionAgreementv2.pdf
 * 
 * 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; either version 2
 * of the License, or (at your option) any later version.
 * 
 * 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., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
*/
package com.surevine.alfresco.repo.action;

import java.util.List;

import org.alfresco.model.ContentModel;
import org.alfresco.repo.action.executer.ActionExecuterAbstractBase;
import org.alfresco.repo.transaction.RetryingTransactionHelper;
import org.alfresco.service.cmr.action.Action;
import org.alfresco.service.cmr.action.ParameterDefinition;
import org.alfresco.service.cmr.repository.NodeRef;
import org.alfresco.service.cmr.repository.NodeService;
import org.alfresco.service.cmr.security.PermissionService;
import org.alfresco.service.transaction.TransactionService;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;

/**
 * Really simple action designed to work around the fact that ALF-8194 effectively prevents the creation of new permission groups
 * by side-stepping the "proper" way of doing things and granting delete permission explicitly
 * @author simonw
 */
public class GrantEveryoneDeletePermissionsAction extends ActionExecuterAbstractBase {

    private static final Log LOGGER = LogFactory.getLog(GrantEveryoneDeletePermissionsAction.class);

    private PermissionService _permissionService;

    private NodeService _nodeService;

    private TransactionService _transactionService;

    private static volatile Integer _counter = 0;

    public void setPermissionService(PermissionService permissionService) {
        _permissionService = permissionService;
    }

    public void setNodeService(NodeService nodeService) {
        _nodeService = nodeService;
    }

    public void setTransactionService(TransactionService transactionService) {
        _transactionService = transactionService;
    }

    @Override
    protected synchronized void executeImpl(final Action action, final NodeRef nodeRef) {
        try {
            if (nodeRef != null && _nodeService.exists(nodeRef)) {
                final boolean setAllow = _nodeService.getType(nodeRef).equals(ContentModel.TYPE_FOLDER);

                if (LOGGER.isDebugEnabled()) {
                    LOGGER.debug(String.format("Setting delete permission to %b for %s.", setAllow, nodeRef));
                }
                synchronized (_counter) {
                    _counter++;
                }
                _transactionService.getRetryingTransactionHelper()
                        .doInTransaction(new RetryingTransactionHelper.RetryingTransactionCallback<Boolean>() {
                            public Boolean execute() throws Throwable {
                                if (LOGGER.isDebugEnabled()) {
                                    LOGGER.debug(_counter + " threads in progress");
                                }
                                try {
                                    _permissionService.setPermission(nodeRef, "GROUP_EVERYONE",
                                            PermissionService.DELETE, setAllow);
                                    LOGGER.debug("Permissions Set");
                                } catch (Throwable t) {
                                    if (LOGGER.isDebugEnabled()) {
                                        LOGGER.debug(
                                                "Throwable " + t.getClass() + " caught in retrying transaction");
                                    }
                                    throw t;
                                } finally {
                                    _counter--;
                                }

                                return Boolean.TRUE;
                            }
                        }, false, true);
            }
        } catch (Exception e) { //If an exception occurs here then still allow the creation of the node and log a warning
            LOGGER.error(e.getMessage(), e);
        }
    }

    @Override
    protected void addParameterDefinitions(List<ParameterDefinition> arg0) { //Intentionally left blank
    }
}