DeleteGroupOperation.java

/**
 * Copyright (c) Istituto Nazionale di Fisica Nucleare (INFN). 2006-2016
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.glite.security.voms.admin.operations.groups;

import org.glite.security.voms.admin.event.EventManager;
import org.glite.security.voms.admin.event.vo.acl.ACLDeletedEvent;
import org.glite.security.voms.admin.event.vo.group.GroupDeletedEvent;
import org.glite.security.voms.admin.operations.BaseVomsOperation;
import org.glite.security.voms.admin.operations.VOMSContext;
import org.glite.security.voms.admin.operations.VOMSOperation;
import org.glite.security.voms.admin.operations.VOMSPermission;
import org.glite.security.voms.admin.persistence.dao.VOMSGroupDAO;
import org.glite.security.voms.admin.persistence.error.NoSuchGroupException;
import org.glite.security.voms.admin.persistence.model.ACL;
import org.glite.security.voms.admin.persistence.model.VOMSGroup;
import org.glite.security.voms.admin.util.PathNamingScheme;

public class DeleteGroupOperation extends BaseVomsOperation {

  String groupName = null;

  Long groupId;

  VOMSGroup group;

  private DeleteGroupOperation(String groupName) {

    this.groupName = groupName;
  }

  private DeleteGroupOperation(VOMSGroup g) {

    this.group = g;
  }

  private DeleteGroupOperation(Long id) {

    this.groupId = id;

  }

  protected Object doExecute() {

    if (group == null) {
      if (groupName != null)
        group = VOMSGroupDAO.instance().findByName(groupName);
      else
        group = VOMSGroupDAO.instance().findById(groupId);
    }

    if (group == null) {

      String msg;

      if (groupName == null)
        msg = "Group having id '" + groupId + "' not found in database.";
      else
        msg = "Group '" + groupName + "' not found in database.";

      throw new NoSuchGroupException(msg);

    }

    ACL groupACL  = group.getACL();
    
    VOMSGroupDAO.instance().delete(group);
    EventManager.instance().dispatch(new GroupDeletedEvent(group));
    EventManager.instance().dispatch(new ACLDeletedEvent(groupACL));
    
    return group;
  }

  public static DeleteGroupOperation instance(String groupName) {

    return new DeleteGroupOperation(groupName);
  }

  public static VOMSOperation instance(VOMSGroup g) {

    return new DeleteGroupOperation(g);
  }

  public static VOMSOperation instance(Long id) {

    return new DeleteGroupOperation(id);

  }

  protected void setupPermissions() {

    VOMSContext ctxt;

    if (group == null) {

      if (groupName != null) {
        String parentGroupName = PathNamingScheme.getParentGroupName(groupName);

        VOMSGroup parentGroup = VOMSGroupDAO.instance().findByName(
          parentGroupName);

        if (parentGroup == null)
          throw new NoSuchGroupException("Group '" + parentGroupName
            + "' not found in database!");

        ctxt = VOMSContext.instance(parentGroup);

      } else {

        VOMSGroup g = VOMSGroupDAO.instance().findById(groupId);

        if (g == null)
          throw new NoSuchGroupException("Group having id '" + groupId
            + "' not found in database!");

        ctxt = VOMSContext.instance(g.getParent());
      }

    } else
      ctxt = VOMSContext.instance(group.getParent());

    addRequiredPermission(ctxt, VOMSPermission.getContainerRWPermissions());

  }
}