/**
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you 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.apache.ambari.view.pig.resources;
import org.apache.ambari.view.ViewContext;
import org.apache.ambari.view.pig.persistence.utils.ItemNotFound;
import org.apache.ambari.view.pig.persistence.utils.PersonalResource;
import java.util.concurrent.Callable;
/**
* Resource manager that returns only user owned elements from DB
* @param <T> Data type with ID and Owner
*/
public class PersonalCRUDResourceManager<T extends PersonalResource> extends CRUDResourceManager<T> {
protected ViewContext context;
protected boolean ignorePermissions = false;
/**
* Constructor
* @param responseClass model class
* @param context View Context instance
*/
public PersonalCRUDResourceManager(Class<T> responseClass, ViewContext context) {
super(responseClass);
this.context = context;
}
@Override
public T update(T newObject, String id) throws ItemNotFound {
T object = getPigStorage().load(this.resourceClass, Integer.parseInt(id));
if (object.getOwner().compareTo(this.context.getUsername()) != 0) {
throw new ItemNotFound();
}
newObject.setOwner(this.context.getUsername());
return super.update(newObject, id);
}
@Override
public T save(T object) {
object.setOwner(this.context.getUsername());
return super.save(object);
}
@Override
protected boolean checkPermissions(T object) {
if (ignorePermissions)
return true;
return object.getOwner().compareTo(this.context.getUsername()) == 0;
}
@Override
protected ViewContext getContext() {
return context;
}
/**
* Execute action ignoring objects owner
* @param actions callable to execute
* @return value returned from actions
* @throws Exception
*/
public <T> T ignorePermissions(Callable<T> actions) throws Exception {
ignorePermissions = true;
T result;
try {
result = actions.call();
} finally {
ignorePermissions = false;
}
return result;
}
protected String getUsername() {
String userName = context.getProperties().get("dataworker.username");
if (userName == null)
userName = context.getUsername();
return userName;
}
}