/*
* Copyright 2013 the original author or authors.
*
* 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.springframework.yarn.am.assign;
import org.apache.hadoop.yarn.api.records.ContainerId;
/**
* Interface storing and keeping data associated with
* a container. This is useful when i.e. container is
* failing and appmaster needs to decide what to do
* with it.
*
* @author Janne Valkealahti
*
* @param <E> the type of data assigned
*
*/
public interface ContainerAssign<E> {
/**
* Assign data with container.
*
* @param containerId the container id
* @param data the data
*/
void assign(ContainerId containerId, E data);
/**
* Gets the assigned data.
*
* @param containerId the container id
* @return the assigned data
*/
E getAssignedData(ContainerId containerId);
/**
* Gets the assigned container.
*
* @param data the data
* @return the assigned container
*/
ContainerId getAssignedContainer(E data);
}