com.theupswell.appengine.counter.service.ShardedCounterService Maven / Gradle / Ivy

Go to download

Show more of this group Show more artifacts with this name
Show all versions of appengine-counter Show documentation

A sharded-counter implementation for Google Appengine from UpSwell

There is a newer version: 2.0.1

/**
 * Copyright (C) 2014 UpSwell LLC ([email protected])
 *
 * 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 com.theupswell.appengine.counter.service;

import com.theupswell.appengine.counter.Counter;

/**
 * A Counter Service that can retrieve, increment, decrement, and delete a named {@link Counter} using appengine
 * Datastore shards.
 * 
 * @author David Fuelling
 */
public interface ShardedCounterService extends CounterService
{

	/**
	 * Callback function used by TaskQueues to delete a particular counter and all of its shards.
	 * 
	 * @param counterName
	 */
	void onTaskQueueCounterDeletion(final String counterName);

}