/**
* 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 com.alibaba.jstorm.hdfs.trident.format;
import java.io.Serializable;
import java.util.Map;
/**
* Formatter interface for determining HDFS file names.
*
*/
public interface FileNameFormat extends Serializable {
void prepare(Map conf, int partitionIndex, int numPartitions);
/**
* Returns the filename the HdfsBolt will create.
* @param rotation the current file rotation number (incremented on every rotation)
* @param timeStamp current time in milliseconds when the rotation occurs
* @return
*/
String getName(long rotation, long timeStamp);
String getPath();
}