/**
* 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.bolt.format;
import backtype.storm.task.TopologyContext;
import java.net.InetAddress;
import java.net.UnknownHostException;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.Map;
public class SimpleFileNameFormat implements FileNameFormat {
private static final long serialVersionUID = 1L;
private String componentId;
private int taskId;
private String host;
private String path = "/storm";
private String name = "$TIME.$NUM.txt";
private String timeFormat = "yyyyMMddHHmmss";
@Override
public String getName(long rotation, long timeStamp) {
// compile parameters
SimpleDateFormat dateFormat = new SimpleDateFormat(timeFormat);
String ret = name
.replace("$TIME", dateFormat.format(new Date(timeStamp)))
.replace("$NUM", String.valueOf(rotation))
.replace("$HOST", host)
.replace("$COMPONENT", componentId)
.replace("$TASK", String.valueOf(taskId));
return ret;
}
@Override
public String getPath() {
return path;
}
@SuppressWarnings("unchecked")
@Override
public void prepare(Map conf, TopologyContext topologyContext) {
this.componentId = topologyContext.getThisComponentId();
this.taskId = topologyContext.getThisTaskId();
try {
this.host = InetAddress.getLocalHost().getCanonicalHostName();
} catch (UnknownHostException e) {
throw new RuntimeException(e);
}
}
public SimpleFileNameFormat withPath(String path) {
this.path = path;
return this;
}
/**
* support parameters:<br/>
* $TIME - current time. use <code>withTimeFormat</code> to format.<br/>
* $NUM - rotation number<br/>
* $HOST - local host name<br/>
* $COMPONENT - component id<br/>
* $TASK - task id<br/>
*
* @param name
* file name
* @return
*/
public SimpleFileNameFormat withName(String name) {
this.name = name;
return this;
}
public SimpleFileNameFormat withTimeFormat(String timeFormat) {
//check format
try{
new SimpleDateFormat(timeFormat);
}catch (Exception e) {
throw new IllegalArgumentException("invalid timeFormat: "+e.getMessage());
}
this.timeFormat = timeFormat;
return this;
}
}