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/*
* 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.spark.ui
import java.text.SimpleDateFormat
import java.util.Date
/**
* Utilities used throughout the web UI.
*/
private[spark] object WebUI {
// SimpleDateFormat is not thread-safe. Don't expose it to avoid improper use.
private val dateFormat = new ThreadLocal[SimpleDateFormat]() {
override def initialValue(): SimpleDateFormat = new SimpleDateFormat("yyyy/MM/dd HH:mm:ss")
}
def formatDate(date: Date): String = dateFormat.get.format(date)
def formatDate(timestamp: Long): String = dateFormat.get.format(new Date(timestamp))
def formatDuration(milliseconds: Long): String = {
val seconds = milliseconds.toDouble / 1000
if (seconds < 60) {
return "%.0f s".format(seconds)
}
val minutes = seconds / 60
if (minutes < 10) {
return "%.1f min".format(minutes)
} else if (minutes < 60) {
return "%.0f min".format(minutes)
}
val hours = minutes / 60
return "%.1f h".format(hours)
}
}
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