spark Interval 源码
spark Interval 代码
文件路径：/streaming/src/main/scala/org/apache/spark/streaming/Interval.scala
/*
* 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.streaming
private[streaming]
class Interval(val beginTime: Time, val endTime: Time) {
def this(beginMs: Long, endMs: Long) = this(new Time(beginMs), new Time(endMs))
def duration(): Duration = endTime - beginTime
def + (time: Duration): Interval = {
new Interval(beginTime + time, endTime + time)
}
def - (time: Duration): Interval = {
new Interval(beginTime - time, endTime - time)
}
def < (that: Interval): Boolean = {
if (this.duration != that.duration) {
throw new Exception("Comparing two intervals with different durations [" + this + ", "
+ that + "]")
}
this.endTime < that.endTime
}
def <= (that: Interval): Boolean = (this < that || this == that)
def > (that: Interval): Boolean = !(this <= that)
def >= (that: Interval): Boolean = !(this < that)
override def toString: String = "[" + beginTime + ", " + endTime + "]"
}
private[streaming]
object Interval {
def currentInterval(duration: Duration): Interval = {
val time = new Time(System.currentTimeMillis)
val intervalBegin = time.floor(duration)
new Interval(intervalBegin, intervalBegin + duration)
}
}
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