org.apache.spark.sql.execution.streaming.StreamProgress.scala Maven / Gradle / Ivy
/*
* 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.sql.execution.streaming
import scala.collection.{immutable, GenTraversableOnce}
/**
* A helper class that looks like a Map[Source, Offset].
*/
class StreamProgress(
val baseMap: immutable.Map[BaseStreamingSource, Offset] =
new immutable.HashMap[BaseStreamingSource, Offset])
extends scala.collection.immutable.Map[BaseStreamingSource, Offset] {
def toOffsetSeq(source: Seq[BaseStreamingSource], metadata: OffsetSeqMetadata): OffsetSeq = {
OffsetSeq(source.map(get), Some(metadata))
}
override def toString: String =
baseMap.map { case (k, v) => s"$k: $v"}.mkString("{", ",", "}")
override def +[B1 >: Offset](kv: (BaseStreamingSource, B1)): Map[BaseStreamingSource, B1] = {
baseMap + kv
}
override def get(key: BaseStreamingSource): Option[Offset] = baseMap.get(key)
override def iterator: Iterator[(BaseStreamingSource, Offset)] = baseMap.iterator
override def -(key: BaseStreamingSource): Map[BaseStreamingSource, Offset] = baseMap - key
def ++(updates: GenTraversableOnce[(BaseStreamingSource, Offset)]): StreamProgress = {
new StreamProgress(baseMap ++ updates)
}
}