-
Notifications
You must be signed in to change notification settings - Fork 28k
/
JavaTestUtils.scala
108 lines (96 loc) · 4.03 KB
/
JavaTestUtils.scala
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
/*
* 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
import scala.collection.mutable.{SynchronizedBuffer, ArrayBuffer}
import scala.reflect.ClassTag
import java.util.{List => JList}
import org.apache.spark.streaming.api.java.{JavaPairDStream, JavaDStreamLike, JavaDStream, JavaStreamingContext}
import org.apache.spark.streaming._
import java.util.ArrayList
import collection.JavaConversions._
import org.apache.spark.api.java.JavaRDDLike
import org.apache.spark.streaming.dstream.DStream
/** Exposes streaming test functionality in a Java-friendly way. */
trait JavaTestBase extends TestSuiteBase {
/**
* Create a [[org.apache.spark.streaming.TestInputStream]] and attach it to the supplied context.
* The stream will be derived from the supplied lists of Java objects.
*/
def attachTestInputStream[T](
ssc: JavaStreamingContext,
data: JList[JList[T]],
numPartitions: Int) = {
val seqData = data.map(Seq(_:_*))
implicit val cm: ClassTag[T] =
implicitly[ClassTag[AnyRef]].asInstanceOf[ClassTag[T]]
val dstream = new TestInputStream[T](ssc.ssc, seqData, numPartitions)
new JavaDStream[T](dstream)
}
/**
* Attach a provided stream to it's associated StreamingContext as a
* [[org.apache.spark.streaming.TestOutputStream]].
**/
def attachTestOutputStream[T, This <: JavaDStreamLike[T, This, R], R <: JavaRDDLike[T, R]](
dstream: JavaDStreamLike[T, This, R]) = {
implicit val cm: ClassTag[T] =
implicitly[ClassTag[AnyRef]].asInstanceOf[ClassTag[T]]
val ostream = new TestOutputStreamWithPartitions(dstream.dstream)
ostream.register()
}
/**
* Process all registered streams for a numBatches batches, failing if
* numExpectedOutput RDD's are not generated. Generated RDD's are collected
* and returned, represented as a list for each batch interval.
*
* Returns a list of items for each RDD.
*/
def runStreams[V](
ssc: JavaStreamingContext, numBatches: Int, numExpectedOutput: Int): JList[JList[V]] = {
implicit val cm: ClassTag[V] =
implicitly[ClassTag[AnyRef]].asInstanceOf[ClassTag[V]]
val res = runStreams[V](ssc.ssc, numBatches, numExpectedOutput)
val out = new ArrayList[JList[V]]()
res.map(entry => out.append(new ArrayList[V](entry)))
out
}
/**
* Process all registered streams for a numBatches batches, failing if
* numExpectedOutput RDD's are not generated. Generated RDD's are collected
* and returned, represented as a list for each batch interval.
*
* Returns a sequence of RDD's. Each RDD is represented as several sequences of items, each
* representing one partition.
*/
def runStreamsWithPartitions[V](ssc: JavaStreamingContext, numBatches: Int,
numExpectedOutput: Int): JList[JList[JList[V]]] = {
implicit val cm: ClassTag[V] =
implicitly[ClassTag[AnyRef]].asInstanceOf[ClassTag[V]]
val res = runStreamsWithPartitions[V](ssc.ssc, numBatches, numExpectedOutput)
val out = new ArrayList[JList[JList[V]]]()
res.map{entry =>
val lists = entry.map(new ArrayList[V](_))
out.append(new ArrayList[JList[V]](lists))
}
out
}
}
object JavaTestUtils extends JavaTestBase {
override def maxWaitTimeMillis = 20000
}
object JavaCheckpointTestUtils extends JavaTestBase {
override def actuallyWait = true
}