Github user zsxwing commented on a diff in the pull request:
https://github.com/apache/spark/pull/7413#discussion_r34788544
--- Diff:
extras/kinesis-asl/src/main/scala/org/apache/spark/streaming/kinesis/KinesisTestUtils.scala
---
@@ -0,0 +1,196 @@
+/*
+ * 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.kinesis
+
+import java.nio.ByteBuffer
+import java.util.concurrent.TimeUnit
+
+import scala.collection.mutable
+import scala.collection.mutable.ArrayBuffer
+import scala.util.{Failure, Random, Success, Try}
+
+import com.amazonaws.auth.{AWSCredentials,
DefaultAWSCredentialsProviderChain}
+import com.amazonaws.regions.RegionUtils
+import com.amazonaws.services.dynamodbv2.AmazonDynamoDBClient
+import com.amazonaws.services.dynamodbv2.document.DynamoDB
+import com.amazonaws.services.kinesis.AmazonKinesisClient
+import com.amazonaws.services.kinesis.model._
+
+import org.apache.spark.Logging
+
+/**
+ * Shared utility methods for performing Kinesis tests that actually
transfer data
+ */
+private class KinesisTestUtils(
+ val endpointUrl: String = "https://kinesis.us-west-2.amazonaws.com";,
+ _regionName: String = "") extends Logging {
+
+ val regionName = if (_regionName.length == 0) {
+ RegionUtils.getRegionByEndpoint(endpointUrl).getName()
+ } else {
+ RegionUtils.getRegion(_regionName).getName()
+ }
+ val streamShardCount = 2
+
+ private val createStreamTimeoutSeconds = 300
+ private val describeStreamPollTimeSeconds = 1
+
+ @volatile
+ private var streamCreated = false
+ private var _streamName: String = _
+
+ private lazy val kinesisClient = {
+ val client = new
AmazonKinesisClient(KinesisTestUtils.getAWSCredentials())
+ client.setEndpoint(endpointUrl)
+ client
+ }
+
+ private lazy val dynamoDB = {
+ val dynamoDBClient = new AmazonDynamoDBClient(new
DefaultAWSCredentialsProviderChain())
+ dynamoDBClient.setRegion(RegionUtils.getRegion(regionName))
+ new DynamoDB(dynamoDBClient)
+ }
+
+ def streamName: String = {
+ require(streamCreated, "Stream not yet created, call createStream() to
create one")
+ _streamName
+ }
+
+ def createStream(): Unit = {
+ logInfo("Creating stream")
+ require(!streamCreated, "Stream already created")
+ _streamName = findNonExistentStreamName()
+
+ // Create a stream. The number of shards determines the provisioned
throughput.
+ val createStreamRequest = new CreateStreamRequest()
+ createStreamRequest.setStreamName(_streamName)
+ createStreamRequest.setShardCount(2)
+ kinesisClient.createStream(createStreamRequest)
+
+ // The stream is now being created. Wait for it to become active.
+ waitForStreamToBeActive(_streamName)
+ streamCreated = true
+ logInfo("Created stream")
+ }
+
+ /**
+ * Push data to Kinesis stream and return a map of
+ * shardId -> seq of (data, seq number) pushed to corresponding shard
+ */
+ def pushData(testData: Seq[Int]): Map[String, Seq[(Int, String)]] = {
+ require(streamCreated, "Stream not yet created, call createStream() to
create one")
+ val shardIdToSeqNumbers = new mutable.HashMap[String,
ArrayBuffer[(Int, String)]]()
+
+ testData.foreach { num =>
+ val str = num.toString
+ val putRecordRequest = new
PutRecordRequest().withStreamName(streamName)
+ .withData(ByteBuffer.wrap(str.getBytes()))
+ .withPartitionKey(str)
+
+ val putRecordResult = kinesisClient.putRecord(putRecordRequest)
+ val shardId = putRecordResult.getShardId
+ val seqNumber = putRecordResult.getSequenceNumber()
+ val sentSeqNumbers = shardIdToSeqNumbers.getOrElseUpdate(shardId,
+ new ArrayBuffer[(Int, String)]())
+ sentSeqNumbers += ((num, seqNumber))
+
--- End diff --
extra line
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