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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.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))
}
logInfo(s"Pushed $testData:\n\t ${shardIdToSeqNumbers.mkString("\n\t")}")
shardIdToSeqNumbers.toMap
}
def describeStream(streamNameToDescribe: String = streamName): Option[StreamDescription] = {
try {
val describeStreamRequest = new DescribeStreamRequest().withStreamName(streamNameToDescribe)
val desc = kinesisClient.describeStream(describeStreamRequest).getStreamDescription()
Some(desc)
} catch {
case rnfe: ResourceNotFoundException =>
None
}
}
def deleteStream(): Unit = {
try {
if (describeStream().nonEmpty) {
val deleteStreamRequest = new DeleteStreamRequest()
kinesisClient.deleteStream(streamName)
}
} catch {
case e: Exception =>
logWarning(s"Could not delete stream $streamName")
}
}
def deleteDynamoDBTable(tableName: String): Unit = {
try {
val table = dynamoDB.getTable(tableName)
table.delete()
table.waitForDelete()
} catch {
case e: Exception =>
logWarning(s"Could not delete DynamoDB table $tableName")
}
}
private def findNonExistentStreamName(): String = {
var testStreamName: String = null
do {
Thread.sleep(TimeUnit.SECONDS.toMillis(describeStreamPollTimeSeconds))
testStreamName = s"KinesisTestUtils-${math.abs(Random.nextLong())}"
} while (describeStream(testStreamName).nonEmpty)
testStreamName
}
private def waitForStreamToBeActive(streamNameToWaitFor: String): Unit = {
val startTime = System.currentTimeMillis()
val endTime = startTime + TimeUnit.SECONDS.toMillis(createStreamTimeoutSeconds)
while (System.currentTimeMillis() < endTime) {
Thread.sleep(TimeUnit.SECONDS.toMillis(describeStreamPollTimeSeconds))
describeStream(streamNameToWaitFor).foreach { description =>
val streamStatus = description.getStreamStatus()
logDebug(s"\t- current state: $streamStatus\n")
if ("ACTIVE".equals(streamStatus)) {
return
}
}
}
require(false, s"Stream $streamName never became active")
}
}
private[kinesis] object KinesisTestUtils {
val envVarName = "RUN_KINESIS_TESTS"
val shouldRunTests = sys.env.get(envVarName) == Some("1")
def isAWSCredentialsPresent: Boolean = {
Try { new DefaultAWSCredentialsProviderChain().getCredentials() }.isSuccess
}
def getAWSCredentials(): AWSCredentials = {
assert(shouldRunTests,
"Kinesis test not enabled, should not attempt to get AWS credentials")
Try { new DefaultAWSCredentialsProviderChain().getCredentials() } match {
case Success(cred) => cred
case Failure(e) =>
throw new Exception("Kinesis tests enabled, but could get not AWS credentials")
}
}
}
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