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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 org.apache.spark.annotation.Experimental
import org.apache.spark.storage.StorageLevel
import org.apache.spark.streaming.Duration
import org.apache.spark.streaming.StreamingContext
import org.apache.spark.streaming.api.java.JavaReceiverInputDStream
import org.apache.spark.streaming.api.java.JavaStreamingContext
import org.apache.spark.streaming.dstream.ReceiverInputDStream
import com.amazonaws.services.kinesis.clientlibrary.lib.worker.InitialPositionInStream
/**
* Helper class to create Amazon Kinesis Input Stream
* :: Experimental ::
*/
@Experimental
object KinesisUtils {
/**
* Create an InputDStream that pulls messages from a Kinesis stream.
* :: Experimental ::
* @param ssc StreamingContext object
* @param streamName Kinesis stream name
* @param endpointUrl Url of Kinesis service (e.g., https://kinesis.us-east-1.amazonaws.com)
* @param checkpointInterval Checkpoint interval for Kinesis checkpointing.
* See the Kinesis Spark Streaming documentation for more
* details on the different types of checkpoints.
* @param initialPositionInStream In the absence of Kinesis checkpoint info, this is the
* worker's initial starting position in the stream.
* The values are either the beginning of the stream
* per Kinesis' limit of 24 hours
* (InitialPositionInStream.TRIM_HORIZON) or
* the tip of the stream (InitialPositionInStream.LATEST).
* @param storageLevel Storage level to use for storing the received objects
*
* @return ReceiverInputDStream[Array[Byte]]
*/
@Experimental
def createStream(
ssc: StreamingContext,
streamName: String,
endpointUrl: String,
checkpointInterval: Duration,
initialPositionInStream: InitialPositionInStream,
storageLevel: StorageLevel): ReceiverInputDStream[Array[Byte]] = {
ssc.receiverStream(new KinesisReceiver(ssc.sc.appName, streamName, endpointUrl,
checkpointInterval, initialPositionInStream, storageLevel))
}
/**
* Create a Java-friendly InputDStream that pulls messages from a Kinesis stream.
* :: Experimental ::
* @param jssc Java StreamingContext object
* @param streamName Kinesis stream name
* @param endpointUrl Url of Kinesis service (e.g., https://kinesis.us-east-1.amazonaws.com)
* @param checkpointInterval Checkpoint interval for Kinesis checkpointing.
* See the Kinesis Spark Streaming documentation for more
* details on the different types of checkpoints.
* @param initialPositionInStream In the absence of Kinesis checkpoint info, this is the
* worker's initial starting position in the stream.
* The values are either the beginning of the stream
* per Kinesis' limit of 24 hours
* (InitialPositionInStream.TRIM_HORIZON) or
* the tip of the stream (InitialPositionInStream.LATEST).
* @param storageLevel Storage level to use for storing the received objects
*
* @return JavaReceiverInputDStream[Array[Byte]]
*/
@Experimental
def createStream(
jssc: JavaStreamingContext,
streamName: String,
endpointUrl: String,
checkpointInterval: Duration,
initialPositionInStream: InitialPositionInStream,
storageLevel: StorageLevel): JavaReceiverInputDStream[Array[Byte]] = {
jssc.receiverStream(new KinesisReceiver(jssc.ssc.sc.appName, streamName,
endpointUrl, checkpointInterval, initialPositionInStream, storageLevel))
}
}
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