AddDataShards.java - AWS Code Sample

AddDataShards.java

AddDataShards.java demonstrates how to increase shard count in an Amazon Kinesis data stream.

/* * Copyright Amazon.com, Inc. or its affiliates. All Rights Reserved. * * Licensed under the Apache License, Version 2.0 (the "License"). * You may not use this file except in compliance with the License. * A copy of the License is located at * * http://aws.amazon.com/apache2.0 * * or in the "license" file accompanying this file. This file 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 com.example.kinesis; import software.amazon.awssdk.regions.Region; import software.amazon.awssdk.services.kinesis.KinesisClient; import software.amazon.awssdk.services.kinesis.model.KinesisException; import software.amazon.awssdk.services.kinesis.model.UpdateShardCountRequest; import software.amazon.awssdk.services.kinesis.model.UpdateShardCountResponse; public class AddDataShards { public static void main(String[] args) { final String USAGE = "\n" + "Usage:\n" + " AddDataShards <streamName>\n\n" + "Where:\n" + " streamName - The Kinesis data stream (i.e., StockTradeStream)\n\n" + "Example:\n" + " AddDataShards StockTradeStream\n"; if (args.length < 1) { System.out.println(USAGE); System.exit(1); } String name = args[0]; String inputShards = "2"; int goalShards = Integer.parseInt(inputShards); Region region = Region.US_EAST_1; KinesisClient kinesisClient = KinesisClient.builder() .region(region) .build(); addShards(kinesisClient, name, goalShards); } public static void addShards(KinesisClient kinesisClient, String name , int goalShards) { try { UpdateShardCountRequest request = UpdateShardCountRequest.builder() .scalingType("UNIFORM_SCALING") .streamName(name) .targetShardCount(goalShards) .build(); UpdateShardCountResponse response = kinesisClient.updateShardCount(request); System.out.println(response.streamName() + " has updated shard count to " + response.currentShardCount()); } catch (KinesisException e) { System.err.println(e.getMessage()); System.exit(1); } System.out.println("Done"); } }

Sample Details

Service: kinesis

Last tested: 3/26/2020

Author: scmacdon AWS

Type: full-example