Upgrade to Pro
— share decks privately, control downloads, hide ads and more …
Speaker Deck
Features
Speaker Deck
PRO
Sign in
Sign up for free
Search
Search
AWS SDK for Java version 2 - NYJavaSIG 2019-11-21
Search
sullis
November 21, 2019
Programming
0
120
AWS SDK for Java version 2 - NYJavaSIG 2019-11-21
AWS SDK for Java version 2.x
NY JavaSIG
November 21, 2019
#nyjavasig
#awscloud
#awssdk
#java
sullis
November 21, 2019
Tweet
Share
More Decks by sullis
See All by sullis
Dependency management for Java applications 2025-09-11
sullis
0
8
S3 NYC Iceberg meetup 2025-07-10
sullis
0
41
Amazon S3 Chicago 2025-06-04
sullis
0
100
Amazon S3 Boston 2025-05-07
sullis
0
55
Netty ConFoo Montreal 2025-02-27
sullis
0
100
GitHub Actions ConFoo Montreal 2025-02-26
sullis
0
63
Netty Portland Java User Group 2025-02-18
sullis
0
12
Amazon S3 NYJavaSIG 2024-12-12
sullis
0
190
Amazon S3 - Portland Java User Group 2024-09-17
sullis
0
110
Other Decks in Programming
See All in Programming
為你自己學 Python - 冷知識篇
eddie
1
350
rage against annotate_predecessor
junk0612
0
170
Navigating Dependency Injection with Metro
zacsweers
3
2.5k
ユーザーも開発者も悩ませない TV アプリ開発 ~Compose の内部実装から学ぶフォーカス制御~
taked137
0
190
そのAPI、誰のため? Androidライブラリ設計における利用者目線の実践テクニック
mkeeda
2
1.8k
奥深くて厄介な「改行」と仲良くなる20分
oguemon
1
560
Deep Dive into Kotlin Flow
jmatsu
1
360
Oracle Database Technology Night 92 Database Connection control FAN-AC
oracle4engineer
PRO
1
460
今だからこそ入門する Server-Sent Events (SSE)
nearme_tech
PRO
3
240
機能追加とリーダー業務の類似性
rinchoku
2
1.3k
AIと私たちの学習の変化を考える - Claude Codeの学習モードを例に
azukiazusa1
10
4.3k
The Past, Present, and Future of Enterprise Java with ASF in the Middle
ivargrimstad
0
160
Featured
See All Featured
The Myth of the Modular Monolith - Day 2 Keynote - Rails World 2024
eileencodes
26
3k
Build The Right Thing And Hit Your Dates
maggiecrowley
37
2.9k
CSS Pre-Processors: Stylus, Less & Sass
bermonpainter
358
30k
Exploring the Power of Turbo Streams & Action Cable | RailsConf2023
kevinliebholz
34
6k
The Cost Of JavaScript in 2023
addyosmani
53
8.9k
Design and Strategy: How to Deal with People Who Don’t "Get" Design
morganepeng
131
19k
Understanding Cognitive Biases in Performance Measurement
bluesmoon
29
1.9k
It's Worth the Effort
3n
187
28k
KATA
mclloyd
32
14k
Faster Mobile Websites
deanohume
309
31k
"I'm Feeling Lucky" - Building Great Search Experiences for Today's Users (#IAC19)
danielanewman
229
22k
Code Review Best Practice
trishagee
71
19k
Transcript
Sean Sullivan November 21, 2019 NY JavaSIG AWS SDK for
Java version 2.x
software engineer Portland Oregon Java Scala About me
Agenda SDK for Java 2.x SDK internals Migrating from v1
to v2 Scala and SDK v2
AWS SDK for Java
SDK v2 announced June 2017 @awsforjava
“Under the hood, we use an HTTP client built on
top of Netty to make the non- blocking HTTP call” “first class support for non-blocking I/O in our async clients” source: AWS Developer Blog
“The AWS SDK for Java 2.0 asynchronous client methods return
CompletableFuture objects” source: SDK v2 Developer Guide
import java.util.concurrent.CompletableFuture; DynamoDBAsyncClient client = DynamoDBAsyncClient.builder() .region(Region.US_WEST_2) .build(); CompletableFuture<ListTablesResponse> response
= client.listTables(ListTablesRequest.builder().build()); CompletableFuture<List<String>> tableNames = response.thenApply(ListTablesResponse::tableNames); tableNames.whenComplete((tables, err) -> { if (tables != null) { tables.forEach(System.out::println); } else { err.printStackTrace(); } }); SDK v2
Github projects aws-sdk-java aws-sdk-java-v2
SDK v2
Pull Request
SDK v2 Maven artifacts
https://search.maven.org/
<dependency> <groupId>com.amazonaws<groupId> <artifactId>aws-java-sdk-dynamodb</artifactId> <version>1.11.679</version> </dependency> Maven dependencies SDK v1 <dependency>
<groupId>software.amazon.awssdk<groupId> <artifactId>dynamodb</artifactId> <version>2.10.20</version> </dependency> SDK v2
import com.amazonaws.services.cloudwatch.AmazonCloudWatchClient; import com.amazonaws.services.cloudwatch.AmazonCloudWatchClientBuilder; import com.amazonaws.services.cloudwatch.model.MetricDatum; import com.amazonaws.services.cloudwatch.model.PutMetricDataRequest; Java packages
SDK v1 import software.amazon.awssdk.services.cloudwatch.CloudWatchAsyncClient; import software.amazon.awssdk.services.cloudwatch.model.MetricDatum; import software.amazon.awssdk.services.cloudwatch.model.PutMetricDataRequest; SDK v2
distinct Maven artifact names distinct Java package names SDK v2
and SDK v1 can co-exist in a Java application SDK v1 jar SDK v2 jar
SDK v2 programming API • Immutable clients and models •
Enhanced pagination • Smart configuration merging • Forward-compatible enums • Streaming operations as first-class concepts
SDK internals
<slf4j.version>1.7.28</slf4j.version> <jackson.version>2.10.0</jackson.version> <netty.version>4.1.42.Final</netty.version> Transitive dependencies
“To provide SDK support for the many services that AWS
owns, the AWS SDKs make extensive use of code generation” Code generation https://aws.amazon.com/blogs/developer/aws-sdk-for-java-2-x-released/
Why code generation?
less boilerplate more consistency Why code generation?
class names parameter names method names exception names Consistency error
handling logging JSON serialization network I/O
AWS SDK for Java v2
JavaPoet AWS SDK for Java v2
Migrating code from v1 to v2
aws-secretsmanager-caching-java
https://github.com/aws/aws-secretsmanager-caching-java/
“AWS Secrets Manager Java caching client enables in-process caching of
secrets for Java applications” aws-secretsmanager-caching-java
aws-secretsmanager-caching-java is based on AWS SDK v1
https://github.com/aws/aws-secretsmanager-caching-java/issues/
how to migrate aws-secretsmanager- caching-java from SDK v1 to SDK
v2 ?
https://github.com/ aws/aws- secretsmanager- caching-java/pull/6
https://github.com/aws/aws-secretsmanager-caching-java/pull/6/files
https://github.com/aws/aws-secretsmanager-caching-java/pull/6/files
Scala and AWS SDK v2
val awsSdkVersion = “2.10.20” "org.scala-lang.modules" %% "scala-java8-compat" % “0.9.0", "software.amazon.awssdk"
% "cloudwatch" % awsSdkVersion, "software.amazon.awssdk" % "dynamodb" % awsSdkVersion build.sbt
import scala.compat.java8.FutureConverters._ import scala.collection.JavaConverters._
FutureConverters?
java.util.concurrent.CompletableFuture scala.concurrent.Future
FutureConverters.scala
migrating a Scala library from AWS SDK v1 to v2
“A tiny Scala wrapper around AWS CloudWatch Java client” gfc-aws-cloudwatch
https://github.com/gilt/gfc-aws-cloudwatch
https://github.com/ gilt/gfc-aws- cloudwatch/pull/8/ files
None
None
Conclusion SDK v1 — production ready SDK v2 — production
ready github.com/aws twitter.com/awsforjava
The end
None
Bonus material
“Hands-on in the AWS Java Ecosystem” AWS re:Invent 2018
“Developing Applications on AWS in the JVM” AWS re:Invent 2017
https://www.slideshare.net/AmazonWebServices/ dev205developing-applications-on-aws-in-the-jvm