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AWS SDK for Java version 2.0 - Portland Oregon
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sullis
August 28, 2018
Technology
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AWS SDK for Java version 2.0 - Portland Oregon
Portland Java User Group
Portland Oregon
August 28, 2018
sullis
August 28, 2018
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Transcript
Sean Sullivan August 28, 2018 Portland Java User Group AWS
SDK for Java version 2.0
software engineer 22 years on the JVM Portland Oregon back
office systems Hudson’s Bay Company About me
Agenda Hudson’s Bay Company SDK for Java • version 1.x
• version 2.x Scala and AWS
https://en.wikipedia.org/wiki/Hudson%27s_Bay_Company
Toronto NYC
saksfifthavenue.com saksoff5th.com lordandtaylor.com thebay.com
saksfifthavenue.com
walmart.com
HBC Tech stack
Web Checkout Android Checkout iPhone Checkout Checkout service
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
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 Developer Preview
Pull Request
$ cd aws-sdk-java-v2 $ git log | grep 'Author: Sean
Sullivan' | wc -l 39
SDK v2 Maven artifacts
https://search.maven.org/
<dependency> <groupId>com.amazonaws<groupId> <artifactId>aws-java-sdk-dynamodb</artifactId> <version>1.11.397</version> </dependency> Maven dependencies SDK v1 <dependency>
<groupId>software.amazon.awssdk<groupId> <artifactId>dynamodb</artifactId> <version>2.0.1</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
AWS SDK v2 in a Scala application?
val awsSdkVersion = “2.0.1" "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._ Foo.scala
FutureConverters?
java.util.concurrent.CompletableFuture scala.concurrent.Future
FutureConverters.scala
gfc-aws-cloudwatch
“A tiny Scala wrapper around AWS CloudWatch Java client” gfc-aws-cloudwatch
https://github.com/gilt/gfc-aws-cloudwatch
how to migrate gfc-aws-cloudwatch from SDK v1 to SDK v2
?
https://github.com/ gilt/gfc-aws- cloudwatch/pull/8/ files
Conclusion SDK v1 — production ready SDK v2 — coming
soon github.com/aws twitter.com/awsforjava
The end
None
Bonus material
“Developing Applications on AWS in the JVM” AWS re:Invent 2017
https://www.slideshare.net/AmazonWebServices/ dev205developing-applications-on-aws-in-the-jvm