AWS SDK for Java version 2.0 - Portland Oregon

Transcript

1. Sean Sullivan August 28, 2018 Portland Java User Group AWS

   SDK for Java version 2.0

2. software engineer 22 years on the JVM Portland Oregon back

   office systems Hudson’s Bay Company About me

3. Agenda Hudson’s Bay Company SDK for Java • version 1.x

   • version 2.x Scala and AWS

4. https://en.wikipedia.org/wiki/Hudson%27s_Bay_Company

5. Toronto NYC

6. saksfifthavenue.com saksoff5th.com lordandtaylor.com thebay.com

7. saksfifthavenue.com

8. walmart.com

9. HBC Tech stack

10. Web Checkout Android Checkout iPhone Checkout Checkout service

11. AWS SDK for Java

12. SDK v2 announced June 2017 @awsforjava

13. “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

14. 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

15. Github projects aws-sdk-java aws-sdk-java-v2

16. SDK v2 Developer Preview

17. Pull Request

18. $ cd aws-sdk-java-v2 $ git log | grep 'Author: Sean

    Sullivan' | wc -l 39

19. SDK v2 Maven artifacts

20. https://search.maven.org/

21. <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

22. 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

23. 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

24. SDK v2 programming API • Immutable clients and models •

    Enhanced pagination • Smart configuration merging • Forward-compatible enums • Streaming operations as first-class concepts

25. AWS SDK v2 in a Scala application?

26. 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

27. import scala.compat.java8.FutureConverters._ import scala.collection.JavaConverters._ Foo.scala

28. FutureConverters?

29. java.util.concurrent.CompletableFuture scala.concurrent.Future

30. FutureConverters.scala

31. gfc-aws-cloudwatch

32. “A tiny Scala wrapper around AWS CloudWatch Java client” gfc-aws-cloudwatch

33. https://github.com/gilt/gfc-aws-cloudwatch

34. how to migrate gfc-aws-cloudwatch from SDK v1 to SDK v2

    ?

35. https://github.com/ gilt/gfc-aws- cloudwatch/pull/8/ files

36. Conclusion SDK v1 — production ready SDK v2 — coming

    soon github.com/aws twitter.com/awsforjava

37. The end

38. None

39. Bonus material

40. “Developing Applications on AWS in the JVM” AWS re:Invent 2017

41. https://www.slideshare.net/AmazonWebServices/ dev205developing-applications-on-aws-in-the-jvm