AWS SDK for Java version 2.0 - Portland Oregon

Portland Java User Group
Portland Oregon
August 28, 2018

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
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