AWS SDK for Java version 2.0 - DAWSCON 2019

DAWSCON 2019
Dawson College
Montreal Canada
January 11, 2019

Transcript

1. Sean Sullivan January 11, 2019 DAWSCON AWS SDK for Java version 2.0
2. software engineer 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 Migrating code from V1 to V2
4. Toronto NYC
6. saksfifthavenue.com saksoff5th.com lordandtaylor.com thebay.com
7. thebay.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. “The AWS SDK for Java 2.0 asynchronous client methods return CompletableFuture objects” source: SDK V2 Developer Guide
15. 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
16. Github projects aws-sdk-java aws-sdk-java-v2
17. SDK v2
18. Pull Request
19. SDK v2 Maven artifacts
20. https://search.maven.org/
21. <dependency> <groupId>com.amazonaws<groupId> <artifactId>aws-java-sdk-dynamodb</artifactId> <version>1.11.481</version> </dependency> Maven dependencies SDK v1 <dependency> <groupId>software.amazon.awssdk<groupId> <artifactId>dynamodb</artifactId> <version>2.3.0</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 = “2.3.0” "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. Migrating code from V1 to V2
32. gfc-aws-cloudwatch
33. “A tiny Scala wrapper around AWS CloudWatch Java client” gfc-aws-cloudwatch
34. https://github.com/gilt/gfc-aws-cloudwatch
35. how to migrate gfc-aws-cloudwatch from SDK v1 to SDK v2 ?
36. https://github.com/ gilt/gfc-aws- cloudwatch/pull/8/ files
37. aws-secretsmanager-caching-java
38. “AWS Secrets Manager Java caching client enables in-process caching of secrets for Java applications” aws-secretsmanager-caching-java
39. https://github.com/aws/aws-secretsmanager-caching-java/
40. https://github.com/aws/aws-secretsmanager-caching-java/issues/5
41. how to migrate aws-secretsmanager- caching-java from SDK v1 to SDK v2 ?
42. https://github.com/ aws/aws- secretsmanager- caching-java/pull/6
43. https://github.com/aws/aws-secretsmanager-caching-java/pull/6/files
44. https://github.com/aws/aws-secretsmanager-caching-java/pull/6/files
45. Conclusion SDK v1 — production ready SDK v2 — production ready github.com/aws twitter.com/awsforjava
46. The end
48. Bonus material
49. “Hands-on in the AWS Java Ecosystem” AWS re:Invent 2018
50. “Developing Applications on AWS in the JVM” AWS re:Invent 2017
51. https://www.slideshare.net/AmazonWebServices/ dev205developing-applications-on-aws-in-the-jvm