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
   

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2. software engineer
   22 years on the JVM
   Portland Oregon
   back office systems
   Hudson’s Bay Company
   About me
   

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3. Agenda
   Hudson’s Bay Company
   SDK for Java
   • version 1.x
   • version 2.x
   Scala and AWS
   

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

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5. Toronto
   NYC
   

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

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7. saksfifthavenue.com
   

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8. walmart.com
   

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9. HBC Tech stack
   

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10. Web
    Checkout
    Android
    Checkout
    iPhone
    Checkout
    Checkout
    service
    

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11. AWS SDK for Java
    

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12. SDK v2
    announced
    June 2017
    @awsforjava
    

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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
    

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14. import java.util.concurrent.CompletableFuture;
    DynamoDBAsyncClient client = DynamoDBAsyncClient.builder()
    .region(Region.US_WEST_2)
    .build();
    CompletableFuture response =
    client.listTables(ListTablesRequest.builder().build());
    CompletableFuture> tableNames =
    response.thenApply(ListTablesResponse::tableNames);
    tableNames.whenComplete((tables, err) -> {
    if (tables != null) {
    tables.forEach(System.out::println);
    } else {
    err.printStackTrace();
    }
    });
    SDK v2
    

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

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16. SDK v2
    Developer Preview
    

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17. Pull Request
    

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18. $ cd aws-sdk-java-v2
    $ git log | grep 'Author: Sean Sullivan' | wc -l
    39
    

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19. SDK v2
    Maven artifacts
    

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

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21. 
    com.amazonaws
    aws-java-sdk-dynamodb
    1.11.397
    
    Maven dependencies
    SDK v1
    
    software.amazon.awssdk
    dynamodb
    2.0.1
    
    SDK v2
    

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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
    

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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
    

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24. SDK v2 programming API
    • Immutable clients and models
    • Enhanced pagination
    • Smart configuration merging
    • Forward-compatible enums
    • Streaming operations as first-class
    concepts
    

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25. AWS SDK v2
    in a Scala
    application?
    

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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
    

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

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28. FutureConverters?
    

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

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30. FutureConverters.scala
    

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31. gfc-aws-cloudwatch
    

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

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

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

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

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36. Conclusion
    SDK v1 — production ready
    SDK v2 — coming soon
    github.com/aws
    twitter.com/awsforjava
    

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37. The end
    

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39. Bonus material
    

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

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

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