AWS SDK for Java version 2.0 - Portland Oregon

Transcript

1. 1.

   Sean Sullivan August 28, 2018 Portland Java User Group AWS

   SDK for Java version 2.0
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   software engineer 22 years on the JVM Portland Oregon back

   office systems Hudson’s Bay Company About me
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   Agenda Hudson’s Bay Company SDK for Java • version 1.x

   • version 2.x Scala and AWS
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   https://en.wikipedia.org/wiki/Hudson%27s_Bay_Company

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   Toronto NYC

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

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   saksfifthavenue.com

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   walmart.com

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   HBC Tech stack

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    Web Checkout Android Checkout iPhone Checkout Checkout service

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    AWS SDK for Java

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    SDK v2 announced June 2017 @awsforjava

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    “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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    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
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    Github projects aws-sdk-java aws-sdk-java-v2

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    SDK v2 Developer Preview

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    Pull Request

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

    Sullivan' | wc -l 39
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    SDK v2 Maven artifacts

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    https://search.maven.org/

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    <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
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    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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    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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    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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    AWS SDK v2 in a Scala application?

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

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    FutureConverters?

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

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    FutureConverters.scala

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    gfc-aws-cloudwatch

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

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

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

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

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    Conclusion SDK v1 — production ready SDK v2 — coming

    soon github.com/aws twitter.com/awsforjava
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    The end

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    None
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    Bonus material

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

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