AWS for Java Developers in 2019 - AWS Summit Sydney

1. S U M M I T SYDNEY

26. S U M M I T © 2019, Amazon Web Services, Inc. or its affiliates. All rights reserved. “Amazon has a long and deep history with Java. I’m thrilled to see the work of our internal mission-critical Java team being made available to the rest of the world.” James Gosling Distinguished Engineer, Amazon Web Services

27. © 2019, Amazon Web Services, Inc. or its affiliates. All rights reserved.S U M M I T Amazon Corretto Amazon supported distribution of OpenJDK Run internally on thousand of production services Multiplatform Amazon Linux 2, Windows, MacOS, Ubuntu, RHEL, CentOS, SUSE, Docker No cost Distributed under open source license Long term support Corretto 8 until Jun 2023 Corretto 11 until (at least) Aug 2024 All patches and enhancements up streamed to OpenJDK Open source https://github.com/corretto https://aws.amazon.com/corretto

31. © 2019, Amazon Web Services, Inc. or its affiliates. All rights reserved.S U M M I T AWS Toolkit for IntelliJ and AWS Toolkit for PyCharm Make it easier to develop on AWS Open source https://aws.amazon.com/intellij Initial focus AWS Lambda AWS SAM CLI integration Local debugging Serverless application support Basic resource / credentials management

34. © 2019, Amazon Web Services, Inc. or its affiliates. All rights reserved.S U M M I T SnsAsyncClient.builder() .region(Region.US_WEST_2) .credentialsProvider(ProfileCredentialsProvider.create()) .build(); SnsAsyncClient.builder() .region(Region.US_WEST_2) .overideConfiguration( ClientOverrideConfiguration.builder() .apiCallTimeout(Duration.ofSeconds(5) .build()) .build(); SnsAsyncClient.builder() .region(Region.US_WEST_2) .overideConfiguration(o -> o.apiCallTimeout(Duration.ofSeconds(5))) .build(); AWS SDK for Java 2.0 Core tenets Non-blocking asynchronous service clients Immutability through builder pattern Pluggable HTTP clients Consumer builder pattern SnsAsyncClient.create()SnsAsyncClient.builder() .region(Region.US_WEST_2) .httpClient(UrlConnectionHttpClient.create()) .build();

35. © 2019, Amazon Web Services, Inc. or its affiliates. All rights reserved.S U M M I T AWS SDK for Java 2.0 Other callout features Modularised (as in Java 9 Modules – Project Jigsaw) Endpoint discovery DynamoDBClient.builder() .region(Region.US_WEST_2) .enableEndpointDiscovery() .build(); <service>.<region>.amazonaws.comdynamodb.ap-southeast-2.amazonaws.commyid2.dynamodb.ap-southeast-2.amazonaws.com myid1.dynamodb.ap-southeast-2.amazonaws.com myid3.dynamodb.ap-southeast-2.amazonaws.com

36. © 2019, Amazon Web Services, Inc. or its affiliates. All rights reserved.S U M M I T AWS SDK for Java 2.0 Other callout features Modularised (as in Java 9 Modules – Project Jigsaw) Endpoint discovery HTTP/2 event streaming Fully non blocking HTTP/2 clients Bi-directional real-time streaming responses Reactive streams support Asynchronous stream processing with non-blocking back pressure

40. © 2019, Amazon Web Services, Inc. or its affiliates. All rights reserved.S U M M I T The journey to AWS CDK “CloudFormation JSON / YAML as an intermediary format like bytecode on the JVM?” 2006 – Provision via API 2010 – Provision via AWS SDK for Java 2010 – Provision via CloudFormation 2018 – Provision via AWS CDK generated CloudFormation

42. S U M M I T © 2019, Amazon Web Services, Inc. or its affiliates. All rights reserved. AWS CDK example Queue queue = new Queue(this, "Queue", QueueProps.builder() .withVisibilityTimeoutSec(300) .build()); Topic topic = new Topic(this, "Topic", TopicProps.builder() .withDisplayName("Some Amazing Topic") .build()); topic.subscribeQueue(queue);

43. © 2019, Amazon Web Services, Inc. or its affiliates. All rights reserved.S U M M I T AWS CDK example { "Resources": { "Queue4A7E3555": { "Type": "AWS::SQS::Queue", "Properties": { "VisibilityTimeout": 300 } }, "QueuePolicy25439813": { "Type": "AWS::SQS::QueuePolicy", "Properties": { "PolicyDocument": { "Statement": [ { "Action": "sqs:SendMessage", "Condition": { "ArnEquals": { "aws:SourceArn": { "Ref": "TopicBFC7AF6E" } } }, "Effect": "Allow", "Principal": { "Service": "sns.amazonaws.com" }, "Resource": { "Fn::GetAtt": [ "Queue4A7E3555", "Arn" ] } } ], "Version": "2012-10-17" }, "Queues": [{ "Ref": "Queue4A7E3555" }] } }, "TopicBFC7AF6E": { "Type": "AWS::SNS::Topic", "Properties": { "DisplayName": "Some Amazing Topic" } }, "TopicQueueSubscription2D098ED4": { "Type": "AWS::SNS::Subscription", "Properties": { "Endpoint": { "Fn::GetAtt": [ "Queue4A7E3555", "Arn" ] }, "Protocol": "sqs", "TopicArn": { "Ref": "TopicBFC7AF6E" } } } } }

44. S U M M I T © 2019, Amazon Web Services, Inc. or its affiliates. All rights reserved. AWS CDK example Queue queue = new Queue(this, "Queue", QueueProps.builder() .withVisibilityTimeoutSec(300) .build()); Topic topic = new Topic(this, "Topic", TopicProps.builder() .withDisplayName("Some Amazing Topic") .build()); topic.subscribeQueue(queue);

45. © 2019, Amazon Web Services, Inc. or its affiliates. All rights reserved.S U M M I T AWS CDK example { "Resources": { "Queue4A7E3555": { "Type": "AWS::SQS::Queue", "Properties": { "VisibilityTimeout": 300 } }, "QueuePolicy25439813": { "Type": "AWS::SQS::QueuePolicy", "Properties": { "PolicyDocument": { "Statement": [ { "Action": "sqs:SendMessage", "Condition": { "ArnEquals": { "aws:SourceArn": { "Ref": "TopicBFC7AF6E" } } }, "Effect": "Allow", "Principal": { "Service": "sns.amazonaws.com" }, "Resource": { "Fn::GetAtt": [ "Queue4A7E3555", "Arn" ] } } ], "Version": "2012-10-17" }, "Queues": [{ "Ref": "Queue4A7E3555" }] } }, "TopicBFC7AF6E": { "Type": "AWS::SNS::Topic", "Properties": { "DisplayName": "Some Amazing Topic" } }, "TopicQueueSubscription2D098ED4": { "Type": "AWS::SNS::Subscription", "Properties": { "Endpoint": { "Fn::GetAtt": [ "Queue4A7E3555", "Arn" ] }, "Protocol": "sqs", "TopicArn": { "Ref": "TopicBFC7AF6E" } } } } }

46. © 2019, Amazon Web Services, Inc. or its affiliates. All rights reserved.S U M M I T AWS Cloud Development Kit (AWS CDK) Higher level abstractions Object oriented & extensible Native IDE support (it’s just code) Java, Javascript, Typescript, .NET Open Source https://github.com/awslabs/aws-cdk Currently in Developer Preview

55. © 2019, Amazon Web Services, Inc. or its affiliates. All rights reserved.S U M M I T A project wish list (devops) Pipeline as code Infrastructure as code Isolation Everything in the same language as my application Pipelines are highly available and performant

56. © 2019, Amazon Web Services, Inc. or its affiliates. All rights reserved.S U M M I T A project wish list (application build) (Serverless) Performance on par with a more long lived JVM workload All underpinned by a JVM that is dependable with free long term support Functional programming friendly SDK’s (Serverless) Great local development experience (debugging and IDE support)

58. © 2019, Amazon Web Services, Inc. or its affiliates. All rights reserved.S U M M I T Environment Architecture This is the simplistic view of what we would like A load balancer, some web servers and a database AWS Cloud

59. © 2019, Amazon Web Services, Inc. or its affiliates. All rights reserved.S U M M I T Environment Architecture Things are not quite so simple when it comes to deployment. AWS gives you a lot of control over the wider environment Can AWS CDK help keep things simple? AWS Cloud VPC Availability Zone 1 Availability Zone 2 Availability Zone 3 Auto Scaling group

60. © 2019, Amazon Web Services, Inc. or its affiliates. All rights reserved.S U M M I T Pipeline Architecture Source Stage Retrieve source from Github Build Stage Maven build (mvn package) Create petclinic.jar Run CDK to provision or update environment

61. © 2019, Amazon Web Services, Inc. or its affiliates. All rights reserved.S U M M I T Pipeline Architecture What do I mean by isolation? Devops Account Prod Account Non Prod Account PetClinic Pipeline PetClinic Staging PetClinic Prod

63. © 2019, Amazon Web Services, Inc. or its affiliates. All rights reserved.S U M M I T Content links Amazon Corretto https://aws.amazon.com/corretto/ AWS Toolkit for IntelliJ https://aws.amazon.com/intellij AWS Cloud Development Kit (AWS CDK) https://github.com/awslabs/aws-cdk AWS CDK demo + lab https://github.com/jousby/aws-java-appdev-lab https://github.com/jousby/aws-buildbox

64. © 2019, Amazon Web Services, Inc. or its affiliates. All rights reserved.S U M M I T Related breakouts Enhancing your Developer eXperience on AWS Derek Bingham Pro tips for builders on AWS Gabe Hollombe