AWS Step Functionsをローカルで試す（AWS Step Functions Localを動かしてみる）

これは、なにをしたくて書いたもの？

ちょっとAWS Step Functionsを調べてみようと思いまして。

ローカルで動かせる仕組みもあるみたいなので、こちらで試してみたいと思います。

AWS Step Functions

AWS Step Functionsのドキュメントはこちら。

Step Functions とは - AWS Step Functions

AWS Step Functionsはステートマシンと呼ばれるワークフローを使って、アプリケーションを構築するサービスです。
ワークフローには標準ワークフローとExpressワークフローがあります。

Step Functions とは / Standard ワークフロータイプと Express ワークフロータイプ

ワークフローの各ステップはステート（状態）と呼ばれます。

Step Functions で使用するワークフローの状態の検出 - AWS Step Functions

ステートにはいくつか種類があり、たとえばタスクステートはAWS LambdaやAWSのサービスを呼び出すことができます。

タスクワークフローの状態 - AWS Step Functions

ステートマシンについてはこちら。

Step Functions のステートマシンについて説明します。 - AWS Step Functions

主要なコンセプトとしては、以下のようです。

• ワークフロー … ビジネスプロセスを反映する一連のステップ
• ステート … ステートマシン内の個々のステップ。入力にもとづいて決定を行い、アクションを実行して出力を他のステートに渡すことができる
• Workflow Studio … ワークフローのプロトタイプ作成を行えるデザイナー
• ステートマシン … ワークフロー内の個々のステートまたはステップを表すJSONテキストとフィールドを用いて定義されたワークフロー
• Amazon States Language … ステートマシンを定義するために使用されるJSONベースの構造化言語。略してASL
• 入力および出力の設定 … ワークフロー内のステートはJSON、データを入力として受け取り、通常はJSONデータを出力として次のステートに渡す。ステート間のデータフローを制御するフィルターも利用可能
• サービスインテグレーション … ワークフローからAWSのサービスAPIのアクションを呼び出す
• サービスインテグレーションタイプ … AWSサービスを呼び出す時のパターンで、リクエスト - レスポンス（デフォルト）、ジョブの実行（.sync）、タスクトークン（.waitForTaskToken）を使用したコールバックを待つ、の3種類がある
• 実行 … ステートマシンの実行は、ワークローを実行してタスクを実施するインスタンスのこと

Step Functions のステートマシンについて説明します。 / 主要なコンセプト

AWS Step Functionsのユースケースとしては、データ処理、機械学習、マイクロサービスなどのオーケストレーション、ITオートメーション
などが挙げられるようです。

Step Functions ワークフローのユースケースを確認する - AWS Step Functions

他にも、ASLについての説明やワークフローの開発方法、

Amazon States Language を使用した Step Functions ワークフローの定義 - AWS Step Functions

Step Functions を使用したワークフローの開発 - AWS Step Functions

チュートリアルやステートマシンの起動方法などがあるのですが。

Step Functions の使用を開始する方法について説明します。 - AWS Step Functions

Step Functions でステートマシンの実行を開始する - AWS Step Functions

まずは雰囲気を掴むために、ローカルで動かせるバージョンで試してみましょう。

Step Functions でステートマシンをローカルでテストする - AWS Step Functions

AWS Step Functions Local

AWS Step Functions Localは、AWS Step Functionsを使ったアプリケーションの開発やテストをローカルで行えるツールです。

Step Functions でステートマシンをローカルでテストする - AWS Step Functions

AWS Lambda関数を呼び出すことや、他のサポートされているAWSサービスを呼び出すこともできます。

サービスと Step Functions の統合 - AWS Step Functions

AWS Step Functions Localでは、以下のいずれかの方法でAWSサービスとのインテグレーションができます。

• AWS Lambdaやその他のサービスのローカルエンドポイントを設定する
• AWS Step Functions LocalからAWSサービスを直接呼び出す
• サービスインテグレーションのレスポンスをモックする

提供形態としては、DockerイメージとJava（JARファイル）の2種類があります。

Docker での Step Functions Local (ダウンロード可能バージョン) のセットアップ - AWS Step Functions

Step Functions Local (ダウンロード可能バージョン) - Java バージョンのセットアップ - AWS Step Functions

今回はJARファイル版を使ってみたいと思います。

環境

今回の環境はこちら。

$ java --version
openjdk 21.0.4 2024-07-16
OpenJDK Runtime Environment (build 21.0.4+7-Ubuntu-1ubuntu222.04)
OpenJDK 64-Bit Server VM (build 21.0.4+7-Ubuntu-1ubuntu222.04, mixed mode, sharing)


$ aws --version
aws-cli/2.19.4 Python/3.12.6 Linux/5.15.0-125-generic exe/x86_64.ubuntu.22

AWS CLI用のクレデンシャルは以下で設定。

$ export AWS_ACCESS_KEY_ID=test
$ export AWS_SECRET_ACCESS_KEY=test
$ export AWS_DEFAULT_REGION=us-east-1

AWS Step Functions Localをインストールする

まずはAWS Step Functions LocalのJARファイル版をダウンロードしてみます。

Step Functions Local (ダウンロード可能バージョン) - Java バージョンのセットアップ - AWS Step Functions

$ curl -LO https://s3.amazonaws.com/stepfunctionslocal/StepFunctionsLocal.tar.gz

ダウンロードするのにえらく時間がかかるなと思ったら、500MB以上ありました…。

$ ll -h StepFunctionsLocal.tar.gz
-rw-rw-r-- 1 xxxxx xxxxx 554M 11月  9 15:49 StepFunctionsLocal.tar.gz

展開。

$ tar xf StepFunctionsLocal.tar.gz

ものすごく大量のJARファイルが入っています…。

$ tree
.
├── AWSAthenaJavaClient-1.12.x.jar
├── AWSBatchJavaClient-1.12.x.jar
├── AWSCloudcastJavaClient-1.12.x.jar
├── AWSDynamoDBJavaModel-1.12.x.jar
├── AWSECSJavaClient-1.12.x.jar
├── AWSEKSJavaClient-1.12.x.jar
├── AWSEMRContainersJavaClient-1.12.x.jar
├── AWSEventBridgeJavaClient-1.12.x.jar
├── AWSGlueDataBrewJavaClient-1.12.x.jar
├── AWSGlueJavaClient-1.12.x.jar
├── AWSJavaClientCore-1.12.x.jar
├── AWSJavaClientJmxSPI-1.12.x.jar
├── AWSJavaClientRuntime-1.12.x.jar
├── AWSJavaClientRuntimeConfigOverride-1.12.x.jar
├── AWSJavaClientSigners-1.12.x.jar
├── AWSJavaCredentialInterfaces-1.12.x.jar
├── AWSKeyManagementJavaClient-1.12.x.jar
├── AWSLambdaJavaClient-1.12.x.jar
├── AWSS3JavaClient-1.12.x.jar
├── AWSSQSJavaClient-1.12.x.jar
├── AWSSageMakerJavaClient-1.12.x.jar
├── AWSStepFunctionsJavaClient-1.12.x.jar
├── Apache-HttpComponents-HttpClient-4.5.x.jar
├── Apache-HttpComponents-HttpCore-4.4.x.jar
├── Aws-crt-java-1.0.x.jar
├── AwsFlowJava-1.0.jar
├── AwsJavaSdk-AccessAnalyzer-2.0.jar
├── AwsJavaSdk-Account-2.0.jar
├── AwsJavaSdk-Acm-2.0.jar
├── AwsJavaSdk-AcmPca-2.0.jar
├── AwsJavaSdk-AlexaForBusiness-2.0.jar
├── AwsJavaSdk-Amp-2.0.jar
├── AwsJavaSdk-Amplify-2.0.jar
├── AwsJavaSdk-AmplifyBackend-2.0.jar
├── AwsJavaSdk-AmplifyUiBuilder-2.0.jar
├── AwsJavaSdk-ApiGateway-2.0.jar
├── AwsJavaSdk-ApiGatewayManagementApi-2.0.jar
├── AwsJavaSdk-ApiGatewayV2-2.0.jar
├── AwsJavaSdk-AppConfig-2.0.jar
├── AwsJavaSdk-AppConfigData-2.0.jar
├── AwsJavaSdk-AppFabric-2.0.jar
├── AwsJavaSdk-AppIntegrations-2.0.jar
├── AwsJavaSdk-AppMesh-2.0.jar
├── AwsJavaSdk-AppRunner-2.0.jar
├── AwsJavaSdk-AppStream-2.0.jar
├── AwsJavaSdk-AppSync-2.0.jar
├── AwsJavaSdk-Appflow-2.0.jar
├── AwsJavaSdk-ApplicationAutoScaling-2.0.jar
├── AwsJavaSdk-ApplicationCostProfiler-2.0.jar
├── AwsJavaSdk-ApplicationDiscoveryService-2.0.jar
├── AwsJavaSdk-ApplicationInsights-2.0.jar
├── AwsJavaSdk-ArcZonalShift-2.0.jar
├── AwsJavaSdk-Artifact-2.0.jar
├── AwsJavaSdk-Athena-2.0.jar
├── AwsJavaSdk-AuditManager-2.0.jar
├── AwsJavaSdk-AutoScaling-2.0.jar
├── AwsJavaSdk-AutoScalingPlans-2.0.jar
├── AwsJavaSdk-B2Bi-2.0.jar
├── AwsJavaSdk-Backup-2.0.jar
├── AwsJavaSdk-BackupGateway-2.0.jar
├── AwsJavaSdk-BackupStorage-2.0.jar
├── AwsJavaSdk-Batch-2.0.jar
├── AwsJavaSdk-BcmDataExports-2.0.jar
├── AwsJavaSdk-Bedrock-2.0.jar
├── AwsJavaSdk-BedrockAgent-2.0.jar
├── AwsJavaSdk-BedrockAgentRuntime-2.0.jar
├── AwsJavaSdk-BedrockRuntime-2.0.jar
├── AwsJavaSdk-Billingconductor-2.0.jar
├── AwsJavaSdk-Braket-2.0.jar
├── AwsJavaSdk-Budgets-2.0.jar
├── AwsJavaSdk-Chime-2.0.jar
├── AwsJavaSdk-ChimeSdkIdentity-2.0.jar
├── AwsJavaSdk-ChimeSdkMediaPipelines-2.0.jar
├── AwsJavaSdk-ChimeSdkMeetings-2.0.jar
├── AwsJavaSdk-ChimeSdkMessaging-2.0.jar
├── AwsJavaSdk-ChimeSdkVoice-2.0.jar
├── AwsJavaSdk-CleanRooms-2.0.jar
├── AwsJavaSdk-CleanRoomsMl-2.0.jar
├── AwsJavaSdk-Cloud9-2.0.jar
├── AwsJavaSdk-CloudControl-2.0.jar
├── AwsJavaSdk-CloudDirectory-2.0.jar
├── AwsJavaSdk-CloudFormation-2.0.jar
├── AwsJavaSdk-CloudFront-2.0.jar
├── AwsJavaSdk-CloudFrontKeyValueStore-2.0.jar
├── AwsJavaSdk-CloudHsm-2.0.jar
├── AwsJavaSdk-CloudHsmV2-2.0.jar
├── AwsJavaSdk-CloudSearch-2.0.jar
├── AwsJavaSdk-CloudSearchDomain-2.0.jar
├── AwsJavaSdk-CloudTrail-2.0.jar
├── AwsJavaSdk-CloudTrailData-2.0.jar
├── AwsJavaSdk-CloudWatch-2.0.jar
├── AwsJavaSdk-CloudWatchEvents-2.0.jar
├── AwsJavaSdk-CloudWatchLogs-2.0.jar
├── AwsJavaSdk-CodeBuild-2.0.jar
├── AwsJavaSdk-CodeCatalyst-2.0.jar
├── AwsJavaSdk-CodeCommit-2.0.jar
├── AwsJavaSdk-CodeDeploy-2.0.jar
├── AwsJavaSdk-CodeGuruProfiler-2.0.jar
├── AwsJavaSdk-CodeGuruReviewer-2.0.jar
├── AwsJavaSdk-CodeGuruSecurity-2.0.jar
├── AwsJavaSdk-CodePipeline-2.0.jar
├── AwsJavaSdk-CodeStar-2.0.jar
├── AwsJavaSdk-CodeStarConnections-2.0.jar
├── AwsJavaSdk-Codeartifact-2.0.jar
├── AwsJavaSdk-Codegen-2.0.jar
├── AwsJavaSdk-Codegen-BuildTools-2.0.jar
├── AwsJavaSdk-Codegen-EclipseJdtDependencies-2.0.jar
├── AwsJavaSdk-CodestarNotifications-2.0.jar
├── AwsJavaSdk-CognitoIdentity-2.0.jar
├── AwsJavaSdk-CognitoIdentityProvider-2.0.jar
├── AwsJavaSdk-CognitoSync-2.0.jar
├── AwsJavaSdk-Comprehend-2.0.jar
├── AwsJavaSdk-ComprehendMedical-2.0.jar
├── AwsJavaSdk-ComputeOptimizer-2.0.jar
├── AwsJavaSdk-ConfigService-2.0.jar
├── AwsJavaSdk-Connect-2.0.jar
├── AwsJavaSdk-ConnectCampaigns-2.0.jar
├── AwsJavaSdk-ConnectCases-2.0.jar
├── AwsJavaSdk-ConnectContactLens-2.0.jar
├── AwsJavaSdk-ConnectParticipant-2.0.jar
├── AwsJavaSdk-ControlTower-2.0.jar
├── AwsJavaSdk-Core-2.0.jar
├── AwsJavaSdk-Core-Annotations-2.0.jar
├── AwsJavaSdk-Core-Arns-2.0.jar
├── AwsJavaSdk-Core-Auth-2.0.jar
├── AwsJavaSdk-Core-AuthCrt-2.0.jar
├── AwsJavaSdk-Core-AwsCborProtocol-2.0.jar
├── AwsJavaSdk-Core-AwsCore-2.0.jar
├── AwsJavaSdk-Core-AwsJsonProtocol-2.0.jar
├── AwsJavaSdk-Core-AwsQueryProtocol-2.0.jar
├── AwsJavaSdk-Core-AwsXmlProtocol-2.0.jar
├── AwsJavaSdk-Core-Checksums-2.0.jar
├── AwsJavaSdk-Core-ChecksumsSpi-2.0.jar
├── AwsJavaSdk-Core-CrtCore-2.0.jar
├── AwsJavaSdk-Core-EndpointsSpi-2.0.jar
├── AwsJavaSdk-Core-HttpAuth-2.0.jar
├── AwsJavaSdk-Core-HttpAuthAws-2.0.jar
├── AwsJavaSdk-Core-HttpAuthAwsCrt-2.0.jar
├── AwsJavaSdk-Core-HttpAuthAwsEventStream-2.0.jar
├── AwsJavaSdk-Core-HttpAuthSpi-2.0.jar
├── AwsJavaSdk-Core-IdentitySpi-2.0.jar
├── AwsJavaSdk-Core-JsonUtils-2.0.jar
├── AwsJavaSdk-Core-MetricsSpi-2.0.jar
├── AwsJavaSdk-Core-Profiles-2.0.jar
├── AwsJavaSdk-Core-ProtocolCore-2.0.jar
├── AwsJavaSdk-Core-Regions-2.0.jar
├── AwsJavaSdk-Core-Utils-2.0.jar
├── AwsJavaSdk-CostAndUsageReportService-2.0.jar
├── AwsJavaSdk-CostExplorer-2.0.jar
├── AwsJavaSdk-CostOptimizationHub-2.0.jar
├── AwsJavaSdk-CustomerProfiles-2.0.jar
├── AwsJavaSdk-DataBrew-2.0.jar
├── AwsJavaSdk-DataExchange-2.0.jar
├── AwsJavaSdk-DataPipeline-2.0.jar
├── AwsJavaSdk-DataSync-2.0.jar
├── AwsJavaSdk-DataZone-2.0.jar
├── AwsJavaSdk-DatabaseMigrationService-2.0.jar
├── AwsJavaSdk-Dax-2.0.jar
├── AwsJavaSdk-Detective-2.0.jar
├── AwsJavaSdk-DevOpsGuru-2.0.jar
├── AwsJavaSdk-DeviceFarm-2.0.jar
├── AwsJavaSdk-DirectConnect-2.0.jar
├── AwsJavaSdk-DirectoryService-2.0.jar
├── AwsJavaSdk-Dlm-2.0.jar
├── AwsJavaSdk-DocDb-2.0.jar
├── AwsJavaSdk-DocDbElastic-2.0.jar
├── AwsJavaSdk-Drs-2.0.jar
├── AwsJavaSdk-DynamoDb-2.0.jar
├── AwsJavaSdk-DynamoDb-Enhanced-2.0.jar
├── AwsJavaSdk-Ebs-2.0.jar
├── AwsJavaSdk-Ec2-2.0.jar
├── AwsJavaSdk-Ec2InstanceConnect-2.0.jar
├── AwsJavaSdk-Ecr-2.0.jar
├── AwsJavaSdk-EcrPublic-2.0.jar
├── AwsJavaSdk-Ecs-2.0.jar
├── AwsJavaSdk-Efs-2.0.jar
├── AwsJavaSdk-Eks-2.0.jar
├── AwsJavaSdk-EksAuth-2.0.jar
├── AwsJavaSdk-ElastiCache-2.0.jar
├── AwsJavaSdk-ElasticBeanstalk-2.0.jar
├── AwsJavaSdk-ElasticInference-2.0.jar
├── AwsJavaSdk-ElasticLoadBalancing-2.0.jar
├── AwsJavaSdk-ElasticLoadBalancingV2-2.0.jar
├── AwsJavaSdk-ElasticTranscoder-2.0.jar
├── AwsJavaSdk-ElasticsearchService-2.0.jar
├── AwsJavaSdk-Emr-2.0.jar
├── AwsJavaSdk-EmrContainers-2.0.jar
├── AwsJavaSdk-EmrServerless-2.0.jar
├── AwsJavaSdk-EntityResolution-2.0.jar
├── AwsJavaSdk-EventBridge-2.0.jar
├── AwsJavaSdk-Evidently-2.0.jar
├── AwsJavaSdk-FSx-2.0.jar
├── AwsJavaSdk-Finspace-2.0.jar
├── AwsJavaSdk-FinspaceData-2.0.jar
├── AwsJavaSdk-Firehose-2.0.jar
├── AwsJavaSdk-Fis-2.0.jar
├── AwsJavaSdk-Fms-2.0.jar
├── AwsJavaSdk-Forecast-2.0.jar
├── AwsJavaSdk-Forecastquery-2.0.jar
├── AwsJavaSdk-FraudDetector-2.0.jar
├── AwsJavaSdk-FreeTier-2.0.jar
├── AwsJavaSdk-GameLift-2.0.jar
├── AwsJavaSdk-GameSparks-2.0.jar
├── AwsJavaSdk-Glacier-2.0.jar
├── AwsJavaSdk-GlobalAccelerator-2.0.jar
├── AwsJavaSdk-Glue-2.0.jar
├── AwsJavaSdk-Grafana-2.0.jar
├── AwsJavaSdk-Greengrass-2.0.jar
├── AwsJavaSdk-GreengrassV2-2.0.jar
├── AwsJavaSdk-GroundStation-2.0.jar
├── AwsJavaSdk-GuardDuty-2.0.jar
├── AwsJavaSdk-Health-2.0.jar
├── AwsJavaSdk-HealthLake-2.0.jar
├── AwsJavaSdk-Honeycode-2.0.jar
├── AwsJavaSdk-HttpClient-2.0.jar
├── AwsJavaSdk-HttpClient-ApacheClient-2.0.jar
├── AwsJavaSdk-HttpClient-CrtClient-2.0.jar
├── AwsJavaSdk-HttpClient-NettyNioClient-2.0.jar
├── AwsJavaSdk-HttpClient-UrlConnectionClient-2.0.jar
├── AwsJavaSdk-Iam-2.0.jar
├── AwsJavaSdk-Iam-PolicyBuilder-2.0.jar
├── AwsJavaSdk-Identitystore-2.0.jar
├── AwsJavaSdk-Imagebuilder-2.0.jar
├── AwsJavaSdk-Imds-2.0.jar
├── AwsJavaSdk-Inspector-2.0.jar
├── AwsJavaSdk-Inspector2-2.0.jar
├── AwsJavaSdk-InspectorScan-2.0.jar
├── AwsJavaSdk-InternetMonitor-2.0.jar
├── AwsJavaSdk-IoTAnalytics-2.0.jar
├── AwsJavaSdk-IoTFleetHub-2.0.jar
├── AwsJavaSdk-IoTFleetWise-2.0.jar
├── AwsJavaSdk-IoTSecureTunneling-2.0.jar
├── AwsJavaSdk-IoTSiteWise-2.0.jar
├── AwsJavaSdk-IoTThingsGraph-2.0.jar
├── AwsJavaSdk-IoTTwinMaker-2.0.jar
├── AwsJavaSdk-Iot-2.0.jar
├── AwsJavaSdk-Iot1ClickDevicesService-2.0.jar
├── AwsJavaSdk-Iot1ClickProjects-2.0.jar
├── AwsJavaSdk-IotDataPlane-2.0.jar
├── AwsJavaSdk-IotDeviceAdvisor-2.0.jar
├── AwsJavaSdk-IotEvents-2.0.jar
├── AwsJavaSdk-IotEventsData-2.0.jar
├── AwsJavaSdk-IotJobsDataPlane-2.0.jar
├── AwsJavaSdk-IotRoboRunner-2.0.jar
├── AwsJavaSdk-IotWireless-2.0.jar
├── AwsJavaSdk-Ivs-2.0.jar
├── AwsJavaSdk-IvsRealTime-2.0.jar
├── AwsJavaSdk-Ivschat-2.0.jar
├── AwsJavaSdk-Kafka-2.0.jar
├── AwsJavaSdk-KafkaConnect-2.0.jar
├── AwsJavaSdk-Kendra-2.0.jar
├── AwsJavaSdk-KendraRanking-2.0.jar
├── AwsJavaSdk-Keyspaces-2.0.jar
├── AwsJavaSdk-Kinesis-2.0.jar
├── AwsJavaSdk-KinesisAnalytics-2.0.jar
├── AwsJavaSdk-KinesisAnalyticsV2-2.0.jar
├── AwsJavaSdk-KinesisVideo-2.0.jar
├── AwsJavaSdk-KinesisVideoArchivedMedia-2.0.jar
├── AwsJavaSdk-KinesisVideoMedia-2.0.jar
├── AwsJavaSdk-KinesisVideoSignaling-2.0.jar
├── AwsJavaSdk-KinesisVideoWebRtcStorage-2.0.jar
├── AwsJavaSdk-Kms-2.0.jar
├── AwsJavaSdk-LakeFormation-2.0.jar
├── AwsJavaSdk-Lambda-2.0.jar
├── AwsJavaSdk-LaunchWizard-2.0.jar
├── AwsJavaSdk-LexModelBuildingService-2.0.jar
├── AwsJavaSdk-LexModelsV2-2.0.jar
├── AwsJavaSdk-LexRuntimeService-2.0.jar
├── AwsJavaSdk-LexRuntimeV2-2.0.jar
├── AwsJavaSdk-LicenseManager-2.0.jar
├── AwsJavaSdk-LicenseManagerLinuxSubscriptions-2.0.jar
├── AwsJavaSdk-LicenseManagerUserSubscriptions-2.0.jar
├── AwsJavaSdk-Lightsail-2.0.jar
├── AwsJavaSdk-Location-2.0.jar
├── AwsJavaSdk-LookoutEquipment-2.0.jar
├── AwsJavaSdk-LookoutMetrics-2.0.jar
├── AwsJavaSdk-LookoutVision-2.0.jar
├── AwsJavaSdk-M2-2.0.jar
├── AwsJavaSdk-MTurk-2.0.jar
├── AwsJavaSdk-MachineLearning-2.0.jar
├── AwsJavaSdk-Macie2-2.0.jar
├── AwsJavaSdk-ManagedBlockchain-2.0.jar
├── AwsJavaSdk-ManagedBlockchainQuery-2.0.jar
├── AwsJavaSdk-MarketplaceAgreement-2.0.jar
├── AwsJavaSdk-MarketplaceCatalog-2.0.jar
├── AwsJavaSdk-MarketplaceCommerceAnalytics-2.0.jar
├── AwsJavaSdk-MarketplaceDeployment-2.0.jar
├── AwsJavaSdk-MarketplaceEntitlementService-2.0.jar
├── AwsJavaSdk-MarketplaceMetering-2.0.jar
├── AwsJavaSdk-MediaConnect-2.0.jar
├── AwsJavaSdk-MediaConvert-2.0.jar
├── AwsJavaSdk-MediaLive-2.0.jar
├── AwsJavaSdk-MediaPackage-2.0.jar
├── AwsJavaSdk-MediaPackageV2-2.0.jar
├── AwsJavaSdk-MediaPackageVod-2.0.jar
├── AwsJavaSdk-MediaStore-2.0.jar
├── AwsJavaSdk-MediaStoreData-2.0.jar
├── AwsJavaSdk-MediaTailor-2.0.jar
├── AwsJavaSdk-MedicalImaging-2.0.jar
├── AwsJavaSdk-MemoryDb-2.0.jar
├── AwsJavaSdk-MetricPublisher-CloudWatch-2.0.jar
├── AwsJavaSdk-Mgn-2.0.jar
├── AwsJavaSdk-MigrationHub-2.0.jar
├── AwsJavaSdk-MigrationHubConfig-2.0.jar
├── AwsJavaSdk-MigrationHubOrchestrator-2.0.jar
├── AwsJavaSdk-MigrationHubRefactorSpaces-2.0.jar
├── AwsJavaSdk-MigrationHubStrategy-2.0.jar
├── AwsJavaSdk-Mobile-2.0.jar
├── AwsJavaSdk-Mq-2.0.jar
├── AwsJavaSdk-Mwaa-2.0.jar
├── AwsJavaSdk-Neptune-2.0.jar
├── AwsJavaSdk-Neptunedata-2.0.jar
├── AwsJavaSdk-NetworkFirewall-2.0.jar
├── AwsJavaSdk-NetworkManager-2.0.jar
├── AwsJavaSdk-NetworkMonitor-2.0.jar
├── AwsJavaSdk-Nimble-2.0.jar
├── AwsJavaSdk-Oam-2.0.jar
├── AwsJavaSdk-Omics-2.0.jar
├── AwsJavaSdk-OpenSearch-2.0.jar
├── AwsJavaSdk-OpenSearchServerless-2.0.jar
├── AwsJavaSdk-OpsWorks-2.0.jar
├── AwsJavaSdk-OpsWorksCm-2.0.jar
├── AwsJavaSdk-Organizations-2.0.jar
├── AwsJavaSdk-Osis-2.0.jar
├── AwsJavaSdk-Outposts-2.0.jar
├── AwsJavaSdk-Panorama-2.0.jar
├── AwsJavaSdk-PaymentCryptography-2.0.jar
├── AwsJavaSdk-PaymentCryptographyData-2.0.jar
├── AwsJavaSdk-PcaConnectorAd-2.0.jar
├── AwsJavaSdk-Personalize-2.0.jar
├── AwsJavaSdk-PersonalizeEvents-2.0.jar
├── AwsJavaSdk-PersonalizeRuntime-2.0.jar
├── AwsJavaSdk-Pi-2.0.jar
├── AwsJavaSdk-Pinpoint-2.0.jar
├── AwsJavaSdk-PinpointEmail-2.0.jar
├── AwsJavaSdk-PinpointSmsVoice-2.0.jar
├── AwsJavaSdk-PinpointSmsVoiceV2-2.0.jar
├── AwsJavaSdk-Pipes-2.0.jar
├── AwsJavaSdk-Polly-2.0.jar
├── AwsJavaSdk-Pricing-2.0.jar
├── AwsJavaSdk-PrivateNetworks-2.0.jar
├── AwsJavaSdk-Proton-2.0.jar
├── AwsJavaSdk-QBusiness-2.0.jar
├── AwsJavaSdk-QConnect-2.0.jar
├── AwsJavaSdk-Qldb-2.0.jar
├── AwsJavaSdk-QldbSession-2.0.jar
├── AwsJavaSdk-QuickSight-2.0.jar
├── AwsJavaSdk-Ram-2.0.jar
├── AwsJavaSdk-Rbin-2.0.jar
├── AwsJavaSdk-Rds-2.0.jar
├── AwsJavaSdk-RdsData-2.0.jar
├── AwsJavaSdk-Redshift-2.0.jar
├── AwsJavaSdk-RedshiftData-2.0.jar
├── AwsJavaSdk-RedshiftServerless-2.0.jar
├── AwsJavaSdk-Rekognition-2.0.jar
├── AwsJavaSdk-Repostspace-2.0.jar
├── AwsJavaSdk-Resiliencehub-2.0.jar
├── AwsJavaSdk-ResourceExplorer2-2.0.jar
├── AwsJavaSdk-ResourceGroups-2.0.jar
├── AwsJavaSdk-ResourceGroupsTaggingApi-2.0.jar
├── AwsJavaSdk-RoboMaker-2.0.jar
├── AwsJavaSdk-RolesAnywhere-2.0.jar
├── AwsJavaSdk-Route53-2.0.jar
├── AwsJavaSdk-Route53Domains-2.0.jar
├── AwsJavaSdk-Route53RecoveryCluster-2.0.jar
├── AwsJavaSdk-Route53RecoveryControlConfig-2.0.jar
├── AwsJavaSdk-Route53RecoveryReadiness-2.0.jar
├── AwsJavaSdk-Route53Resolver-2.0.jar
├── AwsJavaSdk-Rum-2.0.jar
├── AwsJavaSdk-S3-2.0.jar
├── AwsJavaSdk-S3-TransferManager-2.0.jar
├── AwsJavaSdk-S3Control-2.0.jar
├── AwsJavaSdk-S3Outposts-2.0.jar
├── AwsJavaSdk-SageMaker-2.0.jar
├── AwsJavaSdk-SageMakerA2IRuntime-2.0.jar
├── AwsJavaSdk-SageMakerFeatureStoreRuntime-2.0.jar
├── AwsJavaSdk-SageMakerGeospatial-2.0.jar
├── AwsJavaSdk-SageMakerMetrics-2.0.jar
├── AwsJavaSdk-SageMakerRuntime-2.0.jar
├── AwsJavaSdk-SagemakerEdge-2.0.jar
├── AwsJavaSdk-Savingsplans-2.0.jar
├── AwsJavaSdk-Scheduler-2.0.jar
├── AwsJavaSdk-Schemas-2.0.jar
├── AwsJavaSdk-SecretsManager-2.0.jar
├── AwsJavaSdk-SecurityHub-2.0.jar
├── AwsJavaSdk-SecurityLake-2.0.jar
├── AwsJavaSdk-ServerlessApplicationRepository-2.0.jar
├── AwsJavaSdk-ServiceCatalog-2.0.jar
├── AwsJavaSdk-ServiceCatalogAppRegistry-2.0.jar
├── AwsJavaSdk-ServiceDiscovery-2.0.jar
├── AwsJavaSdk-ServiceQuotas-2.0.jar
├── AwsJavaSdk-Ses-2.0.jar
├── AwsJavaSdk-SesV2-2.0.jar
├── AwsJavaSdk-Sfn-2.0.jar
├── AwsJavaSdk-Shield-2.0.jar
├── AwsJavaSdk-Signer-2.0.jar
├── AwsJavaSdk-SimSpaceWeaver-2.0.jar
├── AwsJavaSdk-Sms-2.0.jar
├── AwsJavaSdk-SnowDeviceManagement-2.0.jar
├── AwsJavaSdk-Snowball-2.0.jar
├── AwsJavaSdk-Sns-2.0.jar
├── AwsJavaSdk-Sqs-2.0.jar
├── AwsJavaSdk-Ssm-2.0.jar
├── AwsJavaSdk-SsmContacts-2.0.jar
├── AwsJavaSdk-SsmIncidents-2.0.jar
├── AwsJavaSdk-SsmSap-2.0.jar
├── AwsJavaSdk-Sso-2.0.jar
├── AwsJavaSdk-SsoAdmin-2.0.jar
├── AwsJavaSdk-SsoOidc-2.0.jar
├── AwsJavaSdk-StorageGateway-2.0.jar
├── AwsJavaSdk-Sts-2.0.jar
├── AwsJavaSdk-SupplyChain-2.0.jar
├── AwsJavaSdk-Support-2.0.jar
├── AwsJavaSdk-SupportApp-2.0.jar
├── AwsJavaSdk-Swf-2.0.jar
├── AwsJavaSdk-Synthetics-2.0.jar
├── AwsJavaSdk-Test-RuleSetTestingCore-2.0.jar
├── AwsJavaSdk-Textract-2.0.jar
├── AwsJavaSdk-TimestreamQuery-2.0.jar
├── AwsJavaSdk-TimestreamWrite-2.0.jar
├── AwsJavaSdk-Tnb-2.0.jar
├── AwsJavaSdk-Transcribe-2.0.jar
├── AwsJavaSdk-TranscribeStreaming-2.0.jar
├── AwsJavaSdk-Transfer-2.0.jar
├── AwsJavaSdk-Translate-2.0.jar
├── AwsJavaSdk-TrustedAdvisor-2.0.jar
├── AwsJavaSdk-VerifiedPermissions-2.0.jar
├── AwsJavaSdk-VoiceId-2.0.jar
├── AwsJavaSdk-VpcLattice-2.0.jar
├── AwsJavaSdk-Waf-2.0.jar
├── AwsJavaSdk-Wafv2-2.0.jar
├── AwsJavaSdk-WellArchitected-2.0.jar
├── AwsJavaSdk-Wisdom-2.0.jar
├── AwsJavaSdk-WorkDocs-2.0.jar
├── AwsJavaSdk-WorkLink-2.0.jar
├── AwsJavaSdk-WorkMail-2.0.jar
├── AwsJavaSdk-WorkMailMessageFlow-2.0.jar
├── AwsJavaSdk-WorkSpaces-2.0.jar
├── AwsJavaSdk-WorkSpacesThinClient-2.0.jar
├── AwsJavaSdk-WorkSpacesWeb-2.0.jar
├── AwsJavaSdk-XRay-2.0.jar
├── JMESPathJava-1.12.x.jar
├── JakartaCommons-logging-1.2.jar
├── Json-smart-v2-1.1.jar
├── LICENSE.txt
├── NOTICE.txt
├── README.txt
├── SFNASLJsonPath-2.0.1.jar
├── StepFunctionsLocal.jar
├── StepFunctionsLocal.tar.gz
├── ant-antlr.jar
├── ant-apache-bcel.jar
├── ant-apache-bsf.jar
├── ant-apache-log4j.jar
├── ant-apache-oro.jar
├── ant-apache-regexp.jar
├── ant-apache-resolver.jar
├── ant-apache-xalan2.jar
├── ant-commons-logging.jar
├── ant-commons-net.jar
├── ant-jai.jar
├── ant-javamail.jar
├── ant-jdepend.jar
├── ant-jmf.jar
├── ant-jsch.jar
├── ant-junit.jar
├── ant-junit4.jar
├── ant-launcher.jar
├── ant-netrexx.jar
├── ant-swing.jar
├── ant-testutil.jar
├── ant.jar
├── apiguardian-api-1.1.2.jar
├── asm-9.x.jar
├── asm-commons-9.x.jar
├── asm-tree-9.x.jar
├── asm-util-9.x.jar
├── assertj-core-3.25.3.jar
├── aws-sdk-java-third-party-jackson-core-2.25.52.jar
├── aws-sdk-java-third-party-jackson-dataformat-cbor-2.25.52.jar
├── byte-buddy-1.14.14.jar
├── byte-buddy-agent-1.14.14.jar
├── checker-qual-3.42.0.jar
├── commons-cli-1.6.0.jar
├── commons-codec-1.17.0.jar
├── commons-collections-3.2.2.jar
├── commons-io-2.5.jar
├── commons-lang3-3.4.jar
├── dagger-2.48.1.jar
├── error_prone_annotations-2.26.1.jar
├── failureaccess-1.0.2.jar
├── gson-2.x.jar
├── guava-33.1.0-jre.jar
├── http2-client-11.0.17.jar
├── http2-common-11.0.17.jar
├── http2-hpack-11.0.17.jar
├── http2-http-client-transport-11.0.17.jar
├── http2-server-11.0.17.jar
├── infinispan-common-11.0.17.jar
├── infinispan-embedded-query-11.0.17.jar
├── infinispan-remote-query-11.0.17.jar
├── ion-java-1.5.1.jar
├── j2objc-annotations-2.8.jar
├── jackson-annotations-2.12.7.jar
├── jackson-core-2.12.7.jar
├── jackson-databind-2.12.7.1.jar
├── jackson-dataformat-cbor-2.12.7.jar
├── jackson-datatype-jdk8-2.12.7.jar
├── jackson-jr-objects-2.12.7.jar
├── jackson-jr-stree-2.12.7.jar
├── jakarta.transaction-api-2.0.0.jar
├── javapoet-1.13.0.jar
├── javax.inject-1.jar
├── jetty-alpn-client-11.0.17.jar
├── jetty-alpn-conscrypt-server-11.0.17.jar
├── jetty-alpn-java-client-11.0.17.jar
├── jetty-alpn-java-server-11.0.17.jar
├── jetty-alpn-server-11.0.17.jar
├── jetty-annotations-11.0.17.jar
├── jetty-cdi-11.0.17.jar
├── jetty-client-11.0.17.jar
├── jetty-deploy-11.0.17.jar
├── jetty-hazelcast-11.0.17.jar
├── jetty-http-11.0.17.jar
├── jetty-io-11.0.17.jar
├── jetty-jaas-11.0.17.jar
├── jetty-jakarta-servlet-api-5.0.2.jar
├── jetty-jakarta-websocket-api-2.0.0.jar
├── jetty-jaspi-11.0.17.jar
├── jetty-jmx-11.0.17.jar
├── jetty-jndi-11.0.17.jar
├── jetty-keystore-11.0.17.jar
├── jetty-memcached-sessions-11.0.17.jar
├── jetty-nosql-11.0.17.jar
├── jetty-openid-11.0.17.jar
├── jetty-plus-11.0.17.jar
├── jetty-proxy-11.0.17.jar
├── jetty-quickstart-11.0.17.jar
├── jetty-rewrite-11.0.17.jar
├── jetty-security-11.0.17.jar
├── jetty-server-11.0.17.jar
├── jetty-servlet-11.0.17.jar
├── jetty-servlets-11.0.17.jar
├── jetty-setuid-java-1.0.4.jar
├── jetty-unixdomain-server-11.0.17.jar
├── jetty-unixsocket-common-11.0.17.jar
├── jetty-unixsocket-server-11.0.17.jar
├── jetty-util-11.0.17.jar
├── jetty-util-ajax-11.0.17.jar
├── jetty-webapp-11.0.17.jar
├── jetty-xml-11.0.17.jar
├── jna-5.14.0.jar
├── jna-platform-5.14.0.jar
├── joda-time-2.12.5.jar
├── jsr305-3.0.2.jar
├── junit-jupiter-api-5.9.2.jar
├── junit-jupiter-engine-5.9.2.jar
├── junit-jupiter-params-5.9.2.jar
├── junit-platform-commons-1.9.2.jar
├── junit-platform-console-1.9.2.jar
├── junit-platform-engine-1.9.2.jar
├── junit-platform-launcher-1.9.2.jar
├── junit-platform-reporting-1.9.2.jar
├── lombok-1.18.32.jar
├── mockito-core-4.9.0.jar
├── netty-all-4.1.jar
├── netty-buffer-4.1.jar
├── netty-codec-4.1.jar
├── netty-codec-dns-4.1.jar
├── netty-codec-haproxy-4.1.jar
├── netty-codec-http-4.1.jar
├── netty-codec-http2-4.1.jar
├── netty-codec-memcache-4.1.jar
├── netty-codec-mqtt-4.1.jar
├── netty-codec-redis-4.1.jar
├── netty-codec-smtp-4.1.jar
├── netty-codec-socks-4.1.jar
├── netty-codec-stomp-4.1.jar
├── netty-codec-xml-4.1.jar
├── netty-common-4.1.jar
├── netty-handler-4.1.jar
├── netty-handler-proxy-4.1.jar
├── netty-handler-ssl-ocsp-4.1.jar
├── netty-resolver-4.1.jar
├── netty-resolver-dns-4.1.jar
├── netty-resolver-dns-classes-macos-4.1.jar
├── netty-resolver-dns-native-macos-4.1-osx-aarch_64.jar
├── netty-resolver-dns-native-macos-4.1-osx-x86_64.jar
├── netty-transport-4.1.jar
├── netty-transport-classes-epoll-4.1.jar
├── netty-transport-classes-kqueue-4.1.jar
├── netty-transport-native-epoll-4.1-linux-aarch_64.jar
├── netty-transport-native-epoll-4.1-linux-x86_64.jar
├── netty-transport-native-kqueue-4.1-osx-aarch_64.jar
├── netty-transport-native-kqueue-4.1-osx-x86_64.jar
├── netty-transport-native-unix-common-4.1-linux-x86_64.jar
├── netty-transport-native-unix-common-4.1-osx-x86_64.jar
├── netty-transport-native-unix-common-4.1.jar
├── netty-transport-rxtx-4.1.jar
├── netty-transport-sctp-4.1.jar
├── netty-transport-udt-4.1.jar
├── objenesis-3.x.jar
├── opentest4j-1.2.0.jar
├── org.eclipse.equinox.common_3.6.200.v20130402-1505.jar
├── org.eclipse.jdt.core_3.10.2.v20150120-1634.jar
├── org.eclipse.text_3.5.300.v20130515-1451.jar
├── re2j-1.7.jar
├── reactive-streams-1.0.4.jar
├── resources
│   └── service-list.json
├── rxjava-3.1.8.jar
├── servlet-api-3.1.jar
├── slf4j-api.jar
├── third_party_licenses
│   ├── ASM-5.0.4-LICENSE
│   ├── AtInject-LICENSE-2.0.txt
│   ├── Dagger-2.11-LICENSE.txt
│   ├── Gson-2.8-LICENSE
│   ├── HttpComponents-Core-4.4.10-LICENSE.txt
│   ├── HttpComponents-Core-4.4.10-NOTICE.txt
│   ├── HttpComponents-HttpClient-4.5-LICENSE.txt
│   ├── J2ee_servlet-3.1-LICENSE
│   ├── J2ee_servlet-3.1-NOTICE
│   ├── Jackson-annotations-2.9-LICENSE
│   ├── Jackson-core-2.9-LICENSE
│   ├── Jackson-core-2.9-NOTICE
│   ├── Jackson-databind-2.9-LICENSE
│   ├── Jackson-databind-2.9-NOTICE
│   ├── Jackson-dataformat-cbor-2.6-LICENSE
│   ├── JakartaCommons-cli-1.2-LICENSE.txt
│   ├── JakartaCommons-codec-1.216588-LICENSE.txt
│   ├── JakartaCommons-logging-adapters-1.1-LICENSE.txt
│   ├── JakartaCommons-logging-api-1.1-LICENSE.txt
│   ├── JaywayJsonPath-2.0-LICENSE
│   ├── Jetty-9.3.12.v20160915-LICENSE-eplv10-aslv20.html
│   ├── Jetty-9.3.12.v20160915-NOTICE.txt
│   ├── Jetty-alpn-api-1.1.3-LICENSE-2.0.txt
│   ├── Joda-time-2.8.2-LICENSE-2.0
│   ├── Joda-time-2.8.2-LICENSE.txt
│   ├── Json-smart-v2-2.1-LICENSE.txt
│   ├── Lombok-1.16.18-LICENSE
│   ├── Maven-software-amazon-ion_ion-java-1.x-LICENSE
│   ├── Maven-software-amazon-ion_ion-java-1.x-NOTICE
│   ├── Slf4j-1.7-LICENSE.txt
│   └── Third Party Licenses.txt
├── websocket-core-client-11.0.17.jar
├── websocket-core-common-11.0.17.jar
├── websocket-core-server-11.0.17.jar
├── websocket-jakarta-client-11.0.17.jar
├── websocket-jakarta-common-11.0.17.jar
├── websocket-jakarta-server-11.0.17.jar
├── websocket-jetty-api-11.0.17.jar
├── websocket-jetty-client-11.0.17.jar
├── websocket-jetty-common-11.0.17.jar
├── websocket-jetty-server-11.0.17.jar
└── websocket-servlet-11.0.17.jar

2 directories, 654 files

本体はそこまで大きくないですね。

$ ll -h StepFunctionsLocal.jar
-rw-r--r-- 1 xxxxx xxxxx 1.2M  5月 18 09:07 StepFunctionsLocal.jar

バージョンを確認。なぜか2回出力されます。

$ java -jar StepFunctionsLocal.jar --version
Step Functions Local
Version: 2.0.0
Build: 2024-05-18
Step Functions Local
Version: 2.0.0
Build: 2024-05-18

どうも起動時に同じ情報を出力するので2回表示されてしまうようです。

ヘルプ。

$ java -jar StepFunctionsLocal.jar --help
Step Functions Local
Version: 2.0.0
Build: 2024-05-18
usage: java -jar StepFunctionsLocal.jar
Start a Step Functions Local server

 -account,--aws-account <Account>                                             the AWS account used to create state machines, activities and executions,
                                                                              this is also the account of your Lambda and other resources.
                                                                              By Default, it is set to [123456789012], this is NOT a real account id.
 -batchEndpoint,--batch-endpoint <Batch Endpoint>                             the local endpoint of Batch.
                                                                              e.g. http://localhost:4574
 -dynamoDBEndpoint,--dynamodb-endpoint <DynamoDB Endpoint>                    the local endpoint of DynamoDB.
                                                                              e.g. http://localhost:4574
 -ecsEndpoint,--ecs-endpoint <ECS Endpoint>                                   the local endpoint of ECS.
                                                                              e.g. http://localhost:4574
 -emronEKSEndpoint,--emr-on-eks-endpoint <EMR on EKS Endpoint>                the local endpoint of EMR on EKS.
                                                                              e.g. http://localhost:4574
 -glueEndpoint,--glue-endpoint <Glue Endpoint>                                the local endpoint of Glue.
                                                                              e.g. http://localhost:4574
 -gr,--aws-global-region <GlobalRegion>                                       the region for global services ,
                                                                              By Default, it is set to [aws-global].
 -h,--help                                                                    Show this help information.
 -lambdaEndpoint,--lambda-endpoint <Lambda Endpoint>                          the local endpoint of Lambda.
                                                                              e.g. http://localhost:4574
 -port,--port <Port>                                                          the port to listen on.
                                                                              By Default, it is set to [8083].
 -region,--aws-region <Region>                                                the region where the state machines, activities and executions will be created,
                                                                              this is also the region of other AWS resources referred in the state machine.
                                                                              By Default, it is set to [us-east-1].
 -sageMakerEndpoint,--sagemaker-endpoint <SageMaker Endpoint>                 the local endpoint of SageMaker.
                                                                              e.g. http://localhost:4574
 -snsEndpoint,--sns-endpoint <SNS Endpoint>                                   the local endpoint of SNS.
                                                                              e.g. http://localhost:4574
 -sqsEndpoint,--sqs-endpoint <SQS Endpoint>                                   the local endpoint of SQS.
                                                                              e.g. http://localhost:4574
 -stepFunctionsAthena,--step-functions-athena <Step Functions Athena>         the local endpoint of Athena.
                                                                              e.g. http://localhost:4574
 -stepFunctionsDataBrew,--step-functions-databrew <Step Functions DataBrew>   the local endpoint of DataBrew.
                                                                              e.g. http://localhost:4574
 -stepFunctionsEKS,--step-functions-eks <Step Functions EKS>                  the local endpoint of EKS.
                                                                              e.g. http://localhost:4574
 -stepFunctionsEndpoint,--step-functions-endpoint <Step Functions Endpoint>   the local endpoint of Step Functions.
                                                                              e.g. http://localhost:4574
 -v,--version                                                                 Show the version and build of Step Functions Local.
 -waitTimeScale,--wait-time-scale <Wait Time Scale>                           the scale of the wait time in the Wait state
                                                                              e.g. 0.5 means cut the original wait time to half
                                                                              e.g. 0 means no wait time
                                                                              e.g. 2 means double the original wait time

いくつか気になる情報がありますね。

AWSアカウントIDのデフォルト値は123456789012のようです。

 -account,--aws-account <Account>                                             the AWS account used to create state machines, activities and executions,
                                                                              this is also the account of your Lambda and other resources.
                                                                              By Default, it is set to [123456789012], this is NOT a real account id.

リージョンはus-east-1ですね。

 -region,--aws-region <Region>                                                the region where the state machines, activities and executions will be created,
                                                                              this is also the region of other AWS resources referred in the state machine.
                                                                              By Default, it is set to [us-east-1].

ポートとしては8083と

 -port,--port <Port>                                                          the port to listen on.
                                                                              By Default, it is set to [8083].

その他のサービス用に4574がありそうです。

 -batchEndpoint,--batch-endpoint <Batch Endpoint>                             the local endpoint of Batch.
                                                                              e.g. http://localhost:4574
 -dynamoDBEndpoint,--dynamodb-endpoint <DynamoDB Endpoint>                    the local endpoint of DynamoDB.
                                                                              e.g. http://localhost:4574
 -ecsEndpoint,--ecs-endpoint <ECS Endpoint>                                   the local endpoint of ECS.
                                                                              e.g. http://localhost:4574
 -emronEKSEndpoint,--emr-on-eks-endpoint <EMR on EKS Endpoint>                the local endpoint of EMR on EKS.
                                                                              e.g. http://localhost:4574
 -glueEndpoint,--glue-endpoint <Glue Endpoint>                                the local endpoint of Glue.
                                                                              e.g. http://localhost:4574
 -lambdaEndpoint,--lambda-endpoint <Lambda Endpoint>                          the local endpoint of Lambda.
                                                                              e.g. http://localhost:4574
 -sageMakerEndpoint,--sagemaker-endpoint <SageMaker Endpoint>                 the local endpoint of SageMaker.
                                                                              e.g. http://localhost:4574
 -snsEndpoint,--sns-endpoint <SNS Endpoint>                                   the local endpoint of SNS.
                                                                              e.g. http://localhost:4574
 -sqsEndpoint,--sqs-endpoint <SQS Endpoint>                                   the local endpoint of SQS.
                                                                              e.g. http://localhost:4574
 -stepFunctionsAthena,--step-functions-athena <Step Functions Athena>         the local endpoint of Athena.
                                                                              e.g. http://localhost:4574
 -stepFunctionsDataBrew,--step-functions-databrew <Step Functions DataBrew>   the local endpoint of DataBrew.
                                                                              e.g. http://localhost:4574
 -stepFunctionsEKS,--step-functions-eks <Step Functions EKS>                  the local endpoint of EKS.
                                                                              e.g. http://localhost:4574
 -stepFunctionsEndpoint,--step-functions-endpoint <Step Functions Endpoint>   the local endpoint of Step Functions.
                                                                              e.g. http://localhost:4574

8083はAWS Step Functionsとしてのポートになるようです。

Step Functions Local の設定オプションを指定する - AWS Step Functions

AWS Step Functions Localを実行してみる

では、AWS Step Functions Localを実行してみます。

Step Functions Local を自分のコンピュータで実行する - AWS Step Functions

まずは起動。

$ java -jar StepFunctionsLocal.jar

クレデンシャルがない、と怒られました。

Step Functions Local
Version: 2.0.0
Build: 2024-05-18
2024-11-09 16:02:12.444: Failed to load credentials from environment because Unable to load AWS credentials from environment variables (AWS_ACCESS_KEY_ID (or AWS_ACCESS_KEY) and AWS_SECRET_KEY (or AWS_SECRET_ACCESS_KEY))
2024-11-09 16:02:12.506: Failed to load credentials from profile: default because profile file cannot be null
2024-11-09 16:02:12.506: Failed to load credentials from system properties because Unable to load AWS credentials from Java system properties (aws.accessKeyId and aws.secretKey)
2024-11-09 16:02:12.506: Failed to load credentials, default to dummy credentials, so any connection to AWS services will not work, connections to local endpoints are not affected.
2024-11-09 16:02:13.162: Starting server on port 8083 with account 123456789012, region us-east-1
SLF4J: No SLF4J providers were found.
SLF4J: Defaulting to no-operation (NOP) logger implementation
SLF4J: See https://www.slf4j.org/codes.html#noProviders for further details.

なにか設定しておいた方がよさそうですね。

ひとまず以下で設定。

$ export AWS_ACCESS_KEY_ID=test
$ export AWS_SECRET_ACCESS_KEY=test

起動。

$ java -jar StepFunctionsLocal.jar

今度はだいぶ静かになりました。

2024-11-09 16:03:53.721: Starting server on port 8083 with account 123456789012, region us-east-1
SLF4J: No SLF4J providers were found.
SLF4J: Defaulting to no-operation (NOP) logger implementation
SLF4J: See https://www.slf4j.org/codes.html#noProviders for further details.

ステートマシンの作成。

$ aws --endpoint-url http://localhost:8083 stepfunctions create-state-machine --definition "{\
  \"Comment\": \"A Hello World example of the Amazon States Language using a Pass state\",\
  \"StartAt\": \"HelloWorld\",\
  \"States\": {\
    \"HelloWorld\": {\
      \"Type\": \"Pass\",\
      \"End\": true\
    }\
  }}" --name "HelloWorld" --role-arn "arn:aws:iam::012345678901:role/DummyRole"

「HelloWorld」という名前のステートマシンですね。--role-arnはダミーでいいみたいなのですが、構文は正しく書く必要があるみたいです。

レスポンス。

{
    "stateMachineArn": "arn:aws:states:us-east-1:123456789012:stateMachine:HelloWorld",
    "creationDate": "2024-11-09T16:06:35.497000+09:00"
}

作成したステートマシンのARNが得られました。

ステートマシンの実行。

$ aws --endpoint-url http://localhost:8083 stepfunctions start-execution --state-machine-arn arn:aws:states:us-east-1:123456789012:stateMachine:HelloWorld

レスポンス。

{
    "executionArn": "arn:aws:states:us-east-1:123456789012:execution:HelloWorld:dfe89d35-7c86-4b8f-a403-d0acda813c64",
    "startDate": "2024-11-09T16:09:05.502000+09:00"
}

結果の確認。

$ aws --endpoint-url http://localhost:8083 stepfunctions describe-execution --execution-arn arn:aws:states:us-east-1:123456789012:execution:HelloWorld:dfe89d35-7c86-4b8f-a403-d0acda813c64
{
    "executionArn": "arn:aws:states:us-east-1:123456789012:execution:HelloWorld:dfe89d35-7c86-4b8f-a403-d0acda813c64",
    "stateMachineArn": "arn:aws:states:us-east-1:123456789012:stateMachine:HelloWorld",
    "name": "dfe89d35-7c86-4b8f-a403-d0acda813c64",
    "status": "SUCCEEDED",
    "startDate": "2024-11-09T16:09:05.502000+09:00",
    "stopDate": "2024-11-09T16:09:05.540000+09:00",
    "input": "{}",
    "inputDetails": {
        "included": true
    },
    "output": "{}",
    "outputDetails": {
        "included": true
    }
}

まあ、なにもしていないに等しいのですが。

おわりに

AWS Step Functions Localをとりあえず動かしてみました。

とはいえAWS Step Functionsの概要をざっくりと見たり、単純にAWS Step Functions Localを動かしてみただけなので、次はAWS SAM CLIを
使ってAWS Lambda関数と組み合わせてみたいと思います。