From 09a2efa912da064e4ed23b98131ab7ee42f93cb5 Mon Sep 17 00:00:00 2001 From: Rahul Sringeri Date: Tue, 29 Jul 2025 13:44:35 +0200 Subject: [PATCH] Terraform template Step Functions with comprehend --- sfn-comprehend-terraform/README.md | 92 ++++++++++++++++ sfn-comprehend-terraform/example-pattern.json | 65 ++++++++++++ .../image/architecture.png | Bin 0 -> 13076 bytes sfn-comprehend-terraform/main.tf | 98 ++++++++++++++++++ .../statemachine/detectSentiment.asl.json | 26 +++++ 5 files changed, 281 insertions(+) create mode 100644 sfn-comprehend-terraform/README.md create mode 100644 sfn-comprehend-terraform/example-pattern.json create mode 100644 sfn-comprehend-terraform/image/architecture.png create mode 100644 sfn-comprehend-terraform/main.tf create mode 100644 sfn-comprehend-terraform/statemachine/detectSentiment.asl.json diff --git a/sfn-comprehend-terraform/README.md b/sfn-comprehend-terraform/README.md new file mode 100644 index 000000000..ea1c91ceb --- /dev/null +++ b/sfn-comprehend-terraform/README.md @@ -0,0 +1,92 @@ +# AWS Step Functions Express Workflow to Amazon Comprehend for Sentiment Analysis + +The Step Functions Express Workflow can be started using the AWS CLI or from another service (e.g. API Gateway) to run an express workflow and return the result. + +The Terraform template deploys a Step Functions Express workflow that invokes Amazon Comprehend and returns the sentiment analysis done by Comprehend in the response. The Terraform template contains the required resouces with IAM permission to run the application with logging enabled. + +Learn more about this pattern at Serverless Land Patterns: https://serverlessland.com/patterns/sfn-comprehend-terraform + +Important: this application uses various AWS services and there are costs associated with these services after the Free Tier usage - please see the [AWS Pricing page](https://aws.amazon.com/pricing/) for details. You are responsible for any AWS costs incurred. No warranty is implied in this example. + +## Requirements + +* [Create an AWS account](https://portal.aws.amazon.com/gp/aws/developer/registration/index.html) if you do not already have one and log in. The IAM user that you use must have sufficient permissions to make necessary AWS service calls and manage AWS resources. +* [AWS CLI](https://docs.aws.amazon.com/cli/latest/userguide/install-cliv2.html) installed and configured +* [Git Installed](https://git-scm.com/book/en/v2/Getting-Started-Installing-Git) +* [Terraform](https://learn.hashicorp.com/tutorials/terraform/install-cli) with version 1.x installed + +## Deployment Instructions + +1. Create a new directory, navigate to that directory in a terminal and clone the GitHub repository: + ``` + git clone https://github.com/aws-samples/serverless-patterns + ``` +2. Change directory to the pattern directory: + ``` + cd sfn-comprehend-terraform + ``` +3. From the command line, use Terraform to deploy the AWS resources for the pattern as specified in the main.tf file: + ``` + terraform init + terraform apply --auto-approve + ``` +4. Review the output from the Terraform deployment process to ensure there are no errors. + +5. Note the outputs from the SAM deployment process. These contain the resource names and/or ARNs which are used for testing. + +## How it works + +* Start the Express Workflow using the `start-sync-execution` api command with a "message" string in English for sentiment analysis in the input payload. +* The Express Workflow invokes Amazon Comprehend. +* Comprehend returns the sentiment of the input text. +* If the integration works fine, the sentiment analysis outcome is returned in Step Function execution results within a `output` object +* If the integration fails, the Step Functions workflow will retry up to 5 times before exiting with a `status:FAILED` response. + +Please refer to the architecture diagram below: + +![End to End Architecture](image/architecture.png) + + +## Testing + +Run the following AWS CLI command to send a 'start-sync-execution` comand to start the Step Functions workflow. Note, you must edit the {StateMachineExpressSyncToComprehend} placeholder with the ARN of the deployed Step Functions workflow. This is provided in the stack outputs. + +```bash +aws stepfunctions start-sync-execution --name "test" --state-machine-arn "{StateMachineExpressSyncToComprehend}" --input "{\"message\":\"I am very happy today.\"}" +``` + +### Example output: + +```bash +{ + "executionArn": "arn:aws:states:us-east-1:796495736600:express:StateMachineExpressSyncToComprehend-cqmUxRLjlvq7:test:8b75495d-cb96-4933-ac25-1f908050e33d", + "stateMachineArn": "arn:aws:states:us-east-1:796495736600:stateMachine:StateMachineExpressSyncToComprehend-cqmUxRLjlvq7", + "name": "test", + "startDate": "2023-10-08T07:35:55.257000+05:30", + "stopDate": "2023-10-08T07:35:55.358000+05:30", + "status": "SUCCEEDED", + "input": "{\"message\":\"I am very happy today.\"}", + "inputDetails": { + "included": true + }, + "output": "{\"message\":\"I am very happy today.\",\"Sentiment\":{\"Sentiment\":\"POSITIVE\",\"SentimentScore\":{\"Mixed\":1.4907288E-4,\"Negative\":1.3237515E-4,\"Neutral\":3.8026855E-4,\"Positive\":0.9993383}}}", + "outputDetails": { + "included": true + }, + "billingDetails": { + "billedMemoryUsedInMB": 64, + "billedDurationInMilliseconds": 200 + } +} +``` +## Cleanup + +Delete the stack + ```bash + terraform destroy --auto-approve + ``` + +---- +Copyright 2025 Amazon.com, Inc. or its affiliates. All Rights Reserved. + +SPDX-License-Identifier: MIT-0 diff --git a/sfn-comprehend-terraform/example-pattern.json b/sfn-comprehend-terraform/example-pattern.json new file mode 100644 index 000000000..882b434ea --- /dev/null +++ b/sfn-comprehend-terraform/example-pattern.json @@ -0,0 +1,65 @@ +{ + "title": "AWS Step Functions Express Workflow to Amazon Comprehend for Sentiment Analysis", + "description": "The Terraform template deploys a Step Functions Express workflow that invokes Amazon Comprehend and returns the sentiment analysis done by Comprehend in the response. The SAM template contains the required resouces with IAM permission to run the application with logging enabled.", + "language": "", + "level": "200", + "framework": "Terraform", + "introBox": { + "headline": "How it works", + "text": [ + "Start the Express Workflow using the start-sync-execution api command with a message string in English for sentiment analysis in the input payload.", + "The Express Workflow invokes Amazon Comprehend.", + "Comprehend returns the sentiment of the input text.", + "If the integration works fine, the sentiment analysis outcome is returned in Step Function execution results within a output object.", + "If the integration fails, the Step Functions workflow will retry up to 5 times before exiting with a status:FAILED response." + ] + }, + "gitHub": { + "template": { + "repoURL": "https://github.com/aws-samples/serverless-patterns/tree/main/sfn-comprehend-terraform", + "templateURL": "serverless-patterns/sfn-comprehend-terraform", + "projectFolder": "sfn-comprehend-terraform", + "templateFile": "sfn-comprehend-terraform/main.tf" + } + }, + "resources": { + "bullets": [ + { + "text": "AWS Step Function - AWS SDK service integrations", + "link": "https://docs.aws.amazon.com/step-functions/latest/dg/supported-services-awssdk.html" + }, + { + "text": "AWS Step Function - CloudWatch Logs", + "link": "https://docs.aws.amazon.com/step-functions/latest/dg/cw-logs.html" + }, + { + "text": "ComprehendBasicAccessPolicy", + "link": "https://docs.aws.amazon.com/serverless-application-model/latest/developerguide/serverless-policy-template-list.html#comprehend-basic-access-policy" + } + ] + }, + "deploy": { + "text": [ + "terraform init", + "terraform apply --auto-approve" + ] + }, + "testing": { + "text": [ + "See the GitHub repo for detailed testing instructions." + ] + }, + "cleanup": { + "text": [ + "terraform destroy --auto-approve" + ] + }, + "authors": [ + { + "name": "Rahul Sringeri", + "image": "", + "bio": "Technical Account Manager at AWS EMEA for Strategic Accounts", + "linkedin": "" + } + ] +} \ No newline at end of file diff --git a/sfn-comprehend-terraform/image/architecture.png b/sfn-comprehend-terraform/image/architecture.png new file mode 100644 index 0000000000000000000000000000000000000000..456f179f31b41ffb9112d6beecad94b3c410d687 GIT binary patch literal 13076 zcmX|oWmH?i);3m(6pFh$6qleuiWe*HPLUGay|}x(y9Nmk#k~{{PO%oZ;`XNZe)r3d zBx}~1GqY#gv!6XD^0Trm1{w((92^{myquI892`6Z_WuhCGVGgrepnjz1Mi|H`w_10 z2iXA}92K0rl!S(-(TU+39sCKxS5umZPb=%|MP^j)t*=)63=rr#>~jgqH{o|TU20O* z0FAwRST0XEx1;mBbKG|GU-|hq98YHQ^ezK?fjm~0H8ixew0*d;-)O&MZ=pCMz0jlR zWPSn}SI35@rs79X)Yial%lp?-Qn>pUztG2HJ0Qz$^+t;4c2AhT`PPN_L5CVA@kvib z1QT$saZ<>Y3GLCKH>3TC8yWk$NEojnD_gw?HsFLkzCaYA<(73$g9az(?!7-7Ru36P zIElM@Z7?1c#7R|gSX7tp-AMh;Krn9h*J(b&No-DZ1T`}rh0xccPpnzcAmDJ+yWs!@ zWa`1b$Tt6SQ5opPAZ*7^>ev-~O(Cm5#1o^Gw;=jSH)LvMzZ?f3dONZb7bMUf{isa!Io?&he!Hr3dtE}SgA?mg+r;N!jt zq0B>DbRxJCnu5%Z;d?2Mu3qJm^A26nOzpmE?3S~b)6IyRX<)swNy!ey1_NP>P=Nj| zf{7FX-A!^ok8tmKeR!r-V#|PvcIX>f7}KQB%O&w6;(T$Iy4&$U>3qaVG!Dqx5#+DH z49DHU7@y{GK@vbn3l+c4MW;s_Dq+bk8JiK%#-?LPkE3_nrW1R8iR_MdsALf92pm5= zTdisRnrqWIas$4!F6`Y+x}mCe7kzWaIF^qJK_sPes&fT5qYC=G7uzQnmojmj^g&y! 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