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Changelog

0.7.0a10 (2025-MM-DD)

Function-to-Function Linking

Functions can now link to other functions, enabling Lambda-to-Lambda invocation. When you link a function to another, Stelvio automatically grants lambda:InvokeFunction permission and provides function_arn and function_name via the generated Resources object.

→ Lambda Functions Guide

Scheduled Tasks with Cron

New Cron component for running Lambda functions on a schedule using EventBridge Rules. Supports rate expressions (rate(1 hour)) and cron expressions (cron(0 2 * * ? *)), with options for custom payloads and resource linking.

→ Cron Guide

0.6.1a9 (2025-12-30)

This is a bug-fix release.

  • Fix import handling for locally executed Lambda functions (dev mode)
  • Fix environment variables for locally executed Lambda functions (dev mode)

0.6.0a8 (2025-12-25)

We've been busy this holiday season! Here's our Christmas release 🎄

Dev Mode (stlv dev) 🚀

Run your Lambda code locally while everything else stays in AWS:

stlv dev

Edit your function, hit refresh, see the result. No re-deploy, no waiting.

  • Instant code changes - just save and refresh
  • print() and exceptions appear right in your terminal
  • Attach your favorite debugger
  • Same API Gateway URL, same Function URLs - everything just works

→ Dev Mode Guide

S3 State Sync

Stelvio now stores infrastructure state in S3, making it ready for teams:

  • Shared state - Multiple developers work on the same app without file syncing
  • Locking - Concurrent deployments are blocked to prevent conflicts
  • Crash recovery - State saves continuously; interrupted deploys resume cleanly
  • Operation history - Track deployments across your team

State is stored in S3 bucket automatically. No configuration needed.

→ State Management Guide

CloudFront Router

New Router component for CloudFront-based routing with multiple origins - route different paths to API Gateway, Lambda Function URLs, or other backends.

→ CloudFront Router Guide

Lambda Function URLs

Direct HTTP access to Lambda functions:

my_function = Function("my-func", handler="handler.main", url="public")

→ Function URLs Guide

Other Improvements

  • Cognito scopes - OAuth scope validation on API Gateway routes
  • Simplified DynamoDB subscriptions - Cleaner subscribe() API
  • AWS profile/region - Properly respects system settings

Notes

Auto-generated routing for multiple handlers in the same file has been removed. Routes now create separate Lambda functions. To share a Lambda, use an explicit Function instance.

0.5.0a7 (2025-10-31)

With this release, Stelvio gets:

  • a S3StaticWebsite component for S3 static website hosting with CloudFront CDN and optional custom domain support
  • support for DynamoDB streams and subscriptions.
  • support for Authorizers and CORS for Api

Static Website Hosting with S3 and CloudFront

  • Added stelvio.aws.s3.S3StaticWebsite for managing S3 buckets for static website hosting with CloudFront CDN and optional custom domain support

DynamoDB Streams

  • Added stream property and subscribe method to the DynamoTable component so you can easily enable streams and add lambda that listens to the changes in the table.

Api gateway authorizers

  • Added add_token_authorizer, add_request_authorizer and add_cognito_authorizer so you can add different authorizers.
  • Added default_auth property to set default authorizers for all endpoints and methods
  • Added auth param to the route method to set authorizer on per route basis.

Api gateway CORS

  • Added CorsConfig and CorsConfigDict classes that can be used to pass to the new cors param of Api and its config classes(ApiConfig and ApiConfigDict) to configure cors settings of your Api gateway.

0.4.0a6 (2025-09-05)

With this release, S3 buckets, custom domains (including Cloudflare) for ApiGateway and DynamoDB Indexes are supported.

DNS & Custom domain support

  • Added stelvio.aws.route53.Route53Dns for managing DNS records in AWS Route 53
  • Added stelvio.cloudflare.dns.CloudflareDns for managing DNS records in Cloudflare
  • Added stelvio.aws.acm.AcmValidatedDomain for managing TLS certificates for custom domains in AWS
  • Stelvio now automatically creates and validates TLS certificates for custom domains

S3 Bucket Support

  • Added stelvio.aws.s3.Bucket for managing S3 buckets

DynamoDb Indexes Support

  • Added support for DynamoDB local and global indexes.

Internal improvements & Fixes

  • better docs
  • DynamoTableConfig
  • fix so now we can have same routes in different API Gateways
  • fix to make sure generated roles and policy names with within AWS limits
  • fixed flaky tests
  • properly handling API Gateway account and role and correctly displaying in CLI

0.3.0a5 (2025-07-14)

🎉 Major Release: Complete CLI Experience

This release transforms Stelvio from a library into a complete development platform with a dedicated CLI.

Stelvio CLI (stlv command)

  • stlv init - Initialize new projects with interactive AWS setup
  • stlv deploy - Deploy with real-time progress display
  • stlv diff - Preview changes before deploying
  • stlv destroy - Clean up resources safely
  • stlv refresh - Sync state with actual AWS resources
  • stlv version - Check your Stelvio version

Automatic Pulumi Management

  • Zero-setup deployment - Pulumi installed automatically
  • No more manual Pulumi configuration or project setup

Environments

  • Personal environments (defaults to your username)
  • Shared environments for team collaboration
  • Environment-specific resource naming and isolation

Automatic Passphrase Management

  • Generates and stores passphrases in AWS Parameter Store
  • No more manual passphrase handling

Rich Console Output 🎨

  • Color-coded operations (green=create, yellow=update, red=delete)
  • Real-time deployment progress with operation timing
  • Resource grouping and operation summaries
  • Optional --show-unchanged flag for detailed views

New StelvioApp Architecture

  • Clean decorator-based configuration with @app.config and @app.run

Consistent Resource Naming

  • All resources get {app}-{env}-{name} naming pattern
  • Prevents resource collisions across different deployments

Enhanced API Gateway Support

  • Fixed multiple environment deployment issues
  • Handles existing CloudWatch roles correctly

🐛 Bug Fixes & Improvements

  • Better error messages and debugging information
  • Improved logging system
  • Enhanced confirmation prompts for destructive operations

0.2.0a4 (2025-05-14)

  • Lambda Function dependencies
  • Lambda Layers
  • More tests for faster future progress

0.1.0a2 (2025-02-14)

  • Maintenance release
  • Fixed bug when route couldn't be created if it had just default config
  • Added better checks so Stelvio informs you if there's route conflicts
  • Added tests

0.1.0a1 (2025-01-31)

  • Initial release

  • Very basic support for:

    • AWS Lambda
    • Dynamo DB Table
    • API Gateway