Show HN: Hiraeth – AWS Emulator

Show HN: Hiraeth – AWS Emulator(github.com)

40 points by ozarkerD 32 days ago | 13 comments

With the recent changes around Localstack pricing/licensing I've been hunting for alternatives. I decided that it might be a fun experiment to try rolling my own. SQS is a service I use heavily so I chose that as the first service to implement. I have more services planned and in development.

A few things I think are cool:

4MB Docker Image Size

Instant Startup

AWS Sigv4 Authentication

A little admin UI that can be helpful for development/troubleshooting

Most of the SQS API implemented, the rest will soon follow :)

great_psy 32 days ago |

What kind of things would you use this to simulate ?

Is this to make sure services are wired up with permission and communicate properly before you deploy or what is the use case ?

Also, why not have a dev environment where you can test things on the real thing (ideally with smaller size instances to save $)

giza182 32 days ago | |

Intergration testing is one. You can run this in your ci/locally to speed up tests. Or just for local dev. We do this with localstack[1]

[1] https://www.localstack.cloud/

ozarkerD 32 days ago | |

Yep integration is my use case as well. It’s nice to not have to worry about setting up real infrastructure for testing client code, parallel execution if you’re on a team, clearing out state each run, etc…

michalc 30 days ago |

> the rest will soon follow

If you’re looking for requests ;-), I would love an ECS (and specifically Fargate) emulator that actually ran Docker containers locally as though they were in ECS

ozarkerD 28 days ago | |

That's a great idea i've had floating around in my head too!

MouadNos 29 days ago |

what compatibility surface is prioritized first for SQS edge cases

ozarkerD 28 days ago | |

Good question. I'm driving mostly off of my own use cases currently, so AWS SDK/CLI/Terraform compatibility. Response formats, codes, messages are best effort, there's a little work to be done there still. There's some gaps around request validation still too.

The idea is to build up a good suite of integration/regression tests as cases are identified by myself or the community (if there is one) through development.

slava_vechir_2 30 days ago |

Works perfectly.

ozarkerD 28 days ago | |

Awesome, appreciate the feedback!

Carrok 32 days ago |

Looks cool! Now add (simulated) billing. ;)

ryanisnan 32 days ago | |

Easy... $<INSERT_VERY_LARGE_RANDOM_NUMBER_HERE>

ozarkerD 28 days ago | |

Maybe a cost explorer emulator would be a fun april fools joke someday :D

leetrout 32 days ago |

Another SQS stand-in is smoothmq

https://github.com/poundifdef/smoothmq