Developing AWS Lambda Functions Locally in VS Code

Very well explained. Easy to understand and grasp.

This content has my full endorsement! If you're interested, there’s a book I’d recommend. "AWS Unleashed: Mastering Amazon Web Services for Software Engineers" by Harrison Quill

If you delete the stack, would the lambda functions get deleted too?

That was very helpful

Thanks Travis, Great Video! BTW - To delete the stack is: sam delete sam-app
This was probably added post your video.

Great video it helps a ton.
one question: if I want to do that with some Python libraries, where should I install those libraries, locally in the same folder (in your example "aws-sam")? something like pip install "library name" -t . ?

Now this is just amazing. I'll use AWS SAM a lot now, thanks!

Only thing missing from this tutorial I think would be a small intro on managing Lambda Layers with AWS SAM too.

Great tutorial. I am wondering what if you want to export existing lambda function and debug it locally in vscode. Would love to see that. Keep up the good work 👍

`sam delete` to delete the whole stack

Looks like aws-sam-cli doesn't provide an `aws` cli anymore. Only one called `sam` - which however doesn't come with a `configure` command. So stuck at the very beginning. Trying to follow along and see when it breaks…

Been doing this for 4 years, but I have a feeling you're doing it 99% suboptimally. Understanding how to set breakpoints, step-through code is the biggest advantage. Equally hopping between regions and accounts is also possible. Plenty of yaml-ers on this site but no devs.

the aws configure step + your script to get sts generating a token for you could be easily replaced using aws-vault, have a look at that

sam delete --stack-name <stackname> is to delete the stack

Travis, you are just awesome. I had the issue with importing different python dependencies, mainly snowflake and sql alchemy, I tried a lot with layers and didn't want to shift to linux. I watched this video 3 days ago. But I was stuck in installing Docker, SAM CLI, and also I had Federated AWS Account. I fixed everything and came back to this video. You have saved me. Great tutorial and complete explanation. Thank you so much for this great content..

In my environment, were devops team locks every thing and use TerraForm for deployment, is there a way to ONLY handle development/testing locally? Without needing the permission to create lambda

That's a neat and modern workflow! Wondering how debugging would work though.

Cool thing about a fully functional approach is that it isolates dependencies and work with arguments, which generally make debugging easier. But I have no experience of working with this in a big environment.

Looking forward to commit to use in in a bigger project.

thanks for video but i have question , can be use boto3 in sam app

This was just what I needed. Thanks!

Hi Travis, thanks a lot. Great tutorial. I have a question if you don't mind: how can I import dependencies in the local environment? Right now I use Layers, but they seem to not be imported locally. Thanks a lot!

Cheers, this is by far the best available explanation of this. But I really wish there was a more straightforward means of escape from the horrorshow browser IDE -- i.e. without SAM, CloudFormation, etc. I guess there's manually building and pushing zip files, but that's no bed of roses either. I seem to keep landing back in the console IDE when I just need to get something done with Lambda.

Can I test a CommonLayer locally using the same steps?

what if there is an existing Lambda function and we want to import it to the local environment to work??
I don't see template.yml getting downloaded for that.
there should be a way to generate it even if lambda is not created with SAM.
if you know the answer do share it.

Great tutorial! You were super clear and informative.

Question for you: how do you get your terminal command line to bring up the past commands you've entered? That seems super useful. I searched but can't find how to enable it.

Thanks man !

sam has cli command "sam delete"

Great! It is very clear explanation and very helpful!

How do you set a breakpoint?

Nicely done. Good clean explanation.

Great man! Thank you so much!
You are a great instructor.

A mock service... a waste of time really. Apart from a hardcoded hello-world, SAM is useless. You can't access any databases or any other service for that matter. Define your lambdas as docker containers and use AWS CDK, have your databases running in containers as well. I wonder how long will it take for SAM to be deprecated.

game changer! thank you for this sir

solid video - thank you

travis, this was very helpful!

Hey Travis, best sam tutorial I've came across. deserves the sub

hi, how to debug the code?

Awesome instructional video. This way of working helps cut out so much nonsense when it comes to working with lambdas!

Oh my god thank you so much for that MFA script. You are a life saver.

Amazing tutorial

It was really helpful, please release more such videos. Thank You.

Amazing tutorial! Very helpful