Convert dummy example into a concrete example #36

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1. kbakk commented on Nov 30, 2021

   

   kbakk

   on Nov 30, 2021

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   A few examples on things I find difficult which I think can help others:

   • Multiple Lambda functions (could be an idea to show how to use two different functions in the same module, as well as two completely standalone modules)
   • Some shared library that all functions uses (showcasing layers)
   • Lambda function with additional modules (in app.py e.g. from my_module import my_func)

   🎉React with 🎉1Reacted by Heitor Lessa
2. heitorlessa commented on Nov 30, 2021

   

   heitorlessa

   on Nov 30, 2021

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   hey @kbakk thank you so much for that. Now that Powertools has a Router functionality, @michaelbrewer and I have been discussing revamping this with two options: Monolithic and Micro function - both with shared and Lambda Layer (build optimization + dev dependency).

   https://awslabs.github.io/aws-lambda-powertools-python/latest/core/event_handler/api_gateway/#considerations

   The monolithic option would take an hour to add since we already have a good project structure that works in both PyCharm and VSCode. The latter requires an additional CLI (e.g. PyInvoke) to support building separate functions while supporting relative and absolute imports, since SAM CLI discards the top level directory - the latter also needs additional cycles to ensure C bindings are built within a Docker Container.

   👍React with 👍3Reacted by Kristoffer Bakkejord, Ahmed Aboshanab and Marcello DeSales
3. kbakk commented on Nov 30, 2021

   

   kbakk

   on Nov 30, 2021

   Last edited by kbakk

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   You may want to look into Poetry. I'm experimenting with this currently:

   [tool.poetry]
   # ...
   packages = [
       { include = "my_app_dir", from = "functions/my_app_dir" },
       { include = "tests" }
   ]

   This creates a .pth in the site-packages folder, I believe this is similar to modifying PYTHONPATH (for the local dev-environment).

   cat $(poetry env info -p)/lib/python3.9/site-packages/my_project.pth
   ~/Code/my_project
   ~/Code/my_project/functions/my_app_dir
   

   My handler is in functions/my_app_dir/my_app_dir/lambda_handler. The double-dir is to be able to say import my_app_dir.sub_module in the Lambda handler.

     MyLogicFn:
       Type: AWS::Serverless::Function
       Properties:
         CodeUri: functions/my_app_dir
         Handler: my_app_dir.lambda_handler.create_asset
4. heitorlessa commented on Nov 30, 2021

   

   heitorlessa

   on Nov 30, 2021 via email

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   Definitely - we use Poetry for Lambda Powertools and don’t look back.

   …

   On Tue, 30 Nov 2021 at 18:59, Kristoffer Bakkejord ***@***.***> wrote: You may want to look into Poetry. I'm experimenting with this currently: [tool.poetry]# ...packages = [ { include = "my_app_dir", from = "functions/my_app_dir" }, { include = "tests" } ] This creates a .pth in the site-packages folder, I believe this is similar to modifying PYTHONPATH (for the local dev-environment). cat $(poetry env info -p)/lib/python3.9/site-packages/my_project.pth ~/Code/my_project ~/Code/my_project/functions/my_app_parent My handler is in functions/my_app_dir/my_app_dir/lambda_handler. The double-dir is to be able to say import my_app_dir.sub_module in the Lambda handler. MyLogicFn: Type: AWS::Serverless::Function Properties: CodeUri: functions/my_app_dir Handler: my_app_dir.lambda_handler.create_asset — You are receiving this because you authored the thread. Reply to this email directly, view it on GitHub <#36 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AAZPQBCWOT7JBLOECLD2YOLUOUGH7ANCNFSM4RZUGLOQ> .
5. marcellodesales commented on Sep 29, 2022

   

   marcellodesales

   on Sep 29, 2022

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   Hi @heitorlessa, do you have any update on this? I'd like to see both approaches you described at your comments...

   hey @kbakk thank you so much for that. Now that Powertools has a Router functionality, @michaelbrewer and I have been discussing revamping this with two options: Monolithic and Micro function - both with shared and Lambda Layer (build optimization + dev dependency).

   https://awslabs.github.io/aws-lambda-powertools-python/latest/core/event_handler/api_gateway/#considerations

   The monolithic option would take an hour to add since we already have a good project structure that works in both PyCharm and VSCode. The latter requires an additional CLI (e.g. PyInvoke) to support building separate functions while supporting relative and absolute imports, since SAM CLI discards the top level directory - the latter also needs additional cycles to ensure C bindings are built within a Docker Container.