MIT License

Copyright (c) 2019 Robert Peteuil

Copyright (c) 2020 Robert Peteuil

Permission is hereby granted, free of charge, to any person obtaining a copy

of this software and associated documentation files (the "Software"), to deal

This function was created to address these issues:

- Many methods of creating Lambda zip files for Python functions don't work for Lambda Layers

- This is due to the fact Lambda Layers require specific library paths within the zip, where regular Lambda zips dont

- This is due to the fact Lambda Layers require specific library paths within the zip, unlike regular Lambda zip files

- Compiled dependancies must be created in an environment that matches the Lambda runtime

- Reduce size of zip file by removing unnecessary libraries and files

- Builds zip file containing Python dependancies and places the libraries into the proper directory structure for lambda layers

- Ensures compiled libraries are compatible with Lambda environment by using [docker container](https://hub.docker.com/r/lambci/lambda) that mimics the lambda runtime environment

- Optimized the zip size by removing `.pyc` files and unnecessary libraries

- allows specifying lambda supported python versions: 2.7, 3.6and 3.7

- allows specifying lambda supported python versions: 2.7, 3.6, 3.7 and 3.8

- Automatically searches for requirements.txt file in several locations:

- same directory as script

- parent directory or script (useful when used as submodule)

- parent directory of script (useful when used as submodule)

- function sub-directory of the parent directory (useful when used as submodule)

- Optionally specify Python Version

- `-p PYTHON_VER` - specifies the Python version: 2.7, 3.6, 3.7(default 3.6)

- `-p PYTHON_VER` - specifies the Python version: 2.7, 3.6, 3.7, 3.8 (default 3.7)

scriptname=$(basename "0ドル")

scriptbuildnum="1.0.0"

scriptbuilddate="2019年03月30日"

scriptbuildnum="1.0.1"

scriptbuilddate="2020年05月08日"

CURRENT_DIR=$(reldir=$(dirname -- "0ドル"; echo x); reldir=${reldir%?x}; cd -- "$reldir" && pwd && echo x); CURRENT_DIR=${CURRENT_DIR%?x}

scriptname=$(basename "0ドル")

scriptbuildnum="1.0.0"

scriptbuilddate="2019年03月30日"

scriptbuildnum="1.0.1"

scriptbuilddate="2020年05月08日"

SUBDIR_MODE=""

usage() {

[[ "1ドル" ]] && echo -e "AWS Lambda Layer Zip Builder for Python Libraries\n"

echo -e "usage: ${scriptname} [-p PYTHON_VER] [-s] [-r REQUIREMENTS-DIR] [-h] [-v]"

echo -e " -p PYTHON_VER\t: Python version to use: 2.7, 3.6, 3.7(default 3.6)"

echo -e " -p PYTHON_VER\t: Python version to use: 2.7, 3.6, 3.7, 3.8 (default 3.7)"

echo -e " -h\t\t\t: help"

echo -e " -v\t\t\t: display ${scriptname} version"

}

shift $((OPTIND-1))

PYTHON_VER="${PYTHON_VER:-3.6}"

PYTHON_VER="${PYTHON_VER:-3.7}"

CURRENT_DIR=$(reldir=$(dirname -- "0ドル"; echo x); reldir=${reldir%?x}; cd -- "$reldir" && pwd && echo x); CURRENT_DIR=${CURRENT_DIR%?x}

BASE_DIR=$(basename $CURRENT_DIR)