lapa

(Almost) universal AWS Lambda packager. It generates zip archive ready for uploading on AWS with no pain using just a simple config file.

Supports node and python out of the box, can be customised for other environments.

Usage

Installation

manual

curl https://raw.githubusercontent.com/nogizhopaboroda/lapa/master/packer.py -o /usr/local/bin/lapa && chmod +x /usr/local/bin/lapa

with npm

npm i -g https://github.com/nogizhopaboroda/lapa

as a local npm dependency

npm i --save-dev https://github.com/nogizhopaboroda/lapa

then in package.json:

{
  ...
  "scripts": {
    "pack": "lapa"
  }
  ...
}

Usage directly from github

python <(curl https://raw.githubusercontent.com/nogizhopaboroda/lapa/master/packer.py) [arguments]

Configuration

Config file

A config file is either plain json file (packer.config.json) or js module (packer.config.js) that exports configuration object placed within project directory.

example packer.config.json:

{
  "environment": "python",
  "files": ["*.py", "*.ini"],
  "ignore": ["lib/*", "bin/*"],
  "dependencies": ["requests"],
  "zipName": "./dist/my-lambda.zip"
}

example packer.config.js:

//packer.config.js

//js configs are treated as regular js modules,
//so you can use variables, require another modules and so on
const common = {
  "environment": "node",
  "files": "*",
  "ignore": ["node_modules/*"]
}

module.exports = [
  {
    ...common,
    "dependencyFile": "package.json",
    "zipName": "./dist/my-lambda.zip"
  },
  {
    ...common,
    "dependencyFile": "edge.package.json",
    "zipName": "./dist/my-edge-lambda.zip"
  },
]

Configuration object

{ //can be an array (for multiple builds)
  "environment": <String|Object>,

  //optional fields
  "files": <String|Array>,
  "ignore": <String|Array>,
  "dependencyFile": <String>,
  "dependencies": <String|Array>,
  "zipName": <String>,
  "mapDirectories": <Object>
}

Required fields

environment:

environment to use when install dependencies. So far only node and python are supperted.

Can also be an object of dependencies installation instructions. In such case:

{
  "environment": {
    "installDependencies": "some-bundler install {dependencies}",
    "installDependencyFile": [
      "some-bundler install {dependencyFile}"
    ],
  }
}

where

{dependencies} - space-separated dependencies from config object

{dependencyFile} - dependency file from config object

Optional fields

files (Default: [*]):

file/directory masks to include to archive

ignore (Default: []):

file/directory masks to ignore

dependencyFile:

file to use as a dependency file

dependencies (Default: []):

list of dependencies

zipName (Default: lambda.zip):

output archive name

mapDirectories:

Change file directory in resulting archive. Example:

{
  //  src/a.js -> a.js
  //  b.js     -> b.js
  "mapDirectories": {
    "src": "./"
  }
}

Generate a basic configuration file

You can create config file in interactive mode

lapa --init

App will ask you several questions and try to guess you environment based on most common files type

Run

within project directory simply run:

lapa

Examples

• simple python project
• simple node project
• node project with 2 configs (lambda + edge)
• simple python project with requirements.txt

Troubleshooting

Pip can't install dependencies in specific directory

It's known issue if your pip is installed via brew. As a workaround just copy this setup.cfg file in your project on root level as in this example

Requirements

python >= 2