Build Node.js packages in AWS Lambda using AWS Lambda.

You can use Node packages in AWS Lambda, but they have to be built for that environment. If you're on Windows, a Mac, or just a different version of Linux, you can run into problems trying to use Node packages built on your own machine. Prior to Thaumaturgy, the best solution was to spin up an EC2 instance to rebuild the packages. That's both slow and tedious.

Now you can just use Thaumaturgy. Thaumaturgy is a command-line tool that creates and utilizes an AWS Lambda that is specifically used to build Node packages when you need them. It uses NPM under the hood.

Here's an example of what you can do:
thaumaturgy build mysql2:0.15.8 mongodb:~2.0.45 --download /tmp/mysql2.zip

Your output will look like this:

Invoking Thaumaturgy Lambda in AWS with packages mysql2:0.15.8 mongodb:~2.0.45.
Build completed successfully.
Downloading.
Download complete. File at /tmp/mysql2.zip

Thaumaturgy is a command line tool, so you'll need to install it globally.

npm install thaumaturgy -g

You'll also need a Role in AWS IAM that has the minimum permissions listed below, in the Permissions section.

The configure command will store settings in a .thaumaturgy folder in your home directory.

thaumaturgy configure

You'll be prompted for your:

• AWS Access Key
• AWS Secret Access Key
• Role ARN
• S3 Bucket (to store results)
• NPM Version (2 or 3, the output is different)

The deploy command will build the Thaumaturgy Lambda zip file and deploy it to AWS Lambda.

thaumaturgy deploy

Now you're ready to have Thaumaturgy build Node packages for you! You can pass in a list of packages, or tell it to read a package.json file. When the build is complete, Thaumaturgy stores the results in s3. However, you can tell it to automatically download it for you.

Examples:
Build one package -
thaumaturgy build mkdirp:^0.5.1

Build multiple packages -
thaumaturgy build mysql2:0.15.8 mongodb:~2.0.45

Build a package and download it when complete -
thaumaturgy build redis:latest --download /tmp/redis.zip

Build all dependencies in a package.json -
thaumaturgy build --file package.json

You Role will need the following permissions. These permissions let the Thaumaturgy Lambda store logs in AWS Cloud Watch and store build results in S3.

{
  "Version": "2012-10-17",
  "Statement": [
    {
      "Effect": "Allow",
      "Action": [
        "logs:CreateLogGroup",
        "logs:CreateLogStream",
        "logs:PutLogEvents"
      ],
      "Resource": "arn:aws:logs:*:*:*"
    },
    {
      "Effect": "Allow",
      "Action": [
        "s3:GetObject",
        "s3:PutObject"
      ],
      "Resource": [
        "arn:aws:s3:::*"
      ]
    }
  ]
}

It will also need a 'Trust Relationship' that lets AWS Lambda assume the Role:

{
  "Version": "2012-10-17",
  "Statement": [
    {
      "Sid": "",
      "Effect": "Allow",
      "Principal": {
        "Service": "lambda.amazonaws.com"
      },
      "Action": "sts:AssumeRole"
    }
  ]
}

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Copyright (c) John Titus john.titus@gmail.com

Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the 'Software'), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:

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