andybee/hydrate

Architect dependency hydrator and shared file manager

@architect/hydrate

@architect/hydrate ensures that all functions managed by Architect have their dependencies installed. Functions containing all required dependencies are considered to be 'hydrated' - thus the name!

@architect/hydrate supports dependencies managed in the following languages using the following package managers:

• Node.js via npm using package.json (and optionally package-lock.json), or via yarn using package.json and yarn.lock
• Python via pip3 using a requirements.txt file
• Ruby via bundle using Gemfile and Gemfile.lock files

Installation

npm install @architect/hydrate

API

All methods accept an options object can include the following properties:

• autoinstall - Boolean - Enables or disables automated Lambda dependency treeshaking via static code analysis
  • Defaults to false
  • Used by install
• basepath - String - Filesystem path in which Hydrate should search for functions
  • Defaults the current working directory
  • Useful if you want to hydrate one function or a subset of functions
  • Used by install + update
• copyShared - Boolean - Enables or disables copying of shared code folders (e.g. src/shared) into Lambdas
  • Useful to disable if you want to just hydrate external dependencies
  • Defaults to true
  • Used by install + update
• cwd - String - Root filesystem path of the project Hydrate is working in
  • Defaults to current working directory
  • May be the same or different from basepath; if using in conjunction with basepath, specify a subset of the project with basepath, for example:
    • { cwd: '/your/project/', basepath: '/your/project/src/http/' } runs Hydrate against /your/project/ (without having to use process.chdir) and only hydrates functions within /your/project/src/http/**
  • Used by install + update + shared
• hydrateShared - Boolean - Enables or disables dependency hydration in shared code folders (e.g. src/shared)
  • Useful to disable if you want to just hydrate external dependencies
  • Defaults to true
  • Used by install + update
• inventory - Object - Architect Inventory object; generally used internally
• local - Boolean - Favor the local platform during installation of dependencies that may be distributed as platform-specific binaries
• only - String - Specify a subset of possible shared files for shared to copy into Lambdas
  • Falsy by default
  • Accepts: shared, views, or staticJson
  • Used by shared
• quiet - Boolean - Disables (most) logging
• symlink - Boolean - Enables or disables symlinking instead of full directory copying, useful for local development
  • Defaults to false
  • Used by install + update + shared
• timeout - Number - Amount of time in milliseconds to give each package manager process to execute
  • Used by install + update
• verbose - Boolean - Enables verbose logging

Note on cwd vs basepath: cwd is necessary for Hydrate to find your project's manifest and key files and folders, while basepath scopes hydration to a specific path. When in doubt, include neither parameter, Hydrate will default to process working directory; if you know you need to aim Hydrate at a specific place but aren't sure which parameter to use, use cwd.

hydrate.install(options[, callback]) → [Promise]

Installs function dependencies, then invokes hydrate.shared().

To ensure local development behavior is as close to staging and production as possible, hydrate.install() (and other hydrate functions) uses:

• Node.js: npm ci if package-lock.json is present and npm i if not; or yarn
• Python: pip3 install
• Ruby: bundle install

Note: by default update also installs dependencies in shared folders like src/shared and src/views.

hydrate.update(options[, callback]) → [Promise]

Updates function dependencies, then invokes hydrate.shared().

update is functionally almost identical to install, except it will update dependencies to newer versions if they exist. This is done via:

• Node.js: npm update or yarn upgrade
• Python: pip3 install -U --upgrade-strategy eager
• Ruby: bundle update

Note: by default update also updates dependencies in shared folders like src/shared and src/views.

hydrate.shared(options[, callback]) → [Promise]

Copies shared code (from src/shared and src/views, or your custom @shared + @views paths, if any) into all functions.