Serverless header function

Run a js file locally for every registered Serverless actions

Not compatible with Serverless 1.0.0 and above

Installation

Make sure you have Node.js v4.0+ and Serverless Framework installed Install plugin in the root level of your Serverless project

npm install --save-dev serverless-header-function

Append the plugin's name to serverless plugins list in s-project.json

plugins: [
  "serverless-header-function"
]

Current supports:

1. Running a function by a hook
2. Serially execute multiple functions. TODO: Support Async

Usage:

1. List all js path file relative to project root in s-project.json under custom.headerfunctions, the disired hook and params.

custom: {
    headerfunctions: [
      {
        path: 'lib/func-a.js',
        hook: 'function-pre-run',
        params: []
      },
      {
        path: 'src/a/b/c/function-bcde.js',
        hook: 'function-post-deploy',
        params: ['a', 1, null, true]
      }
    ]
}

2. Hooks are in the format of target-hook-action. target and hook input are mandatory. Currently supported input are:

target: enum['function','endpoint', 'event']
hook: enum['pre', 'post']
action: enum['run', 'deploy'] // only function support `run` action
params: array

3. Params will be digested in require(path).apply(params) manner. Therefore in the header function file, retrieve params by calling lexical arguments
4. The second last of the params will be the Serverless object which contains Serverless classes and actions
5. The last of the params will be the context object which contains information about the serverless action
6. Exports the file as a single function without input parameter module.exports = function () { console.log(a,b) }
7. Profit!