Cloud Functions Config from GCS

Configure your cloud functions with a per-project (per-env) secret JSON file hosted on GCS

Background

In the GCP docs it is implied that you should set up one project per environment:

We recommend that you spend some time planning your project IDs for manageability. A typical project ID naming convention might use the following pattern:

[company tag]-[group tag]-[system name]-[environment (dev, test, uat, stage, prod)]

Method

1. cloud-functions-config uses process.env.GCP_PROJECT to find out which bucket to fetch the config from.
2. once the config.json file has been fetched the JSON key-values are added to process.env under keys prefixed with cfc__).

Prerequisites

• a GCS bucket named [project-ID]-config-private that your cloud functions has permission to read from (this should be enabled by default)
• a file config.json stored within the above bucket

Usage

npm i cloud-functions-config

const { initConfig, getConfig } = require('cloud-functions-config')

// initConfig will only requests config from GCS if none has been set yet
initConfig()
  .then(config => {
      // app logic
      console.log(config)
      // { token: 'xxxxxx', ... } 
    })