manifold/functions
Marshall Polaris 98c5329e03
Fix up API CORS header processing (#277)
* Fix ultra embarrassing bug not restricting CORS origins

* Put CORS origin regexps in common

* Static types so I don't muck it up again

* Fixup CORS regex to be more strict

* Fix sloppy imports to actually work
2022-05-20 19:34:26 -07:00
..
src Fix up API CORS header processing (#277) 2022-05-20 19:34:26 -07:00
.gitignore Separate free response answers & comments (#100) 2022-04-26 07:24:57 -06:00
package.json Implement onRequest versions of createContract, placeBet functions (#227) 2022-05-16 21:43:40 -07:00
README.md Readme: must be in dev for emulators to work 2022-04-28 12:29:02 -06:00
tsconfig.json More absolute imports (#156) 2022-05-09 09:04:36 -04:00

NOTE: Adapted from One Word's /functions doc. Fix any errors you see!

Firestore Cloud Functions

This is code that doesn't make sense on the frontend client, e.g.

  • Long-running or slow operation (database)
  • Tasks that need to be run every so often (syncing email list to Mailjet)
  • Anything we should't trust to clients (secrets, auth)

If you want to make and test changes, you'll have to do a bit of setup...

Installing

Adapted from https://firebase.google.com/docs/functions/get-started

  1. $ cd functions to switch to this folder
  2. $ yarn global add firebase-tools to install the Firebase CLI globally
  3. $ yarn to install JS dependencies
  4. $ firebase login to authenticate the CLI tools to Firebase
  5. $ firebase use dev to choose the dev project

For local development

  1. $ firebase functions:config:get > .runtimeconfig.json to cache secrets for local dev
  2. Install gcloud CLI
  3. $ brew install java to install java if you don't already have it
    1. $ echo 'export PATH="/usr/local/opt/openjdk/bin:$PATH"' >> ~/.zshrc to add java to your path
  4. $ gcloud auth login to authenticate the CLI tools to Google Cloud
  5. $ gcloud config set project <project-id> to choose the project ($ gcloud projects list to see options)
  6. $ mkdir firestore_export to create a folder to store the exported database
  7. $ yarn db:update-local-from-remote to pull the remote db from Firestore to local
    1. TODO: this won't work when open source, we'll have to point to the public db

Developing locally

  1. $ firebase use dev if you haven't already
  2. $ yarn serve to spin up the emulators
    1. The Emulator UI is at http://localhost:4000; the functions are hosted on :5001. Note: You have to kill and restart emulators when you change code; no hot reload =(
  3. $ yarn dev:emulate in /web to connect to emulators with the frontend
    1. Note: emulated database is cleared after every shutdown

Firestore Commands

  • db:update-local-from-remote - Pull the remote db from Firestore to local, also calls:
    • db:backup-remote - Exports the remote dev db to the backup folder on Google Cloud Storage (called on every db:update-local-from-remote)
    • db:rename-remote-backup-folder - Renames the remote backup folder (called on every db:backup-remote to preserve the previous db backup)
  • db:backup-local - Save the local db changes to the disk (overwrites existing)

Debugging

  • Find local logs directly in the shell that ran $ yarn dev
  • Find deployed logs here

Deploying

  1. $ firebase use prod to switch to prod
  2. $ yarn deploy to push your changes live! (Future TODO: auto-deploy functions on Git push)

Secrets management

Secrets are strings that shouldn't be checked into Git (eg API keys, passwords). We store these using environment config on Firebase Functions. Some useful workflows:

  • Set a secret: $ firebase functions:config:set stripe.test_secret="THE-API-KEY"
  • Preview all secrets: $ firebase functions:config:get
  • Cache for local dev:$ firebase functions:config:get > .runtimeconfig.json