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Technology stack: Angular, MongoDB Stitch (for server-less backend), Firebase Hosting.

Development

• yarn install
• yarn start
• http://localhost:4100/

Then

• yarn test
• yarn e2e

Keeping MongoDB Stitch dev and prod apps in sync

MongoDB Stitch Apps are exported to stitch/*/ directories, for dev and prod environments separately. Why separately? Seems like IDs (for stitch entities) between apps must be unique, so when overriding/importing the settings, we must have old values. We could just re-import data from another environments (with strategy=replace), but that replaces all entities, incl. auth-providers. Replacing auth-provider entity results with all auth and API tokens being invalidated. That's not good. So we keep it separate and prepare import/export as we need, diffing and syncing things semi-manually.

Here's quick recipe for migrating settings from DEV to PROD env:

1. You have changes in in DEV Stitch App
2. Have all changes in the files: yarn stitch:export:dev
3. Verify it's all good there, that there's no accidental changes in roles, especially!
4. Stage/commit your changes
5. Compare/diff/select changes which you want in PROD environment.
   • you can select the two directories with stitch app configs using IDEs Compare Directories function.
   • select appropriate changes which you want to keep in sync with
   • don't override IDs during that process. They need to be kept unchanged (unless it's a new entity of course - then the import tool will generate a new ID anyway)
   • don't override production-specific settings: domain names, database names etc...
6. Stage/commit your changes (so you can spot any changes the import might do)
7. Re-create secret.json if needed (you know/kept the content somewhere safe, right?)
8. stitch:deploy:prod to import your prepared changes to PROD.
9. stitch:deploy:dev - just to check that you really have all changes kept in sync.

If you need to go the other way around, you have respective yarn commands for that too (e.g. yarn stitch:export:prod).

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