## Context
While deploying the IS_NEW_RELATION_ENABLED (we don't compute relation
based on relationMetadata anymore) to existing workspace, I've tested to
run a sync-metadata post feature flag activation. This has raised two
issues:
- the workspaceMigration generator (which is over-complex and should be
refactored later) for fieldMetadata of type RELATION was not handling
settings update properly ;
- we need to delete existing fieldMetadata corresponding to the UUID
foreignKey as they are not needed anymore. This is handled as a 0.53
upgrade command as 0.53 will also come with the full removal of the old
relation system
---------
Co-authored-by: Etienne <45695613+etiennejouan@users.noreply.github.com>
Co-authored-by: prastoin <paul@twenty.com>
## Architecture Detail
The goal is to merge the two TypeORM schemas.
Having two schemas prevent doing things like fieldMetadata.workspace in
TypeORM, and create useless debates since there is no clear line (is a
serverlessFunction core or metadata? What about events? etc.)
### Before
```
┌───────────────────┐ ┌───────────────────┐
│ core schema │ │ metadata schema │
├───────────────────┤ ├───────────────────┤
│- User │ │- ObjectMetadata │
│- Workspace │ │- FieldMetadata │
│- UserWorkspace │ │- RelationMetadata │
│- etc. │ │- etc. │
└───────────────────┘ └───────────────────┘
```
### After the Migration
```
┌───────────────────────────────────────────┐
│ engine schema │
├───────────────────────────────────────────┤
│- User - ObjectMetadata │
│- Workspace - FieldMetadata │
│- UserWorkspace - RelationMetadata │
│- etc. - etc. │
└───────────────────────────────────────────┘
```
## Strategy
1. During 0.53 we backfill the *_typeorm_migrations* table of the core
schema with all metadata migrations
2. That way in 0.54 we can move the metadata migrations from the
metadata folder to the core folder. We will also edit the migration
files to reference "core" instead of "metadata". For people doing a
fresh install this will run smoothly and create the tables in Core
directly. For people on an existing install, this migrations will not
run because they were added to the *_typeorm_migrations* in 0.53
3. In 0.55 we will rename "core" to something else (for example
"engine")
Note: if someone jumps version, for example skips to 0.54 directly
without having run 0.53 then this could cause issue. In 0.54 we should
consider gating the "migrate:prod" in the docker file so that it's
controlled and run by the upgrade command (and not run if the command
wasn't executed properly)
