Summary:
Until now, we've been hiding transactions beneath the surface. When you call persistModel, you're implicitly creating a transaction.
You could explicitly create them with `atomically`..., but there were several critical problems that are fixed in this diff:
- Calling persistModel / unpersistModel within a transaction could cause the DatabaseStore to trigger. This could result in other parts of the app making queries /during/
the transaction, potentially before the COMMIT occurred and saved the changes. The new, explicit inTransaction syntax holds all changes until after COMMIT and then triggers.
- Calling atomically and then calling persistModel inside that resulted in us having to check whether a transaction was present and was gross.
- Many parts of the code ran extensive logic inside a promise chained within `atomically`:
BAD:
```
DatabaseStore.atomically =>
DatabaseStore.persistModel(draft) =>
GoMakeANetworkRequestThatReturnsAPromise
```
OVERWHELMINGLY BETTER:
```
DatabaseStore.inTransaction (t) =>
t.persistModel(draft)
.then =>
GoMakeANetworkRequestThatReturnsAPromise
```
Having explicit transactions also puts us on equal footing with Sequelize and other ORMs. Note that you /have/ to call DatabaseStore.inTransaction (t) =>. There is no other way to access the methods that let you alter the database. :-)
Other changes:
- This diff removes Message.labels and the Message-Labels table. We weren't using Message-level labels anywhere, and the table could grow very large.
- This diff changes the page size during initial sync from 250 => 200 in an effort to make transactions a bit faster.
Test Plan: Run tests!
Reviewers: juan, evan
Reviewed By: juan, evan
Differential Revision: https://phab.nylas.com/D2353
Summary:
Move sync workers and Edgehill token checks to work window
Move the task queue and database setup to the work window
Move ContactStore background refresh to work window
Store the task queue in the database
WIP
The TaskQueue now puts tasks in the database instead of in a file, which also means it can be observed
Move all delta sync and initial sync to a package, make NylasSyncStore which exposes read-only sync state
DraftStore no longer reads task status. Once you set the "sending" bit on a draft, it never gets unset. But that's fine actually.
If your package lists windowTypes, you *only* get loaded in those windowTypes. If you specify no windowTypes, you get loaded in the root window.
This means that onboarding, worker-ui, worker-sync, etc. no longer get loaded into the main window
ActivitySidebar has a special little store that observes the task queue since it's no longer in the window
Move "toggle component regions" / "toggle react remote" to the Developer menu
Move sync worker specs, update draft store specs to not rely on TaskQueue at all
Test Plan: Run existing tests, all pass
Reviewers: dillon, evan
Reviewed By: evan
Differential Revision: https://phab.nylas.com/D1936
