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Full roomserver input transactional isolation (#2141)

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* Add transaction to all database tables in roomserver, rename latest events updater to room updater, use room updater for all RS input

* Better transaction management

* Tweak order

* Handle cases where the room does not exist

* Other fixes

* More tweaks

* Fill some gaps

* Fill in the gaps

* good lord it gets worse

* Don't roll back transactions when events rejected

* Pass through errors properly

* Fix bugs

* Fix incorrect error check

* Don't panic on nil txns

* Tweaks

* Hopefully fix panics for good in SQLite this time

* Fix rollback

* Minor bug fixes with latest event updater

* Some review comments

* Revert "Some review comments"

This reverts commit 0caf8cf53e62c33f7b83c52e9df1d963871f751e.

* Fix a couple of bugs

* Clearer commit and rollback results

* Remove unnecessary prepares
This commit is contained in:
Neil Alexander 2022-02-04 10:39:34 +00:00 • committed by GitHub
parent 4d9f5b2e57
commit eb352a5f6b
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GPG key ID: 4AEE18F83AFDEB23
35 changed files with 867 additions and 499 deletions
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18
roomserver/internal/input/input_latest_events.go
View file

@ -20,7 +20,6 @@ import (
"context"
"fmt"
"github.com/matrix-org/dendrite/internal/sqlutil"
"github.com/matrix-org/dendrite/roomserver/api"
"github.com/matrix-org/dendrite/roomserver/state"
"github.com/matrix-org/dendrite/roomserver/storage/shared"
@ -48,6 +47,7 @@ import (
// Can only be called once at a time
func (r *Inputer) updateLatestEvents(
ctx context.Context,
updater *shared.RoomUpdater,
roomInfo *types.RoomInfo,
stateAtEvent types.StateAtEvent,
event *gomatrixserverlib.Event,
@ -55,13 +55,6 @@ func (r *Inputer) updateLatestEvents(
transactionID *api.TransactionID,
rewritesState bool,
) (err error) {
updater, err := r.DB.GetLatestEventsForUpdate(ctx, *roomInfo)
if err != nil {
return fmt.Errorf("r.DB.GetLatestEventsForUpdate: %w", err)
}
succeeded := false
defer sqlutil.EndTransactionWithCheck(updater, &succeeded, &err)
u := latestEventsUpdater{
ctx: ctx,
api: r,
@ -78,7 +71,6 @@ func (r *Inputer) updateLatestEvents(
return fmt.Errorf("u.doUpdateLatestEvents: %w", err)
}
succeeded = true
return
}
@ -89,7 +81,7 @@ func (r *Inputer) updateLatestEvents(
type latestEventsUpdater struct {
ctx context.Context
api *Inputer
updater *shared.LatestEventsUpdater
updater *shared.RoomUpdater
roomInfo *types.RoomInfo
stateAtEvent types.StateAtEvent
event *gomatrixserverlib.Event
@ -199,7 +191,7 @@ func (u *latestEventsUpdater) doUpdateLatestEvents() error {
func (u *latestEventsUpdater) latestState() error {
var err error
roomState := state.NewStateResolution(u.api.DB, u.roomInfo)
roomState := state.NewStateResolution(u.updater, u.roomInfo)
// Work out if the state at the extremities has actually changed
// or not. If they haven't then we won't bother doing all of the
@ -413,7 +405,7 @@ func (u *latestEventsUpdater) extraEventsForIDs(roomVersion gomatrixserverlib.Ro
if len(extraEventIDs) == 0 {
return nil, nil
}
extraEvents, err := u.api.DB.EventsFromIDs(u.ctx, extraEventIDs)
extraEvents, err := u.updater.EventsFromIDs(u.ctx, extraEventIDs)
if err != nil {
return nil, err
}
@ -436,7 +428,7 @@ func (u *latestEventsUpdater) stateEventMap() (map[types.EventNID]string, error)
stateEventNIDs = append(stateEventNIDs, entry.EventNID)
}
stateEventNIDs = stateEventNIDs[:util.SortAndUnique(eventNIDSorter(stateEventNIDs))]
return u.api.DB.EventIDs(u.ctx, stateEventNIDs)
return u.updater.EventIDs(u.ctx, stateEventNIDs)
}
type eventNIDSorter []types.EventNID