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Remove intermediary /sync response struct (#102)

The logic required to populate the right bits of `RoomData` tends towards
the complete `/sync` response struct, so just use the actual response struct
and save the hassle of mapping between the two. It may not make much difference
in its current form, but the next PR will make use of this.

This PR has no functional changes.
This commit is contained in:
Kegsay 2017-05-15 15:18:08 +01:00 committed by GitHub
parent cc7117392f
commit 94e1c62745
3 changed files with 26 additions and 53 deletions

View file

@ -113,8 +113,7 @@ func (d *SyncServerDatabase) SyncStreamPosition() (types.StreamPosition, error)
}
// IncrementalSync returns all the data needed in order to create an incremental sync response.
func (d *SyncServerDatabase) IncrementalSync(userID string, fromPos, toPos types.StreamPosition, numRecentEventsPerRoom int) (data map[string]types.RoomData, returnErr error) {
data = make(map[string]types.RoomData)
func (d *SyncServerDatabase) IncrementalSync(userID string, fromPos, toPos types.StreamPosition, numRecentEventsPerRoom int) (res *types.Response, returnErr error) {
returnErr = runTransaction(d.db, func(txn *sql.Tx) error {
roomIDs, err := d.roomstate.SelectRoomIDsWithMembership(txn, userID, "join")
if err != nil {
@ -126,6 +125,8 @@ func (d *SyncServerDatabase) IncrementalSync(userID string, fromPos, toPos types
return err
}
res = types.NewResponse(toPos)
// Implement membership change algorithm: https://github.com/matrix-org/synapse/blob/v0.19.3/synapse/handlers/sync.py#L821
// - Get membership list changes for this user in this sync response
// - For each room which has membership list changes:
@ -167,35 +168,40 @@ func (d *SyncServerDatabase) IncrementalSync(userID string, fromPos, toPos types
return err
}
state[roomID] = removeDuplicates(state[roomID], recentEvents)
roomData := types.RoomData{
State: state[roomID],
RecentEvents: recentEvents,
}
data[roomID] = roomData
jr := types.NewJoinResponse()
jr.Timeline.Events = gomatrixserverlib.ToClientEvents(recentEvents, gomatrixserverlib.FormatSync)
jr.Timeline.Limited = false // TODO: if len(events) >= numRecents + 1 and then set limited:true
jr.State.Events = gomatrixserverlib.ToClientEvents(state[roomID], gomatrixserverlib.FormatSync)
res.Rooms.Join[roomID] = *jr
}
return nil
})
return
}
// CompleteSync returns all the data needed in order to create a complete sync response.
func (d *SyncServerDatabase) CompleteSync(userID string, numRecentEventsPerRoom int) (pos types.StreamPosition, data map[string]types.RoomData, returnErr error) {
data = make(map[string]types.RoomData)
// CompleteSync a complete /sync API response for the given user.
func (d *SyncServerDatabase) CompleteSync(userID string, numRecentEventsPerRoom int) (res *types.Response, returnErr error) {
// This needs to be all done in a transaction as we need to do multiple SELECTs, and we need to have
// a consistent view of the database throughout. This includes extracting the sync stream position.
// This does have the unfortunate side-effect that all the matrixy logic resides in this function,
// but it's better to not hide the fact that this is being done in a transaction.
returnErr = runTransaction(d.db, func(txn *sql.Tx) error {
// Get the current stream position which we will base the sync response on.
id, err := d.events.MaxID(txn)
if err != nil {
return err
}
pos = types.StreamPosition(id)
pos := types.StreamPosition(id)
// Extract room state and recent events for all rooms the user is joined to.
roomIDs, err := d.roomstate.SelectRoomIDsWithMembership(txn, userID, "join")
if err != nil {
return err
}
// Build up a /sync response
res = types.NewResponse(pos)
for _, roomID := range roomIDs {
stateEvents, err := d.roomstate.CurrentState(txn, roomID)
if err != nil {
@ -209,12 +215,13 @@ func (d *SyncServerDatabase) CompleteSync(userID string, numRecentEventsPerRoom
}
stateEvents = removeDuplicates(stateEvents, recentEvents)
data[roomID] = types.RoomData{
State: stateEvents,
RecentEvents: recentEvents,
}
jr := types.NewJoinResponse()
jr.Timeline.Events = gomatrixserverlib.ToClientEvents(recentEvents, gomatrixserverlib.FormatSync)
jr.Timeline.Limited = true
jr.State.Events = gomatrixserverlib.ToClientEvents(stateEvents, gomatrixserverlib.FormatSync)
res.Rooms.Join[roomID] = *jr
}
// TODO: Add invites!
return nil
})
return

View file

@ -24,7 +24,6 @@ import (
"github.com/matrix-org/dendrite/clientapi/jsonerror"
"github.com/matrix-org/dendrite/syncapi/storage"
"github.com/matrix-org/dendrite/syncapi/types"
"github.com/matrix-org/gomatrixserverlib"
"github.com/matrix-org/util"
)
@ -102,36 +101,9 @@ func (rp *RequestPool) OnIncomingSyncRequest(req *http.Request) util.JSONRespons
}
func (rp *RequestPool) currentSyncForUser(req syncRequest, currentPos types.StreamPosition) (*types.Response, error) {
if req.since == types.StreamPosition(0) {
pos, data, err := rp.db.CompleteSync(req.userID, req.limit)
if err != nil {
return nil, err
}
res := types.NewResponse(pos)
for roomID, d := range data {
jr := types.NewJoinResponse()
jr.Timeline.Events = gomatrixserverlib.ToClientEvents(d.RecentEvents, gomatrixserverlib.FormatSync)
jr.Timeline.Limited = true
jr.State.Events = gomatrixserverlib.ToClientEvents(d.State, gomatrixserverlib.FormatSync)
res.Rooms.Join[roomID] = *jr
}
return res, nil
}
// TODO: handle ignored users
data, err := rp.db.IncrementalSync(req.userID, req.since, currentPos, req.limit)
if err != nil {
return nil, err
if req.since == types.StreamPosition(0) {
return rp.db.CompleteSync(req.userID, req.limit)
}
res := types.NewResponse(currentPos)
for roomID, d := range data {
jr := types.NewJoinResponse()
jr.Timeline.Events = gomatrixserverlib.ToClientEvents(d.RecentEvents, gomatrixserverlib.FormatSync)
jr.Timeline.Limited = false // TODO: if len(events) >= numRecents + 1 and then set limited:true
jr.State.Events = gomatrixserverlib.ToClientEvents(d.State, gomatrixserverlib.FormatSync)
res.Rooms.Join[roomID] = *jr
}
return res, nil
return rp.db.IncrementalSync(req.userID, req.since, currentPos, req.limit)
}

View file

@ -28,12 +28,6 @@ func (sp StreamPosition) String() string {
return strconv.FormatInt(int64(sp), 10)
}
// RoomData represents the data for a room suitable for building a sync response from.
type RoomData struct {
State []gomatrixserverlib.Event
RecentEvents []gomatrixserverlib.Event
}
// Response represents a /sync API response. See https://matrix.org/docs/spec/client_server/r0.2.0.html#get-matrix-client-r0-sync
type Response struct {
NextBatch string `json:"next_batch"`