Add a very basic /initialSync implementation

This is done by coercing a full sync response into the right shape.

Some notable TODOs:

- Support specifying a limt
- Support invites
- Correctly format events
- Add presence, account data, etc

src/github.com/matrix-org/dendrite/clientapi/routing/routing.go

@@ -352,23 +352,4 @@ func Setup(
 			return util.JSONResponse{Code: 200, JSON: struct{}{}}
 		}),
 	).Methods("PUT", "OPTIONS")
-
-	// Stub implementations for sytest
-	r0mux.Handle("/events",
-		common.MakeExternalAPI("events", func(req *http.Request) util.JSONResponse {
-			return util.JSONResponse{Code: 200, JSON: map[string]interface{}{
-				"chunk": []interface{}{},
-				"start": "",
-				"end":   "",
-			}}
-		}),
-	).Methods("GET")
-
-	r0mux.Handle("/initialSync",
-		common.MakeExternalAPI("initial_sync", func(req *http.Request) util.JSONResponse {
-			return util.JSONResponse{Code: 200, JSON: map[string]interface{}{
-				"end": "",
-			}}
-		}),
-	).Methods("GET")
 }

src/github.com/matrix-org/dendrite/cmd/dendrite-monolith-server/main.go

@@ -336,7 +336,7 @@ func (m *monolith) setupAPIs() {
 
 	syncapi_routing.Setup(m.api, syncapi_sync.NewRequestPool(
 		m.syncAPIDB, m.syncAPINotifier, m.accountDB,
-	), m.deviceDB)
+	), m.deviceDB, m.syncAPIDB)
 
 	federationapi_routing.Setup(
 		m.api, *m.cfg, m.queryAPI, m.roomServerProducer, m.keyRing, m.federation,

src/github.com/matrix-org/dendrite/cmd/dendrite-sync-api-server/main.go

@@ -104,7 +104,7 @@ func main() {
 	log.Info("Starting sync server on ", cfg.Listen.SyncAPI)
 
 	api := mux.NewRouter()
-	routing.Setup(api, sync.NewRequestPool(db, n, adb), deviceDB)
+	routing.Setup(api, sync.NewRequestPool(db, n, adb), deviceDB, db)
 	common.SetupHTTPAPI(http.DefaultServeMux, api)
 
 	log.Fatal(http.ListenAndServe(string(cfg.Listen.SyncAPI), nil))

src/github.com/matrix-org/dendrite/syncapi/routing/routing.go

@@ -21,6 +21,7 @@ import (
 	"github.com/matrix-org/dendrite/clientapi/auth/authtypes"
 	"github.com/matrix-org/dendrite/clientapi/auth/storage/devices"
 	"github.com/matrix-org/dendrite/common"
+	"github.com/matrix-org/dendrite/syncapi/storage"
 	"github.com/matrix-org/dendrite/syncapi/sync"
 	"github.com/matrix-org/util"
 )
@@ -28,7 +29,12 @@ import (
 const pathPrefixR0 = "/_matrix/client/r0"
 
 // Setup configures the given mux with sync-server listeners
-func Setup(apiMux *mux.Router, srp *sync.RequestPool, deviceDB *devices.Database) {
+func Setup(
+	apiMux *mux.Router,
+	srp *sync.RequestPool,
+	deviceDB *devices.Database,
+	syncDB *storage.SyncServerDatabase,
+) {
 	r0mux := apiMux.PathPrefix(pathPrefixR0).Subrouter()
 
 	r0mux.Handle("/sync", common.MakeAuthAPI("sync", deviceDB, func(req *http.Request, device *authtypes.Device) util.JSONResponse {
@@ -39,4 +45,23 @@ func Setup(apiMux *mux.Router, srp *sync.RequestPool, deviceDB *devices.Database
 		vars := mux.Vars(req)
 		return srp.OnIncomingStateRequest(req, vars["roomID"])
 	})).Methods("GET")
+
+	// Stub implementations for sytest
+	r0mux.Handle("/events",
+		common.MakeExternalAPI("events", func(req *http.Request) util.JSONResponse {
+			return util.JSONResponse{Code: 200, JSON: map[string]interface{}{
+				"chunk": []interface{}{},
+				"start": "",
+				"end":   "",
+			}}
+		}),
+	).Methods("GET")
+
+	r0mux.Handle("/initialSync",
+		common.MakeAuthAPI("initial_sync", deviceDB, func(req *http.Request, device *authtypes.Device) util.JSONResponse {
+			return sync.GetInitialSync(
+				req, device, syncDB,
+			)
+		}),
+	).Methods("GET")
 }

src/github.com/matrix-org/dendrite/syncapi/sync/intitial_sync.go

@@ -0,0 +1,93 @@
+// Copyright 2017 Vector Creations Ltd
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package sync
+
+import (
+	"net/http"
+
+	"github.com/matrix-org/dendrite/clientapi/auth/authtypes"
+	"github.com/matrix-org/dendrite/clientapi/httputil"
+	"github.com/matrix-org/dendrite/syncapi/storage"
+	"github.com/matrix-org/dendrite/syncapi/types"
+	"github.com/matrix-org/gomatrixserverlib"
+	"github.com/matrix-org/util"
+)
+
+// GetInitialSync gets called on an /initialSync request.
+func GetInitialSync(
+	req *http.Request, device *authtypes.Device,
+	db *storage.SyncServerDatabase,
+) util.JSONResponse {
+	// TODO: Support limit
+	syncResponse, err := db.CompleteSync(
+		req.Context(), device.UserID, DefaultTimelineLimit,
+	)
+
+	if err != nil {
+		return httputil.LogThenError(req, err)
+	}
+
+	intialSyncResponse := syncResponseToIntialSync(syncResponse)
+
+	return util.JSONResponse{
+		Code: 200,
+		JSON: intialSyncResponse,
+	}
+}
+
+func syncResponseToIntialSync(syncResponse *types.Response) initialSyncResponse {
+	var rooms []initialSyncRoomResponse
+
+	for roomID, room := range syncResponse.Rooms.Join {
+		rooms = append(rooms, initialSyncRoomResponse{
+			RoomID:     roomID,
+			Membership: "join",
+
+			Messages: initialSyncChunk{
+				Chunk: room.Timeline.Events,    // TODO: Correctly format events
+				End:   room.Timeline.PrevBatch, // TODO: Start?
+			},
+
+			State: initialSyncChunk{
+				Chunk: room.State.Events, // TODO: Add state from timeline
+			},
+		})
+	}
+
+	// TODO: Invites, leaves, account data, presence, etc.
+
+	return initialSyncResponse{
+		Rooms: rooms,
+		End:   syncResponse.NextBatch,
+	}
+}
+
+type initialSyncResponse struct {
+	End   string                    `json:"end"`
+	Rooms []initialSyncRoomResponse `json:"rooms"`
+}
+
+type initialSyncRoomResponse struct {
+	Membership string           `json:"membership"`
+	RoomID     string           `json:"room_id"`
+	Messages   initialSyncChunk `json:"messages,omitempty"`
+	State      initialSyncChunk `json:"state,omitempty"`
+}
+
+type initialSyncChunk struct {
+	Start string                          `json:"start"`
+	End   string                          `json:"end"`
+	Chunk []gomatrixserverlib.ClientEvent `json:"chunk"`
+}

src/github.com/matrix-org/dendrite/syncapi/sync/notifier_test.go

@@ -286,7 +286,7 @@ func newTestSyncRequest(userID string, since types.StreamPosition) syncRequest {
 		timeout:       1 * time.Minute,
 		since:         since,
 		wantFullState: false,
-		limit:         defaultTimelineLimit,
+		limit:         DefaultTimelineLimit,
 		log:           util.GetLogger(context.TODO()),
 	}
 }

src/github.com/matrix-org/dendrite/syncapi/sync/request.go

@@ -26,7 +26,10 @@ import (
 )
 
 const defaultSyncTimeout = time.Duration(30) * time.Second
-const defaultTimelineLimit = 20
+
+// DefaultTimelineLimit is the default number limit of timeline entries if no
+// limit was given.
+const DefaultTimelineLimit = 20
 
 // syncRequest represents a /sync request, with sensible defaults/sanity checks applied.
 type syncRequest struct {
@@ -54,7 +57,7 @@ func newSyncRequest(req *http.Request, userID string) (*syncRequest, error) {
 		timeout:       timeout,
 		since:         since,
 		wantFullState: wantFullState,
-		limit:         defaultTimelineLimit, // TODO: read from filter
+		limit:         DefaultTimelineLimit, // TODO: read from filter
 		log:           util.GetLogger(req.Context()),
 	}, nil
 }