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// 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 input
import (
"context"
"encoding/json"
"net/http"
"time"
"github.com/Shopify/sarama"
"github.com/gorilla/mux"
"github.com/matrix-org/dendrite/eduserver/api"
"github.com/matrix-org/dendrite/eduserver/cache"
"github.com/matrix-org/dendrite/internal"
"github.com/matrix-org/gomatrixserverlib"
"github.com/matrix-org/util"
)
// EDUServerInputAPI implements api.EDUServerInputAPI
type EDUServerInputAPI struct {
// Cache to store the current typing members in each room.
Cache *cache.EDUCache
// The kafka topic to output new typing events to.
OutputTypingEventTopic string
// kafka producer
Producer sarama.SyncProducer
}
// InputTypingEvent implements api.EDUServerInputAPI
func (t *EDUServerInputAPI) InputTypingEvent(
ctx context.Context,
request *api.InputTypingEventRequest,
response *api.InputTypingEventResponse,
) error {
ite := &request.InputTypingEvent
if ite.Typing {
// user is typing, update our current state of users typing.
expireTime := ite.OriginServerTS.Time().Add(
time.Duration(ite.TimeoutMS) * time.Millisecond,
)
t.Cache.AddTypingUser(ite.UserID, ite.RoomID, &expireTime)
} else {
t.Cache.RemoveUser(ite.UserID, ite.RoomID)
}
return t.sendEvent(ite)
}
func (t *EDUServerInputAPI) sendEvent(ite *api.InputTypingEvent) error {
ev := &api.TypingEvent{
Type: gomatrixserverlib.MTyping,
RoomID: ite.RoomID,
UserID: ite.UserID,
Typing: ite.Typing,
}
ote := &api.OutputTypingEvent{
Event: *ev,
}
if ev.Typing {
expireTime := ite.OriginServerTS.Time().Add(
time.Duration(ite.TimeoutMS) * time.Millisecond,
)
ote.ExpireTime = &expireTime
}
eventJSON, err := json.Marshal(ote)
if err != nil {
return err
}
m := &sarama.ProducerMessage{
Topic: string(t.OutputTypingEventTopic),
Key: sarama.StringEncoder(ite.RoomID),
Value: sarama.ByteEncoder(eventJSON),
}
_, _, err = t.Producer.SendMessage(m)
return err
}
// SetupHTTP adds the EDUServerInputAPI handlers to the http.ServeMux.
func (t *EDUServerInputAPI) SetupHTTP(internalAPIMux *mux.Router) {
internalAPIMux.Handle(api.EDUServerInputTypingEventPath,
internal.MakeInternalAPI("inputTypingEvents", func(req *http.Request) util.JSONResponse {
var request api.InputTypingEventRequest
var response api.InputTypingEventResponse
if err := json.NewDecoder(req.Body).Decode(&request); err != nil {
return util.MessageResponse(http.StatusBadRequest, err.Error())
}
if err := t.InputTypingEvent(req.Context(), &request, &response); err != nil {
return util.ErrorResponse(err)
}
return util.JSONResponse{Code: http.StatusOK, JSON: &response}
}),
)
}
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