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* Client API: mutex on (user_id, room_id) * Client API: mutex on (user_id, room_id) Changed variable name used for the mutexes map Changed the place where the mutex is locked Changed unlock to a defered call instead of manually calling it
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@ -16,6 +16,7 @@ package routing
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import (
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"net/http"
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"sync"
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"github.com/matrix-org/dendrite/clientapi/httputil"
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"github.com/matrix-org/dendrite/clientapi/jsonerror"
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@ -35,6 +36,10 @@ type sendEventResponse struct {
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EventID string `json:"event_id"`
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}
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var (
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userRoomSendMutexes sync.Map // (roomID+userID) -> mutex. mutexes to ensure correct ordering of sendEvents
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)
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// SendEvent implements:
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// /rooms/{roomID}/send/{eventType}
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// /rooms/{roomID}/send/{eventType}/{txnID}
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@ -63,6 +68,13 @@ func SendEvent(
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}
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}
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// create a mutex for the specific user in the specific room
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// this avoids a situation where events that are received in quick succession are sent to the roomserver in a jumbled order
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userID := device.UserID
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mutex, _ := userRoomSendMutexes.LoadOrStore(roomID+userID, &sync.Mutex{})
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mutex.(*sync.Mutex).Lock()
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defer mutex.(*sync.Mutex).Unlock()
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e, resErr := generateSendEvent(req, device, roomID, eventType, stateKey, cfg, rsAPI)
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if resErr != nil {
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return *resErr
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