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Neil Alexander 2021-11-04 16:28:20 +00:00
parent 900adb6ad2
commit e7f7050163
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1 changed files with 15 additions and 10 deletions
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25
federationapi/routing/send.go
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@ -148,8 +148,8 @@ type inputWorker struct {
input *sendFIFOQueue
}
var txnIDs sync.Map // transaction ID -> chan util.JSONResponse
var inputWorkers sync.Map // room ID -> *inputWorker
var inFlightTxnsPerOrigin sync.Map // transaction ID -> chan util.JSONResponse
var inputWorkers sync.Map // room ID -> *inputWorker
// Send implements /_matrix/federation/v1/send/{txnID}
func Send(
@ -169,14 +169,21 @@ func Send(
// txn ID to us. If they have and the txnIDs map contains an entry,
// the transaction is still being worked on. The new client can wait
// for it to complete rather than creating more work.
index := string(request.Origin()) + string(txnID)
if v, ok := txnIDs.Load(index); ok {
index := string(request.Origin()) + "\000" + string(txnID)
ch, ok := inFlightTxnsPerOrigin.LoadOrStore(index, make(chan util.JSONResponse, 1))
if ok {
// This origin already submitted this txn ID to us, and the work
// is still taking place, so we'll just wait for it to finish.
ctx, cancel := context.WithTimeout(httpReq.Context(), time.Minute*5)
defer cancel()
select {
case <-httpReq.Context().Done():
case <-ctx.Done():
// If the caller gives up then return straight away. We don't
// want to attempt to process what they sent us any further.
return util.JSONResponse{Code: http.StatusRequestTimeout}
case res := <-v.(chan util.JSONResponse):
case res := <-ch.(chan util.JSONResponse):
// The original task just finished processing so let's return
// the result of it.
if res.Code == 0 {
return util.JSONResponse{Code: http.StatusAccepted}
}
@ -185,10 +192,8 @@ func Send(
}
// Otherwise, store that we're currently working on this txn from
// this origin. When we're done processing, close the channel.
ch := make(chan util.JSONResponse, 1)
txnIDs.Store(index, ch)
defer close(ch)
defer txnIDs.Delete(index)
defer close(ch.(chan util.JSONResponse))
defer inFlightTxnsPerOrigin.Delete(index)
t := txnReq{
rsAPI: rsAPI,