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fedsender: de-duplicate without sorting server names (#1073)

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Kegsay 2020-05-29 13:50:06 +01:00 committed by GitHub
parent 5307c499fe
commit fe5cf6f880
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2 changed files with 16 additions and 4 deletions
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1
federationsender/api/perform.go
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@ -46,6 +46,7 @@ func (h *httpFederationSenderInternalAPI) PerformDirectoryLookup(
type PerformJoinRequest struct { type PerformJoinRequest struct {
RoomID string `json:"room_id"` RoomID string `json:"room_id"`
UserID string `json:"user_id"` UserID string `json:"user_id"`
// The sorted list of servers to try. Servers will be tried sequentially, after de-duplication.
ServerNames types.ServerNames `json:"server_names"` ServerNames types.ServerNames `json:"server_names"`
Content map[string]interface{} `json:"content"` Content map[string]interface{} `json:"content"`
} }

15
federationsender/internal/perform.go
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@ -46,8 +46,19 @@ func (r *FederationSenderInternalAPI) PerformJoin(
supportedVersions = append(supportedVersions, version) supportedVersions = append(supportedVersions, version)
} }
// Deduplicate the server names we were provided. // Deduplicate the server names we were provided but keep the ordering
util.SortAndUnique(request.ServerNames) // as this encodes useful information about which servers are most likely
// to respond.
seenSet := make(map[gomatrixserverlib.ServerName]bool)
var uniqueList []gomatrixserverlib.ServerName
for _, srv := range request.ServerNames {
if seenSet[srv] {
continue
}
seenSet[srv] = true
uniqueList = append(uniqueList, srv)
}
request.ServerNames = uniqueList
// Try each server that we were provided until we land on one that // Try each server that we were provided until we land on one that
// successfully completes the make-join send-join dance. // successfully completes the make-join send-join dance.