dendrite/federationsender/internal/api.go

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package internal
import (
"context"
"time"
"github.com/matrix-org/dendrite/federationsender/api"
"github.com/matrix-org/dendrite/federationsender/queue"
"github.com/matrix-org/dendrite/federationsender/statistics"
"github.com/matrix-org/dendrite/federationsender/storage"
"github.com/matrix-org/dendrite/internal/config"
roomserverAPI "github.com/matrix-org/dendrite/roomserver/api"
"github.com/matrix-org/gomatrix"
"github.com/matrix-org/gomatrixserverlib"
)
// FederationSenderInternalAPI is an implementation of api.FederationSenderInternalAPI
type FederationSenderInternalAPI struct {
db storage.Database
cfg *config.FederationSender
statistics *statistics.Statistics
rsAPI roomserverAPI.RoomserverInternalAPI
federation *gomatrixserverlib.FederationClient
keyRing *gomatrixserverlib.KeyRing
queues *queue.OutgoingQueues
}
func NewFederationSenderInternalAPI(
db storage.Database, cfg *config.FederationSender,
rsAPI roomserverAPI.RoomserverInternalAPI,
federation *gomatrixserverlib.FederationClient,
keyRing *gomatrixserverlib.KeyRing,
statistics *statistics.Statistics,
queues *queue.OutgoingQueues,
) *FederationSenderInternalAPI {
return &FederationSenderInternalAPI{
db: db,
cfg: cfg,
rsAPI: rsAPI,
federation: federation,
keyRing: keyRing,
statistics: statistics,
queues: queues,
}
}
func (a *FederationSenderInternalAPI) isBlacklistedOrBackingOff(s gomatrixserverlib.ServerName) (*statistics.ServerStatistics, error) {
stats := a.statistics.ForServer(s)
until, blacklisted := stats.BackoffInfo()
if blacklisted {
return stats, &api.FederationClientError{
Blacklisted: true,
}
}
now := time.Now()
if until != nil && now.Before(*until) {
return stats, &api.FederationClientError{
RetryAfter: time.Until(*until),
}
}
return stats, nil
}
func failBlacklistableError(err error, stats *statistics.ServerStatistics) (until time.Time, blacklisted bool) {
if err == nil {
return
}
mxerr, ok := err.(gomatrix.HTTPError)
if !ok {
return stats.Failure()
}
if mxerr.Code >= 500 && mxerr.Code < 600 {
return stats.Failure()
}
return
}
func (a *FederationSenderInternalAPI) doRequest(
s gomatrixserverlib.ServerName, request func() (interface{}, error),
) (interface{}, error) {
stats, err := a.isBlacklistedOrBackingOff(s)
if err != nil {
return nil, err
}
res, err := request()
if err != nil {
until, blacklisted := failBlacklistableError(err, stats)
now := time.Now()
var retryAfter time.Duration
if until.After(now) {
retryAfter = time.Until(until)
}
return res, &api.FederationClientError{
Err: err.Error(),
Blacklisted: blacklisted,
RetryAfter: retryAfter,
}
}
stats.Success()
return res, nil
}
func (a *FederationSenderInternalAPI) GetUserDevices(
ctx context.Context, s gomatrixserverlib.ServerName, userID string,
) (gomatrixserverlib.RespUserDevices, error) {
ires, err := a.doRequest(s, func() (interface{}, error) {
return a.federation.GetUserDevices(ctx, s, userID)
})
if err != nil {
return gomatrixserverlib.RespUserDevices{}, err
}
return ires.(gomatrixserverlib.RespUserDevices), nil
}
func (a *FederationSenderInternalAPI) ClaimKeys(
ctx context.Context, s gomatrixserverlib.ServerName, oneTimeKeys map[string]map[string]string,
) (gomatrixserverlib.RespClaimKeys, error) {
ires, err := a.doRequest(s, func() (interface{}, error) {
return a.federation.ClaimKeys(ctx, s, oneTimeKeys)
})
if err != nil {
return gomatrixserverlib.RespClaimKeys{}, err
}
return ires.(gomatrixserverlib.RespClaimKeys), nil
}
func (a *FederationSenderInternalAPI) QueryKeys(
ctx context.Context, s gomatrixserverlib.ServerName, keys map[string][]string,
) (gomatrixserverlib.RespQueryKeys, error) {
ires, err := a.doRequest(s, func() (interface{}, error) {
return a.federation.QueryKeys(ctx, s, keys)
})
if err != nil {
return gomatrixserverlib.RespQueryKeys{}, err
}
return ires.(gomatrixserverlib.RespQueryKeys), nil
}