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Don't overwrite global err before return (#1293)

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Signed-off-by: Olivier Charvin <git@olivier.pfad.fr>
This commit is contained in:
oliverpool 2020-08-25 14:11:52 +02:00 • committed by GitHub
parent c8b873abc8
commit a4db43e096
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8 changed files with 69 additions and 64 deletions
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21
appservice/workers/transaction_scheduler.go
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@ -101,6 +101,9 @@ func worker(db storage.Database, ws types.ApplicationServiceWorkerState) {
// Backoff if the application service does not respond
err = send(client, ws.AppService, txnID, transactionJSON)
if err != nil {
log.WithFields(log.Fields{
"appservice": ws.AppService.ID,
}).WithError(err).Error("unable to send event")
// Backoff
backoff(&ws, err)
continue
@ -207,7 +210,7 @@ func send(
appservice config.ApplicationService,
txnID int,
transaction []byte,
) error {
) (err error) {
// PUT a transaction to our AS
// https://matrix.org/docs/spec/application_service/r0.1.2#put-matrix-app-v1-transactions-txnid
address := fmt.Sprintf("%s/transactions/%d?access_token=%s", appservice.URL, txnID, url.QueryEscape(appservice.HSToken))
@ -220,14 +223,7 @@ func send(
if err != nil {
return err
}
defer func() {
err := resp.Body.Close()
if err != nil {
log.WithFields(log.Fields{
"appservice": appservice.ID,
}).WithError(err).Error("unable to close response body from application service")
}
}()
defer checkNamedErr(resp.Body.Close, &err)
// Check the AS received the events correctly
if resp.StatusCode != http.StatusOK {
@ -237,3 +233,10 @@ func send(
return nil
}
// checkNamedErr calls fn and overwrite err if it was nil and fn returned non-nil
func checkNamedErr(fn func() error, err *error) {
if e := fn(); e != nil && *err == nil {
*err = e
}
}