gotosocial/internal/transport/deliver.go

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/*
GoToSocial
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Copyright (C) 2021-2022 GoToSocial Authors admin@gotosocial.org
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU Affero General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU Affero General Public License for more details.
You should have received a copy of the GNU Affero General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
package transport
import (
"context"
"fmt"
"net/url"
"strings"
"sync"
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"github.com/sirupsen/logrus"
"github.com/spf13/viper"
"github.com/superseriousbusiness/gotosocial/internal/config"
)
func (t *transport) BatchDeliver(ctx context.Context, b []byte, recipients []*url.URL) error {
// concurrently deliver to recipients; for each delivery, buffer the error if it fails
wg := sync.WaitGroup{}
errCh := make(chan error, len(recipients))
for _, recipient := range recipients {
wg.Add(1)
go func(r *url.URL) {
defer wg.Done()
if err := t.Deliver(ctx, b, r); err != nil {
errCh <- err
}
}(recipient)
}
// wait until all deliveries have succeeded or failed
wg.Wait()
// receive any buffered errors
errs := make([]string, 0, len(recipients))
outer:
for {
select {
case e := <-errCh:
errs = append(errs, e.Error())
default:
break outer
}
}
if len(errs) > 0 {
return fmt.Errorf("BatchDeliver: at least one failure: %s", strings.Join(errs, "; "))
}
return nil
}
func (t *transport) Deliver(ctx context.Context, b []byte, to *url.URL) error {
// if the 'to' host is our own, just skip this delivery since we by definition already have the message!
if to.Host == viper.GetString(config.Keys.Host) || to.Host == viper.GetString(config.Keys.AccountDomain) {
return nil
}
logrus.Debugf("Deliver: posting as %s to %s", t.pubKeyID, to.String())
return t.sigTransport.Deliver(ctx, b, to)
}