gotosocial/internal/federation/federatingdb/announce.go

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/*
GoToSocial
Copyright (C) 2021 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 federatingdb
import (
"context"
"encoding/json"
"fmt"
"github.com/go-fed/activity/streams"
"github.com/go-fed/activity/streams/vocab"
"github.com/sirupsen/logrus"
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"github.com/superseriousbusiness/gotosocial/internal/ap"
"github.com/superseriousbusiness/gotosocial/internal/gtsmodel"
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"github.com/superseriousbusiness/gotosocial/internal/messages"
"github.com/superseriousbusiness/gotosocial/internal/util"
)
func (f *federatingDB) Announce(ctx context.Context, announce vocab.ActivityStreamsAnnounce) error {
l := f.log.WithFields(
logrus.Fields{
"func": "Announce",
},
)
m, err := streams.Serialize(announce)
if err != nil {
return err
}
b, err := json.Marshal(m)
if err != nil {
return err
}
l.Debugf("received ANNOUNCE %s", string(b))
targetAcctI := ctx.Value(util.APAccount)
if targetAcctI == nil {
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// If the target account wasn't set on the context, that means this request didn't pass through the
// API, but came from inside GtS as the result of another activity on this instance. That being so,
// we can safely just ignore this activity, since we know we've already processed it elsewhere.
return nil
}
targetAcct, ok := targetAcctI.(*gtsmodel.Account)
if !ok {
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l.Error("ANNOUNCE: target account was set on context but couldn't be parsed")
return nil
}
fromFederatorChanI := ctx.Value(util.APFromFederatorChanKey)
if fromFederatorChanI == nil {
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l.Error("ANNOUNCE: from federator channel wasn't set on context")
return nil
}
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fromFederatorChan, ok := fromFederatorChanI.(chan messages.FromFederator)
if !ok {
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l.Error("ANNOUNCE: from federator channel was set on context but couldn't be parsed")
return nil
}
boost, isNew, err := f.typeConverter.ASAnnounceToStatus(ctx, announce)
if err != nil {
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return fmt.Errorf("ANNOUNCE: error converting announce to boost: %s", err)
}
if !isNew {
// nothing to do here if this isn't a new announce
return nil
}
// it's a new announce so pass it back to the processor async for dereferencing etc
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fromFederatorChan <- messages.FromFederator{
APObjectType: ap.ActivityAnnounce,
APActivityType: ap.ActivityCreate,
GTSModel: boost,
ReceivingAccount: targetAcct,
}
return nil
}