50 lines
1.1 KiB
Go
50 lines
1.1 KiB
Go
package lmdb
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import (
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"context"
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"encoding/hex"
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"fmt"
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"github.com/PowerDNS/lmdb-go/lmdb"
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"github.com/fiatjaf/eventstore"
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"github.com/nbd-wtf/go-nostr"
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nostr_binary "github.com/nbd-wtf/go-nostr/binary"
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)
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func (b *LMDBBackend) SaveEvent(ctx context.Context, evt *nostr.Event) error {
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// sanity checking
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if evt.CreatedAt > maxuint32 || evt.Kind > maxuint16 {
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return fmt.Errorf("event with values out of expected boundaries")
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}
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return b.lmdbEnv.Update(func(txn *lmdb.Txn) error {
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// check if we already have this id
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id, _ := hex.DecodeString(evt.ID)
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_, err := txn.Get(b.indexId, id)
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if operr, ok := err.(*lmdb.OpError); ok && operr.Errno != lmdb.NotFound {
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// we will only proceed if we get a NotFound
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return eventstore.ErrDupEvent
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}
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// encode to binary form so we'll save it
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bin, err := nostr_binary.Marshal(evt)
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if err != nil {
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return err
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}
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idx := b.Serial()
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// raw event store
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if err := txn.Put(b.rawEventStore, idx, bin, 0); err != nil {
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return err
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}
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for _, k := range b.getIndexKeysForEvent(evt) {
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if err := txn.Put(k.dbi, k.key, idx, 0); err != nil {
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return err
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}
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}
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return nil
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})
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}
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