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interface.go
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interface.go
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package nostr
import (
"context"
"errors"
"slices"
)
type RelayStore interface {
Publish(ctx context.Context, event Event) error
QuerySync(ctx context.Context, filter Filter, opts ...SubscriptionOption) ([]*Event, error)
}
var (
_ RelayStore = (*Relay)(nil)
_ RelayStore = (*MultiStore)(nil)
)
type MultiStore []RelayStore
func (multi MultiStore) Publish(ctx context.Context, event Event) error {
errs := make([]error, len(multi))
for i, s := range multi {
errs[i] = s.Publish(ctx, event)
}
return errors.Join(errs...)
}
func (multi MultiStore) QuerySync(ctx context.Context, filter Filter, opts ...SubscriptionOption) ([]*Event, error) {
errs := make([]error, len(multi))
events := make([]*Event, 0, max(filter.Limit, 10))
for i, s := range multi {
res, err := s.QuerySync(ctx, filter, opts...)
errs[i] = err
events = append(events, res...)
}
slices.SortFunc(events, func(a, b *Event) int {
if b.CreatedAt > a.CreatedAt {
return 1
} else if b.CreatedAt < a.CreatedAt {
return -1
}
return 0
})
return events, errors.Join(errs...)
}