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snapshot_data.go
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/
snapshot_data.go
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// Copyright (c) 2022 Gobalsky Labs Limited
//
// Use of this software is governed by the Business Source License included
// in the LICENSE.DATANODE file and at https://www.mariadb.com/bsl11.
//
// Change Date: 18 months from the later of the date of the first publicly
// available Distribution of this version of the repository, and 25 June 2022.
//
// On the date above, in accordance with the Business Source License, use
// of this software will be governed by version 3 or later of the GNU General
// Public License.
package sqlsubscribers
import (
"context"
"fmt"
"github.com/zeta-protocol/zeta/core/events"
"github.com/zeta-protocol/zeta/datanode/entities"
eventspb "github.com/zeta-protocol/zeta/protos/zeta/events/v1"
)
type CoreSnapshotEvent interface {
events.Event
SnapshotTakenEvent() eventspb.CoreSnapshotData
}
type snapAdder interface {
AddSnapshot(context.Context, entities.CoreSnapshotData) error
}
type SnapshotData struct {
subscriber
store snapAdder
}
func NewSnapshotData(store snapAdder) *SnapshotData {
return &SnapshotData{
store: store,
}
}
func (s *SnapshotData) Types() []events.Type {
return []events.Type{events.CoreSnapshotEvent}
}
func (s *SnapshotData) Push(ctx context.Context, evt events.Event) error {
return s.consume(ctx, evt.(CoreSnapshotEvent))
}
func (s *SnapshotData) consume(ctx context.Context, event CoreSnapshotEvent) error {
sProto := event.SnapshotTakenEvent()
snap := entities.CoreSnapshotDataFromProto(&sProto, entities.TxHash(event.TxHash()), s.zetaTime)
if err := s.store.AddSnapshot(ctx, snap); err != nil {
return fmt.Errorf("error adding core snapshot data: %w", err)
}
return nil
}