code.vegaprotocol.io/vega@v0.79.0/datanode/sqlsubscribers/checkpoint.go (about)

     1  // Copyright (C) 2023 Gobalsky Labs Limited
     2  //
     3  // This program is free software: you can redistribute it and/or modify
     4  // it under the terms of the GNU Affero General Public License as
     5  // published by the Free Software Foundation, either version 3 of the
     6  // License, or (at your option) any later version.
     7  //
     8  // This program is distributed in the hope that it will be useful,
     9  // but WITHOUT ANY WARRANTY; without even the implied warranty of
    10  // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    11  // GNU Affero General Public License for more details.
    12  //
    13  // You should have received a copy of the GNU Affero General Public License
    14  // along with this program.  If not, see <http://www.gnu.org/licenses/>.
    15  
    16  package sqlsubscribers
    17  
    18  import (
    19  	"context"
    20  
    21  	"code.vegaprotocol.io/vega/core/events"
    22  	"code.vegaprotocol.io/vega/datanode/entities"
    23  	eventspb "code.vegaprotocol.io/vega/protos/vega/events/v1"
    24  
    25  	"github.com/pkg/errors"
    26  )
    27  
    28  type CheckpointEvent interface {
    29  	events.Event
    30  	Proto() eventspb.CheckpointEvent
    31  }
    32  
    33  type CheckpointStore interface {
    34  	Add(context.Context, entities.Checkpoint) error
    35  }
    36  
    37  type Checkpoint struct {
    38  	subscriber
    39  	store CheckpointStore
    40  }
    41  
    42  func NewCheckpoint(store CheckpointStore) *Checkpoint {
    43  	np := &Checkpoint{
    44  		store: store,
    45  	}
    46  	return np
    47  }
    48  
    49  func (n *Checkpoint) Types() []events.Type {
    50  	return []events.Type{events.CheckpointEvent}
    51  }
    52  
    53  func (n *Checkpoint) Push(ctx context.Context, evt events.Event) error {
    54  	return n.consume(ctx, evt.(CheckpointEvent))
    55  }
    56  
    57  func (n *Checkpoint) consume(ctx context.Context, event CheckpointEvent) error {
    58  	pnp := event.Proto()
    59  	np, err := entities.CheckpointFromProto(&pnp, entities.TxHash(event.TxHash()))
    60  	if err != nil {
    61  		return errors.Wrap(err, "unable to parse checkpoint")
    62  	}
    63  	np.VegaTime = n.vegaTime
    64  	np.SeqNum = event.Sequence()
    65  
    66  	if err := n.store.Add(ctx, np); err != nil {
    67  		return errors.Wrap(err, "error adding checkpoint")
    68  	}
    69  
    70  	return nil
    71  }
    72  
    73  func (n *Checkpoint) Name() string {
    74  	return "Checkpoint"
    75  }