code.vegaprotocol.io/vega@v0.79.0/datanode/sqlsubscribers/epoch.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 EpochUpdateEvent interface {
    29  	events.Event
    30  	Proto() eventspb.EpochEvent
    31  }
    32  
    33  type EpochStore interface {
    34  	Add(context.Context, entities.Epoch) error
    35  }
    36  
    37  type Epoch struct {
    38  	subscriber
    39  	store EpochStore
    40  }
    41  
    42  func NewEpoch(store EpochStore) *Epoch {
    43  	t := &Epoch{
    44  		store: store,
    45  	}
    46  	return t
    47  }
    48  
    49  func (es *Epoch) Types() []events.Type {
    50  	return []events.Type{events.EpochUpdate}
    51  }
    52  
    53  func (es *Epoch) Push(ctx context.Context, evt events.Event) error {
    54  	return es.consume(ctx, evt.(EpochUpdateEvent))
    55  }
    56  
    57  func (es *Epoch) consume(ctx context.Context, event EpochUpdateEvent) error {
    58  	epochUpdateEvent := event.Proto()
    59  	epoch := entities.EpochFromProto(epochUpdateEvent, entities.TxHash(event.TxHash()))
    60  	epoch.VegaTime = es.vegaTime
    61  
    62  	return errors.Wrap(es.store.Add(ctx, epoch), "error adding epoch update")
    63  }
    64  
    65  func (es *Epoch) Name() string {
    66  	return "Epoch"
    67  }