code.vegaprotocol.io/vega@v0.79.0/datanode/sqlsubscribers/amm_pool.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  	"fmt"
    21  
    22  	"code.vegaprotocol.io/vega/core/events"
    23  	"code.vegaprotocol.io/vega/datanode/entities"
    24  	eventspb "code.vegaprotocol.io/vega/protos/vega/events/v1"
    25  )
    26  
    27  type AMMPoolEvent interface {
    28  	events.Event
    29  	AMMPool() *eventspb.AMM
    30  }
    31  
    32  type AMMPoolStore interface {
    33  	Upsert(ctx context.Context, pool entities.AMMPool) error
    34  }
    35  
    36  type AMMPools struct {
    37  	subscriber
    38  	store       AMMPoolStore
    39  	marketDepth MarketDepthService
    40  }
    41  
    42  func NewAMMPools(store AMMPoolStore, marketDepth MarketDepthService) *AMMPools {
    43  	return &AMMPools{
    44  		store:       store,
    45  		marketDepth: marketDepth,
    46  	}
    47  }
    48  
    49  func (p *AMMPools) Types() []events.Type {
    50  	return []events.Type{events.AMMPoolEvent}
    51  }
    52  
    53  func (p *AMMPools) Push(ctx context.Context, evt events.Event) error {
    54  	return p.consume(ctx, evt.(AMMPoolEvent), evt.Sequence())
    55  }
    56  
    57  func (p *AMMPools) consume(ctx context.Context, pe AMMPoolEvent, seqNum uint64) error {
    58  	ammPool, err := entities.AMMPoolFromProto(pe.AMMPool(), p.vegaTime)
    59  	if err != nil {
    60  		return fmt.Errorf("cannot parse AMM Pool event from proto message: %w", err)
    61  	}
    62  
    63  	err = p.store.Upsert(ctx, ammPool)
    64  	if err != nil {
    65  		return fmt.Errorf("could not save AMM Pool event: %w", err)
    66  	}
    67  
    68  	if ammPool.Status == entities.AMMStatusRejected || ammPool.Status == entities.AMMStatusUnspecified {
    69  		return nil
    70  	}
    71  
    72  	// send it to the market-depth service
    73  	p.marketDepth.OnAMMUpdate(ammPool, p.vegaTime, seqNum)
    74  
    75  	return nil
    76  }
    77  
    78  func (p *AMMPools) Name() string {
    79  	return "AMMPools"
    80  }