/
websocket_provider.go
61 lines (54 loc) · 1.48 KB
/
websocket_provider.go
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package internal
import (
"fmt"
"sync"
internal_types "github.com/terra-money/oracle-feeder-go/internal/types"
"github.com/terra-money/oracle-feeder-go/internal/websocket"
"github.com/terra-money/oracle-feeder-go/pkg/types"
)
type WebsocketProvider struct {
priceBySymbol map[string]internal_types.PriceBySymbol
mu *sync.Mutex
}
func NewWebsocketProvider(exchange string, symbols []string, stopCh <-chan struct{}) (*WebsocketProvider, error) {
candlestickCh, err := websocket.SubscribeCandlestick(exchange, symbols, stopCh)
if err != nil {
return nil, err
}
mu := sync.Mutex{}
provider := &WebsocketProvider{
priceBySymbol: make(map[string]internal_types.PriceBySymbol),
mu: &mu,
}
go func() {
for msg := range candlestickCh {
price := internal_types.PriceBySymbol{
Exchange: msg.Exchange,
Symbol: msg.Symbol,
Base: msg.Base,
Quote: msg.Quote,
Price: msg.Vwap,
Timestamp: msg.Timestamp,
}
mu.Lock()
provider.priceBySymbol[msg.Symbol] = price
mu.Unlock()
}
}()
return provider, nil
}
func (p *WebsocketProvider) GetPrices() map[string]types.PriceByPair {
result := make(map[string]types.PriceByPair)
p.mu.Lock()
defer p.mu.Unlock()
for _, price := range p.priceBySymbol {
pair := fmt.Sprintf("%s/%s", price.Base, price.Quote)
result[pair] = types.PriceByPair{
Base: price.Base,
Quote: price.Quote,
Price: price.Price,
Timestamp: price.Timestamp,
}
}
return result
}