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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,146 @@ | ||
| package pricing | ||
|
|
||
| import ( | ||
| "context" | ||
| "encoding/json" | ||
| "fmt" | ||
| "net/http" | ||
| "strings" | ||
| "time" | ||
|
|
||
| "code.vegaprotocol.io/priceproxy/config" | ||
| log "github.com/sirupsen/logrus" | ||
| "golang.org/x/time/rate" | ||
| ) | ||
|
|
||
| var ( | ||
| coingeckoExtraPairs = []config.PriceConfig{} | ||
| coingeckoSourceName = "coingecko" | ||
| ) | ||
|
|
||
| func coingeckoAddExtraPriceConfig(priceconfig config.PriceConfig) error { | ||
| coingeckoExtraPairs = append(coingeckoExtraPairs, priceconfig) | ||
| return nil | ||
| } | ||
|
|
||
| type priceBoard interface { | ||
| UpdatePrice(pricecfg config.PriceConfig, newPrice PriceInfo) | ||
| } | ||
|
|
||
| func coingeckoStartFetching( | ||
| board priceBoard, | ||
| sourcecfg config.SourceConfig, | ||
| ) { | ||
| var ( | ||
| fetchURL = sourcecfg.URL.String() | ||
| oneRequestEvery = time.Duration(sourcecfg.SleepReal) * time.Second | ||
| rateLimiter = rate.NewLimiter(rate.Every(oneRequestEvery), 1) | ||
| ctx = context.Background() | ||
| err error | ||
| ) | ||
| log.WithFields(log.Fields{ | ||
| "sourceName": coingeckoSourceName, | ||
| "URL": fetchURL, | ||
| "rateLimitDuration": oneRequestEvery, | ||
| }).Infof("Starting Coingecko Fetching\n") | ||
| for { | ||
| if err = rateLimiter.Wait(ctx); err != nil { | ||
| log.WithFields(log.Fields{ | ||
| "error": err.Error(), | ||
| "sourceName": coingeckoSourceName, | ||
| "URL": fetchURL, | ||
| "rateLimitDuration": oneRequestEvery, | ||
| }).Errorln("Rate Limiter Failed. Falling back to Sleep.") | ||
| // fallback | ||
| time.Sleep(oneRequestEvery) | ||
| } | ||
|
|
||
| prices, err := coingeckoSingleFetch(fetchURL) | ||
| if err != nil { | ||
| log.WithFields(log.Fields{ | ||
| "error": err.Error(), | ||
| "sourceName": coingeckoSourceName, | ||
| "URL": fetchURL, | ||
| "rateLimitDuration": oneRequestEvery, | ||
| }).Errorf("Retry in %d sec.\n", oneRequestEvery) | ||
| continue | ||
| } | ||
|
|
||
| for base, data := range *prices { | ||
| board.UpdatePrice( | ||
| config.PriceConfig{ | ||
| Source: coingeckoSourceName, | ||
| Base: base, | ||
| Quote: "ETH", | ||
| Factor: 1.0, | ||
| Wander: true, | ||
| }, | ||
| PriceInfo{ | ||
| Price: data.ETH, | ||
| LastUpdatedReal: time.Unix(int64(data.LastUpdatedAt), 0), | ||
| LastUpdatedWander: time.Now().Round(0), | ||
| }, | ||
| ) | ||
| } | ||
|
|
||
| for _, extraPair := range coingeckoExtraPairs { | ||
| base, ok := (*prices)[extraPair.Base] | ||
| if !ok { | ||
| log.WithFields(log.Fields{ | ||
| "sourceName": coingeckoSourceName, | ||
| "URL": fetchURL, | ||
| "rateLimitDuration": oneRequestEvery, | ||
| }).Errorf("Failed to get base %s for extra pair %v\n", extraPair.Base, extraPair) | ||
| continue | ||
| } | ||
| var price float64 | ||
| if strings.EqualFold(extraPair.Quote, "EUR") { | ||
| price = base.EUR | ||
| } else if strings.EqualFold(extraPair.Quote, "USD") { | ||
| price = base.USD | ||
| } else if strings.EqualFold(extraPair.Quote, "BTC") { | ||
| price = base.BTC | ||
| } else { | ||
| quote, ok := (*prices)[extraPair.Quote] | ||
| if !ok { | ||
| log.WithFields(log.Fields{ | ||
| "sourceName": coingeckoSourceName, | ||
| "URL": fetchURL, | ||
| "rateLimitDuration": oneRequestEvery, | ||
| }).Errorf("Failed to get quote %s for extra pair %v\n", extraPair.Source, extraPair) | ||
| continue | ||
| } | ||
| price = base.USD / quote.USD | ||
| } | ||
| board.UpdatePrice( | ||
| extraPair, | ||
| PriceInfo{ | ||
| Price: price, | ||
| LastUpdatedReal: time.Unix(int64(base.LastUpdatedAt), 0), | ||
| LastUpdatedWander: time.Now().Round(0), | ||
| }, | ||
| ) | ||
| } | ||
| } | ||
| } | ||
|
|
||
| type coingeckoFetchData map[string]struct { | ||
| USD float64 `json:"usd"` | ||
| EUR float64 `json:"eur"` | ||
| BTC float64 `json:"btc"` | ||
| ETH float64 `json:"eth"` | ||
| LastUpdatedAt uint64 `json:"last_updated_at"` | ||
| } | ||
|
|
||
| func coingeckoSingleFetch(url string) (*coingeckoFetchData, error) { | ||
| resp, err := http.Get(url) | ||
| if err != nil { | ||
| return nil, fmt.Errorf("failed to get coingecko data, %w", err) | ||
| } | ||
| defer resp.Body.Close() | ||
| var prices coingeckoFetchData | ||
| if err = json.NewDecoder(resp.Body).Decode(&prices); err != nil { | ||
| return nil, fmt.Errorf("failed to parse coingecko data, %w", err) | ||
| } | ||
| return &prices, nil | ||
| } |
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