Merge branch 'master' into engine

2026-05-13 15:09:42 +00:00 · 2019-07-07 06:06:30 +10:00
parent 3de1d94e5f 5b270f5ec9
commit db7aa5df65
5 changed files with 82 additions and 50 deletions
--- a/engine/events.go
+++ b/engine/events.go
@@ -143,7 +143,7 @@ func (e *Event) ExecuteAction() bool {
 // String turns the structure event into a string
 func (e *Event) String() string {
 	return fmt.Sprintf(
-		"If the %s [%s] %s on %s meets the following %v then %s.\n", e.Pair.String(),
+		"If the %s [%s] %s on %s meets the following %v then %s.", e.Pair.String(),
 		strings.ToUpper(e.Asset.String()), e.Item, e.Exchange, e.Condition, e.Action,
 	)
 }
--- a/exchanges/kraken/kraken_types.go
+++ b/exchanges/kraken/kraken_types.go
@@ -417,6 +417,7 @@ type WebsocketEventResponse struct {
 	Pair         currency.Pair                     `json:"pair,omitempty"`
 	RequestID    int64                             `json:"reqid,omitempty"` // Optional, client originated ID reflected in response message.
 	Subscription WebsocketSubscriptionResponseData `json:"subscription,omitempty"`
+	ChannelName  string                            `json:"channelName,omitempty"`
 	WebsocketSubscriptionEventResponse
 	WebsocketStatusResponse
 	WebsocketErrorResponse
--- a/exchanges/kraken/kraken_websocket.go
+++ b/exchanges/kraken/kraken_websocket.go
@@ -27,7 +27,7 @@ import (
 const (
 	krakenWSURL              = "wss://ws.kraken.com"
 	krakenWSSandboxURL       = "wss://sandbox.kraken.com"
-	krakenWSSupportedVersion = "0.1.1"
+	krakenWSSupportedVersion = "0.2.0"
 	// If a checksum fails, then resubscribing to the channel fails, fatal after these attempts
 	krakenWsResubscribeFailureLimit   = 3
 	krakenWsResubscribeDelayInSeconds = 3
@@ -72,7 +72,8 @@ func (k *Kraken) writeToWebsocket(message []byte) error {
 	k.wsRequestMtx.Lock()
 	defer k.wsRequestMtx.Unlock()
 	if k.Verbose {
-		log.Debugf(log.ExchangeSys, "Sending message to WS: %v",
+		log.Debugf(log.ExchangeSys, "%v Sending message to WS: %v",
+			k.Name,
 			string(message))
 	}
 	// Really basic WS rate limit
@@ -98,7 +99,8 @@ func (k *Kraken) WsConnect() error {

 	var err error
 	if k.Verbose {
-		log.Debugf(log.ExchangeSys, "Attempting to connect to %v",
+		log.Debugf(log.ExchangeSys, "%v Attempting to connect to %v",
+			k.Name,
 			k.Websocket.GetWebsocketURL())
 	}
 	k.WebsocketConn, _, err = dialer.Dial(k.Websocket.GetWebsocketURL(),
@@ -109,7 +111,8 @@ func (k *Kraken) WsConnect() error {
 			err)
 	}
 	if k.Verbose {
-		log.Debugf(log.ExchangeSys, "Successful connection to %v",
+		log.Debugf(log.ExchangeSys, "%v Successful connection to %v",
+			k.Name,
 			k.Websocket.GetWebsocketURL())
 	}
 	go k.WsHandleData()
@@ -166,7 +169,7 @@ func (k *Kraken) wsPingHandler() {
 			pingEvent := fmt.Sprintf("{\"event\":\"%v\"}", krakenWsPing)
 			if k.Verbose {
 				log.Debugf(log.ExchangeSys, "%v sending ping",
-					k.GetName())
+					k.Name)
 			}
 			err := k.writeToWebsocket([]byte(pingEvent))
 			if err != nil {
@@ -193,7 +196,7 @@ func (k *Kraken) WsHandleData() {
 				k.Websocket.DataHandler <- fmt.Errorf("%v WsHandleData: %v",
 					k.Name,
 					err)
-				time.Sleep(time.Second)
+				return
 			}
 			// event response handling
 			var eventResponse WebsocketEventResponse
@@ -222,36 +225,37 @@ func (k *Kraken) WsHandleDataResponse(response WebsocketDataResponse) {
 	case krakenWsTicker:
 		if k.Verbose {
 			log.Debugf(log.ExchangeSys, "%v Websocket ticker data received",
-				k.GetName())
+				k.Name)
 		}
 		k.wsProcessTickers(&channelData, response[1])
 	case krakenWsOHLC:
 		if k.Verbose {
 			log.Debugf(log.ExchangeSys, "%v Websocket OHLC data received",
-				k.GetName())
+				k.Name)
 		}
 		k.wsProcessCandles(&channelData, response[1])
 	case krakenWsOrderbook:
 		if k.Verbose {
 			log.Debugf(log.ExchangeSys, "%v Websocket Orderbook data received",
-				k.GetName())
+				k.Name)
 		}
 		k.wsProcessOrderBook(&channelData, response[1])
 	case krakenWsSpread:
 		if k.Verbose {
 			log.Debugf(log.ExchangeSys, "%v Websocket Spread data received",
-				k.GetName())
+				k.Name)
 		}
 		k.wsProcessSpread(&channelData, response[1])
 	case krakenWsTrade:
 		if k.Verbose {
 			log.Debugf(log.ExchangeSys, "%v Websocket Trade data received",
-				k.GetName())
+				k.Name)
 		}
 		k.wsProcessTrades(&channelData, response[1])
 	default:
 		log.Errorf(log.ExchangeSys, "%v Unidentified websocket data received: %v",
-			k.GetName(), response)
+			k.Name,
+			response)
 	}
 }

@@ -261,34 +265,37 @@ func (k *Kraken) WsHandleEventResponse(response *WebsocketEventResponse) {
 	case krakenWsHeartbeat:
 		if k.Verbose {
 			log.Debugf(log.ExchangeSys, "%v Websocket heartbeat data received",
-				k.GetName())
+				k.Name)
 		}
 	case krakenWsPong:
 		if k.Verbose {
 			log.Debugf(log.ExchangeSys, "%v Websocket pong data received",
-				k.GetName())
+				k.Name)
 		}
 	case krakenWsSystemStatus:
 		if k.Verbose {
 			log.Debugf(log.ExchangeSys, "%v Websocket status data received",
-				k.GetName())
+				k.Name)
 		}
 		if response.Status != "online" {
 			k.Websocket.DataHandler <- fmt.Errorf("%v Websocket status '%v'",
-				k.GetName(), response.Status)
+				k.Name, response.Status)
 		}
 		if response.WebsocketStatusResponse.Version != krakenWSSupportedVersion {
 			log.Warnf(log.ExchangeSys, "%v New version of Websocket API released. Was %v Now %v",
-				k.GetName(), krakenWSSupportedVersion, response.WebsocketStatusResponse.Version)
+				k.Name, krakenWSSupportedVersion, response.WebsocketStatusResponse.Version)
 		}
 	case krakenWsSubscriptionStatus:
 		if k.Verbose {
 			log.Debugf(log.ExchangeSys, "%v Websocket subscription status data received",
-				k.GetName())
+				k.Name)
 		}
 		if response.Status != "subscribed" {
 			if response.RequestID > 0 {
-				k.Websocket.DataHandler <- fmt.Errorf("requestID: '%v'. Error: %v", response.RequestID, response.WebsocketErrorResponse.ErrorMessage)
+				k.Websocket.DataHandler <- fmt.Errorf("%v requestID: '%v'. Error: %v",
+					k.Name,
+					response.RequestID,
+					response.WebsocketErrorResponse.ErrorMessage)
 			} else {
 				k.Websocket.DataHandler <- fmt.Errorf(response.WebsocketErrorResponse.ErrorMessage)
 			}
@@ -296,7 +303,8 @@ func (k *Kraken) WsHandleEventResponse(response *WebsocketEventResponse) {
 		}
 		addNewSubscriptionChannelData(response)
 	default:
-		log.Errorf(log.ExchangeSys, "%v Unidentified websocket data received: %v", k.GetName(), response)
+		log.Errorf(log.ExchangeSys, "%v Unidentified websocket data received: %v",
+			k.Name, response)
 	}
 }

@@ -354,7 +362,7 @@ func (k *Kraken) wsProcessTickers(channelData *WebsocketChannelData, data interf

 	k.Websocket.DataHandler <- exchange.TickerData{
 		Timestamp:  time.Now(),
-		Exchange:   k.GetName(),
+		Exchange:   k.Name,
 		AssetType:  krakenWsAssetType,
 		Pair:       channelData.Pair,
 		ClosePrice: closePrice,
@@ -371,14 +379,20 @@ func (k *Kraken) wsProcessSpread(channelData *WebsocketChannelData, data interfa
 	bestBid := spreadData[0].(string)
 	bestAsk := spreadData[1].(string)
 	timeData, _ := strconv.ParseFloat(spreadData[2].(string), 64)
+	bidVolume := spreadData[3].(string)
+	askVolume := spreadData[4].(string)
 	sec, dec := math.Modf(timeData)
 	spreadTimestamp := time.Unix(int64(sec), int64(dec*(1e9)))
 	if k.Verbose {
-		log.Debugf(log.ExchangeSys, "Spread data for '%v' received. Best bid: '%v' Best ask: '%v' Time: '%v'",
+		log.Debugf(log.ExchangeSys,
+			"%v Spread data for '%v' received. Best bid: '%v' Best ask: '%v' Time: '%v', Bid volume '%v', Ask volume '%v'",
+			k.Name,
 			channelData.Pair,
 			bestBid,
 			bestAsk,
-			spreadTimestamp)
+			spreadTimestamp,
+			bidVolume,
+			askVolume)
 	}
 }

@@ -396,7 +410,7 @@ func (k *Kraken) wsProcessTrades(channelData *WebsocketChannelData, data interfa
 			AssetType:    krakenWsAssetType,
 			CurrencyPair: channelData.Pair,
 			EventTime:    time.Now().Unix(),
-			Exchange:     k.GetName(),
+			Exchange:     k.Name,
 			Price:        price,
 			Amount:       amount,
 			Timestamp:    timeUnix,
@@ -478,14 +492,14 @@ func (k *Kraken) wsProcessOrderBookPartial(channelData *WebsocketChannelData, ob
 	}

 	ob.LastUpdated = highestLastUpdate
-	err := k.Websocket.Orderbook.LoadSnapshot(&ob, k.GetName(), true)
+	err := k.Websocket.Orderbook.LoadSnapshot(&ob, k.Name, true)
 	if err != nil {
 		k.Websocket.DataHandler <- err
 		return
 	}

 	k.Websocket.DataHandler <- exchange.WebsocketOrderbookUpdate{
-		Exchange: k.GetName(),
+		Exchange: k.Name,
 		Asset:    krakenWsAssetType,
 		Pair:     channelData.Pair,
 	}
@@ -499,7 +513,7 @@ func (k *Kraken) wsProcessOrderBookPartial(channelData *WebsocketChannelData, ob
 func (k *Kraken) wsProcessOrderBookBuffer(channelData *WebsocketChannelData, obData map[string]interface{}) {
 	ob := orderbook.Base{
 		AssetType:    krakenWsAssetType,
-		ExchangeName: k.GetName(),
+		ExchangeName: k.Name,
 		Pair:         channelData.Pair,
 	}

@@ -535,7 +549,6 @@ func (k *Kraken) wsProcessOrderBookBuffer(channelData *WebsocketChannelData, obD
 				Amount: amount,
 				Price:  price,
 			})
-
 			timeData, _ := strconv.ParseFloat(bids[2].(string), 64)
 			sec, dec := math.Modf(timeData)
 			bidUpdatedTime := time.Unix(int64(sec), int64(dec*(1e9)))
@@ -550,7 +563,9 @@ func (k *Kraken) wsProcessOrderBookBuffer(channelData *WebsocketChannelData, obD
 	}
 	orderbookBuffer[channelData.ChannelID] = append(orderbookBuffer[channelData.ChannelID], ob)
 	if k.Verbose {
-		log.Debugf(log.ExchangeSys, "Adding orderbook to buffer for channel %v. Lastupdated: %v. %v / %v",
+		log.Debugf(log.ExchangeSys,
+			"%v Adding orderbook to buffer for channel %v. Lastupdated: %v. %v / %v",
+			k.Name,
 			channelData.ChannelID,
 			ob.LastUpdated,
 			len(orderbookBuffer[channelData.ChannelID]),
@@ -561,12 +576,15 @@ func (k *Kraken) wsProcessOrderBookBuffer(channelData *WebsocketChannelData, obD
 // wsProcessOrderBookUpdate updates an orderbook entry for a given currency pair
 func (k *Kraken) wsProcessOrderBookUpdate(channelData *WebsocketChannelData) error {
 	if k.Verbose {
-		log.Debugf(log.ExchangeSys, "Current orderbook 'LastUpdated': %v",
+		log.Debugf(log.ExchangeSys, "%v Current orderbook 'LastUpdated': %v",
+			k.Name,
 			krakenOrderBooks[channelData.ChannelID].LastUpdated)
 	}
 	lowestLastUpdated := orderbookBuffer[channelData.ChannelID][0].LastUpdated
 	if k.Verbose {
-		log.Debugf(log.ExchangeSys, "Sorting orderbook. Earliest 'LastUpdated' entry: %v",
+		log.Debugf(log.ExchangeSys,
+			"%v Sorting orderbook. Earliest 'LastUpdated' entry: %v",
+			k.Name,
 			lowestLastUpdated)
 	}
 	sort.Slice(orderbookBuffer[channelData.ChannelID], func(i, j int) bool {
@@ -575,12 +593,15 @@ func (k *Kraken) wsProcessOrderBookUpdate(channelData *WebsocketChannelData) err

 	lowestLastUpdated = orderbookBuffer[channelData.ChannelID][0].LastUpdated
 	if k.Verbose {
-		log.Debugf(log.ExchangeSys, "Sorted orderbook. Earliest 'LastUpdated' entry: %v",
+		log.Debugf(log.ExchangeSys,
+			"%v Sorted orderbook. Earliest 'LastUpdated' entry: %v",
+			k.Name,
 			lowestLastUpdated)
 	}
 	// The earliest update has to be after the previously stored orderbook
 	if krakenOrderBooks[channelData.ChannelID].LastUpdated.After(lowestLastUpdated) {
-		err := fmt.Errorf("orderbook update out of order. Existing: %v, Attempted: %v",
+		err := fmt.Errorf("%v orderbook update out of order. Existing: %v, Attempted: %v",
+			k.Name,
 			krakenOrderBooks[channelData.ChannelID].LastUpdated,
 			lowestLastUpdated)
 		k.Websocket.DataHandler <- err
@@ -590,20 +611,21 @@ func (k *Kraken) wsProcessOrderBookUpdate(channelData *WebsocketChannelData) err
 	k.updateChannelOrderbookEntries(channelData)
 	highestLastUpdate := orderbookBuffer[channelData.ChannelID][len(orderbookBuffer[channelData.ChannelID])-1].LastUpdated
 	if k.Verbose {
-		log.Debugf(log.ExchangeSys, "Saving orderbook. Lastupdated: %v",
+		log.Debugf(log.ExchangeSys, "%v Saving orderbook. Lastupdated: %v",
+			k.Name,
 			highestLastUpdate)
 	}

 	ob := krakenOrderBooks[channelData.ChannelID]
 	ob.LastUpdated = highestLastUpdate
-	err := k.Websocket.Orderbook.LoadSnapshot(&ob, k.GetName(), true)
+	err := k.Websocket.Orderbook.LoadSnapshot(&ob, k.Name, true)
 	if err != nil {
 		k.Websocket.DataHandler <- err
 		return err
 	}

 	k.Websocket.DataHandler <- exchange.WebsocketOrderbookUpdate{
-		Exchange: k.GetName(),
+		Exchange: k.Name,
 		Asset:    krakenWsAssetType,
 		Pair:     channelData.Pair,
 	}
@@ -627,7 +649,9 @@ func (k *Kraken) updateChannelOrderbookAsks(i, j int, channelData *WebsocketChan
 	askFound := k.updateChannelOrderbookAsk(i, j, channelData)
 	if !askFound {
 		if k.Verbose {
-			log.Debugf(log.ExchangeSys, "Adding Ask for channel %v. Price %v. Amount %v",
+			log.Debugf(log.ExchangeSys,
+				"%v Adding Ask for channel %v. Price %v. Amount %v",
+				k.Name,
 				channelData.ChannelID,
 				orderbookBuffer[channelData.ChannelID][i].Asks[j].Price,
 				orderbookBuffer[channelData.ChannelID][i].Asks[j].Amount)
@@ -646,7 +670,9 @@ func (k *Kraken) updateChannelOrderbookAsk(i, j int, channelData *WebsocketChann
 			if orderbookBuffer[channelData.ChannelID][i].Asks[j].Amount == 0 {
 				// Remove existing entry
 				if k.Verbose {
-					log.Debugf(log.ExchangeSys, "Removing Ask for channel %v. Price %v. Old amount %v. Buffer %v",
+					log.Debugf(log.ExchangeSys,
+						"%v Removing Ask for channel %v. Price %v. Old amount %v. Buffer %v",
+						k.Name,
 						channelData.ChannelID,
 						orderbookBuffer[channelData.ChannelID][i].Asks[j].Price,
 						krakenOrderBooks[channelData.ChannelID].Asks[l].Amount, i)
@@ -657,7 +683,8 @@ func (k *Kraken) updateChannelOrderbookAsk(i, j int, channelData *WebsocketChann
 				l--
 			} else if krakenOrderBooks[channelData.ChannelID].Asks[l].Amount != orderbookBuffer[channelData.ChannelID][i].Asks[j].Amount {
 				if k.Verbose {
-					log.Debugf(log.ExchangeSys, "Updating Ask for channel %v. Price %v. Old amount %v, New Amount %v",
+					log.Debugf(log.ExchangeSys, "%v Updating Ask for channel %v. Price %v. Old amount %v, New Amount %v",
+						k.Name,
 						channelData.ChannelID,
 						orderbookBuffer[channelData.ChannelID][i].Asks[j].Price,
 						krakenOrderBooks[channelData.ChannelID].Asks[l].Amount,
@@ -675,7 +702,9 @@ func (k *Kraken) updateChannelOrderbookBids(i, j int, channelData *WebsocketChan
 	bidFound := k.updateChannelOrderbookBid(i, j, channelData)
 	if !bidFound {
 		if k.Verbose {
-			log.Debugf(log.ExchangeSys, "Adding Bid for channel %v. Price %v. Amount %v",
+			log.Debugf(log.ExchangeSys,
+				"%v Adding Bid for channel %v. Price %v. Amount %v",
+				k.Name,
 				channelData.ChannelID,
 				orderbookBuffer[channelData.ChannelID][i].Bids[j].Price,
 				orderbookBuffer[channelData.ChannelID][i].Bids[j].Amount)
@@ -694,7 +723,9 @@ func (k *Kraken) updateChannelOrderbookBid(i, j int, channelData *WebsocketChann
 			if orderbookBuffer[channelData.ChannelID][i].Bids[j].Amount == 0 {
 				// Remove existing entry
 				if k.Verbose {
-					log.Debugf(log.ExchangeSys, "Removing Bid for channel %v. Price %v. Old amount %v. Buffer %v",
+					log.Debugf(log.ExchangeSys,
+						"%v Removing Bid for channel %v. Price %v. Old amount %v. Buffer %v",
+						k.Name,
 						channelData.ChannelID,
 						orderbookBuffer[channelData.ChannelID][i].Bids[j].Price,
 						krakenOrderBooks[channelData.ChannelID].Bids[l].Amount, i)
@@ -705,7 +736,9 @@ func (k *Kraken) updateChannelOrderbookBid(i, j int, channelData *WebsocketChann
 				l--
 			} else if krakenOrderBooks[channelData.ChannelID].Bids[l].Amount != orderbookBuffer[channelData.ChannelID][i].Bids[j].Amount {
 				if k.Verbose {
-					log.Debugf(log.ExchangeSys, "Updating Bid for channel %v. Price %v. Old amount %v, New Amount %v",
+					log.Debugf(log.ExchangeSys,
+						"%v Updating Bid for channel %v. Price %v. Old amount %v, New Amount %v",
+						k.Name,
 						channelData.ChannelID,
 						orderbookBuffer[channelData.ChannelID][i].Bids[j].Price,
 						krakenOrderBooks[channelData.ChannelID].Bids[l].Amount,
@@ -736,7 +769,7 @@ func (k *Kraken) wsProcessCandles(channelData *WebsocketChannelData, data interf
 		AssetType: krakenWsAssetType,
 		Pair:      channelData.Pair,
 		Timestamp: time.Now(),
-		Exchange:  k.GetName(),
+		Exchange:  k.Name,
 		StartTime: startTimeUnix,
 		CloseTime: endTimeUnix,
 		// Candles are sent every 60 seconds
--- a/go.mod
+++ b/go.mod
@@ -6,7 +6,7 @@ require (
 	github.com/gogo/protobuf v1.2.1 // indirect
 	github.com/golang/protobuf v1.3.1
 	github.com/google/go-querystring v1.0.0
-	github.com/gorilla/mux v1.7.2
+	github.com/gorilla/mux v1.7.3
 	github.com/gorilla/websocket v1.4.0
 	github.com/grpc-ecosystem/go-grpc-middleware v1.0.0
 	github.com/grpc-ecosystem/grpc-gateway v1.9.2
@@ -14,7 +14,7 @@ require (
 	github.com/satori/go.uuid v1.2.1-0.20181028125025-b2ce2384e17b
 	github.com/urfave/cli v1.20.0
 	golang.org/x/crypto v0.0.0-20190605123033-f99c8df09eb5
-	golang.org/x/net v0.0.0-20190606173856-1492cefac77f
+	golang.org/x/net v0.0.0-20190606173856-1492cefac77f // indirect
 	google.golang.org/genproto v0.0.0-20190605220351-eb0b1bdb6ae6
 	google.golang.org/grpc v1.21.1
 )
--- a/go.sum
+++ b/go.sum
@@ -18,14 +18,12 @@ github.com/golang/protobuf v1.3.1/go.mod h1:6lQm79b+lXiMfvg/cZm0SGofjICqVBUtrP5y
 github.com/google/go-cmp v0.2.0/go.mod h1:oXzfMopK8JAjlY9xF4vHSVASa0yLyX7SntLO5aqRK0M=
 github.com/google/go-querystring v1.0.0 h1:Xkwi/a1rcvNg1PPYe5vI8GbeBY/jrVuDX5ASuANWTrk=
 github.com/google/go-querystring v1.0.0/go.mod h1:odCYkC5MyYFN7vkCjXpyrEuKhc/BUO6wN/zVPAxq5ck=
-github.com/gorilla/mux v1.7.2 h1:zoNxOV7WjqXptQOVngLmcSQgXmgk4NMz1HibBchjl/I=
-github.com/gorilla/mux v1.7.2/go.mod h1:1lud6UwP+6orDFRuTfBEV8e9/aOM/c4fVVCaMa2zaAs=
+github.com/gorilla/mux v1.7.3 h1:gnP5JzjVOuiZD07fKKToCAOjS0yOpj/qPETTXCCS6hw=
+github.com/gorilla/mux v1.7.3/go.mod h1:1lud6UwP+6orDFRuTfBEV8e9/aOM/c4fVVCaMa2zaAs=
 github.com/gorilla/websocket v1.4.0 h1:WDFjx/TMzVgy9VdMMQi2K2Emtwi2QcUQsztZ/zLaH/Q=
 github.com/gorilla/websocket v1.4.0/go.mod h1:E7qHFY5m1UJ88s3WnNqhKjPHQ0heANvMoAMk2YaljkQ=
 github.com/grpc-ecosystem/go-grpc-middleware v1.0.0 h1:Iju5GlWwrvL6UBg4zJJt3btmonfrMlCDdsejg4CZE7c=
 github.com/grpc-ecosystem/go-grpc-middleware v1.0.0/go.mod h1:FiyG127CGDf3tlThmgyCl78X/SZQqEOJBCDaAfeWzPs=
-github.com/grpc-ecosystem/grpc-gateway v1.9.0 h1:bM6ZAFZmc/wPFaRDi0d5L7hGEZEx/2u+Tmr2evNHDiI=
-github.com/grpc-ecosystem/grpc-gateway v1.9.0/go.mod h1:vNeuVxBJEsws4ogUvrchl83t/GYV9WGTSLVdBhOQFDY=
 github.com/grpc-ecosystem/grpc-gateway v1.9.2 h1:S+ef0492XaIknb8LMjcwgW2i3cNTzDYMmDrOThOJNWc=
 github.com/grpc-ecosystem/grpc-gateway v1.9.2/go.mod h1:vNeuVxBJEsws4ogUvrchl83t/GYV9WGTSLVdBhOQFDY=
 github.com/kisielk/errcheck v1.1.0/go.mod h1:EZBBE59ingxPouuu3KfxchcWSUPOHkagtvWXihfKN4Q=