implement v2 rest tickers

Author: igrmk

v2/rest/client.go

@@ -38,6 +38,7 @@ type Client struct {
 	Platform  PlatformService
 	Book      BookService
 	Wallet    WalletService
+	Ticker    TickerService
 
 	Synchronous
 }
@@ -95,6 +96,7 @@ func NewClientWithSynchronousURLNonce(sync Synchronous, url string, nonce utils.
 	c.Platform = PlatformService{Synchronous: c}
 	c.Positions = PositionService{Synchronous: c, requestFactory: c}
 	c.Wallet = WalletService{Synchronous: c, requestFactory: c}
+	c.Ticker = TickerService{Synchronous: c}
 	return c
 }
 

v2/rest/ticker.go

@@ -0,0 +1,91 @@
+package rest
+
+import (
+	"errors"
+	"fmt"
+	"net/url"
+	"strings"
+
+	bitfinex "github.com/bitfinexcom/bitfinex-api-go/v2"
+)
+
+type TickerService struct {
+	Synchronous
+}
+
+func (t *TickerService) All() (*bitfinex.TickerSnapshot, error) {
+	req := NewRequestWithMethod("tickers", "GET")
+	req.Params = make(url.Values)
+	req.Params.Add("symbols", "ALL")
+	raw, err := t.Request(req)
+
+	if err != nil {
+		return nil, err
+	}
+
+	tickers := make([]*bitfinex.Ticker, len(raw))
+	for i, ifacearr := range raw {
+		arr, ok := ifacearr.([]interface{})
+		if !ok {
+			return nil, fmt.Errorf("expecting array, got %T", ifacearr)
+		}
+		symbol, ok := arr[0].(string)
+		if !ok {
+			return nil, fmt.Errorf("expecting string, got %T", arr[0])
+		}
+		if len(symbol) <= 1 || (symbol[0] != 't' && symbol[0] != 'f') {
+			return nil, errors.New("invalid symbol")
+		}
+		if (symbol[0] == 't' && len(arr) < 11) || (symbol[0] == 'f' && len(arr) < 14) {
+			return nil, errors.New("invalid length of ticker")
+		}
+		sub := make([]float64, len(arr)-1)
+		for j, iface := range arr[1:] {
+			if iface == nil {
+				sub[j] = 0
+				continue
+			}
+			flt, ok := iface.(float64)
+			if !ok {
+				return nil, fmt.Errorf("expecting float64, got %T", iface)
+			}
+			sub[j] = flt
+		}
+		var entry *bitfinex.Ticker
+		switch symbol[0] {
+		case 't':
+			entry = &bitfinex.Ticker{
+				Symbol:          strings.ToLower(symbol[1:]),
+				Bid:             sub[0],
+				BidSize:         sub[1],
+				Ask:             sub[2],
+				AskSize:         sub[3],
+				DailyChange:     sub[4],
+				DailyChangePerc: sub[5],
+				LastPrice:       sub[6],
+				Volume:          sub[7],
+				High:            sub[8],
+				Low:             sub[9],
+			}
+		case 'f':
+			entry = &bitfinex.Ticker{
+				Symbol:          strings.ToLower(symbol[1:]),
+				FRR:             sub[0],
+				Bid:             sub[1],
+				BidSize:         sub[2],
+				BidPeriod:       int64(sub[3]),
+				Ask:             sub[4],
+				AskSize:         sub[5],
+				AskPeriod:       int64(sub[6]),
+				DailyChange:     sub[7],
+				DailyChangePerc: sub[8],
+				LastPrice:       sub[9],
+				Volume:          sub[10],
+				High:            sub[11],
+				Low:             sub[12],
+			}
+		}
+		tickers[i] = entry
+	}
+	return &bitfinex.TickerSnapshot{Snapshot: tickers}, nil
+}

v2/rest/ticker_test.go

@@ -0,0 +1,40 @@
+package rest
+
+import (
+	"bytes"
+	"io/ioutil"
+	"net/http"
+	"testing"
+)
+
+func TestTickerAll(t *testing.T) {
+	httpDo := func(_ *http.Client, req *http.Request) (*http.Response, error) {
+		msg := `[["fSYMBOL1",3.00,0.01,0.02,4,0.03,0.04,5,0.05,0.06,0.07,0.08,0.09,0.10,null],["tSYMBOL2",0.11,0.12,0.13,0.14,0.15,0.16,0.17,0.18,0.19,0.50]]`
+		resp := http.Response{
+			Body:       ioutil.NopCloser(bytes.NewBufferString(msg)),
+			StatusCode: 200,
+		}
+		return &resp, nil
+	}
+
+	ticker, err := NewClientWithHttpDo(httpDo).Ticker.All()
+
+	if err != nil {
+		t.Fatal(err)
+	}
+	if len(ticker.Snapshot) != 2 {
+		t.Fatalf("expected 2 ticker entries, but got %d", len(ticker.Snapshot))
+	}
+	if ticker.Snapshot[1].Symbol != "symbol2" {
+		t.Fatalf("expected symbol2 symbol, but got %s", ticker.Snapshot[1].Symbol)
+	}
+	if ticker.Snapshot[1].Low != 0.5 {
+		t.Fatalf("expected low equal to 0.5, but got %f", ticker.Snapshot[1].Low)
+	}
+	if ticker.Snapshot[0].BidPeriod != 4 {
+		t.Fatalf("expected bit period equal to 4, but got %d", ticker.Snapshot[0].BidPeriod)
+	}
+	if ticker.Snapshot[0].AskPeriod != 5 {
+		t.Fatalf("expected ask period equal to 5, but got %d", ticker.Snapshot[0].AskPeriod)
+	}
+}

v2/types.go

@@ -1214,6 +1214,7 @@ func NewNotificationFromRaw(raw []interface{}) (o *Notification, err error) {
 
 type Ticker struct {
 	Symbol          string
+	FRR             float64
 	Bid             float64
 	BidPeriod       int64
 	BidSize         float64