mirror of
https://github.com/c9s/bbgo.git
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163 lines
3.7 KiB
Go
163 lines
3.7 KiB
Go
package bitgetapi
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import (
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"bytes"
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"context"
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"crypto/hmac"
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"crypto/sha256"
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"encoding/base64"
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"encoding/json"
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"net/http"
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"net/url"
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"strings"
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"time"
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"github.com/pkg/errors"
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"github.com/c9s/bbgo/pkg/util"
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)
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const defaultHTTPTimeout = time.Second * 15
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const RestBaseURL = "https://api.bitget.com"
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const PublicWebSocketURL = "wss://ws.bitget.com/spot/v1/stream"
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const PrivateWebSocketURL = "wss://ws.bitget.com/spot/v1/stream"
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type RestClient struct {
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BaseURL *url.URL
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client *http.Client
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Key, Secret, Passphrase string
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}
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func NewClient() *RestClient {
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u, err := url.Parse(RestBaseURL)
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if err != nil {
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panic(err)
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}
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return &RestClient{
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BaseURL: u,
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client: &http.Client{
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Timeout: defaultHTTPTimeout,
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},
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}
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}
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func (c *RestClient) Auth(key, secret, passphrase string) {
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c.Key = key
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// pragma: allowlist nextline secret
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c.Secret = secret
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c.Passphrase = passphrase
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}
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// NewRequest create new API request. Relative url can be provided in refURL.
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func (c *RestClient) newRequest(ctx context.Context, method, refURL string, params url.Values, body []byte) (*http.Request, error) {
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rel, err := url.Parse(refURL)
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if err != nil {
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return nil, err
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}
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if params != nil {
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rel.RawQuery = params.Encode()
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}
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pathURL := c.BaseURL.ResolveReference(rel)
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return http.NewRequestWithContext(ctx, method, pathURL.String(), bytes.NewReader(body))
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}
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// sendRequest sends the request to the API server and handle the response
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func (c *RestClient) sendRequest(req *http.Request) (*util.Response, error) {
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resp, err := c.client.Do(req)
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if err != nil {
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return nil, err
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}
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// newResponse reads the response body and return a new Response object
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response, err := util.NewResponse(resp)
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if err != nil {
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return response, err
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}
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// Check error, if there is an error, return the ErrorResponse struct type
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if response.IsError() {
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return response, errors.New(string(response.Body))
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}
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return response, nil
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}
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// newAuthenticatedRequest creates new http request for authenticated routes.
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func (c *RestClient) NewAuthenticatedRequest(ctx context.Context, method, refURL string, params url.Values, payload interface{}) (*http.Request, error) {
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if len(c.Key) == 0 {
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return nil, errors.New("empty api key")
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}
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if len(c.Secret) == 0 {
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return nil, errors.New("empty api secret")
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}
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rel, err := url.Parse(refURL)
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if err != nil {
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return nil, err
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}
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if params != nil {
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rel.RawQuery = params.Encode()
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}
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pathURL := c.BaseURL.ResolveReference(rel)
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path := pathURL.Path
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if rel.RawQuery != "" {
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path += "?" + rel.RawQuery
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}
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// set location to UTC so that it outputs "2020-12-08T09:08:57.715Z"
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t := time.Now().In(time.UTC)
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timestamp := t.Format("2006-01-02T15:04:05.999Z07:00")
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var body []byte
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if payload != nil {
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switch v := payload.(type) {
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case string:
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body = []byte(v)
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case []byte:
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body = v
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default:
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body, err = json.Marshal(v)
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if err != nil {
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return nil, err
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}
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}
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}
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signKey := timestamp + strings.ToUpper(method) + path + string(body)
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signature := Sign(signKey, c.Secret)
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req, err := http.NewRequestWithContext(ctx, method, pathURL.String(), bytes.NewReader(body))
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if err != nil {
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return nil, err
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}
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req.Header.Add("Content-Type", "application/json")
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req.Header.Add("Accept", "application/json")
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req.Header.Add("ACCESS-KEY", c.Key)
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req.Header.Add("ACCESS-SIGN", signature)
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req.Header.Add("ACCESS-TIMESTAMP", timestamp)
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req.Header.Add("ACCESS-PASSPHRASE", c.Passphrase)
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return req, nil
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}
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func Sign(payload string, secret string) string {
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var sig = hmac.New(sha256.New, []byte(secret))
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_, err := sig.Write([]byte(payload))
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if err != nil {
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return ""
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}
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return base64.StdEncoding.EncodeToString(sig.Sum(nil))
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// return hex.EncodeToString(sig.Sum(nil))
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}
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