VKzxJMwr

1public class BitmexClient {
2    private final OkHttpClient client = new OkHttpClient();
3
4    private String api = "";
5    private String secret = "";
6
7
8    public void setApi(String api, String secret) {
9        this.api = api;
10        this.secret=secret;
11    }
12
13    //API REQUEST BUILDING
14
15    private Response apicall(String verb, String endpoint, String jsonBody) throws NoSuchAlgorithmException, InvalidKeyException, IOException {
16        String expires = String.valueOf(Instant.now().getEpochSecond()+3600);
17        Request.Builder builder = new Request.Builder()
18                .url("https://www.bitmex.com/api/v1"+endpoint)
19                .addHeader("api-expires", expires)
20                .addHeader("api-key", api)
21                .addHeader("api-signature", encodeHexHmacSignature(secret, verb+"/api/v1"+endpoint+expires));
22                /*if (verb.equals("POST")){
23                    builder.post(RequestBody.create(MediaType.get("text/plain; charset=utf-8t"), encodeHexHmacSignature(secret, jsonBody)));
24                } else if (verb.equalsIgnoreCase("PUT")){
25                    builder.put(RequestBody.create(MediaType.get("text/plain; charset=utf-8"), encodeHexHmacSignature(secret, jsonBody)));
26                }*/
27                Request request = builder.build();
28        return client.newCall(request).execute();
29    }
30
31
32    private String encodeHexHmacSignature(String key, String data) throws NoSuchAlgorithmException, UnsupportedEncodingException, InvalidKeyException {
33        Mac sha256_HMAC = Mac.getInstance("HmacSHA256");
34        SecretKeySpec secret_key = new SecretKeySpec(key.getBytes("UTF-8"), "HmacSHA256");
35        sha256_HMAC.init(secret_key);
36        return Hex.encodeHexString(sha256_HMAC.doFinal(data.getBytes("UTF-8")));
37    }
38
39    //TRADING METHODS
40    public void placeOrder(){
41        String data = "{\"symbol\":\"XBTUSD\",\"orderQty\":20,\"ordType\":\"Market}";
42        try {
43            Response r = apicall("POST", "order", data);
44            System.out.println(r.body().string());
45        } catch (NoSuchAlgorithmException | InvalidKeyException | IOException e) {
46            e.printStackTrace();
47        }
48    }