在上一课中，我们介绍了如何在OceanOne交易比特币。OceanOne支持交易任何Mixin Network上的token，包括所有的ERC20和EOS token，不需要任何手续和费用，直接挂单即可。下面介绍如何将将一个ERC20 token挂上OceanOne交易！在掌握了ERC20 token之后，就可以把任何token在Ocean上买卖。
此处我们用一个叫做Benz的ERC20 token为例。这个token已经被充值进Mixin Network，你可以在区块链浏览器看到这个token在Mixin Network内部的总数和交易
预备知识:
先将Ben币存入你的钱包，然后使用ReadAssets API读取它的UUID.
取得该币的UUID
调用 ReadAssets API 会返回json数据, 如:
- asset_id 币的UUID.
- public_key 该币的当前钱包的地址.
- symbol 币的名称. 如: Benz.
if cmd == "aw" { priKey, _, sID, userID, _ := GetWalletInfo() assets, err := mixin.ReadAssets(userID,sID,priKey) if err != nil { log.Fatal(err) } var AssetsInfo map[string]interface{} err = json.Unmarshal(assets, &AssetsInfo) if err != nil { log.Fatal(err) } // fmt.Println("Data is: ",AssetsInfo["data"].(map[string]interface{})["public_key"]) for _, v := range (AssetsInfo["data"].([]interface{})) { if v.(map[string]interface{})["symbol"] == "EOS" { fmt.Println(v.(map[string]interface{})["symbol"]," ", v.(map[string]interface{})["asset_id"]," ", v.(map[string]interface{})["account_name"]," ", v.(map[string]interface{})["account_tag"]," ", v.(map[string]interface{})["balance"]) } else { fmt.Println(v.(map[string]interface{})["symbol"]," ", v.(map[string]interface{})["asset_id"]," ", v.(map[string]interface{})["public_key"]," ", v.(map[string]interface{})["balance"]) } }}调用 ReadAssets API的完整输出如下:
Make your choose:awBenz 0x330860Ec473fF366F5Bc4339a69f5bffB52d18Cb 88.9EOS eoswithmixin 79dd76cedf8f6af49a8d98216bbde890 0USDT 16wWhKAjmACvZzkfxkyrVutqfrJ1JQ83aj 1CNB 0x330860Ec473fF366F5Bc4339a69f5bffB52d18Cb 0.10999989BTC 16wWhKAjmACvZzkfxkyrVutqfrJ1JQ83aj 0XIN 0x330860Ec473fF366F5Bc4339a69f5bffB52d18Cb 0.01限价挂单
- 挂限价买单 低于或者等于市场价的单.
- 挂限价卖单 高于或者是等于市场价的单.
OceanOne支持三种基类价格: USDT, XIN, BTC, 即: Benz/USDT, Benz/XIN, Benz/BTC, 这儿示范Benz/USDT.
限价挂卖单.
新币挂单后,需要等一分钟左右，等OceanOne来初始化新币的相关数据.
if cmd == "s2" { fmt.Print("Please input the price of ERC20/USDT: ") var pcmd string var acmd string scanner.Scan() pcmd = scanner.Text() fmt.Println(pcmd) fmt.Print("Please input the amount of ERC20: ") scanner.Scan() acmd = scanner.Text() fmt.Println(acmd) omemo := generateOceanOrderMemo(mixin.GetAssetId("USDT"),"A",pcmd) priKey, pToken, sID, userID, uPIN := GetWalletInfo() balance := ReadAssetBalanceByUUID(ERC20_BENZ,userID,sID,priKey) fmt.Println(balance) fbalance, _ := strconv.ParseFloat(balance,64) abalance, _ := strconv.ParseFloat(acmd,64) if fbalance > 0 && fbalance >= abalance { fmt.Println(omemo) transInfo, _ := mixin.Transfer(OCEANONE_BOT, acmd, ERC20_BENZ, omemo, messenger.UuidNewV4().String(), uPIN,pToken,userID,sID,priKey) fmt.Println(string(transInfo)) var jsTransInfo map[string]interface{} err := json.Unmarshal([]byte(transInfo), &jsTransInfo) if err != nil { log.Fatal(err) } fmt.Println("The Order id is " + jsTransInfo["data"].(map[string]interface{})["trace_id"].(string) + " it is needed to cancel the order!") } else { fmt.Println("Not enough BenZ!") }}限价挂买单.
新币挂单后,需要等一分钟左右，等OceanOne来初始化新币的相关数据.
if cmd == "b2" { fmt.Print("Please input the price of ERC20/USDT: ") var pcmd string var acmd string scanner.Scan() pcmd = scanner.Text() fmt.Println(pcmd) fmt.Print("Please input the amount of USDT: ") scanner.Scan() acmd = scanner.Text() fmt.Println(acmd) omemo := generateOceanOrderMemo(ERC20_BENZ,"B",pcmd) priKey, pToken, sID, userID, uPIN := GetWalletInfo() balance := ReadAssetBalance("USDT",userID,sID,priKey) fmt.Println(balance) fbalance, _ := strconv.ParseFloat(balance,64) abalance, _ := strconv.ParseFloat(acmd,64) if fbalance > 0 && fbalance >= abalance { fmt.Println(omemo) transInfo, _ := mixin.Transfer(OCEANONE_BOT, acmd, mixin.GetAssetId("USDT"), omemo, messenger.UuidNewV4().String(), uPIN,pToken,userID,sID,priKey) fmt.Println(string(transInfo)) var jsTransInfo map[string]interface{} err := json.Unmarshal([]byte(transInfo), &jsTransInfo) if err != nil { log.Fatal(err) } fmt.Println("The Order id is " + jsTransInfo["data"].(map[string]interface{})["trace_id"].(string) + " it is needed to cancel the order!") } else { fmt.Println("Not enough USDT!") }}//end of b2读取币的价格列表
读取币的价格列表，来确认挂单是否成功!
if cmd == "3" { FormatOceanOneMarketPrice(mixin.GetAssetId("BTC"),mixin.GetAssetId("USDT")) }func FormatOceanOneMarketPrice(asset_id string, base_asset string) { priceInfo, err := GetOceanOneMarketPrice(asset_id, base_asset) if err != nil { log.Fatal(err) } var marketInfo map[string]interface{} err = json.Unmarshal([]byte(priceInfo), &marketInfo) fmt.Println("Price | Amount | Funds | Side") for _, v := range (marketInfo["data"]. (map[string]interface{})["data"]. (map[string]interface{})["asks"]. ([]interface{})) { fmt.Println(v.(map[string]interface{})["price"], v.(map[string]interface{})["amount"], v.(map[string]interface{})["funds"], v.(map[string]interface{})["side"], ) } for _, v := range (marketInfo["data"]. (map[string]interface{})["data"]. (map[string]interface{})["bids"]. ([]interface{})) { fmt.Println(v.(map[string]interface{})["price"], v.(map[string]interface{})["amount"], v.(map[string]interface{})["funds"], v.(map[string]interface{})["side"], ) }}func GetOceanOneMarketPrice(asset_id string, base_asset string) ([]byte, error) { var body []byte req, err := http.NewRequest("GET", "https://events.ocean.one/markets/" + asset_id + "-" + base_asset + "/book", bytes.NewReader(body)) if err != nil { return nil, err } req.Header.Set("Content-Type", "application/json") resp, err := httpClient.Do(req) if err != nil { return nil, err } defer resp.Body.Close() // fmt.Println(resp.Body) bt, err := ioutil.ReadAll(resp.Body) if resp.StatusCode != http.StatusOK { var resp struct { Error Error `json:"error"` } err = json.Unmarshal(bt, &resp) if err == nil { err = resp.Error } } return bt, err}ERC20相关的操作指令
Commands list of this source code:
- trb:Transfer ERC20 from Bot to Wallet
- trm:Transfer ERC20 from Wallet to Master
- o: Ocean.One Exchange
Make your choose(eg: q for Exit!):
- 3: Orders-Book of ERC20/USDT
- b3: Buy ERC20 pay USDT
- s3: Sell ERC20 get USDT
- c: Cancel the order
- q: Exit
完整的代码