通过 Go 在去中心化交易所OceanOne上挂单买卖任意ERC20 token

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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:aw
Benz 0x330860Ec473fF366F5Bc4339a69f5bffB52d18Cb 88.9
EOS eoswithmixin 79dd76cedf8f6af49a8d98216bbde890 0
USDT 16wWhKAjmACvZzkfxkyrVutqfrJ1JQ83aj 1
CNB 0x330860Ec473fF366F5Bc4339a69f5bffB52d18Cb 0.10999989
BTC 16wWhKAjmACvZzkfxkyrVutqfrJ1JQ83aj 0
XIN 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

本文来自:Segmentfault

感谢作者:Mixin_Network

查看原文:通过 Go 在去中心化交易所OceanOne上挂单买卖任意ERC20 token

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