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
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