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。掌握了ERC20代币的交易方法，就可以交易任何其他Mixin Network代币了。
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getAssets API读取它的UUID.
取得该币的UUID
调用 getAssets 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 ( args.type === TYPE_WALLET_ASSETS_INFO ) { const assetsInfo = await newUserClient.getUserAssets(); console.log("-AssetID--Asset--Balance--public_key--"); assetsInfo.forEach(function(element) { console.log(element.asset_id + " " + element.symbol + " " + element.balance + " " + element.public_key + " " + element.account_name + " " + element.account_tag ); }); // console.log(assetsInfo);}调用 getUserAssets API的完整输出如下:
Make your choose aw: Read Wallet All Asssets InformationYou choice to : { type: 'aw: Read Wallet All Asssets Information' }You wallet is : 0b10471b-1aed-3944-9eda-5ab947562761-AssetID--Asset--Balance--public_key--2b9c216c-ef60-398d-a42a-eba1b298581d Benz 99.9 0xA35722B0a5Ab20f2d2276999F5b18D42C71Ba6886cfe566e-4aad-470b-8c9a-2fd35b49c68d EOS 0 eoswithmixin 30f0c36057b9b22151173b309bd0d79c965e5c6e-434c-3fa9-b780-c50f43cd955c CNB 999.99999993 0xA35722B0a5Ab20f2d2276999F5b18D42C71Ba688c6d0c728-2624-429b-8e0d-d9d19b6592fa BTC 0 15MySY7UnA827TRMQWuCKGiogCYXUmt21M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.
else if ( args.type === TYPE_OO_SELL_ERC_USDT ) { var prompts = [ { name: 'price', type: 'input', message: "Input the price of ERC(Benz)/USDT: ", }, ]; price = await inquirer.prompt(prompts); var prompts = [ { name: 'amount', type: 'input', message: "Input the amount of ERC20(Benz): ", }, ]; amount = await inquirer.prompt(prompts); console.log(price); console.log(amount); const memo = GenerateOceanMemo(USDT_ASSET_ID,"A",price.price); const assetInfo = await newUserClient.getUserAsset(ERC20_BENZ); console.log("The Wallet 's USDT balance is ", assetInfo.balance); if ( assetInfo.balance >= amount.amount ) { const Obj = { assetId: ERC20_BENZ, recipientId: OCEANONE_BOT, traceId: newUserClient.getUUID(), amount: amount.amount, memo: memo, } const transInfo = await newUserClient.transferFromBot(Obj); console.log(transInfo); console.log("The Order id is " + transInfo.trace_id + " It is needed to cancel the order!"); } else { console.log("Not enough ERC20_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.
else if ( args.type === TYPE_OO_BUY_ERC_USDT ) { var prompts = [ { name: 'price', type: 'input', message: "Input the price of ERC20(Benz)/USDT: ", }, ]; price = await inquirer.prompt(prompts); var prompts = [ { name: 'amount', type: 'input', message: "Input the amount of USDT: ", }, ]; amount = await inquirer.prompt(prompts); console.log(price); console.log(amount); const memo = GenerateOceanMemo(ERC20_BENZ,"B",price.price); const assetInfo = await newUserClient.getUserAsset(USDT_ASSET_ID); console.log("The Wallet 's USDT balance is ", assetInfo.balance); if ( assetInfo.balance >= amount.amount && assetInfo.balance >= 1 ) { const Obj = { assetId: USDT_ASSET_ID, recipientId: OCEANONE_BOT, traceId: newUserClient.getUUID(), amount: amount.amount, memo: memo, } const transInfo = await newUserClient.transferFromBot(Obj); console.log(transInfo); console.log("The Order id is " + transInfo.trace_id + " It is needed to cancel the order!"); } else { console.log("Not enough USDT!"); }}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!
else if ( args.type === TYPE_OO_FETCH_ERC_USDT ) { FetchOceanOneMarketInfos(ERC20_BENZ, USDT_ASSET_ID);}function FetchOceanOneMarketInfos(asset_id, base_asset) { var instance = axios.create({ baseURL: "https://events.ocean.one/markets/" + asset_id + "-" + base_asset + "/book", timeout: 3000, headers: {'X-Custom-Header': 'foobar'} }); instance.get() .then(function(response) { console.log("--Price--Amount--Funds--Side") response.data.data.data.asks.forEach(function(element) { console.log(element.price + " " + element.amount + " " + element.funds + " " + element.side); }); response.data.data.data.bids.forEach(function(element) { console.log(element.price + " " + element.amount + " " + element.funds + " " + element.side); }); // console.log(response.data.data.data.asks); });}ERC20相关的操作指令
Commands list of this source code:
- 21: Fetch ERC20/USDT order book
- 24: Sell ERC20/USDT
- 27: Buy ERC20/USDT
- 28: Cancel the order
- q: Exit
完整的代码