上一章介紹了Exincore，你可以1秒完成資產的市價買賣。如果你想限定價格買賣，或者買賣一些exincore不支持的資產，你需要OceanOne。

方案二: 掛單Ocean.One交易所

Ocean.one是基于Mixin Network的去中心化交易所，它性能一流。 你可以在OceanOne上交易任何資產，只需要將你的幣轉給OceanOne, 將交易信息寫在交易的memo里，OceanOne會在市場里列出你的交易需求， 交易成功后，會將目標幣轉入到你的MixinNetwork帳上，它有三大特點與優勢：

• 不需要在OceanOne注冊
• 不需要存幣到交易所
• 支持所有Mixin Network上能夠轉賬的資產，所有的ERC20 EOS代幣。

預備知識:

你先需要創建一個機器人, 方法在 教程一.

安裝依賴包

我們需要依賴 msgpack and mixin-bot ,第四章 已經做過介紹, 你應該先安裝過它了.

充幣到 Mixin Network, 并讀出它的余額.

此處演示用 USDT購買BTC 或者 用BTC購買USDT。交易前，先檢查一下錢包地址。 完整的步驟如下:

• 檢查比特幣或USDT的余額，錢包地址。并記下錢包地址。
• 從第三方交易所或者你的冷錢包中，將幣充到上述錢包地址。
• 再檢查一下幣的余額，看到帳與否。(比特幣的到帳時間是5個區塊的高度，約100分鐘)。

比特幣與USDT的充值地址是一樣的。

if cmd == "aw"assetsInfo = walletAccount.read_assets()p "--------The Wallet Assets List-----------------"assetsInfo["data"].each { |x| puts x["symbol"] + " " +x["balance"] + " " + x["public_key"] +x["account_name"] + " " + x["account_tag"]}p "----------End of Wallet Assets --------------" end 復制代碼

取得Ocean.one的市場價格信息

如何來查詢Ocean.one市場的價格信息呢？你要先了解你交易的基礎幣是什么，如果你想買比特幣，賣出USDT,那么基礎貨幣就是USDT;如果你想買USDT,賣出比特幣，那么基礎貨幣就是比特幣.

if ocmd == "1"Utils.OceanOneMarketPriceRequest(BTC_ASSET_ID, USDT_ASSET_ID) end def self.OceanOneMarketPriceRequest(asset_id, base_asset_id)full_url = "https://events.ocean.one/markets/" + asset_id + "-" + base_asset_id + "/book"data = HTTP.get(full_url).bodybody = ""redData = data.readpartialwhile redData != nilbody = body + redDataredData = data.readpartialendresult = ActiveSupport::JSON.decode(body).with_indifferent_accessresult["data"]["data"]["asks"].each { |x|puts x["side"] + " " + x["price"] + " " +x["amount"] + " " + x["funds"]}result["data"]["data"]["bids"].each { |x|puts x["side"] + " " + x["price"] + " " +x["amount"] + " " + x["funds"]} end 復制代碼

交易前，創建一個Memo!

在第二章里,Ruby比特幣開發教程: 機器人接受比特幣并立即退還用戶, 我們學習過轉帳，這兒我們介紹如何告訴Ocean.one，我們給它轉帳的目的是什么，信息全部放在memo里.

• side 方向,"B" 或者 "A", "B"是購買, "A"是出售.
• targetAsset 目標虛擬資產的UUID.
• price 價格，如果操作方向是"B", 價格就是AssetUUID的價格; 如果操作方向是"B", 價格就是轉給Ocean.one幣的價格.

def self.GenerateOceanMemo(targetAsset,side,price)memo = Base64.encode64(MessagePack.pack({'A' => UUID.parse(targetAsset).to_raw,'S' => side,'P' => price,'T' => "L"}))return memo.sub("\n","") end 復制代碼

買入BTC的代碼如下：

if ocmd == "b1"p "Input the price of BTC/USDT: "bprice = gets.chompp "Input the amount of USDT: "amount = gets.chompmemo = Utils.GenerateOceanMemo(BTC_ASSET_ID,"B",bprice)p memoassetsInfo = walletAccount.read_asset(USDT_ASSET_ID)if assetsInfo["data"]["balance"].to_f >= 1 && assetsInfo["data"]["balance"].to_f >= amount.to_ftransInfo = walletAccount.create_transfer(walletAccount.encrypt_pin(DEFAULT_PIN),{asset_id: USDT_ASSET_ID,opponent_id: OCEANONE_BOT,amount: amount,trace_id: SecureRandom.uuid,memo: memo})p transInfop "The Order id is " + transInfo["data"]["trace_id"] + " It's needed by cancel-order!"elsep "Not enough USDT"end end 復制代碼

出售BTC的例子

轉打算出售的XIN給Ocean.one(OCEANONE_BOT),將你打算換回來的目標虛擬資產的UUID放入memo.

if ocmd == "s1"p "Input the price of BTC/USDT: "bprice = gets.chompp "Input the amount of BTC: "amount = gets.chompmemo = Utils.GenerateOceanMemo(USDT_ASSET_ID,"A",bprice)p memoassetsInfo = walletAccount.read_asset(BTC_ASSET_ID)if assetsInfo["data"]["balance"].to_f > 0 && assetsInfo["data"]["balance"].to_f >= amount.to_ftransInfo = walletAccount.create_transfer(walletAccount.encrypt_pin(DEFAULT_PIN),{asset_id: BTC_ASSET_ID,opponent_id: OCEANONE_BOT,amount: amount,trace_id: SecureRandom.uuid,memo: memo})p transInfop "The Order id is " + transInfo["data"]["trace_id"] + " It's needed by cancel-order!"elsep "Not enough BTC"end end 復制代碼

一個成功的掛單如下：

Make your choose(eg: q for Exit!): b1 "Input the price of BTC/USDT: " 7777 "Input the amount of USDT: " 1 "hKFBxBDG0McoJiRCm44N2dGbZZL6oVOhQqFQpDc3NzehVKFM" {"data"=>{"type"=>"transfer", "snapshot_id"=>"10178f11-4e05-4076-b7c9-006e95919a1b", "opponent_id"=>"aaff5bef-42fb-4c9f-90e0-29f69176b7d4", "asset_id"=>"815b0b1a-2764-3736-8faa-42d694fa620a", "amount"=>"-1", "trace_id"=>"89025aab-598f-43e5-834a-2feaa01797ff", "memo"=>"hKFBxBDG0McoJiRCm44N2dGbZZL6oVOhQqFQpDc3NzehVKFM", "created_at"=>"2019-05-27T06:53:07.135709255Z", "counter_user_id"=>"aaff5bef-42fb-4c9f-90e0-29f69176b7d4"}} "The Order id is 89025aab-598f-43e5-834a-2feaa01797ff It's needed by cancel-order!" 復制代碼

取消掛單

Ocean.one將trace_id當做訂單，比如上面的例子， 89025aab-598f-43e5-834a-2feaa01797ff 就是訂單號，我們用他來取消訂單。

if ocmd == "c"p "Input the Order ID: "orderid = gets.chompmemo1 = Base64.encode64(MessagePack.pack({'O' => UUID.parse(orderid).to_raw}))memo = memo1.sub("\n","")assetsInfo = walletAccount.read_asset(CNB_ASSET_ID)if assetsInfo["data"]["balance"].to_f > 0transInfo = walletAccount.create_transfer(walletAccount.encrypt_pin(DEFAULT_PIN),{asset_id: CNB_ASSET_ID,opponent_id: OCEANONE_BOT,amount: "0.00000001",trace_id: SecureRandom.uuid,memo: memo})p transInfoelsep "Not enough CNB!"end end 復制代碼

通過讀取資產余額，來確認到帳情況

if cmd == "aw"assetsInfo = walletAccount.read_assets()p "--------The Wallet Assets List-----------------"assetsInfo["data"].each { |x| puts x["symbol"] + " " +x["balance"] + " " + x["public_key"] +x["account_name"] + " " + x["account_tag"]}p "----------End of Wallet Assets --------------" end 復制代碼

源代碼執行

編譯執行，即可開始交易了.

源代碼執行

編譯執行，即可開始交易了.

• ruby bitcoin-wallet-ruby.rb 運行.

本代碼執行時的命令列表:

• 1: Fetch BTC/USDT Order Book
• 2: Fetch XIN/USDT Order Book
• 3: Fetch ERC20/USDT Order Book
• s1: Sell BTC/USDT
• b1: Buy BTC/USDT
• s2: Sell XIN/USDT
• b2: Buy XIN/USDT
• s3: Sell ERC20/USDT
• s3: Buy ERC20/USDT
• c: Cancel the order
• q: Exit Make your choose(eg: q for Exit!):

完整代碼

轉載于:https://juejin.im/post/5cebd60751882504fc0a65b3

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