用Ruby在去中心化交易所OceanOne上掛單買賣任意ERC20 token

在上一課中，咱們介紹瞭如何在OceanOne交易比特幣。OceanOne支持交易任何Mixin Network上的token，包括全部的ERC20和EOS token，不須要任何手續和費用，直接掛單便可。下面介紹如何將將一個ERC20 token掛上OceanOne交易！在掌握了ERC20 token以後，就能夠把任何token在Ocean上買賣。

此處咱們用一個叫作Benz的ERC20 token爲例。這個token已經被充值進Mixin Network，你能夠在區塊鏈瀏覽器看到這個token在Mixin Network內部的總數和交易

預備知識:

先將Benz幣存入你的錢包，而後使用getAssets API讀取它的UUID.

取得該幣的UUID

調用 getAssets API 會返回json數據, 如:

• asset_id 幣的UUID.
• public_key 該幣的當前錢包的地址.
• symbol 幣的名稱. 如: Benz.

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

調用 read_assets API的完整輸出以下:

"--------The Wallet Assets List-----------------"
Benz 10.03 0x822664c2EFb27E2Eb4c4286f421B4BF6FB943fC6
ETH 0 0x822664c2EFb27E2Eb4c4286f421B4BF6FB943fC6
EOS 0 eoswithmixin b0adfae2f8828d15e11cb1fbe23d6096
USDT 1 1KB4RbV5W4MNybpjcJjULKNVXubfR5MJqA
CNB 0.99999995 0x822664c2EFb27E2Eb4c4286f421B4BF6FB943fC6
BTC 0 1KB4RbV5W4MNybpjcJjULKNVXubfR5MJqA
"----------End of Wallet Assets --------------"
-------------------------------------------------------------------------

限價掛單

• 掛限價買單 低於或者等於市場價的單.
• 掛限價賣單 高於或者是等於市場價的單.

OceanOne支持三種基類價格: USDT, XIN, BTC, 即: Benz/USDT, Benz/XIN, Benz/BTC, 這兒示範Benz/USDT.

限價掛賣單.

新幣掛單後,須要等一分鐘左右，等OceanOne來初始化新幣的相關數據.

if ocmd == "s3"
  p "Input the price of ERC/USDT: "
  bprice = gets.chomp
  p "Input the amount of ERC20_BENZ: "
  amount = gets.chomp
  memo = Utils.GenerateOceanMemo(USDT_ASSET_ID,"A",bprice)
  p memo
  assetsInfo = walletAccount.read_asset(ERC20_BENZ)
  if assetsInfo["data"]["balance"].to_f > 0 && assetsInfo["data"]["balance"].to_f >= amount.to_f
    transInfo = walletAccount.create_transfer(walletAccount.encrypt_pin(DEFAULT_PIN),
                                      {
                                        asset_id: ERC20_BENZ,
                                        opponent_id: OCEANONE_BOT,
                                        amount: amount,
                                        trace_id: SecureRandom.uuid,
                                        memo: memo
                                      })
    p transInfo
    p "The Order id is " + transInfo["data"]["trace_id"] + " It's needed by cancel-order!"
  else
    p "Not enough ERC20_BENZ"
  end
end

限價掛買單.

新幣掛單後,須要等一分鐘左右，等OceanOne來初始化新幣的相關數據.

if ocmd == "b3"
  p "Input the price of ERC20/USDT: "
  bprice = gets.chomp
  p "Input the amount of USDT: "
  amount = gets.chomp
  memo = Utils.GenerateOceanMemo(ERC20_BENZ,"B",bprice)
  p memo
  assetsInfo = walletAccount.read_asset(USDT_ASSET_ID)
  if assetsInfo["data"]["balance"].to_f >= 1 && assetsInfo["data"]["balance"].to_f >= amount.to_f
    transInfo = 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 transInfo
    p "The Order id is " + transInfo["data"]["trace_id"] + " It's needed by cancel-order!"
  else
    p "Not enough USDT"
  end
end

讀取幣的價格列表

讀取幣的價格列表，來確認掛單是否成功!

if ocmd == "3"
  Utils.OceanOneMarketPriceRequest(ERC20_BENZ, 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).body
   body = ""
   redData = data.readpartial
   while  redData != nil
     body = body + redData
     redData = data.readpartial
   end
   result = ActiveSupport::JSON.decode(body).with_indifferent_access
   result["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

ERC20相關的操做指令

Commands list of this source code:

• 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!):

完整的代碼

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