class Kaesen::Coincheck

Coincheck Wrapper Class coincheck.com/documents/exchange/api?locale=ja

Public Class Methods

new(options = {}) { |self| ... } click to toggle source
Calls superclass method
# File lib/kaesen/coincheck.rb, line 14
def initialize(options = {})
  super()
  @name        = "Coincheck"
  @api_key     = ENV["COINCHECK_KEY"]
  @api_secret  = ENV["COINCHECK_SECRET"]
  @url_public  = "https://coincheck.com"
  @url_private = @url_public

  options.each do |key, value|
    instance_variable_set("@#{key}", value)
  end
  yield(self) if block_given?
end

Public Instance Methods

balance() click to toggle source

Get account balance. @abstract @return [hash] account_balance_hash

jpy: [hash]
   amount: [BigDecimal] 総日本円
   available: [BigDecimal] 取引可能な日本円
btc [hash]
   amount: [BigDecimal] 総BTC
   available: [BigDecimal] 取引可能なBTC
ltimestamp: [int] ローカルタイムスタンプ
# File lib/kaesen/coincheck.rb, line 90
def balance
  have_key?
  address = @url_private + "/api/accounts/balance"
  h = get_ssl_with_sign(address)
  {
    "jpy"        => {
      "amount"    => BigDecimal.new(h["jpy"].to_s) + BigDecimal.new(h["jpy_reserved"].to_s),
      "available" => BigDecimal.new(h["jpy"].to_s),
    },
    "btc"        => {
      "amount"    => BigDecimal.new(h["btc"].to_s) + BigDecimal.new(h["btc_reserved"].to_s),
      "available" => BigDecimal.new(h["btc"].to_s),
    },
    "ltimestamp" => Time.now.to_i,
  }
end
buy(rate, amount=BigDecimal.new(0)) click to toggle source

Buy the amount of Bitcoin at the rate. 指数注文 買い. @abstract @param [BigDecimal] rate @param [BigDecimal] amount # # minimal trade amount is 0.005 BTC @return [hash] history_order_hash

success: [String] "true" or "false"
id: [String] order id at the market
rate: [BigDecimal]
amount: [BigDecimal]
order_type: [String] "sell" or "buy"
ltimestamp: [int] ローカルタイムスタンプ
timestamp: [int] タイムスタンプ
# File lib/kaesen/coincheck.rb, line 145
def buy(rate, amount=BigDecimal.new(0))
  have_key?
  address = @url_private + "/api/exchange/orders"
  body = {
     "rate"       => rate.to_i,
     "amount"     => amount.to_f.round(4),
     "order_type" => "buy",
     "pair"       => "btc_jpy",
  }
  h = post_ssl_with_sign(address,body)
  {
    "success"    => h["success"].to_s,
    "id"         => h["id"].to_s,
    "rate"       => BigDecimal.new(h["rate"].to_s),
    "amount"     => BigDecimal.new(h["size"].to_s),
    "order_type" => h["order_type"],
    "ltimestamp" => Time.now.to_i,
    "timestamp"  => DateTime.parse(h["created_at"]).to_time.to_i,
  }
end
cancel(id) click to toggle source

Cancel an open order @abstract @param [int or string] order id @return [hash]

success: [bool] status
# File lib/kaesen/coincheck.rb, line 267
def cancel(id)
  have_key?
  address = @url_privat + "/api/exchange/orders/" + id
  body = { }
  h = delete_ssl_with_sign(address, body)
  {
    "success" => h["success"],
  }
end
cancel_all() click to toggle source

Cancel all open orders @abstract @return [array]

success: [bool] status
# File lib/kaesen/coincheck.rb, line 281
def cancel_all
  have_key?
  opens.collect{|h|
    cancel(h["id"])
  }
end
depth() click to toggle source

Get order book. @abstract @return [hash] array of market depth

asks: [Array] 売りオーダー
   price : [BigDecimal]
   size : [BigDecimal]
bids: [Array] 買いオーダー
   price : [BigDecimal]
   size : [BigDecimal]
ltimestamp: [int] ローカルタイムスタンプ
# File lib/kaesen/coincheck.rb, line 67
def depth
  h = get_ssl(@url_public + "/api/order_books")
  {
    "asks"       => h["asks"].map{|a,b| [BigDecimal.new(a.to_s), BigDecimal.new(b.to_s)]},
    "bids"       => h["bids"].map{|a,b| [BigDecimal.new(a.to_s), BigDecimal.new(b.to_s)]},
    "ltimestamp" => Time.now.to_i,
  }
end
market_buy(market_buy_amount=BigDecimal.new("0.0")) click to toggle source

Buy the amount of Bitcoin from the market. 成行注文 買い. @abstract @param [BigDecimal] amount @return [hash] history_order_hash

success: [bool]
id: [String] order id in the market
rate: [BigDecimal]
market_buy_amount: [BigDecimal] amount of JPY
order_type: [String] "sell" or "buy"
ltimestamp: [int] Local Timestamp
# File lib/kaesen/coincheck.rb, line 177
def market_buy(market_buy_amount=BigDecimal.new("0.0"))
  have_key?
  address = @url_private + "/api/exchange/orders"
  body = {
    "market_buy_amount" => market_buy_amount.to_f.round(4),
    "order_type" => "market_buy",
    "pair"       => "btc_jpy",
  }
  h = post_ssl_with_sign(address,body)
  {
    "success"    => h["success"].to_s,
    "id"         => h["id"].to_s,
    "rate"       => BigDecimal.new(h["rate"].to_s),
    "amount"     => BigDecimal.new(h["size"].to_s),
    "order_type" => h["order_type"],
    "ltimestamp" => Time.now.to_i,
    "timestamp"  => DateTime.parse(h["created_at"]).to_time.to_i,
  }
end
market_sell(amount=BigDecimal.new("0.0")) click to toggle source

Sell the amount of Bitcoin to the market. 成行注文 売り. @abstract @param [BigDecimal] amount @return [hash] history_order_hash

success: [bool]
id: [String] order id in the market
rate: [BigDecimal]
amount: [BigDecimal]
order_type: [String] "sell" or "buy"
ltimestamp: [int] Local Timestamp
# File lib/kaesen/coincheck.rb, line 242
def market_sell(amount=BigDecimal.new("0.0"))
  have_key?
  address = @url_private + "/api/exchange/orders"
  body = {
    "amount"     => amount.to_f.round(4),
    "order_type" => "market_sell",
    "pair"       => "btc_jpy",
  }
  h = post_ssl_with_sign(address,body)
  {
    "success"    => h["success"].to_s,
    "id"         => h["id"].to_s,
    "rate"       => BigDecimal.new(h["rate"].to_s),
    "amount"     => BigDecimal.new(h["size"].to_s),
    "order_type" => h["order_type"],
    "ltimestamp" => Time.now.to_i,
    "timestamp"  => DateTime.parse(h["created_at"]).to_time.to_i,
  }
end
opens() click to toggle source

Get open orders. @abstract @return [Array] open_orders_array

@return [hash] history_order_hash
  success: [bool]
  id: [String] order id in the market
  rate: [BigDecimal]
  amount: [BigDecimal]
  order_type: [String] "sell" or "buy"
ltimestamp: [int] Local Timestamp
# File lib/kaesen/coincheck.rb, line 117
def opens
  have_key?
  address = @url_private + "/api/exchange/orders/opens"
  h = get_ssl_with_sign(address)
  h["orders"].map{|x|
    {
      "success"    => "true",
      "id"         => x["id"].to_s,
      "rate"       => BigDecimal.new(x["rate"].to_s),
      "amount"     => BigDecimal.new(x["pending_amount"].to_s),
      "order_type" => x["order_type"],
    }
  }
end
sell(rate, amount=BigDecimal.new(0)) click to toggle source

Sell the amount of Bitcoin at the rate. 指数注文 売り. @abstract @param [BigDecimal] rate @param [BigDecimal] amount # minimal trade amount is 0.005 BTC @return [hash] history_order_hash

success: [String] "true" or "false"
id: [String] order id at the market
rate: [BigDecimal]
amount: [BigDecimal]
order_type: [String] "sell" or "buy"
ltimestamp: [int] ローカルタイムスタンプ
timestamp: [int] タイムスタンプ
# File lib/kaesen/coincheck.rb, line 210
def sell(rate, amount=BigDecimal.new(0))
  have_key?
  address = @url_private + "/api/exchange/orders"
  body = {
    "rate"       => rate.to_i,
    "amount"     => amount.to_f.round(4),
    "order_type" => "sell",
    "pair"       => "btc_jpy",
  }
  h = post_ssl_with_sign(address,body)
  {
    "success"    => h["success"].to_s,
    "id"         => h["id"].to_s,
    "rate"       => BigDecimal.new(h["rate"].to_s),
    "amount"     => BigDecimal.new(h["size"].to_s),
    "order_type" => h["order_type"],
    "ltimestamp" => Time.now.to_i,
    "timestamp"  => DateTime.parse(h["created_at"]).to_time.to_i,
  }
end
ticker() click to toggle source

Get ticker information. @return [hash] ticker

ask: [BigDecimal] 最良売気配値
bid: [BigDecimal] 最良買気配値
last: [BigDecimal] 最近値(?用語要チェック), last price
high: [BigDecimal] 高値
low: [BigDecimal] 安値
volume: [BigDecimal] 取引量
ltimestamp: [int] ローカルタイムスタンプ
timestamp: [int] タイムスタンプ
# File lib/kaesen/coincheck.rb, line 42
def ticker
  h = get_ssl(@url_public + "/api/ticker")
  @ticker =
  {
    "ask"        => BigDecimal.new(h["ask"].to_s),
    "bid"        => BigDecimal.new(h["bid"].to_s),
    "last"       => BigDecimal.new(h["last"].to_s),
    "high"       => BigDecimal.new(h["high"].to_s),
    "low"        => BigDecimal.new(h["low"].to_s),
    "volume"     => BigDecimal.new(h["volume"].to_s),
    "ltimestamp" => Time.now.to_i,
    "timestamp"  => h["timestamp"].to_i,
  }
end

Private Instance Methods

delete_ssl_with_sign(address, body="") click to toggle source
# File lib/kaesen/coincheck.rb, line 402
def delete_ssl_with_sign(address, body="")
  uri = URI.parse(address)
  nonce = get_nonce
  headers = get_headers(address, nonce, body)

  begin
    req = Net::HTTP::Delete.new(uri, headers)
    req.body = body.to_json

    https = initialize_https(uri)
    https.start {|w|
      response = w.request(req)
      case response
        when Net::HTTPSuccess
          json = JSON.parse(response.body)
          return json
        else
          raise ConnectionFailedException, "Failed to connect to #{@name}: " + response.value
      end
    }
  rescue
    raise
  end
end
get_headers(address, nonce, body="") click to toggle source
# File lib/kaesen/coincheck.rb, line 341
def get_headers(address, nonce, body="")
  {
    "ACCESS-KEY"       => @api_key,
    "ACCESS-NONCE"     => nonce.to_s,
    "ACCESS-SIGNATURE" => get_sign(address, nonce, body.to_json),
    "Content-Type"     => "application/json",
  }
end
get_nonce() click to toggle source
# File lib/kaesen/coincheck.rb, line 300
def get_nonce
  pre_nonce = @@nonce
  next_nonce = (1000*Time.now.to_f).to_i

  if next_nonce <= pre_nonce
    @@nonce = pre_nonce + 1
  else
    @@nonce = next_nonce
  end

  return @@nonce
end
get_sign(address, nonce, body) click to toggle source
# File lib/kaesen/coincheck.rb, line 313
def get_sign(address, nonce, body)
  secret = @api_secret
  text = nonce.to_s + address.to_s + body

  OpenSSL::HMAC.hexdigest(OpenSSL::Digest.new("sha256"), secret, text)
end
get_ssl(address) click to toggle source

Connect to address via https, and return json response.

# File lib/kaesen/coincheck.rb, line 321
def get_ssl(address)
  uri = URI.parse(address)
  begin
    https = initialize_https(uri)
    https.start {|w|
      response = w.get(uri.request_uri)
      case response
        when Net::HTTPSuccess
          json = JSON.parse(response.body)
          raise JSONException, response.body if json == nil
          return json
        else
          raise ConnectionFailedException, "Failed to connect to #{@name}."
      end
    }
  rescue
    raise
  end
end
get_ssl_with_sign(address,body="") click to toggle source

Connect to address via https, and return json response.

# File lib/kaesen/coincheck.rb, line 351
def get_ssl_with_sign(address,body="")
  uri = URI.parse(address)
  nonce = get_nonce
  headers = get_headers(address, nonce, body)

  begin
    req = Net::HTTP::Get.new(uri, headers)
    req.body = body.to_json

    https = initialize_https(uri)
    https.start {|w|
      response = w.request(req)
      case response
        when Net::HTTPSuccess
          json = JSON.parse(response.body)
          raise JSONException, response.body if json == nil
          return json
        else
          raise ConnectionFailedException, "Failed to connect to #{@name}: " + response.value
      end
    }
  rescue
    raise
  end
end
initialize_https(uri) click to toggle source
# File lib/kaesen/coincheck.rb, line 290
def initialize_https(uri)
  https = Net::HTTP.new(uri.host, uri.port)
  https.use_ssl = true
  https.open_timeout = 5
  https.read_timeout = 15
  https.verify_mode = OpenSSL::SSL::VERIFY_PEER
  https.verify_depth = 5
  https
end
post_ssl_with_sign(address, body="") click to toggle source
# File lib/kaesen/coincheck.rb, line 377
def post_ssl_with_sign(address, body="")
  uri = URI.parse(address)
  nonce = get_nonce
  headers = get_headers(address, nonce, body)

  begin
    req = Net::HTTP::Post.new(uri, headers)
    req.body = body.to_json

    https = initialize_https(uri)
    https.start {|w|
      response = w.request(req)
      case response
        when Net::HTTPSuccess
          json = JSON.parse(response.body)
          return json
        else
          raise ConnectionFailedException, "Failed to connect to #{@name}: " + response.value
      end
    }
  rescue
    raise
  end
end