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February 6, 2019 14:02
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require 'JSON' | |
require 'httpparty' | |
HOST = 'https://www.buda.com' | |
def new_order(symbol, amount, type, side, price = nil) | |
side = side == :buy ? 'Bid' : 'Ask' | |
payload = { order: { type: side, price_type: type.to_s, | |
limit: price.to_s, amount: amount.to_s } } | |
path = "/api/v2/markets/#{symbol}/orders" | |
url = "#{HOST}#{path}" | |
HTTParty.post(url, body: payload, headers: headers('POST', path, payload.to_json)) | |
end | |
# Authentication. | |
def generate_nonce | |
(Time.now.to_f.round(3) * 1000).to_i.to_s | |
end | |
def signature(request_type, path, nonce, payload = nil) | |
if payload.nil? | |
"#{request_type} #{path} #{nonce}" | |
else | |
"#{request_type} #{path} #{Base64.strict_encode64(payload)} #{nonce}" | |
end | |
end | |
def headers(request_type, path, payload = nil) | |
nonce = generate_nonce | |
encrypted_signature = OpenSSL::HMAC.hexdigest(OpenSSL::Digest.new('sha384'), | |
ENV.fetch('BUDA_API_SECRET'), signature(request_type, path, nonce, payload)) | |
{ | |
'X-SBTC-APIKEY' => ENV.fetch('BUDA_API_KEY'), | |
'X-SBTC-NONCE' => nonce, | |
'X-SBTC-SIGNATURE' => encrypted_signature, | |
'Content-Type' => 'application/json' | |
} | |
end |
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