Rubyライブラリ"counterparty_ruby"を使ってみる(2/3)
はじめに
前回に引き続き@derosetechのcounterparty_rubyを使ってみます。
目次
- アセットの作成 (Create an Issuance)
- イベント結果のブロードキャスト (Create an Broadcast)
- ギャンブル (Create an Broadcast and Bet)
アセットの作成 (Create an Issuance)
実装
Free Numericアドレスを作成するスクリプトを実装します。
/home/xcp/counterparty_ruby-master/demo_issuance.rb
require 'counterparty_ruby' first_asset = Counterparty::Issuance.new( source: 'mo1kgfktQfRaLMR5SvehDMHLa9Cu7xJp4m', asset: 'A15128863744940229000', description: "Its party time!", divisible: false, quantity: 100 ) transaction_id = first_asset.save! puts "Transaction %s has been entered into the mempool" % transaction_id
実行
サインとブロードキャストも同時に処理してくれます。（便利）
$ ruby -I /home/xcp/counterparty_ruby-master/lib demo_issuance.rb Transaction 137d3ea55727e341d2949eec04bdf43eb816a9b3b60afc0e0eea06268e14cbce has been entered into the mempool
Blockscan(testnet)
イベント結果のブロードキャスト (Create an Broadcast)
実装
「3月1日12AM UTCの金の価格は下落した」という結果をブロードキャストするスクリプトを実装します。
/home/xcp/counterparty_ruby-master/demo_issuance.rb
require 'counterparty_ruby' gold_down = Counterparty::Broadcast.new( source: 'mo1kgfktQfRaLMR5SvehDMHLa9Cu7xJp4m', fee_fraction: 0.05, text: "Price of gold, 12AM UTC March1. 1=inc 2=dec/const", timestamp: 1418926641, value: 2 ) tx_id = gold_down.save! puts "Gold was broadcast down in transaction %s" % tx_id
実行
$ ruby -I /home/xcp/counterparty_ruby-master/lib demo_broadcast.rb Gold was broadcast down in transaction 579210a6c0e7051a441389f14e4907740821a9cc50ee1e7874cdd0cab4df87a3
Blockscan(testnet)
ギャンブル (Create an Broadcast and Bet)
Gemインストール
sudo gem install activesupport
実装
require 'counterparty_ruby'
require 'active_support/time'
require "active_support/core_ext/numeric/time"
TEAM_BLUE_WINS = 1
TEAM_RED_WINS = 2
ALICE_ADDRESS = 'mfs4uCpPkWNTC5L3cWLRjFdgXJ9LP61Ztw'
JOHN_ADDRESS = 'mo1kgfktQfRaLMR5SvehDMHLa9Cu7xJp4m'
ORACLE_ADDRESS = 'mo1kgfktQfRaLMR5SvehDMHLa9Cu7xJp4m'
Counterparty.test!
broadcast_text = "Winner of game, %s. %s=red %s=blue" % [
Time.now.strftime("%I%p %Z %b%-d"), TEAM_RED_WINS, TEAM_BLUE_WINS]
# Announce the availability of a Bet:
# NOTE: All times are in UTC
tx_init = Counterparty::Broadcast.new( source: ORACLE_ADDRESS,
value: Counterparty::Broadcast::OPEN_BROADCAST, timestamp: Time.now.to_i,
text: broadcast_text, fee_fraction: 0.00, allow_unconfirmed_inputs: true ).save!
# Alice Bets on Blue:
tx_bet_on_blue = Counterparty::Bet.new(source: ALICE_ADDRESS,
feed_address: ORACLE_ADDRESS, bet_type: Counterparty::Bet::EQUAL,
deadline: 10.minutes.from_now.to_i, wager_quantity: 5,
counterwager_quantity: 1, expiration: 5,
target_value: TEAM_BLUE_WINS, leverage: Counterparty::Bet::LEVERAGE_BASIS,
allow_unconfirmed_inputs: true ).save!
puts "Alice on Blue: %s" % tx_bet_on_blue
# John Bets on Red:
tx_bet_on_red = Counterparty::Bet.new(source: JOHN_ADDRESS,
feed_address: ORACLE_ADDRESS, bet_type: Counterparty::Bet::EQUAL,
deadline: 10.minutes.from_now.to_i, wager_quantity: 5,
counterwager_quantity: 1, expiration: 5,
target_value: TEAM_RED_WINS, leverage: Counterparty::Bet::LEVERAGE_BASIS,
allow_unconfirmed_inputs: true ).save!
puts "John on Red: %s" % tx_bet_on_red
# Close the broadcast : Team Blue wins!
tx_outcome = Counterparty::Broadcast.new( source: ORACLE_ADDRESS,
value: TEAM_BLUE_WINS, timestamp: 20.minutes.from_now.to_i,
fee_fraction: 0.00,
text: broadcast_text, allow_unconfirmed_inputs: true ).save!
puts "Oracle says: %s" % tx_outcome
実行
$ ruby -I /home/xcp/counterparty_ruby-master/lib demo_bet.rb Alice on Blue: e39856dfe655c696568278a9e887e4e383a05ac89938418014b62b20ca3141c0 John on Red: f351b903ec0559d5529628e39eed2579b3616b2200134648ecdb8dc24bf5f159 Oracle says: aa54029ca6c0be5c4910a7c0b3f2f4cf6449778854ed734ba2fd51ac9f6a494e```
Blockscan(testnet)
まとめ
Blockscan on testnetが公開されたので確認作業がすごく楽になりました。 次回はcounterparty_rubyを使ってSmart Contractsをやります。
