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EOSでスマートコントラクトを実行してみる
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Shuichi Nagao
April 04, 2018
Programming
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1.1k
EOSでスマートコントラクトを実行してみる
EOSでスマートコントラクトを実行してみる
http://diary.shuichi.tech/entry/2018/03/31/000555
Shuichi Nagao
April 04, 2018
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Transcript
EOSͰεϚʔτίϯτϥΫτΛ ࣮ߦͯ͠ΈΔ @ngo275 2018/4/4 1
ࣗݾհ •ӬඌमҰ ( @ngo275 ) •ձࣾɿAnyPay •Swift / JavaScript (React
Native) / Ruby •͋ͱSolidityReactॻ͍ͨΓ 2
Requirements for Dapps •Support Millions of Users •Free Usage •Easy
Upgrades and Bug Recovery •Low Latency •Sequential Performance •Parallel Performance Dan Larimer https://github.com/EOSIO/Documentation/blob/master/TechnicalWhitePaper.md 3
EOSͱ •εϚʔτίϯτϥΫτΛ࣮ߦ͢ΔϓϥοτϑΥʔ Ϝͱͯ͠ͷϒϩοΫνΣʔϯ •dPoS (delegated Proof of Stake) + aBFT
•1ඵҎʹෆՄٯੑΛอূͰ͖Δ •TaPoS (Transaction as Proof of Stake) •τϥϯβΫγϣϯͷվ͟ΜΛ͙ •WebAssemblyͰίϯύΠϧͨ͠ͷΛಈ͔͢ •C / C++ / RustͰίϯτϥΫτΛ࣮͢Δ 4
EOSͷΠϯετʔϧ •masterͷಈ࡞อূ͠ͳ͍Αɺͱͷ͜ͱ •ͰͱΓ͋͑ͣͬͯΈΔ •(4/3ʹ͜ͷwarning͕ফ͑ͯͨ) 5
EOSͷΠϯετʔϧ $ git clone https://github.com/EOSIO/eos.git --recursive $ cd eos $
./eosio_build.sh $ sudo make install <= ෆཁ͔ •eosio-abigen •eosio-applesedemo •eosio-launcher •eosio-s2wasm •eosiocpp •eosiowd •nodeos ͱ͔͕͑ΔΑ͏ʹͳΔ 6
EOSΛಈ͔ͯ͠ΈΔ # ઃఆϑΝΠϧΛฤू (ฤू༰লུ) $ vim /path/to/eos/config.ini # EOSͷlocal testnetͷσʔϞϯΛىಈ
$ nodeos --config-dir /path/to/eos/ $ cleos wallet create $ cleos wallet list Wallets:["default *"] $ cleos create key Private key: 5K1daHdwBkN6LoCv8SmQipn9tu439k2U2txTWc7xLFmKUCo7TYb Public key: EOS5reEGNsCNcG6JSFRPtRnaP62KX8BjYRy5CHJki9MQ9yMqGitgh σʔϞϯΛىಈ͢Δ walletɾkeyΛ࡞ͯ͠ΈΔ 7
EOSΛಈ͔ͯ͠ΈΔ $ cleos wallet import 5K1daHdwBkN6LoCv8SmQipn9tu439k2U2txTWc7xLFmK UCo7TYb imported private key
for: EOS5reEGNsCNcG6JSFRPtRnaP62KX8BjYRy5CHJk i9MQ9yMqGitgh $ cleos create account eosio helloworld EOS5reEGNsCNcG6JSFRPtRnaP6 2KX8BjYRy5CHJki9MQ9yMqGitgh EOS6MRyAjQq8ud7hVNYcfnVPJqcVpscN5So8Bh tHuGYqET5GDW5CV walletʹઌ΄Ͳ࡞ͨ͠keyΛೖΕΔ ίϯτϥΫτ༻ʹaccount (helloworld) Λ࡞͢Δ 8 $ cleos wallet import 5KQwrPbwdL6PhXujxW37FSSQZ1JiwsST4cqQzDeyXtP7 9zkvFD3 imported private key for: EOS6MRyAjQq8ud7hVNYcfnVPJqcVpscN5So8BhtH uGYqET5GDW5CV walletʹ͢Ͱʹଘࡏ͢Δaccount (eosio) ͱඥ͍ͨkeyΛೖΕΔ
EOSΛಈ͔ͯ͠ΈΔ $ eosiocpp -n helloworld $ cd helloworld $ ls
helloworld.abi helloworld.cpp helloworld.hpp $ eosiocpp -o helloworld.wast helloworld.cpp $ ls helloworld.abi helloworld.cpp helloworld.hpp helloworld.wast ίϯτϥΫτͷܗΛ࡞Δ 9
EOSΛಈ͔ͯ͠ΈΔ # σϓϩΠ͢Δ $ cleos set contract helloworld /path/to/helloworld/ helloworld.wast
/path/to/helloworld/helloworld.abi # ࣮ߦ͢Δ $ cleos push action helloworld transfer '{"from":"currency","to":" eosio","amount":"1"}' --permission helloworld@active σϓϩΠɾ࣮ߦͯ͠ΈΔ 10
·ͱΊ •master͕ಈ͔ͳ͔ͬͨΓυΩϡϝϯτ௨Γʹಈ ͔ͳ͔ͬͨΓਏ͍͜ͱ͕ଟ͍ •Ethereumͷࢿྉ૿͖͑ͯͯDappsͷ։ൃ Μʹͳ͖͕ͬͯͨଞͷϒϩοΫνΣʔϯΛݟΔ ͱྑ͍ͱ͜Ζѱ͍ͱ͜Ζݟ͑ͯࢀߟʹͳΔ •7݄ʹϝΠϯωοτ͕ϦϦʔε͞ΕΔͦ͏ͳͷͰ ͓ͯ͘͠ͱྑͦ͞͏ ϒϩάʹ·ͱΊ͓͖ͯ·ͨ͠ http://diary.shuichi.tech/entry/2018/03/31/000555
11 @ngo275