CrystalでTwitter botを作ってみた / Create a Twitter bot in Crystal - Speaker Deck

CrystalでTwitter botを作ってみた / Create a Twitter bot in Crystal

Speaker Deck

Tweet

Tweet

Slide 1

Slide 1 text

CrystalͰTwitter botΛ࡞ͬͯΈͨ ౦ژ Crystal ษڧձ #1 in ޒ൓ా @mihyaeru21

Slide 2

Slide 2 text

© 2015 Mihyaeru ͓લͩΕΑ • ϛώϟΤϧ @mihyaeru21 • ࠷ۙ͸SwiftͱPerlΛ൒ʑͰ • ͨ·ʹPython੎ • YAPCͰొஃ͢Δ͜ͱʹͳͬͯΨΫϒϧ 2

Slide 3

Slide 3 text

© 2015 Mihyaeru ࡞ͬͯΈͨܥLT • ܀΅ͬͱ https://twitter.com/crybot21 • https://github.com/mihyaeru21/crybot • UserStreamʹܨ͍Ͱϝϯγϣϯͱಉ͡಺༰Λݴ ͍ฦ͚ͩ͢ • ϩʔΧϧͰಈ͔ͯ͠Δ͔Β͙͢ಈ͔ͳ͘ͳΔӡ໋ 3

Slide 4

Slide 4 text

© 2015 Mihyaeru ΊͬͪΌ͠ΐ΅͍σϞ 4

Slide 5

Slide 5 text

ݴ͍ฦ͚ͩ͢Ͱͨ͠

Slide 6

Slide 6 text

© 2015 Mihyaeru CrystalΛ࢖ͬͯΈͨײ૝ • ·ΔͰLLΛॻ͍͍ͯΔײ֮ • ๛෋ͳඪ४Ϟδϡʔϧ͕͋ͬͯศར • Streaming API͸ॳΊ࣮ͯ૷͚ͨ͠ͲͳΜͱ͔ ͳͬͨ 6

Slide 7

Slide 7 text

© 2015 Mihyaeru CrystalΛ࢖ͬͯΈͨײ૝ • ϥΠτʹ͔͚Δ͚Ͳ΋ɺܕͷѻ͍͸ϥΠτͰ ͸ͳ͔ͬͨ • ٽ͘ٽ͘௿Ϩϕϧͳͱ͜ΖΛॻ͍ͨ • υΩϡϝϯτ͸ιʔείʔυ • RubyΛ͋·Γ஌Βͳ͔͔ͬͨΒײͨ͡೉͠͞ 7

Slide 8

Slide 8 text

© 2015 Mihyaeru ࢖ͬͨඪ४Ϟδϡʔϧ • cgi • env • http • json • oauth • openssl • secure_random • socket • time 8

Slide 9

Slide 9 text

© 2015 Mihyaeru cgi • URLΤϯίʔυʹ࢖༻ • cgiۭؒʹ͋ͬͨͷ͔ɻɻɻ • uriͱ͔httpͱ͔Λݟ͍ͯͨ 9

Slide 10

Slide 10 text

© 2015 Mihyaeru env • ؀ڥม਺ͷಡΈࠐΈ • access tokenͱ͔ͷಡΈࠐΈʹ࢖༻ • ී௨ʹHashͬΆ͘࢖͑ͨ 10

Slide 11

Slide 11 text

© 2015 Mihyaeru http (./client ./request) • ΧδϡΞϧʹ࢖͑Δ • ௨৴ͷ్தͰίʔϧόοΫͱ͔ʹσʔλΛྲྀ ͯ͘͠ΕΔ΍͕ͭ(ݟͨݶΓ͸)ແ͔ͬͨ • υΩϡϝϯτ͔ΒભҠ͢Διʔείʔυ͕Ϧ Ϧʔε൛ΑΓ৽ͯ͘͠ϋϚͬͨ 11

Slide 12

Slide 12 text

© 2015 Mihyaeru json • ͱΓ͋͑ͣ JSON.parse • σίʔυ݁Ռ͸͍͢͝ܕʹͳ͍ͬͯͯฦΓ஋ ͷѻ͍͕஍ຯʹ೉͔ͬͨ͠ 12

Slide 13

Slide 13 text

© 2015 Mihyaeru oauth • ௨৴·Ͱ΍ͬͯ͘ΕΔ͔ͱࢥ͚ͬͨͲҧͬͨ • ࢖ͬͨͷ͸ OAuth::Signature • ໘౗ͳAuthϔομΛͺͬͱ࡞Ε͍͍ͯײ͡ • খճΓ͕ޮ͘ײ 13

Slide 14

Slide 14 text

© 2015 Mihyaeru openssl • OpenSSL::SSL::Socket • SSL༻ʹTCPSocketΛแΈࠐΜͰ͚͋͛ͨͩ 14

Slide 15

Slide 15 text

© 2015 Mihyaeru secure_random • nonceΛ࡞Δͷʹར༻ • SecureRandom.hex(32) ͰɺͱΓ͋͑ͣ32ܻ ͷ16ਐ਺จࣈྻ͕ಘΒΕΔ • nonceʹ͸UUIDͷϋογϡΛ࢖͓͏ͱࢥͬͯ ͚ͨͲUUIDϞδϡʔϧ͕ແ͔ͬͨ 15

Slide 16

Slide 16 text

© 2015 Mihyaeru socket • TCPSocket • ίωΫγϣϯΛுΓͬͺͳ͠ͰಡΈଓ͚Δ෦ ෼Ͱ࢖༻ • ൺֱత௿Ϩϕϧͳ෦෼͚ͩͲ৮Γ΍͔ͬͨ͢ 16

Slide 17

Slide 17 text

© 2015 Mihyaeru time • Time.utc_now.to_i ͚͓͚֮ͩ͑ͯ͹  ͻͱ·ͣੜ͖͍͚ͯͦ͏ • Time.now.to_i ͬͯॻ͍ͯͯϋϚͬͨ 17

Slide 18

Slide 18 text

·ͱΊ • ඪ४ϥΠϒϥϦ͕ॆ࣮Ͱऔͬ෇͖΍͍͢ • ϥΠτͳॻ͖৺஍͕ྑ͍ײ͡ • ιʔεՇ