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BAD_REQUEST = 400 をめぐる問い。マジックナンバーは可読性を下げるのか? / ...
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qsona
August 03, 2019
Technology
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BAD_REQUEST = 400 をめぐる問い。マジックナンバーは可読性を下げるのか? / bad request is 400
すえなみチャンス暑気払い
qsona
August 03, 2019
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Transcript
BAD_REQUEST = 400 ΛΊ͙Δ͍ɻ ϚδοΫφϯόʔՄಡੑΛ Լ͛Δͷ͔? @qsona (FiNC Technologies)
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ࠓ͢͜ͱ • BAD_REQUEST = 400 ͷྫ͔Β ϚδοΫφϯόʔͷੋඇͳͲʹΒ·ͤͯٞ͢Δ • ͦͷաఔͰɺʮઃܭͷݴޠԽʯͷॏཁ͞Λ ͋ΒͨΊͯڧௐ͍ͨ͠
ࠓͷείʔϓ֎ • ͦͦεςʔλείʔυ Λ͍͚Δ͖͔ • ྫ: validation error ͷͱ͖ʹ 400
BAD REQUEST Λฦ͖͔͢Ͳ͏͔ • ͜Ε͜ΕͰਂ͍
૾ͯͨͭ͠
ͳΜͱͳ͍͘ͳίʔυ
ࡶͳࢦఠ • BAD REQUEST ͕ 400ͱ͔ ͩΕͰͬͯΔΑͶ? • ࡶͳݴޠԽ
ॏཁͳࢦఠ
ΫΠζ • HTTPεςʔλείʔυ 409
ΫΠζ • HTTPεςʔλείʔυ 409 ҎԼͷ͏ͪͲΕ • PERMANENT REDIRECT • INSUFFICIENT
STORAGE • CONFLICT • PROCESSING
ΫΠζ • HTTPεςʔλείʔυ 409 ҎԼͷ͏ͪͲΕ • 308 PERMANENT REDIRECT •
507 INSUFFICIENT STORAGE • 409 CONFLICT • 102 PROCESSING
ྑ͍ࢦఠ
վળҊ
• ϚδοΫφϯόʔͷੋඇ • HTTPεςʔλείʔυΛͰϕλॻ͖͢Δ͜ͱͷੋඇ
ϚδοΫφϯόʔΛΊ͙Δ • "Մಡੑ͕ѱ͍" (not readable) • ࡶͳݴޠԽ
ϚδοΫφϯόʔͷՄಡੑ͕͍ͱ • Կʹର͢Δ͔͕ͩΘ͔Βͳ͍Α • ࣗମͷࠜڌ(ଥੑ)͕Θ͔Βͳ͍Α • ڞ௨Խ͞Εͯͳ͍Α • ϚδοΫφϯόʔѱɺແ༻
Կʹର͢Δ͔͕ͩΘ͔Βͳ͍Α • price * 1.08 • ͦͦ 1.08 ͕͜͜ʹग़͖͍ͯͯΔཧ༝͕Θ͔Βͳ͍ •
ԋࢉͯ͠Δͱ͖ʹى͖͕ͪ
Կʹର͢Δ͔͕ͩΘ͔Βͳ͍Α • ؔ(ϝιου)ݺͼग़͠ʹΛ͢ͱ͖ɺ ͜ͷى͜Βͳ͍ • ϝιουఆٛΛݟΕΘ͔ΔͷͰ • લͷྫͰ TAX_RATE ఆΛఆٛ͢ΔΑΓɺ(ྫ͑)
price_included_tax(base_price) ϝιουΛఆٛͨ͠΄͏͕͍͍
ࣗମͷࠜڌ(ଥੑ)͕Θ͔Βͳ͍Α • 409 ͕εςʔλείʔυΛදͯ͠ΔͷΘ͔Δ͕ɺ ͳͥ 409 ͳͷ͔͕Θ͔Βͳ͍ • ׂͱϚΠφʔͳͳؾ͕ͯ͠Δɻ͜Εʹ͍ͭͯޙड़
ڞ௨Խ͞Εͯͳ͍Α • ڞ௨Խ͖͢ͳΒͯ͘͠Ε • Ͳ͏͍͏࣌ʹڞ௨Խ͖͔͢Θ͔Δͳ?
const LIMIT = 10;
const LIMIT = 10; • Լͷ͏ͪ1ͭղܾ͍ͯ͠ͳ͍ • Կʹର͢Δ͔͕ͩ Θ͔Βͳ͍Α
• ࣗମͷࠜڌ(ଥੑ)͕ Θ͔Βͳ͍Α • ڞ௨Խ͞Εͯͳ͍Α
Ξϯέʔτ
ͷதͰͷਖ਼ղ
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֮͑Δඞཁͳ͍ • 409 => conflict άάΕҰॠͰग़ͯ͘Δ • ඞཁʹͳΔසͷ • ස͕ଟ͍ͳΒ͔֬ʹ͚ͩͲɺ
ͦΜͳʹ͠ΐͬͪΎ͏͋Δ...?
ͲͪΒͷใྔ͕େࣄ͔? • 409 • ༷ɺΠϯλʔϑΣΠε • conflict • ҙຯɺ࣮ʹ͍ۙ
None
ΠϯλʔϑΣΠεͷॏཁੑ • ྫ͑ OpenAPI 3 • Web API ͷ༷ͷ υΩϡϝϯτ
• ͜͜ʹ `409` ͱͰ ॻ͘
4xx = Client Error • 409 ͩͬͨΒͱΓ͋͑ͣ Client Errorͩͱ͍͏ͱ͜Ζ·Ͱ Θ͔Δ
• Conflict ͬͯݴΘΕͯΑ͘Θ͔Βͳ͘ͳ͍...?
·ͱΊ • ؒҧ͍ͳ͘೦ͳίʔυݴ͍ա͗ͩͬͨɺ͢·Μ • ϚδοΫφϯόʔ࠷ߴ • ઃܭݴޠԽΛ͍ͯ͜͠͏ • ͑͢ͳΈνϟϯεࣗΒͷखͰ௫Ήͷ
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