ハムスターを監視するシステムを Raspberry Pi と PHP の Swoole で作った話.pdf

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ϋϜελʔΛ؂ࢹ͢ΔγεςϜΛ Raspberry Pi ͱ PHP ͷ Swoole Ͱ࡞ͬͨ࿩ 2019/04/24 PHPษڧձ@౦ژ Ί΋Γʙ

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ͩΕʁ

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Ί΋Γʙ (@m3m0r7) גࣜձࣾ GameWith Ͱ αʔόʔαΠυ݉ϑϩϯτΤϯυΤϯδχΞ ͱͯ͠ಇ͍ͯ·͢ɻ ϐʔΤΠνϐʔνϣοτσΩϧ 2019 ೥ͷ 5 ݄຤ʹ΍Ί·͢ɻస৬׆ಈதͰ͢ɻ

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͏ͪͷϋϜελʔͷ͝঺հ

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Lily (ϦϦΟ) ੑผɿঁͷࢠ ஀ੜ೔ɿ2018 ೥ 11 ݄ ޷͖ͳ৯΂෺ɿ Ϗεέοτ, Ϧϯΰͷ͔͡Γ໦ ݏ͍ͳ৯΂෺ɿསͷ͔͡Γ໦ झຯɿڅਫثͷϊζϧΛΨδΨδ͢Δ͜ͱɻ૸ΔΑΓ޷͖Έ͍ͨͰ͢

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Έͳ͞ΜɺSwoole Λ࢖ͬͨ͜ͱ͸͋Γ·͔͢ʁ

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ͦͯ͠ɺRaspberry Pi Λ࢖ͬͨ͜ͱ͸͋Γ·͔͢ʁ

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ϊʔϚϧΧϝϥϞδϡʔϧ ໷ؒ༻ΧϝϥϞδϡʔϧ

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͏ͪͷ Raspberry Pi Ͱ͢

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͏ͪͷϋϜελʔઐ༻ͷϥοΫͰ͢

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͜ͷ੺࿮͕ࠓճͷ Raspberry Pi Λ ͓͍ͯΔͱ͜ΖʹͳΓ·͢

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ٕज़ελοΫ

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- Raspbian (Raspberry Pi) - PHP 7.3 - Swoole v4 - Python 3 - React.js (+ Gulp) ओʹ͜ͷ 5 ͭ

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අ༻͸͍͘Βͩͬͨͷ͔ʁ

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- Raspberry Pi 3 Model B * 2 ≒ 5,200 * 2 ≒ 10,000 ԁ - ΧϝϥϞδϡʔϧ * 2 ≒ 5,000 * 2 ≒ 10,000 ԁ - VPS (ࠓճ͸ ConoHa) ≒ 2,500/m ԁ - ϧʔλʔ ≒ 15,000 ԁ Πχγϟϧίετ ≒ 37,500 ԁ ϥϯχϯάίετ ≒ 2,500 ԁ

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ׂͱ͍͍஋ஈ͠·͢

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ϨΠςϯγ͸ʁ

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ମײ 0.5 ඵ͘Β͍

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αʔόʔͷߏ੒

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ࣗ୐ LAN VPS (ConoHa) PiCamera Ϟδϡʔϧ 4 byte ͷunsigned long ͳαΠζσʔλ + picamera.start_recording (mjpeg) ϊʔϚϧΧϝϥ ͔Β TCP Ͱૹ৴ φΠτΧϝϥ͔Β TCP Ͱૹ৴

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ࣗ୐ LAN ଆ͸Ͳ͏ͳ͍ͬͯΔͷ͔ʁ

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- ͦ΋ͦ΋ࣗ୐ͷωοτϫʔΫͷϙʔτ͸։͚ͨ͘ͳ͔ͬͨ - தܧαʔόʔ͓͚͹ສࣄղܾʂ͘͞Βͷ VPS ͷ౦ژϦʔδϣϯ͕ۭ͍ͯ ͳ͔ͬͨͷͰɺࠓճ͸࿩୊෸ಅͷ ConoHa ΛνϣΠε - ϧʔλʔΛ৽ௐͯ͠࠷ߴͷ؀ڥʹͨ͠ - Python3 ͷ picamera Λ࢖ͬͯແݶʹ VPS (ConoHa) ʹૹΓ͚͍ͭͯ·͢

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VPS ଆ͸Ͳ͏ͳ͍ͬͯΔͷ͔ʁ

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- PHP ͷ Swoole ͷ Coroutine Λ࢖ͬͯ Raspberry Pi ͔Βͷσʔλͷड৴ ༻αʔόʔ, ConoHa ΁σʔλΛૹΔͨΊͷૹ৴༻αʔόʔΛ༻ҙ - ͨͬͨ͜Ε͚ͩʂ Simple is best.

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※ Ұ෦ͷίʔυ

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࣮ࡍͷϓϩμΫτͷը໘

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ετϦʔϛϯάͷςετ

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Ͳ͏΍͔ͬͨʁ

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ΧϝϥͷԼͰखΛৼΓͭͭϐʔεΛ͢Δ

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- mjpeg ͸ Motion JPEG ͷུɻ - H.264΋ݕ౼ͨ͠ͷͰ͕͢ɺ ffmpeg Λ௨͢ͱϨΠςϯγ͕ 5 ඵ͘Β͍૿͑Δ໰୊ ͕͋Γ, mjpeg ΛνϣΠε - MIME type ͸ multipart/x-mixed-replace Ͱৗ࣌ίωΫγϣϯΛషΔ - (ͳͷͰɺϒϥ΢βͷλϒ͸ϩʔσΟϯάதͷ··) - ϨΠςϯγ͸ ମײ 0.5 ඵ͘Β͍ɻͦ͜Β΁Μͷ΋ͷΑΓૣ͍ - ΊͬͪΌ͵Δ͵Δʹಈ͘

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Swoole Λ࢖ͬͯΈͯͷײ૝

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- PHP Ͱඇಉظॲཧ࢖͑Δͷਆʂ - Ϗϧυ࣌ʹ —enable-maintainer-zts Λ͠ͳ͍͍ͯ͘ͷͰɺಋೖͷϋʔυ ϧ͕௿͍ ( phpize ͚ͩͰ͍͚Δ ) - Atomic ͕ͤΊͯ serializable ͳ΋ͷ΋࢖͑ΔΑ͏ʹͳΔͱͳ͓خ͍͠ - ݱঢ়Ͱ͖ͳ͍ͷͰɺ Channel Ͱແཧ΍Γ Coroutine ؒͷσʔλͷड͚౉ ͠Λ͍ͯ͠·͢ɻ

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