nodeeps

jserinfo 5周年イベントで発表した Node-EPs の紹介です。

Transcript

1. nodejs/node-eps
   @yosuke_furukawa
   

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2. JSer.info 5प೥
   ͓ΊͰͱ͏͍͟͝·͢
   

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3. NodeEPS
   • Node Enhancement Proposals (Node EPs)
   

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4. ఏҊ͞Ε͍ͯΔ΋ͷ঺հ
   

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5. C++ Streams
   

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6. C++ Streams
   • Fedor Indutny ͕ఏҊ
   • Node.js ͷ C++ ͷϨΠϠͰ Stream Λ࣮૷͢Δͱ͍͏
   ΋ͷ
   • C++Addon Λ࡞Δͱ͖ʹStreamͰॻ͚Δ
   • ࣮͸Nodeͷcore API ͸طʹ͜ͷC++ Stream͕࢖ΘΕ
   ͍ͯΔɻ
   

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7. C++ Streams
   • ఏҊ͍ͯ͠Δ಺༰͸ྑ͔͕ͬͨͪΐͬͱείʔ
   ϓ͕ҧ͏ͱ͍͏͜ͱͰClose…
   • JSͷAPI͕มΘΔΘ͚Ͱ͸ͳ͍ͷͰɺείʔϓ
   ֎
   • ͱ͸͍͑C++ͷpublic APIʹ͸͍͔ͭͳΔ͔΋
   

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8. ES6 modules interop
   

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10. ES6 modules interop
    • Bradly Meck͕ఏҊ
    • interoperability for ES6 modules and node’s existing
    modules
    • create Registry Object (Ϟδϡʔϧͷঢ়گ(fetch, translate,
    ready ౳)Λ·ͱΊ͓ͯ͘Map instance) for interop
    • (∩´∀ʆ)∩ƂŖŘ
    

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11. ES6 modules interop
    • JSͷϨΠϠ͡Όͳͯ͘ɺC++ͷϨΠϠͰ
    fallbackͤͯ͞CJSͳͷ͔ES6ͳͷ͔try͢Δ
    // ٖࣅίʔυ
    try {
    v8::Script::Compile // ES6ͰίϯύΠϧͰ͖Δ͔Ͳ͏͔
    }
    catch (e) {
    v8::Script::CompileModule // CJSͰίϯύΠϧͯ͠ΈΔ
    }
    

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12. ES6 modules interop
    • require͕ߦΘΕͨΒ
    1. ·ͣ͸CJS ͔ ES6 ͔ΛνΣοΫ͢Δ
    2. ΋͠ CJS ͩͬͨΒ
    1. ଈ࣌ධՁͯ͠ module.exportsʹೖ͍ͬͯΔΦϒδΣΫτ͕͋Ε͹࣋ͬͯ͘Δ
    3. ΋͠ ES6 ͩͬͨΒ
    1. import / export Λparse͢Δ
    2. ࠶ؼతʹ require Λ࣮ߦͯ͠αϒϞδϡʔϧΛऩू͢Δ
    3. ͢΂ͯͷαϒϞδϡʔϧΛ import ͔Βݺ͹ΕΔΑ͏ʹϚοϓ͢Δ
    4. ධՁ͢Δ
    

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13. ES6 modules interop
    • require͕ߦΘΕͨΒ
    1. ·ͣ͸CJS ͔ ES6 ͔ΛνΣοΫ͢Δ
    2. ΋͠ CJS ͩͬͨΒ
    1. ଈ࣌ධՁͯ͠ module.exportsʹೖ͍ͬͯΔΦϒδΣΫτ͕͋Ε͹࣋ͬͯ͘Δ
    3. ΋͠ ES6 ͩͬͨΒ
    1. import / export Λparse͢Δ
    2. ࠶ؼతʹ require Λ࣮ߦͯ͠αϒϞδϡʔϧΛऩू͢Δ
    3. ͢΂ͯͷαϒϞδϡʔϧΛ import ͔Βݺ͹ΕΔΑ͏ʹϚοϓ͢Δ
    4. ධՁ͢Δ
    

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14. ES6 modules interop
    • ·ͩσΟεΧογϣϯத…
    • whatwg-loaderͷਓ΋ؚΊͯ࿩͍ͯ͠Δ͕ɺ
    ίΞϝϯόʔͷ൓Ԡ͕ͳ͍
    

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15. Buffer.alloc / Buffer.zalloc /
    Buffer.from
    

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16. Buffer.alloc / Buffer.zalloc /
    Buffer.from
    • James N Snell ͕ఏҊ
    • ৽͘͠Buffer APIʹίϯετϥΫτ͢Δํ๏͕
    ૿͑Δ
    • ͋ͱ new Buffer ͕ soft deprecated ʹͳΔ…
    

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17. soft deprecated
    new Buffer …
    

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18. Buffer.alloc / Buffer.zalloc /
    Buffer.from
    • new Buffer(Number) ͸ةݥ
    • ༩͑ΒΕͨ਺ࣈͷαΠζ෼ϝϞϦΛୣ͏
    • ΍Ζ͏ͱࢥ͑͹αʔόʔͰ೚ҙͷϝϞϦαΠ
    ζ֬อͰ͖Δ => DoS ߈ܸͰ͖Δ
    

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19. Buffer.alloc / Buffer.zalloc /
    Buffer.from
    var server = http.createServer(function (req, res) {
    var data = ''
    req.setEncoding('utf8')
    req.on('data', function (chunk) {
    data += chunk
    })
    req.on('end', function () {
    var body = JSON.parse(data)
    res.end(new Buffer(body.str).toString('hex'))
    })
    })
    server.listen(8080)
    ຊདྷ͜͜͸stringΛ
    ظ଴͍ͯ͠Δ
    

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20. Buffer.alloc / Buffer.zalloc /
    Buffer.from
    var server = http.createServer(function (req, res) {
    var data = ''
    req.setEncoding('utf8')
    req.on('data', function (chunk) {
    data += chunk
    })
    req.on('end', function () {
    var body = JSON.parse(data)
    res.end(new Buffer(body.str).toString('hex'))
    })
    })
    server.listen(8080)
    body.str = 1,000,000
    

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21. Buffer.alloc / Buffer.zalloc /
    Buffer.from
    var server = http.createServer(function (req, res) {
    var data = ''
    req.setEncoding('utf8')
    req.on('data', function (chunk) {
    data += chunk
    })
    req.on('end', function () {
    var body = JSON.parse(data)
    res.end(new Buffer(body.str).toString('hex'))
    })
    })
    server.listen(8080)
    body.str = 1,000,000
    .CZUFͷϝϞϦ͕֬อͰ͖Δɺ΋ͬͱ૿΍͢ͱଟ෼00.Ωϥʔʹࡴ͞ΕΔ
    ҐͷϝϞϦ΋֬อͰ͖ͪΌ͏ɻ
    

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22. ΍͹͍…
    

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23. Buffer.alloc / Buffer.zalloc /
    Buffer.from
    • ࣮ࡍʹ ws ͍ͬͯ͏Ϟδϡʔϧʹͦͷඃ֐͕͋
    Γ͏Δͱ͍͏͜ͱͰطʹΞοϓσʔτࡁΈɻ
    • security ৘ใ΋ใࠂࡁΈ
    

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24. Buffer.alloc / Buffer.zalloc /
    Buffer.from
    • new Buffer ͸ deprecated ʹͳΓͦ͏
    • ͦͷ୅ΘΓ৽͍͠ઐ༻ίϯετϥΫλ͕૿͑
    Δ
    • ࠓͷ new Buffer Ͱ੍ݶ஋Λ࣋ͭΑ͏ʹͳΔ͔
    ౳ͷৄࡉ͸·ͩdiscussing
    

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25. ·ͱΊ
    

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26. ·ͱΊ
    • C++ Stream ͱ͔ఏҊ͞ΕͯΔ
    • ES6 modules interop ͷఏҊ΋͋Δʂ
    • new Buffer ࢖Θͳ͍Α͏ʹ…

    (wsΞοϓσʔτ͍ͯͩ͘͠͞Ͷ…)
    

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