Goを使ったセンサーデータ収集基盤の事例のお話 / golang.tokyo 26 LT

golang.tokyo #26 LT
https://golangtokyo.connpass.com/event/147175/

Transcript

1. GoΛ࢖ͬͨ
   ηϯαʔσʔλऩूج൫
   ͷ
   ࣄྫͷ͓࿩
   @takeshinoda
   

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2. ࣗݾ঺հ
   • ࣰా ݈ (͠ͷͩ ͚ͨ͠)
   
   • @takeshinoda
   
   • MODE, Inc ۈ຿
   
   • ීஈ͸Rubyist
   
   • ன͸GoͱTypeScriptॻ͍ͯ·͢
   
   • Go΋݁ߏ޷͖
   

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3. MODE, Inc.
   • γϦίϯόϨʔʹͯ2014೥૑ۀ
   
   • B2BͳIoTج൫Λఏڙ
   
   • ϦΞϧͷσʔλऩू
   
   • ϦΞϧσʔλ࢖ͬͨϏδωεͷ͓ख఻͍
   

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5. ϓϩμΫγϣϯ΁ͷ͓ख఻͍
   MODE Ϋϥ΢υ
   ࣌ܥྻ DB
   WebHook
   Πϕϯτج൫ OTA (Over-the-Air)
   ϩάऩू
   σόΠε؅ཧ
   ೝূ Users / Devices / API access
   MODE ήʔτ΢ΣΠ
   MODE αʔϏε
   Ϗδωεɾۀ຿αʔϏε
   ݱ࣮σʔλ ηϯαʔ/֤छػثσʔλ
   ͜͜ͷϨΠϠʔʹରͯ͠
   PoCϨϕϧ͔Β
   ϓϩμΫγϣϯϨϕϧ·Ͱͷ
   ٕज़Λఏڙ͢Δ
   

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6. MODE Ϋϥ΢υ
   MODE ήʔτ΢ΣΠ
   MODE αʔϏε
   Ϣʔβʔɾఏܞاۀ
   ݱ࣮ੈք
   Sensor
   Cloud
   Mobility
   Cloud
   Factory
   Cloud
   ࣌ܥྻ DB ࣌ܥྻ DB/SDS ࣌ܥྻ DB
   

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7. MODE
   Gateway
   PLC
   Bluetooth
   MODbus
   GPS
   OBD-II
   ControllerPC
   RS-485
   Bluetooth LE
   MODbus/RTU
   NMEA 0183
   CANbus / ISO9141-2
   Smb protocol
   MODE
   Platform
   Application
   TSDB
   Event
   Dispatcher
   Manage
   Devices
   OTA
   Update
   Authentica
   tion
   Application
   MQTT
   REST API
   REST API
   

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8. MODE
   Gateway
   PLC
   Bluetooth
   MODbus
   GPS
   OBD-II
   ControllerPC
   RS-485
   Bluetooth LE
   MODbus/RTU
   NMEA 0183
   CANbus / ISO9141-2
   Smb protocol
   MODE
   Platform
   Application
   TSDB
   Event
   Dispatcher
   Manage
   Devices
   OTA
   Update
   Authentica
   tion
   Application
   MQTT
   REST API
   REST API
   Go: Gateway, Server side
   TypeScript: Frontend, Gateway
   

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9. Gateway
   OS: Ubuntu 16.04, 18.04, Yocto…
   Gateway main
   process
   Node process
   WiFi / 3G
   OTA Updater
   Log collector
   

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10. Go͸IoTͰศར
    Intel, ARM
    Ubuntu, Yocto
    Intel NUC, VIA, OpenBlocks, etc…
    

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11. Go͸IoTͰศར
    • ࠷ॳظ͸ES6
    
    • ΫϩείϯύΠϧͷखؒͷ໰୊
    
    • ඇಉظσʔλ௨৴ͷ੍ޚͷ؆ศ͞
    
    • select, channel, goroutine
    
    • σϓϩΠͷ؆ศ͞
    
    • ͜ͷྖҬͷ؆ศ͞ͱͦͦ͜͜ศརͳܕ
    

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12. Server side
    ඇಉظॲཧͱ
    ಉظॲཧ͕ࠞͬͯ͟Δ
    Gateway
    Eventॲཧ
    ࠶ૹॲཧ
    ࠶઀ଓॲཧ
    Event
    όοϑΝϦϯά
    Command
    Synced data
    

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13. Go͸IoTͰศར
    • ඇಉظ෦෼͸channelͱgoroutine
    
    • ಉظ෦෼͸௨ৗͷίʔυ
    
    • channelͱselect͕ͳ͍৔߹ɺͨ͘͞ΜͷΠϕ
    ϯτۦಈͰσʔλ͕ൃੜ͢ΔσʔλΛඇಉظ
    ॲཧͰॻ͘ͷ͕େม
    
    • node΋EventEmitterͳͲͰదͯ͠͸͍ͨ
    
    • ֤छGWσϓϩΠͷ؆ศ͞ͱσόοάͷ؆ศ
    ͞ͰGo͕࠾༻͞Εͨ
    

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14. Πϕϯτൃੜॲཧ TS
    for await (const sensorData of sensorModule.dataIterator()) {
    try {
    await timeout(dataSender.sendData(sensorData), timeout);
    } catch (error) {
    logger.error(`Failed: ${error}`);
    }
    }
    async* dataIterator(): AsyncIterable {
    while (true) {
    let sensorData: SensorData[];
    try {
    sensorData = await this.next();
    } catch (error) {
    throw error; // break loop
    }
    yield sensorData;
    }
    }
    

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15. Πϕϯτൃੜॲཧ Go
    select {
    case l := <- serial.Rx:
    return string(l), nil
    case <-time.After(timeout):
    return "", errors.New(“readtimeout”)
    }
    for {
    buf := make([]bytes, 1024)
    if _, err := s.Read(buf); err != nil {
    …
    }
    serial.Rx <- buf
    }
    

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16. Go͸IoTͰศར
    • Ͳ͕ͬͪྑ͍͔͸͘͢͝೉͍͠
    
    • Ͳͬͪ΋ͳΜͱ͔ͳΔ
    
    • node΋Go΋ඇಉظॲཧ͸༏ल
    
    • ݸਓతʹ͸Goͷํ͕҆৺
    
    • TSతͳॻ͖ํʹ׳Εͯͳ͍ͷ΋΋ͪΖΜ͋Δ
    
    • ͔͠͠nodeͰ΍Δͱ͖ʹ͸TS͸҆͘͢͝৺
    

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17. ͭ͠΋Μ
    

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18. ͋Γ͕ͱ͏
    ͍͟͝·ͨ͠
    

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