Go + Google Cloud Functions を使ったSlackのThreadにも対応したbotを簡単に作る方法

Slack Dev Meetup Tokyo #1 LT 資料です。

Transcript

1. (P(PPHMF$MPVE'VODUJPOTΛ࢖ͬ
   ͨ4MBDLͷUISFBEʹ΋ରԠͨ͠CPUΛ؆
   ୯ʹ࡞Δํ๏
   λΠτϧ͕௕͗ͨ͢LUZLPHN
   4MBDL%FW.FFUVQ5PLZP-5ࢿྉ
   

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2. XIPBNJ
   w !LUZLPHN LPHVNB
   
   w ϝϧΧϦ43&
   w ࠷ۙ(PΛۀ຿Ͱͨ·ʹॻ͍͍ͯΔϨϕϧ
   w ʮ4MBDL(PͳΒͦͷ͘Β͍؆୯ʹԼ४උͰ͖ΔΑʯͱ͍͏͜ͱΛ఻
   ͑ʹདྷ·ͨ͠
   w 43&-PVOHFͱ͍͏ίϛϡχςΟͷӡӦ׆ಈΛ͍ͯ͠·͢ɻ
   

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3. ຊ೔఻͍͑ͨ͜ͱ
   w 4MBDL(P$MPVE'VODUJPOTͷ૬ੑ
   w (PΛ࢖ͬͨ4MBDLͷ5ISFBEରԠํ๏
   w (Pք۾Ͱ͸Α͘஌ΒΕͨOMPQFTTMBDL͕DPPPPPPPPM
   w ͦΕΒ#PU ͦΕҎ֎΋
   ࡞੒͸ɺαʔόͱӡ༻අΛ༻ҙͤͣʹؾָʹ࢝Ί
   ΒΕΔ
   

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4. $MPVE'VODUJPOTͱ͸
   w ΠϕϯτυϦϒϯͳαʔόϨείϯϐϡʔτϓϥοτ
   ϑΥʔϜ
   w (BUFXBZ͸ແͯ͘΋ಈ͘
   w &YUFOTJCMF4FSWJDF1SPYZ &41
   Λ࢖ͬͯ(BUFXBZ
   FOEQPJOUߏ੒΋΋ͪΖΜͰ͖·͢ɻ
   w ͦͷ··ؔ਺ΛઃஔͰ͖Δ HPCVJMEෆཁ
   
   w ࣗಈతʹεέʔϧ׌ͭɺ)"
   w ଞͷ($1αʔϏεʹ઀ଓ֦ͯ͠ு͕Մೳ
   w ແྉ࿮͕ଘࡏ͢Δ
   w ݄ؒͰɺສݺͼग़͠ ສඵ (#ԼΓτϥ
   ϑΟοΫ ೥݄ʹ(PSVUJNF͕CFUBSFMFBTF
   IUUQTDMPVEHPPHMFDPNGVODUJPOT
   

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5. $MPVE'VODUJPOT
   ଞͷ($1αʔϏεʹ઀ଓ֦ͯ͠ு͕Մೳ
   w $MPVE1VC4VC
   w $MPVE4UPSBHF
   w )551
   w 4UBDLESJWFS-PHHJOH
   w 'JSFCBTF
   w $MPVE42- $POOFDU71$ FUD
   
   

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6. ࣄલ४උ
   w 4MBDLͷ༻ҙ
   w (PPHMF$MPVE1MBUGPSN ($1
   ͷΞΧ΢ϯτΛ࡞੒
   w HDMPVEίϚϯυ͕࢖͑ΔΑ͏ʹ(PPHMF$MPVE4%,Λ*OTUBMM
   w IUUQTDMPVEHPPHMFDPNTELJOTUBMM
   w HDMPVE͸ݱࡏ1ZUIPO͕ඞཁͳͷͰɺQZFOW౳ͰXPSLJOH
   EJSFDUPSZʹQZFOWMPDBMYͰ؅ཧ͢Δͱྑ͍Ͱ͢
   

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7. ࠓճͷߏ੒ͱ؀ڥʹ͍ͭͯ
   w ࠓճ͸-5ͳͷͰλΠτϧʹ͋Δ4MBDL5ISFBEʹରԠͨ͠#PUΛ࡞੒͢Δ
   ํ๏ͱͦͷઆ໌͚ͩʹ಺༰Λ΄΅ߜΓ·͢
   w 4MBDLࣗମ͸4MBTI$PNNBOE΍#PU΁ͷNFOUJPOʹΑΔ൓ԠͳͲ༷ʑ
   ͳํͰରԠͰ͖·͢
   w 4MBDLͷ35."1*Λ࢖༻
   w (PͷOMPQFTTMBDLNPEVMFΛ࢖༻
   

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8. ࠷খ$PEF
   package gcf_slack_sample
   import (
   "net/http"
   "os"
   "strings"
   "github.com/nlopes/slack"
   )
   var (
   threadTs slack.RTMsgOption
   )
   type SlackParams struct {
   accessToken string
   botUserID string
   rtm *slack.RTM
   }
   func PostMessage(w http.ResponseWriter, r *http.Request) { // Ҿ਺͸০ΓɻCloud Functionͷhttp trigger Ͱඞཁ
   params := SlackParams{
   accessToken: os.Getenv("ACCESS_TOKEN"),
   botUserID: "",
   }
   api := slack.New(params.accessToken)
   params.rtm = api.NewRTM()
   go params.rtm.ManageConnection()
   go func() {
   for msg := range params.rtm.IncomingEvents {
   switch ev := msg.Data.(type) {
   case *slack.ConnectedEvent:
   params.botUserID = ev.Info.User.ID
   case *slack.MessageEvent:
   if !strings.Contains(ev.Msg.Text, params.botUserID) {
   continue
   }
   threadTs = slack.RTMsgOptionTS(ev.ThreadTimestamp)
   params.rtm.SendMessage(params.rtm.NewOutgoingMessage("Sample TEST", ev.Channel, threadTs))
   }
   }
   }()
   ࣮͸͜Ε͚ͩͰɺຊ୊
   ͷʮ4MBDLͷ5ISFBEʹ
   ରԠͨ͠#PUPO
   $MPVE'VODUJPOTΛ(P
   Ͱ࡞Δʯ͜ͱ͸Մೳ
   WBSTZBNM͸ߦ͚ͩ$SFEFOUJBM؅ཧ
   Ͱผ్͋Γ·͢ɻޙ΄Ͳઆ໌
   
   HPNPEVMFTͷTFUVQ౳ͷઆ໌͸ল͖
   ·͢
   

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9. த਎ͷઆ໌
   

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10. FOEQPJOUؔ਺
    w (PPHMF$MPVE'VODUJPOTͷ࢓༷
    ͰɺNBJOؔ਺Ҏ֎͕ඞཁʹͳΓ·
    ͢ɻ
    w ྫͰ͸ɺ1PTU.FTTBHF
    
    w Ͳ͔͜Β։࢝͞ΕΔ͔Θ͔Γ΍͍͢Α
    ͏ʹNBJOHP΍GVODUJPOHPͱ͍͏
    pMF໊ʹͯ͠ҎԼͷΑ͏ʹ։࢝͢Δؔ
    ਺Λ࡞Γ·͢
    package gcf_slack_sample // <= ࣮͸ԿͰ΋ok
    // ..
    func PostMessage(w http.ResponseWriter, r
    *http.Request) { // Ҿ਺͸০ΓɻCloud
    Functionͷhttp trigger Ͱඞཁ
    params := SlackParams{
    accessToken: os.Getenv("ACCESS_TOKEN"),
    botUserID: "",
    }
    

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11. 4MBDLͷ5ISFBEରԠ
    w TMBDL35.TH0QUJPO
    w ͜Ε͸ޙʹઆ໌͢Δ35.TH0QUJPO54 FW5ISFBE5JNFTUBNQ
    ʹؔ܎͠
    ·͢ɻ
    var (
    threadTs slack.RTMsgOption
    )
    

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12. 4MBDLͷ5ISFBEରԠ
    ҎԼ͕4MBDLͷ5ISFBEͰͦͷ࣌ʹऔಘ͞ΕΔ5ISFBE5JNF4UBNQΛ࣋ͪ·
    ͢
    ͜ͷ5ISFBE5JNF4UBNQΛར༻͢Δ͜ͱͰ#PU͕4MBDLͷ5ISFBEʹରԠ͢
    ΔΑ͏ʹͳΓ·͢
    threadTs = slack.RTMsgOptionTS(ev.ThreadTimestamp)
    

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13. 4MBDLͷ5ISFBEରԠ
    35.TH0QUJPO54 FW5ISFBE5JNFTUBNQ
    ͱ͸Կͳͷ͔
    go func() {
    for msg := range s.rtm.IncomingEvents {
    switch ev := msg.Data.(type) {
    ͜ͷFW͸ɺͦͷલͷ35.ͷ*ODPNJOH&WFOUT͔Β&WFOUUZQF͝ͱʹTXJUDI͠ɺͦͷ&WFOUEBUBΛFWʹೖΕ͍ͯ·͢
    case *slack.MessageEvent:
    // ..
    threadTs = slack.RTMsgOptionTS(ev.ThreadTimestamp)
    .FTTBHF&WFOUΛड͚औͬͨλΠϛϯάͰɺͦͷૹ৴ݩͷTMBDLͷUISFBEʹରԠ͢ΔͨΊʹ
    ͦͷ࣌఺ͷ5ISFBE5JNF4UBNQΛ࢖༻͠·͢
    ͢ͳΘͪɺ͜ͷ.FTTBHF&WFOU͕࢝·ͬͨ࣌ͷ5ISFBE5JNFTUBNQ͕ೖΓ·͢ɻ
    

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14. OMPQFTTMBDLଆͷྲྀΕ
    ϖʔδ਺ͷؔ܎্ɺOMPQFTTMBDLଆͷઆ໌͸ׂѪ͠·͕͢ྲྀΕ͚ͩॻ͘ͱҎԼͰ͢ɻ
    35.TH0QUJPO54
    Ͱɺ.FTTBHF&WFOUΛड͚औͬͨͱ͖ͷ5ISFBE5NFTUBNQΛૹΔ
    0VUHPJOH.FTTBBHF\5ISFBE5JNFTUBNQUISFBE5JNFTUBNQ^ʹઃఆ͞ΕΔ
    35.TH0QUJPOܕͰฦ͢
    1BDLBHFWBSJBCMFͰࢦఆͨ͠ม਺UISFBE5T͸ɺͦͷ35.TH0QUJPOܕͱͳΔ

    

    IUUQTHJUIVCDPNOMPQFTTMBDLCMPCFBFDEFFCDEEGD
    NFTTBHFTHP--
    

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15. ड͚औͬͨ5ISFBE5JNF4UBNQΛ࢖͏
    s.rtm.NewOutgoingMessage()
    ͜ͷؔ਺͸ɺTMBDL35.ͰҎԼͷΑ͏ʹఆٛ͞Ε͍ͯ·͢ɻ
    func (rtm *RTM) NewOutgoingMessage(text string, channelID string,
    options ...RTMsgOption) *OutgoingMessage {
    // ..
    return &msg
    4MBDLͰ#PU͕࿩͢.FTTBHFΛೖΕΔؔ਺
    

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16. ड͚औͬͨ5ISFBE5JNF4UBNQΛ࢖͏
    ҎԼͰUISFBE5JNF4UBNQΛ0QUJPOͰࢦఆ͢Ε͹ྑ͍Θ͚Ͱ͢ɻ
    s.rtm.NewOutgoingMessage(message, ev.Channel, threadTs)
    

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17. ड͚औͬͨ5ISFBE5JNF4UBNQΛ࢖͏
    s.rtm.SendMessage(s.rtm.NewOutgoingMessage(message, ev.Channel, threadTs))
    ࣮ࡍʹ.FTTBHFΛૹΔͨΊʹ͸ҎԼͷΑ͏ʹ͠·͢ɻ
    

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18. ͜ΕΛ$MPVE'VODUJPOTʹ৐ͤ
    ͯ4MBDLCPUͱͯ͠ొ࿥͢Δ
    

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19. 4MBDLͰઃఆ
    4MBDL"QQͷ࡞੒ɺొ࿥͔Βɻ
    wิ଍
    w֤छͷઆ໌ʹ͍ͭͯ͸ҎԼ͕Θ͔Γ΍͍͢Ͱ͢
    wIUUQTRJJUBDPNOBNVUBLBJUFNT
    BDBG
    IUUQTBQJTMBDLDPNBQQTɹΛ։͖·͢
    

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20. 4MBDLͰઃఆ
    $SFBUF/FX"QQTΛ։
    ͍ͯ࡞੒Λ։࢝͠·͢
    ͜͜Ͱ͸UFTUCPUͱ͍͏໊
    લͰొ࿥͠·͢
    %FWFMPQNFOU4MBDL
    8PSLTQBDFΛબ୒͠·͢
    

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21. 4MBDLͰઃఆ
    #PU6TFSTΛΫϦοΫ͠
    ͯɺ"EEB#PUVTFSΛΫ
    ϦοΫ
    %JTQMBZOBNFͱ%FGBVMU
    VTFSOBNFͰ͸ɺͲͷΑ͏
    ͳจࣈ਺Ͱ΋ϋΠϑϯແ͠
    ʹม׵͞ΕΔ
    ϋΠϑϯ͕ඞཁͩͬͨΒ௥Ճ͍ͯͩ͘͠͞
    VTFSOBNF͸จࣈ·Ͱͷ੍ݶ͕͋Γ·
    ͢ɻ
    

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22. 4MBDLͰઃఆ
    4DPQFTʹ
    DIBUXSJUFCPUΛ௥Ճ͢Δ
    4BWF$IBOHFTͰอଘ
    ಉ͡ϖʔδͷҰ൪্ʹ͋Δ
    A*OTUBMMBQQUPXPSLTQBDFAΛ
    ΫϦοΫͯ͠"VUIPSJ[FE͢Δɻ
    0BVUI1FSNJTTJPOTઃఆ
    

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23. 4MBDLͰઃఆ
    #PU6TFS0"VUI"DDFTT5PLFOΛऔ
    ಘͯ͠ɺWBSTZBNMʹॻ͘
    0BVUI1FSNJTTJPOTઃఆ
    ACCESS_TOKEN: xoxb-XXXXXXXXXXXXXXXXXXXX
    WBSTZBNM HJUJHOPSFʹೖΕ͓͖ͯ·͢
    
    

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24. (PPHMF$MPVE'VODUJPOTʹEFQMPZ
    HDMPVEGVODUJPOTEFQMPZUFTUCPUa
    FOUSZQPJOU1PTU.FTTBHFa
    SVOUJNFHPa
    FOWWBSTpMFWBSTZBNMa
    USJHHFSIUUQ
    

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25. (PPHMF$MPVE'VODUJPOTʹEFQMPZ
    ͠͹Β͘଴ͭͱEFQMPZ͕׬ྃ͠·͢ɻ
    IUUQT5SJHHFS
    VSMIUUQTSFHJPOQSPKFDUDMPVEGVODUJPOTOFUUFTUCPU
    TUBUVT"$5*7&
    ͷΑ͏ͳIUUQT5SJHHFS͕ൃߦ͞Ε·͢ͷͰɺ͜ΕΛΫϦοΫ͠·͢ɻ
    

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26. ͜Ε͚ͩͰ׬ྃͰ͢
    TMBDLͷDIBOOFMʹ#PUΛ*OWJUF͠·͢ɻ
    

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27. #PUΛݺͼग़͢
    

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28. #PUΛݺͼग़͢
    5ISFBEʹ#PUͷ
    .FOUJPOΛඈ͹͢ͱͦͷ
    5ISFBEʹରԠ͍ͯ͠·
    ͢ɻ
    ·ͨɺ5ISFBEҎ֎ʹ͸
    ͦͷDIBOOFMʹਖ਼֬ʹ
    #PU͕Ԡ౴Λฦ͍ͤͯ·
    ͢ɻ
    

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29. ิ଍
    w ΋ͪΖΜࠓճ͸-5Ͱઆ໌༻Ͱۃ୺ʹ୹ͨ͘͠$PEFͰ͢
    w ࣮ࡍʹ࢖͏ͱ͖͸௕ظӡ༻Λߟ͑ͯॺ໊ͳΜ͔΋͚ͭΔͱྑ͍ͱࢥ͍·͢
    w 4JHOJOHTFDSFU
    

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30. ·ͱΊ
    w 4MBDLCPUͷԼ४උΛ(PͰ΋؆୯ʹग़དྷΔ
    w 5ISFBEରԠ͸ɺ
    TMBDL35.TH0QUJPO54 FW5ISFBE5JNFTUBNQ
    Λऔಘͯ͠࢖͏
    ͚ͩ
    w 4MBDLCPU(P$MPVE'VODUJPOTͷ૬ੑ͸ѱ͘ͳ͍
    w ࡞Γ΍͍֦͢ுੑ͕͋Δ
    The Go gopher was designed by Renee French. (http://reneefrench.blogspot.com/)
    

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31. ࠷ޙʹ
    IUUQTHJUIVCDPNLPHVNBHDGMFBTUTMBDLTBNQMFGPS-5
    

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32. ͝੩ௌ͋Γ͕ͱ͏͍͟͝·͠
    ͨɻ
    

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