Plugin comming on Go

fukuoka.go #8 - April 24, 2017 でのLTです

Transcript

1. ΍ͬͱ͖ͨϓϥάΠϯ #BDLHSPVOE
   *NBHF
   'SBOL(VJEP GVLVPLBHP
   
   
   "QSJM
   
   
   
   MJOZPXT
2. TOMOHISA ODA LINYOWS@ GMO PEPABO INC GVLVPLBHP
   
3. GVLVPLBHP
    ࠷ۙ΍͍ͬͯΔ͜ͱ ▸OPEFKTͰ&4ରԠͷ"1*ΫϥΠΞϯτͱ$-*πʔϧ
   ▸HPMBOHͷ8"'
   FDIPͷ"1*ͷ౷߹ςετ
   ▸0$501"44ͱ͍͏/44Ϟδϡʔϧ
4. ϒϩάɿ
   IUUQUPNPIJTBPEBDPNQPTUT FBTF@NBOBHFNFOU@PG@MJOVY@TFSWFS@BENJOJTUSBUPSIUNM GVLVPLBHP
   
5. IUUQTHJUIVCDPNMJOZPXTPDUPQBTT GVLVPLBHP
   
6. GVLVPLBHP
    (0ͷϓϩμΫγϣϯ׆༻ࣄྫ ▸ "1*αʔόʢFDIP΍QVSF
   HPʣ
   ▸ 45/4ʢMJOVYͷϢʔβ؅ཧʣ
   ▸ Ϩϯλϧαʔόͷࣗಈ੍ޚʢෛՙঢ়گʹΑΓࣗಈͰ੍ݶΛ͔͚Δʣ
   ϓϩμΫγϣϯҎ֎Ͱ͋Ε͹঺հ͖͠Εͳ͍΄Ͳ͋Δʜ
   .PY
   0QFO4UBDL
   $-*
   XSBQQFS
   NEU
   UBLPTBO
   44)
   XSBQQFS
   ΋ͪΖΜ
   QU
7. ͯ͞ɺ(0
   W
   ࢖ͬͯ·͔͢ʁ GVLVPLBHP
   
8. GVLVPLBHP
    (0
   W
   ͓΋ͳมߋ఺ ▸ ໊લ෇͖ߏ଄ମͷܕม׵
   ▸ ίϯύΠϥ΍($ͷվળ
   ▸ )551
   1VTIରԠ
   ▸ )551
   TFSWFS
   (SBDFGVM
   4IVUEPXOରԠ
   ▸ .VUFYUͷϓϩϑΝΠϦϯάରԠ
   ▸ 1MVHJOύοέʔδ
9. ϓϥάΠϯ  GVLVPLBHP
   
10. ͜Ε·ͰͲ͏ͯͨ͠ͷ GVLVPLBHP
    
11. GVLVPLBHP
     ͜Ε·ͰͷϓϥάΠϯྫ ▸ IBTIJDPSQHPQMVHJO
    5FSSBGPSN
    /PNBE
    7BVMUͳͲͰ࢖ΘΕͯΔ
    ▸ EVMMHJVMJPQJOHP
    1MVHJOػߏϥΠϒϥϦʣ
    ▸ NBDLFSFMJPNBDLFSFMBHFOUQMVHJOTʢͦΕͧΕ͕$-*ʣ
12. GVLVPLBHP
     ͜Ε·ͰͷϓϥάΠϯ࢓૊Έ APPLICATION PLUGINS (SUBPROCESSES) Unix Domain Socket TCP localhost
13. ͑ͬɺͦΕͬαʔόʜ GVLVPLBHP
    
14. 1MVHJO4FSWFS 1MVHJO4FSWFS 1MVHJO4FSWFS 1MVHJO4FSWFS GVLVPLBHP
     ϓϥάΠϯͱ͍͏໊ͷ.JDSP4FSWJDFTʜ APPLICATION Unix Domain Socket Unix Domain Socket Unix Domain Socket Unix Domain Socket
15. ▸ ຊମͱ׬શʹ෼཭Ͱ͖ΔͷͰϓϥάΠϯ͕ݪҼͰΫϥογϡ͠ͳ͍
    ▸ ϓϥάΠϯ͸31$Ͱ͋Ε͹HPMBOHʹݶఆ͞Εͳ͍ʢ࣮૷࣍ୈʣ
    ▸ Ϗϧυͨ͠όΠφϦΛઃஔ͢Ε͹ಈ͘
    ▸ ϓϥάΠϯͷ਺͚ͩαʔόىಈ͢ΔͷͰϓϩηε૿͑Δ 0WFS
    31$ܕϓϥάΠϯ·ͱΊ GVLVPLBHP
    
16. Ͱ͸ɺ৽͍͠ϓϥά Πϯ͸ʁ GVLVPLBHP
    
17. 1. p, _ := plugin.Open(“./plugins/animal.so”) // *PluginΛฦ͢ 2. symbol, _ := p.Lookup(“Sounds”) // ΤΫεϙʔτ͞ΕͨV΍FΛγϯϘϧͱͯ͠ฦ͢ 3. sounds := symbol.(SoundsInterface) // IntefaceΛSymbolʹ౉͢͜ͱͰV΍F͕ར༻ՄೳͱͳΔ 4. sounds.Init(Sounds.conf) // ྫ͑͹ϝΠϯΞϓϦέʔγϣϯ͔Βͷઃఆ஋Λ౉͢ͳͲ 5. sounds.List[“dog”].MakeNoise() // ϝιουݺग़͠ 6. // => Bow wow! ϓϥάΠϯ࢖͍ํ GVLVPLBHP
    
18. ΊͬͪΌ؆୯΍Μ GVLVPLBHP
    
19. αϯϓϧίʔυ͋Γ·͢ͷͰɺ
    ৄ͘͠͸ҎԼͷϦϙδτϦΛ͝ཡ͍ͩ͘͞
    IUUQTHJUIVCDPNMJOZPXTHPQMVHJOTBOECPY GVLVPLBHP
    
20. GVLVPLBHP
     ৽ύοέʔδͷϓϥάΠϯ ▸ HP
    CVJME
    CVJMENPEFQMVHJO
    P
    NZQMVHJOTP
    NZQMVHJOHP
    Ͱ40ϑΝΠϧ࡞੒
    ▸ QMVHJO͸ݱঢ়
    MJOVY
    ͰͷΈϏϧυՄೳʢ.BD04͸ؒʹ߹Θͳ͔ͬͨʣ
    ▸ QMVHJO͸ϝΠϯΞϓϦͱಉ͡(PͷόʔδϣϯͰϏϧυ͠ͳ͚Ε͹ͳΒͳ͍ ʢ͑ͬʣ
21. Versioning Most Of These Execution Modes Permit Code To Be Built At Different Times And Linked Together At Runtime. Nevertheless, We Require That All Go Code That Is Combined Into A Single Executable Image Must Be Built With The Same Version Of The Go Toolchain. We Require Further That If Any Go Package Appears More Than Once In The Executable Image, It Must Be Built From The Same Source Code. This Is A Very Strict Requirement. It Means That If A C Program Has A C Api Style Plugin Interface, And It Opens Multiple Plugins Written In Go, All Of Those Plugins Must Be Built With The Same Version Of The Go Toolchain, And Any Shared Packages Must Be Identical. It May Be Possible To Weaken This Restriction In The Future, But We’ll Start With This. Go Execution Modes (from Feature Proposals) GVLVPLBHP
     ͜ΕΒͷ࣮ߦϞʔυͷ΄ͱΜͲ͸ɺ࣮ߦ࣌ʹίʔυΛҟͳΔ࣌ؒʹߏஙͯ͠ϦϯΫ͢Δ͜ͱΛՄೳʹ͠·͢ɻ ͦΕʹ΋͔͔ΘΒͣɺ୯Ұ ͷ࣮ߦՄೳΠϝʔδʹ݁߹͞Εͨ͢΂ͯͷGoίʔυ͸ɺಉ͡όʔδϣϯͷGoπʔϧνΣʔϯͰߏங͢Δඞཁ͕͋Γ·͢ɻ ࣮ߦՄೳΠϝʔ δʹෳ਺ͷGoύοέʔδ͕ෳ਺දࣔ͞ΕΔ৔߹͸ɺಉ͡ιʔείʔυ͔Βߏங͢Δඞཁ͕͋Γ·͢ɻ ͜Ε͸ඇৗʹݫ͍͠ཁ݅Ͱ͢ɻ ͭ·ΓɺCϓϩάϥϜʹC APIελΠϧͷϓϥάΠϯΠϯλʔϑΣΠε͕͋ΓɺGoͰॻ͔Εͨෳ਺ͷϓϥά ΠϯΛ։͘ͱɺͦΕΒͷϓϥάΠϯ͸͢΂ͯGoπʔϧνΣʔϯͷಉ͡όʔδϣϯͰϏϧυ͞Εͳ͚Ε͹ͳΒͣɺڞ༗ύοέʔδ͸ಉҰͰ ͳ͚Ε͹ͳΓ·ͤΜɻ কདྷ͜ͷ੍ݶΛऑΊΔ͜ͱ͸Մೳ͔΋͠Ε·ͤΜ͕ɺ͜Ε͔Β࢝ΊΔͭ΋ΓͰ͢ɻ
22. ▸ ϓϥάΠϯ͸
    (Pͷಛఆͷόʔδϣϯʹݶఆ͞ΕΔ
    ▸ ڞ௨ͷ*'࢖͍ɺ࣮૷͸PQFOͯ͠ࢦఆͷϝιουݺͼग़͚ͩ͢ͳͷͰͱͯ΋؆୯
    ▸ ౰વͳ͕ΒQMVHJO಺ͰQBOJDى͖ΔͱϝΠϯΞϓϦ΋ࢮ͵
    ▸ ϝΠϯ"QQ͕PQFOલʹϓϥάΠϯΛϏϧυ͢Δͱ͍͏ख΋͋Δ
    ▸ (PͷΤϯδχΞ͸ख͕ܰͩͦͷଞͷΤϯδχΞʹ͸ෑډ͕͋Δ ڞ༗ϥΠϒϥϦܕϓϥάΠϯ·ͱΊ GVLVPLBHP
    
23. (0ͷΤϯδχΞ͸ख͕ܰͩ
    ͦͷଞͷΤϯδχΞ͸೉͍͠ GVLVPLBHP
    
24. ▸ 31$ܕͰ֤ݴޠͷαʔόཱͯΔ
    ▸ NJUDIFMMIHPNSVCZ΍EFVJMMHPQIQ
    ͱ͍ͬͨଞݴޠCJOEJOHTΛ࢖͏
    ʜͦ΋ͦ΋ɺHPͰଞݴޠͷϓϥάΠϯΛ࢖͑ΔΑ͏ʹ͢Δͱ͍͏ൃ૝͕ؒҧ͍ͬͯ ΔΑ͏ʹ΋ࢥ͑Δ ΄͔ͷݴޠରԠ͢Δʹ͸ GVLVPLBHP
    
25. ▸ "QBDIFͷϞδϡʔϧ
    MJCQIQTP
    ͕
    HPͷαʔόͰ؆୯ʹಈ͘ͱ͔
    ▸ 5IF
    1MBUJOVN
    4FBSDIFS
    ʹ
    ਖ਼نදݱΤϯδϯʹَं
    MJCPOJHTP
    ΛϓϥάΠϯͱ͠ ࢖͑·͢ͱ͔΍Γ͔ͨͬͨ ΄Μͱ͸ʜ GVLVPLBHP
    
26. GVLVPLBHP
     ·ͱΊ ▸ (PͷϓϥάΠϯػߏ͸31$ͱൺ΂ΔͱΦʔόʔϔουͳ͍ʢී௨ʹߟ͑ͯʣ
    ▸ ಉ͡(PͷόʔδϣϯͰϏϧυ͢Δ੍໿͕͋Δ͕$*౳ϏϧυπʔϧͰղܾ
    ▸ खܰʹϓϥάΠϯػߏ΋ͯΔͷͰ044ઃܭ͕޿͕Γͦ͏
27. ͋Γ͕ͱ͏͍͟͝·ͨ͠ʂ GVLVPLBHP