Go初心者がgoroutineで挑んだFTPプロキシ

Slide for 2019 Go Conference in Fukuoka

Transcript

1. (Pॳ৺ऀ͕ ༄ɹ௝২
   
   (.0
   1FQBCP
   *OD
    (PSPVUJOFͰ௅Μͩ
   '51
   QSPYZ։ൃ
2. ༄ɹ௝২
   
   !IFBU (.0ϖύϘ
   ΠϯϑϥΤϯδχΞ Ϧϡ
   
   
   
   
   
   
   ɹδϯ
   
   
   γΫ
3. झຯ͸ंͱ༡Ϳࣄ
5. ೖࣾલ࡞ͬͨ΋ͷ
6. ϩϦϙοϓʁ ʮࠃ಺࠷େڃͷϨϯλϧαʔόʔαʔϏεʯ
7. ϩϦϙοϓʂ ೥݄೔։࢝
   ϨϯλϧαʔόαʔϏε
   ສਓҎ্ͷ͓٬͞Μ
   ສҎ্ͷαΠτެ։
8. ϩϦϙοϓʂͰ࢖͏'51 '51ͷ઀ଓ࣌͸௚઀8FCαʔόͷ1VCMJD
   *1΁઀ଓ )PTU
   
   VTFSTMPMJQPQKQ
   *1
   
   
   
   
   
    )PTU
   
   VTFSTMPMJQPQKQ
   *1
   
   
   
   
   
    )PTU
   
   VTFSTMPMJQPQKQ
   *1
   
   
   
   
   
    VTFSTMPMJQPQKQ  $PNNVOJDBUJPO
   %BUB
   USBOTGFS $MJFOU
9. ϩϦϙοϓʂͰ࢖͏'51 8FCαʔόͷσʔλΛҠઃ͢Δͱ σʔλҠઃ $MJFOU
10. ϩϦϙοϓʂͰ࢖͏'51 8FCαʔόͷσʔλΛҠઃ͢Δͱ
 8FCαʔόΛҠઃͨ͠Β઀ଓઌ΋มΘΔ $PNNVOJDBUJPO
    %BUB
    USBOTGFS VTFSTMPMJQPQKQ  $MJFOU
11. ͳͥ'51ΛQSPYZ͢Δʁ Ϣʔβͷརศੑ
    αʔό൪߸Λ೺Ѳ͢Δඞཁͳ͍
    Ϧιʔε؅ཧ
    ଞͷ8FCαʔόʹҠઃͯ͠΋ɺϢʔβʹ઀ଓઌมߋͷ௨஌͕ෆཁ
    ηΩϡϦςΟʔ
    8FCαʔόͷ1VCMJD
    *1͸ग़དྷΔ͚ͩด͍ͨ͡
    υϝΠϯʹߏΘͣ'514͕࢖༻Մೳ
12. Q'51঺հ 6TFS*%Λ,FZͱͯ͠઀ଓઌΛ୳͢
    ΫϥΠΞϯτ͔Β͸ɺQ'51ࣗମ͕'51αʔόͷΑ͏ʹݟ͑Δ $MJFOU Q'51 $PNNBOE
13. Q'51঺հ ̍ηογϣϯ͋ͨΓ̏ͭͷ(PSPVUJOF͕ੜ੒ 64&3
    \*%^ $NE
    SFBEFS 3FTQPOTF
    SFBEFS $MJFOU
    IBOEMFS $POOFDU 3FTQPOTF 3FTQPOTF $PNNBOE $PNNBOE 3FTQPOTF 3FTQPOTF CVpP
    $PNNVOJDBUJPO
14. ,FZ
    GFBUVSF $MJFOUͱ'51
    4FSWFSͷύέοτΛಡΉ(PSPVUJOF࣮ߦ
15. ॳΧφϦΞϦϦʔε
16. ॳΧφϦΞϦϦʔεࣦഊ
17. Կ͕໰୊ͩͬͨͷ͔ Q'51͸'51αʔό͔Βͷ3FTQPOTFΛͦͷ··ฦ͢ $NE
    SFBEFS 3FTQPOTF
    SFBEFS $PNNBOE $PNNBOE 3FTQPOTF 3FTQPOTF CVpP
    $PNNVOJDBUJPO
18. σʔλసૹ͕໰୊ σʔλ઀ଓ͸ΫϥΠΞϯτͱ'51αʔό͕௚ʹ઀ଓ͢Δ࢓૊Έͩͬͨ %BUB
    $POOFDU
    UP
     1"47
    SFTQPOTF
     1"47
    SFTQPOTF
  $MJFOU Q'51  
19. '51αʔό͕
    1SJWBUF
    *1Λฦͯ͠΋઀ଓ͢ΔͨΊ
20. ਅ໘໨͗͢Δύλʔϯ ݩ઀ଓ*1ͱσʔλ઀ଓ*1͕ҧ͏৔߹ΤϥʔʹͳΔΫϥΠΞϯτ  $MJFOU Q'51   
    
    
    
    
    
    
    
    
    
    
     &SSPS 
21. ਌੾͗͢Δύλʔϯ উखʹ઀ଓઌͷ*1Λ੾Γସ͑ΔΫϥΠΞϯτ  $MJFOU Q'51   AA
    ΁ߦ͜͏
    ??   
    
    
    
    
    
    
    
    
    
    
    
22. ղܾࡦ͸ʁ σʔλసૹ΋1SPYZ͢Δ
    సૹϞʔυʹΑͬͯ-JTUFOFS΍%JBMFSΛઃఆͯ͠σʔλΛதܧ %BUB
    $POOFDU
    UP
     1"47
    SFTQPOTF
     1"47
    SFTQPOTF
  $MJFOU Q'51 %BUB
    $POOFDU
    UP
      
23. (PSPVUJOF͕૿͑ͨ σʔλసૹΛॲཧ͢ΔͨΊɺ(PSPVUJOFΛ௥Ճ 1"47 $NE
    SFBEFS 3FTQPOTF
    SFBEFS $MJFOU
    IBOEMFS $POOFDU
     $MJFOU
    ˠ
    0SJHJO 0SJHJO
    ˡ
    $MJFOU %BUB
    IBOEMFS 1"47   $POOFDU
     4FU
    MJTUFOFS
    
24. ͓͔͛ͰֶΜٕͩज़ 8SJUF
    DPOOFDUJPOʹ&P'ΛૹΔํ๏
    "DUJWFసૹϞʔυͷͨΊɺTPDLFU
    SFVTFઃఆํ๏
25. Ͳ͔͜-FBLͯ͠Δʁ "MMPDBUFE
    TPDLFU਺͕૿Ճͬ͠ͺͳ͠
26. 1"47 $POOFDU
     1"47   $POOFDU
     4FU
    MJTUFOFS
     -FBLΛ୳ͦ͏ -FBL͸Ͳ͜Ͱ͠ΐ͏ $NE
    SFBEFS 3FTQPOTF
    SFBEFS $MJFOU
    IBOEMFS $MJFOU
    ˠ
    0SJHJO 0SJHJO
    ˡ
    $MJFOU %BUB
    IBOEMFS
27. 1"47 $POOFDU
     1"47   $POOFDU
     4FU
    MJTUFOFS
     -FBLΛ୳ͦ͏ $MJFOU
    IBOEMFS $MJFOU
    ˠ
    0SJHJO 0SJHJO
    ˡ
    $MJFOU $NE
    SFBEFS %BUB
    IBOEMFS 3FTQPOTF
    SFBEFS
28. -FBLΛ୳ͦ͏ ෛՙςετ͢Ε͹-FBLൃੜ͕Θ͔Γ΍͍͢
29. -FBLΛ୳ͦ͏ -FBLͨ࣌͠ͷϩά͔Β৔ॴΛಛఆ
    $PNNBOE
    SFBE͕-FBL͢Δ৔߹ͷϩά
    ਖ਼ৗʹऴྃ͢Δ৔߹ͷϩά
30. -FBLΛࢭΊΖʂ
31. -FBLΛࢭΊΖʂ -JNJU
    DMJFOU
    DPNNBOE
    VOUJM
    HFU
    SFTQPOTF
    ϨεϙϯεΛฦ͢લʹ΋࣍ͷίϚϯυΛ'51αʔόʹඈ͹͢ࣄ͕Ͱ͖ͨ
    ͜ΕʹΑͬͯ'51αʔόͷॲཧ͕ϋϯάʹͳΓɺ)BOEMFS͕σουϩοΫঢ়ଶʹͳΔ
32. -FBLΛࢭΊΖʂ 'PS
    MPPQ
    ˠ
    $IBOOFM
    XBJU
    4MFFQͳͲͳ͠Ͱ
    GPS
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    ͠ͳ͕Βঢ়ଶΛ଴ͭίʔυ͸ɺ
 ϦιʔεΛٵ͍ࠐΜͰ͠·͏ͷͰϋϯάͷݪҼʹͳΔ
33. -FBLΛࢭΊΖʂ $PNNBOE
    MJOF
    DIFDL
    ΫϥΠΞϯτ͕ਖ਼͘͠ͳ͍ίϚϯυΛૹΔ͕࣌͋ͬͨ
    ͜͏͍͏ίϚϯυΛ'51αʔόʹૹͬͯ͠·͏ͱɺॲཧͰ͖ͣϋϯάʹͳΔ
34. #FGPSF
    /PX ൺֱ
35. ̎ඖ໨ͷΧφϦΞ 
36. ̍ϲ݄Ҏ্໰୊ͳ͘८ߤத ର৅ΞΧ΢ϯτ
    ໿
     
    ΞΧ΢ϯτ
    ಉ࣌઀ଓ
    ࠷େ
    ໿
    
    DPOOFDUJPOT
    ̍೔઀ଓ਺
    ໿
     
    DPOOFDUJPOT
37. ·ͩ·ͩमਖ਼த ࠓ΋#VH΍-FBLͳͲ͕ݟ͚ͭΒΕΔͷͰɺ13ఏग़͠ͳ͕ΒରԠத
38. సૹϞʔυผ࣮૷ Q'51
    UP
    '51αʔόͷసૹϞʔυ͸ݸผઃఆՄೳ
    ͜ΕʹΑͬͯɺҎԼͷ̐ͭͷ઀ଓέʔε͕ग़དྷΔ
    "DUJWF
    5P
    "DUJWF
    
    4FU
    EJBMFS
    GPS
    DMJFOU
    MJTUFOFS
    GPS
    PSJHJO
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    5P
    1BTTJWF
    
    4FU
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    BOE
    PSJHJO
    1BTTJWF
    5P
    "DUJWF
    
    4FU
    MJTUFOFS
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    PSJHJO
    1BTTJWF
    50
    1BTTJWF
    
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    GPS
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    GPS
    PSJHJO
39. ·ͱΊ
40. ։ൃॳ৺ऀͰ΋ɺ
 ӡ༻Ͱ࢖͑Δ'51
    1SPYZ։ൃʹࢀՃͰ͖·ͨ͠ʂ
41. ܰͯ͘ɺ؆୯ͳ
 ฒྻॲཧͷ։ൃํ๏͕͔͋ͬͨΒ
42. (PSPVUJOF͸ศརͰͨ͠ʂ
43. ͔͠͠ɺ
    Ͳ͔͜-FBL͕ൃੜ͍ͯ͠Δͷ͔΋͠Ε·ͤΜ
44. ͍΍ɺ-FBL͸ඞͣ͋Γ·͢ʂ
45. ࠓ͸ݟ͑ͳ͍໰୊͕
    ര஄ʹͳͬͯདྷΔ͔΋͠Ε·ͤΜ
46. ͪΌΜͱ%FCVHͯ͠ɺ
 (PSPVUJOFɺόϯόϯ࢖͍·͠ΐʂ
47. ͋Γ͕ͱ͏͍͟͝·ͨ͠