Chrome as a service in Go

- Cloud Functions 上の Chrome の issue: https://github.com/GoogleChrome/puppeteer/issues/3120
- Pooling の問題: https://golang.org/issue/23199
- https://github.com/chromedp/chromedp

1. $ISPNF
   BT
   B
   TFSWJDF
   JO
   (P !(P
   $POGFSFODF
   4VNNFS
   JO
   'VLVPLB
2. !DPEFIFY !$PEF)FY w (P
   1FSM
   
   w %FWFMPQ
   .JDSPTFSWJDFT
   !
   .FSQBZ
   .FSDBSJ
   w ϥʔιʔϝϯ
   -PWFS
   
3. ࠓ೔࿩͢͜ͱ
4. ࠓ೔࿩͢͜ͱ w ؀ڥͷ঺հ
   w ͳͥ
   $ISPNF
   BT
   B
   TFSWJDF
   ͔
   w Ͳ͏࣮૷ͨ͠ͷ͔
   w ύϑΥʔϚϯεͷվળ
5. ؀ڥͷ঺հ ґཔ಺༰ͱαʔϏεͷ঺հ
6. Ճໍళਃ͠ࠐΈࣄۀऀͷ
 ৹ࠪ࣌ؒ୹ॖԽ
7. IUUQTXXXNFSQBZDPNNFSDIBOU
8. w ࣄۀऀͷ৹߲ࠪ໨͸୔ࢁ͋Δ
   w ৹߲ࠪ໨ͷҰͭͱͯ͋͠Δ
   1%'
   ͷऔಘ͕ඞཁ
   w ͔͠͠खಈͰऔಘ͍ͯͨͨ͠Ί͕͔࣌ؒͳΓֻ͔Δ໰୊͕͋ͬͨ
   w ࣗಈԽ͢Δ͜ͱͰΦϖϨʔλʔશମͷ
   1%'
   ͷऔಘ͕࣌ؒ
 ฏۉͰ෼୹͘ͳΔͩΖ͏ͱ༧૝͞Εͨ
9. ొ৔͢ΔαʔϏεͷ঺հ
10. ొ৔͢ΔαʔϏεͷ঺հ w "ENJO4FSWJDF
    w 1%'4FSWJDF
    w $ISPNF4FSWJDF
11. ొ৔͢ΔαʔϏεͷ঺հ w "ENJO4FSWJDF
    w 1%'4FSWJDF
    w $ISPNF4FSWJDF
12. "ENJO4FSWJDF w ΧελϚʔαϙʔτ΍ࣄۀऀ৹ࠪͷͨΊͷػೳΛఏڙ͢ΔαʔϏε
    w ϑϩϯτΤϯυͱ࿈ܞ͢ΔͨΊʹઐ༻ͷΤϥʔΛฦͤΔ
    w ࠓճͷҊ݅Ͱ͜ͷαʔϏεʹ৽͘͠ΤϯυϙΠϯτΛੜ΍͢
13. ొ৔͢ΔαʔϏεͷ঺հ w "ENJO4FSWJDF
    w 1%'4FSWJDF
    w $ISPNF4FSWJDF
14. 1%'4FSWJDF w औಘϑΥʔϜͰ
    1%'
    Λऔಘ͢Δ͜ͱ͕Ͱ͖Δ
    w ͦͷऔಘϑΥʔϜ·Ͱೖྗ͢Δ಺༰͕ଟ͍
    w ͔͠΋αʔϏεͷཪଆͰ
    1%'
    Λ༻ҙ͢Δ͚ͩͰ μ΢ϯϩʔυ͕௚͙ʹͰ͖ΔΘ͚Ͱ͸ͳ͍
15. 1%'4FSWJDF w औಘϑΥʔϜͰ
    1%'
    Λऔಘ͢Δ͜ͱ͕Ͱ͖Δ
    w εςʔλε͕ෳ਺ଘࡏ͢Δ
    w औಘத
    1%'
    Λ༻ҙͯ͘͠ΕͯΔ
    w औಘࡁ
    1%'
    Λμ΢ϯϩʔυͰ͖Δ४උ͕੔ͬͨ͜ͱΛҙຯ͢Δ
    w ͦΕҎ֎
16. ొ৔͢ΔαʔϏεͷ঺հ w "ENJO4FSWJDF
    w 1%'4FSWJDF
    w $ISPNF4FSWJDF
17. $ISPNF4FSWJDF w 1%'4FSWJDF
    ͷز͔ͭͷϑΥʔϜ·ͰࣗಈͰೖྗͯ͠࠷ऴత ʹ
    1%'
    Λऔಘ͢Δ
    w ͦͷ
    1%'
    ΛΫϥΠΞϯτ΁ฦ͢
    w ݱࡏ
    %BJMZ
    Ͱ
    1%'4FSWJDF
    ΁ͷϦΫΤετ਺͸ฏۉ
    
    ҎԼ
19. ͳͥ
 $ISPNF
    BT
    B
    TFSWJDF
    ͔ $ISPNF
    Λ
    TFSWJDF
    ͱͯ͠࢖͏͜ͱʹͨ͠ཧ༝
20. ޻਺ͷ໰୊
21. w ༷ʑͳࣄ৘Ͱ޻਺͕ଟׂ͚͘ͳ͔ͬͨ
    w 1%'
    Λऔಘ͢Δ·ͰͷΦϖϨʔγϣϯ͸γϯϓϧ
    w Ͳ͏ʹ͔ͯ͠ϒϥ΢βૢ࡞Λه࿥ͯ͠ίʔυԽ͔ͨͬͨ͠
23. w $ISPNF
    %FW5PPMT
    1SPUPDPM
    Λར༻ͯ͠
    $ISPNF
    Λૢ࡞Ͱ ͖Δ
    /PEFKT
    ͷϥΠϒϥϦ
    w 1VQQFUFFS
    IUUQTQQUSEFW
    w %FW5PPMT
    1SPUPDPM
    
 IUUQTDISPNFEFWUPPMTHJUIVCJPEFWUPPMTQSPUPDPM
    w $ISPNF
    ֦ுͷ
    QVQQFUFFSSFDPSEFS
    Λར༻͢Ε͹ϒϥ΢ βૢ࡞Λه࿥ͯ͠ίʔυԽͰ͖Δ 1VQQFUFFS
24. Ͳ͏࣮૷ͨ͠ͷ͔ Ͳ͏͍͏ྲྀΕͰ
    $ISPNF
    BT
    B
    TFSWJDF
    Λ࣮૷͔ͨ͠
26. w /PEFKT
    
    1VQQFUFFS
    PO
    (PPHMF
    $MPVE
    'VODUJPOT
    ͰҰ୴࣮૷ͨ͠
    w ࣮ࡍʹ࣮ߦͯ͠ΈΔͱຖճ
    $MPVE
    'VODUJPOT
    ͷλΠϜΞ΢τʹ
 Ҿ͔͔ͬΔ͘Β͍࣮ߦ͕࣌ؒ௕͍
    w $MPVE
    'VODUJPOT
    ͷλΠϜΞ΢τ͸
    
    ඵ
    w IUUQTDMPVEHPPHMFDPNGVODUJPOTRVPUBT IMKBUJNF@MJNJUT
    w 1VQQFUFFS
    ͸
    $MPVE
    'VODUJPOT
    ্ͩͱ࣮ߦ͕஗͍ͱ͍͏
    JTTVF
    ΋ཱͬͯͨ
    w "84
    -BNCEB
    ͷ΄͏͕ૣ͍Β͍͠
    w IUUQTHJUIVCDPN(PPHMF$ISPNFQVQQFUFFSJTTVFT
27. ࣮ߦ͕࣌ؒ͋·Γʹ΋஗ͯ͘ ॲཧ͕தஅ͞ΕΔ
29. (,&
    ͷ্Ͱ
    .JDSPTFSWJDF
    ͱͯ͠ىಈ͢ΔಓΛબ୒
30. w ϦιʔεΛ
    $MPVE
    'VODUJPOT
    ΑΓ΋ଟ͘࢖͑Δ
    w Ծʹ஗͘ͳͬͨͱͯ͠΋ϩδοΫͰΧόʔ͕Ͱ͖Δ .JDSPTFSWJDFT
    ͱͨ͠ཧ༝
31. ϩδοΫ
32. ϩδοΫ w ͋ΔύϥϝʔλΛࡌͤͨϦΫΤετ͕ॳΊ͖ͯͨ৔߹ʹ
    HPSPVUJOF
    Λىಈͤ͞ɺόοΫάϥ΢ϯυͰ
    $ISPNF
    Λىಈ͢Δɻ
    w 1%'4FSWJDF
    ͷϑΥʔϜΛશͯࣗಈೖྗͤͯ͞ɺ1%'
    Λऔಘ͢Δ
33. ϩδοΫ w औಘͨ͠
    1%'
    Λ
    (PPHMF
    $MPVE
    4UPSBHF
    ($4
    ΁Ξοϓϩʔυ͢Δ
    w ͦͷޙʹಉ͡ϦΫΤετ͕དྷͨΒɺ($4
    ͔Βμ΢ϯϩʔυͤ͞Δ
34. ($4
    ʹ
    1%'
    ͕
 Ξοϓϩʔυ͞Εͯͳ͍৔߹
36. ($4
    ʹ
    1%'
    ͕
 Ξοϓϩʔυ͞ΕͯΔ৔߹
38. ΞϓϦέʔγϣϯͷύοέʔδ঺հ
 ʢখٳܜʣ
42. w CZUFT#V⒎FS
    Λ
    TZOD1PPM
    Ͱ࢖͍ճ͢
    w ࠷ॳ͸
    ,J#
    ෼ͷόοϑΝΛ֬อͯ͠࡞Δ
    w 1VU
    ͢Δ࣌ʹΩϟύγςΟ͕
    .J#
    Λ௒͑ͯΕ͹
    1VU
    ͠ͳ͍
    w ಈతʹόοϑΝΛ֬อ͢Δ
    
    1PPMJOH
    Ͱൃੜ͢Δ໰୊Λճආ
    w 1PPM
    ͯ͠ΔόοϑΝͷྔ͕૿͑ଓ͚
    ($
    ͞Εͳ͍໰୊͕ൃੜ͢Δ
    w IUUQTHPMBOHPSHJTTVF CV⒎FSQPPM
45. w HJUIVCDPNDISPNFEQDISPNFEQ
    Ͱ࢖͑Δ
 $ISPNF
    ͷΞΫγϣϯΛఆٛͨ͠ύοέʔδ
    w ओʹ
    DISPNFEQ
    ܦ༝Ͱ
    $ISPNF
    ʹ࣮ߦ͍ͤͨ͞
    +BWB4DSJQU
    ͷίʔυΛؔ਺ͱͯ͠ఆٛ͢Δ
    w (FU5FYU#Z4FMFDUPS
    ʹ
    )5.-
    ͷηϨΫλΛ౉͢ͱ
 $ISPNF
    ͕ͦ͜ͷςΩετΛऔಘ͢Δ DISPNF
48. w DISPNFUFTU
    ͱ͍͏ςετઐ༻ύοέʔδΛ
    DISPNF
    ύο έʔδ഑Լʹఆٛ͢Δ
    w ϩʔΧϧʹςετ༻ͷ
    )5.-
    ΛϨϯμϦϯά͢Δ
    )551
    4FSWFS
    ΛݐͯΔ
    w ϩʔΧϧͷ
    DISPNF
    Λ࢖͏ DISPNF
    ͷςετ
49. ʙ
    খٳܜऴྃ
    ʙ
50. ΞϓϦέʔγϣϯΛ
 ಈ͔ͯ͠Έͨ݁Ռ
51. ໿
    T
    ΋ֻ͔ͬͯΔ
52. ύϑΥʔϚϯεͷվળ ΞϓϦέʔγϣϯͷॲཧ࣌ؒΛ୹͘͢ΔͨΊʹ
53. τϨʔε΍ϓϩϑΝΠϥʹ஫໨͢Δ
54. w τϨʔε΍ϓϩϑΝΠϥΛݟͯԿ͕஗͍͔ɺݪҼΛେ·͔ʹߜΔ
    w ஗͍ͷ͸
    $ISPNF
    ͷ෦෼
    w $16
    Λ
    $ISPNF
    ͕݁ߏ࢖ͬͯͨ
    w ͦͷՕॴͰݱঢ়ൃੜ͍ͯ͠Δ໰୊΋੔ཧ͢Δ
    w ͜ͷ࣌
    DISPNF
    ͷҰ෦ͷػೳ͕
    UJNFPVU
    ͢Δ͜ͱ͕͋ͬͨ
    w DPOUFYU$BODFMFE
    ͷ࣌ʹ
    $ISPNF
    ͕ऴྃ͠ͳ͍໰୊΋͋ͬͨ
55. ࢖͑ΔϦιʔεΛ૿΍͢
56. w ϝϞϦͷϦιʔεΛ૿΍͢
    ˠ
    վળͳ͠
    w $16
    ͷϦιʔεΛ૿΍͢
    ˠ
    ඍʑͨΔվળ ࢖͑ΔϦιʔεΛ૿΍͢
57. DISPNFEQ
    ͷमਖ਼
60. w ౰࣌
    SFGBDUPS
    ϒϥϯνͳΔ΋ͷ͕ଘࡏͨ͠
    w ͜ͷϒϥϯν্Ͱ͸༷ʑͳ໰୊͕ղܾ͞Ε͍ͯͨ
    w ຆͲͷ
    JTTVF
    ʹ͜ͷϒϥϯνͰ͸௚ͬͯΔͱ͍͏هड़͕͋Δ
    w NVUFY
    MPDL
    ϕʔε͔Β
    DPOUFYU
    ϕʔε΁मਖ਼
    w ͦΕ͕όʔδϣϯλά͕੾ΒΕͭͭɺࠓޙ
    NBTUFS
    ΁Ϛʔδ͞ΕΔ༧ఆͩͬ ͨʢݱࡏ͸ϚʔδࡁΈ
    Wʣ
61. DISPNFEQ
    ͷϒϥϯνΛมߋ
62. T
    ˠ
    T
    ΁୹ॖ
    
63. ·ͱΊ
64. ·ͱΊ w /PEFKT
    
    1VQQFUFFS
    ͸
    "84
    -BNCEB
    Ͱ࢖͍·͠ΐ͏
    w DISPNFEQDISPNFEQ
    SFGBDUPS
    ͸
    NBTUFS
    ʹϚʔδ͞ΕͯΔͷͰ ͲΜͲΜ࢖͍·͠ΐ͏
    w ݁Ռతʹ࠷଎෼ͷ৹͕ࠪ࣌ؒ୹ॖ͞Εͨ
65. ޙ೔ஊ
67. ޙ೔ஊ w $ISPNF
    ΛࣙΊͯ
    $PPLJF
    ΛҰ࿈ͷॲཧͷத͚ͩͰ࢖͍ճ͢
    w HJUIVCDPNIFBE[PPTVSG
    Λ࢖ͬͨ
    w ଞ͸
    IUUQ
    ύοέʔδͷ
    $MJFOU
    Λ࢖ͬͯϦΫΤετΛߦ͏
68. T
    ˠ
    T
    ΁୹ॖ
    
69. ΊͰͨ͠ΊͰͨ͠