GAE/Go の勘どころ

golang.tokyo #5

Transcript

1. GAE/Go ͷצͲ͜Ζ @osamingo golang.tokyo #5 (2017/04/27)
2. The golang.tokyo logo was made by Takuya Ueda. The Go gopher was designed by Renee French.
3. Agenda 1. ࣗݾ঺հ 2. GAE ʹ͍ͭͯ 3. GAE ্Ͱͷ Go app ͷצͲ͜Ζ 4. ӡ༻͢Δͱ͖ͷ Tips 5. ·ͱΊ 3
4. Agenda 1. ࣗݾ঺հ 2. GAE ʹ͍ͭͯ 3. GAE ্Ͱͷ Go app ͷצͲ͜Ζ 4. ӡ༻͢Δͱ͖ͷ Tips 5. ·ͱΊ 4
5. ࣗݾ঺հ
6. ۭલઈޙͷ͓͓͓͒ʂʂौ୩/࿡ຊ ໦ʹੜଉ͍ͯ͠ΔΰΥΥϑΝΝΝΝ 㷉ˑϖˑ㷊ʂʂʂ৽ن։ൃΛѪ͠ɺ ৽ن։ൃʹѪ͞Ε͓ͨͱ͒͜ʔʂʂ
7. ;͚ͯ͟ɺ͢Έ·ͤΜͰͨ͠ɻ
8. ࣗݾ঺հ • ओ৿ ཧ - Osamu TONOMORI • @osamingo • גࣜձࣾι΢κ΢ • 2016/08 ~ • Software engineer • Go ྺ • 2014/10 ~ • GAE/Go ͸ɺ2016/08 ~ 8
9. ࣗݾ঺հ
12. Agenda 1. ࣗݾ঺հ 2. GAE ʹ͍ͭͯ 3. GAE ্Ͱͷ Go app ͷצͲ͜Ζ 4. ӡ༻͢Δͱ͖ͷ Tips 5. ·ͱΊ 12
13. GAE ʹ͍ͭͯ
14. GAE ͱ͸ • Google App Engine • Google ͕΍͍ͬͯΔ PaaS ɻ • 2008 ೥͙Β͍͔Β͋ΔɻʢGCPͰ͸࠷ݹࢀ૊ʣ • Scaling Λௐ੔͢Ε͹ɺແྉͰ࢖͑Δɻ 14
15. GAE ͱ͸ • Google App Engine • Google ͕΍͍ͬͯΔ PaaS ɻ • 2008 ೥͙Β͍͔Β͋ΔɻʢGCPͰ͸࠷ݹࢀ૊ʣ • Scaling Λௐ੔͢Ε͹ɺແྉͰ࢖͑Δɻ • Heroku ͱಉ͡ײ͡Ͱ৮Δͱ (ʋ´ω`) ͳײ͡ʹͳΔɻ • ಠࣗͷϧʔϧ΍ɺ֮͑Δ͜ͱ͕ଟ͍ɻ 15
16. Standard and Flexible Environment • Standard Environment (SE) • GAE ͱ͍ͬͯࢦ͢ͷ͸ɺ͍͍ͩͨͬͪ͜ɻ • ݴޠ੍໿΍ɺಠࣗͷϧʔϧ͸ଟ͍͕͓खܰʹࢼͤΔɻ • Go, Python, Java, PHP • Flexible Environment (FE) • Cloud Next 2017 Ͱɺ GA ʹͳͬͨɻ • Docker ͳͷͰɺಛʹ੍໿͸ແ͍ɻ 16
17. Flexible Environment Λ࢖͏৔໘ • ωοτϫʔΫىҼͷཁٻ͕͋Δ৔߹ • ݻఆ IP Ͱ֎෦઀ଓ͠ͳ͍ͱ͍͚ͳ͍ɻ • ಺෦ެ։ݶఆͷαʔϏε΁ͷΞΫηεɻ • Ұ࣌తͳσΟεΫॻ͖ࠐΈ͕ඞཁͳ৔߹ • ϑΝΠϧΛ࡞੒͍ͨ͠৔߹ͳͲɻ (tmpfs) 17
18. GAE/Go (SE) Ͱͷز͔ͭͷ੍໿ • Go 1.6.4 • syscall, unsafe package ͸ɺجຊతʹ࢖͑ͳ͍ɻ • // +build !appengine ͷೝ஌ͷ௿͞… 18
19. GAE/Go (SE) Ͱͷز͔ͭͷ੍໿ • Go 1.6.4 • syscall, unsafe package ͸ɺجຊతʹ࢖͑ͳ͍ɻ • // +build !appengine ͷೝ஌ͷ௿͞… • context.Context Λ࣋ͪӡΜͰߦ͘ɻ • context Λ࢖ͬͯ DB ΞΫηε౳Λߦ͏ɻ • ٯʹ͍͏ͱɺcontext ͕ແ͍ͱ΄΅Կ΋ग़དྷͳ͍ɻ 19
20. GAE/Go (SE) Ͱͷز͔ͭͷ੍໿ • Go 1.6.4 • syscall, unsafe package ͸ɺجຊతʹ࢖͑ͳ͍ɻ • // +build !appengine ͷೝ஌ͷ௿͞… • context.Context Λ࣋ͪӡΜͰߦ͘ɻ • context Λ࢖ͬͯ DB ΞΫηε౳Λߦ͏ɻ • ٯʹ͍͏ͱɺcontext ͕ແ͍ͱ΄΅Կ΋ग़དྷͳ͍ɻ 20
21. Go 1.8 ͕͘Δ͔΋
24. ଴ͭͷ
25. Agenda 1. ࣗݾ঺հ 2. GAE ʹ͍ͭͯ 3. GAE ্Ͱͷ Go app ͷצͲ͜Ζ 4. ӡ༻͢Δͱ͖ͷ Tips 5. ·ͱΊ 25
26. GAE ্Ͱͷ Go app ͷצͲ͜Ζ
27. DB ͬͯԿ࢖͏ͷʁ
28. DB ͷબ୒ʹ͍ͭͯ • Cloud Datastore • NoSQL (Based BigTable) • GAE ͷ৔߹ɺجຊతʹ Datastore Λར༻͢Δɻ • มଶྗઃܭྗ͕ࢼ͞ΕΔɻ 28
29. DB ͷબ୒ʹ͍ͭͯ • Cloud Datastore • NoSQL (Based BigTable) • GAE ͷ৔߹ɺجຊతʹ Datastore Λར༻͢Δɻ • มଶྗઃܭྗ͕ࢼ͞ΕΔɻ • Cloud SQL • Managed MySQL/PostgreSQL(β) • ౦ژϦʔδϣϯͷ Latency ͕Ϋι໰୊΋ղܾࡁΈɻ 29
30. Cloud Datastore ͷ৔߹ • ެࣜͷ datastore ύοέʔδΛ௚Ͱ͸࢖Θͳ͍ɻ • ඞͣ wrap ͯ͠࢖ͬͨํ͕Α͍ɻ • interface, validation ͳͲͪΌΜͱ΍Γ·͠ΐ͏ɻ • goon ͱ͔΋͋ΔͷͰɺࢀߟʹ͢ΔͱΑ͍ɻ 30
31. Cloud Datastore ͷ৔߹ • ެࣜͷ datastore ύοέʔδΛ௚Ͱ͸࢖Θͳ͍ɻ • ඞͣ wrap ͯ͠࢖ͬͨํ͕Α͍ɻ • interface, validation ͳͲͪΌΜͱ΍Γ·͠ΐ͏ɻ • goon ͱ͔΋͋ΔͷͰɺࢀߟʹ͢ΔͱΑ͍ɻ • ͨͩɺઃܭ͕㙽ʹ֯೉͍͠ɻ 31
34. Cloud SQL ͷ৔߹ • ͳΜ΍͔Μ΍ී௨ʹ࢖͑·͢ɻ • sql ύοέʔδͰ઀ଓ؅ཧ͢ΔͷͰɺྑ͠ͳʹɻ 34
35. Cloud SQL ͷ৔߹ • ͳΜ΍͔Μ΍ී௨ʹ࢖͑·͢ɻ • sql ύοέʔδͰ઀ଓ؅ཧ͢ΔͷͰɺྑ͠ͳʹɻ • ͱ͸͍͑ɺ࢖͏લʹ஫ҙ఺͕͋Δ… 35
38. ಉ࣌઀ଓ਺͕࠷େ 12 ݸ
39. ಉ࣌઀ଓ਺͕࠷େ 12 ݸ (Master, Slave ͷ߹ܭ)
40. sql.DB_SetMaxOpenConns(n int)
41. Vendoring ͬͯͲ͏ͳͷʁ
42. Vendoring ʹ͍ͭͯ • GOPATH ͕ɺϓϩδΣΫτϕʔεʹͳΔɻ 42
43. Vendoring ʹ͍ͭͯ • GOPATH ͕ɺϓϩδΣΫτϕʔεʹͳΔɻ • vendor σΟϨΫτϦͱ͔ɺ࢖͑ͳ͍ɻ • dep, glide, gvt ͳͲݢฒΈ࢖͑·ͤΜɻ 43
44. Vendoring ʹ͍ͭͯ • GOPATH ͕ɺϓϩδΣΫτϕʔεʹͳΔɻ • vendor σΟϨΫτϦͱ͔ɺ࢖͑ͳ͍ɻ • dep, glide, gvt ͳͲݢฒΈ࢖͑·ͤΜɻ • ےྗͰΧόʔʂʂ 44
45. Vendoring ʹ͍ͭͯ • GOPATH ͕ɺϓϩδΣΫτϕʔεʹͳΔɻ • vendor σΟϨΫτϦͱ͔ɺ࢖͑ͳ͍ɻ • dep, glide, gvt ͳͲݢฒΈ࢖͑·ͤΜɻ • ےྗͰΧόʔʂʂ • ϓϩδΣΫτϕʔεͷґଘ؅ཧ 45
47. gb ʹΑΔvendoring • gb vendor ίϚϯυʹΑΔґଘ؅ཧ • fetch, update, purge ౳ͻͱ௨ΓͰ͖Δɻ 47
48. gb ʹΑΔvendoring • gb vendor ίϚϯυʹΑΔґଘ؅ཧ • fetch, update, purge ౳ͻͱ௨ΓͰ͖Δɻ • ͨͩɺinit ͚ͩαϒίϚϯυ͕ແ͍ͷͰɺےྗ 48
49. gb ʹΑΔvendoring • gb vonder ίϚϯυʹΑΔґଘ؅ཧ • fetch, update, purge ౳ͻͱ௨ΓͰ͖Δɻ • ͨͩɺinit ͚ͩαϒίϚϯυ͕ແ͍ͷͰɺےྗ 49 
    HP
    MJTU
    Gb\\SBOHF
    *NQPSUT^^\\^^\\FOE^^\\SBOHF
    5FTU*NQPSUT^^\\^^ \\FOE^^
     71"5) 
    c
    US
    
    aO
    c
    TPSU
    c
    VOJR
    c
    HSFQ
    &
     a DPNcPSHc JO  
    c
    YBSHT
    O
    *\^
    TI
    D
    HC
    WFOEPS
    GFUDI
    \^
50. gb ʹΑΔ GOPATH ؅ཧ • gb gae ίϚϯυʹΑΔ GOPATH ͷ؅ཧ • test, serve, deploy ͷ GOPATH Λղܾͯ͘͠ΕΔɻ • ެࣜఏڙͰ͸ແ͍ͷͰɺผ్Πϯετʔϧ͢Δɻ • go get -u github.com/PalmStoneGames/gb-gae 50
51. ConfigurationͬͯͲ͏ͳͷʁ
52. Configuration ʹ͍ͭͯ • The Twelve-Factor App - https://12factor.net/ • The twelve-factor app stores config in environment variables. 52
53. Configuration ʹ͍ͭͯ • The Twelve-Factor App - https://12factor.net/ • The twelve-factor app stores config in environment variables. • GAE ΋ಉ͡ࢥ૝ͳͷͰɺ؀ڥม਺ʹೖΕ·͠ΐ͏ɻ 53
54. Configuration ʹ͍ͭͯ • Test ͷͱ͖͸ɺͲ͏͢Δͷ͔ʁ 54
55. Configuration ʹ͍ͭͯ • Test ͷͱ͖͸ɺͲ͏͢Δͷ͔ʁ • ં֯ Go ࢖ͬͯΔΜͩ͠ɺ direnv ࢖͓͏ɻ • ./test/.envrc ʹςετ༻ͷ؀ڥม਺Λઃஔ͢Δɻ 55 
    EJSFOW
    FYFD
    UFTU
    HC
    HBF
    UFTU
    TSDʜ
56. Agenda 1. ࣗݾ঺հ 2. GAE ʹ͍ͭͯ 3. GAE ্Ͱͷ Go app ͷצͲ͜Ζ 4. ӡ༻͢Δͱ͖ͷ Tips 5. ·ͱΊ 56
57. ӡ༻͢Δͱ͖ͷ Tips
58. Deploy ͬͯͲ͏ͳͷʁ • Traffic migration Λ࢖͏ͱɺ͍Ζ͍ΖͰ͖Δɻ • Blue/Green deployment, Canary Release 58
59. Deploy ͬͯͲ͏ͳͷʁ • Traffic migration Λ࢖͏ͱɺ͍Ζ͍ΖͰ͖Δɻ • Blue/Green deployment, Canary Release • context Λ࢖ͬͨࣄલॲཧ 59
60. Deploy ͬͯͲ͏ͳͷʁ • Traffic migration Λ࢖͏ͱɺ͍Ζ͍ΖͰ͖Δɻ • Blue/Green deployment, Canary Release • context Λ࢖ͬͨࣄલॲཧ 60
61. Monitoring ͬͯͲ͏ͳͷʁ • Stackdriver ͕ɺͻͱ௨Γʹͳͬͯ͘ΕΔɻ • http status code, datastore, taskqueue etc.
62. Monitoring ͬͯͲ͏ͳͷʁ • Stackdriver ͕ɺͻͱ௨Γʹͳͬͯ͘ΕΔɻ • http status code, datastore, taskqueue etc. • Error log ؂ࢹ΋ɺStackdriver Logging ͱ࿈ܞͰ͖Δɻ • Slack ࿈ܞ΋ϥΫϥΫ
63. Agenda 1. ࣗݾ঺հ 2. GAE ʹ͍ͭͯ 3. GAE ্Ͱͷ Go app ͷצͲ͜Ζ 4. ӡ༻͢Δͱ͖ͷ Tips 5. ·ͱΊ 63
64. ·ͱΊ • …ʹೖΔલʹ Release Notes ͷ֬ೝ IUUQTDMPVEHPPHMFDPNBQQFOHJOFEPDTTUBOEBSEHPSFMFBTFOPUFT
65. ·ͱΊ • Go 1.8 ͸΍͍͘͜ʂʂʂ
66. Thanks for your attention.