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Golangでリクエストごとのクエリログが見たい!! kamakura.go #4 /...
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serinuntius
May 25, 2018
Technology
1
920
Golangでリクエストごとのクエリログが見たい!! kamakura.go #4 / go-query-and-request-logger
kamakura.go #4 LT枠
https://serinuntius.hatenablog.jp/entry/2018/05/01/083000
serinuntius
May 25, 2018
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Transcript
GolangͰϦΫΤετ͝ͱͷ ΫΤϦϩά͕Έ͍ͨʂʂ 2018-05-25 kamakura.go #4 LT ໘ന๏ਓΧϠοΫ ۔Ѯ @_serinuntius
ҙ ⚠ܕগͳΊͰ͢⚠
Ξϯέʔτ
ISUCON ͬͯΒͬ͠ΌΔํʙ
ISUCON ग़ͨ͜ͱ͋ΔΑͬͯํʙ
ISUCONͱʁ
͓ͱͳΔWebαʔϏεΛ ܾΊΒΕͨϨΪϡϨʔγϣϯͷதͰ ݶք·ͰߴԽΛਤΔ νϡʔχϯάότϧɺ ͦΕ͕ISUCONͰ͢ɻ ISUCONެࣜBlogͷdescriptionΑΓ
ͪͳΈʹ ࣾISUCON͔͠ ग़ͨ͜ͱ͋Γ·ͤΜ
ࣾISUCONͰݟ͑ͨ՝ • ΫΤϦͷൃߦճΛߟྀ͠ͳ͚Ε͍͚ͳ͍ (ൃߦճ͕গͳ͍ɺ͍͚ͩͷΫΤϦ͋Δ) w w • Ͳ͜ͰΫΤϦ͕ൃߦ͞Ε͍ͯΔ͔Γ͍ͨ • ͬͱݴ͑ͲͷϦΫΤετͰ
ͲΕ͚ͩݺΕͯΔ͔Γ͍ͨ • GoͰग़͍ͨ(ܕ͕͋ͬͨํ͕ΞϓϦͷϦϑΝΫλ͕͠қ͍)
ࣾISUCONͰͷ লΛ׆͔ͨ͢Ίʹ
ΞΫηεϩΨʔ ͱ ΫΤϦϩΨʔΛ࡞ͬͨ
github.com/serinuntius/graqt ര
͍ํ εςοϓ1~import~ • 2ͭͷύοέʔδΛimport͢Δ
͍ํ εςοϓ2 ~driverΛڥมͰΓସ͑Δ~ • driverΓସ͑ͱtraceΛΦϯΦϑ͢Δ
͍ํ εςοϓ3 ~middlewareՃ~ • aliceΛ͏
͍ํ εςοϓ4 ~SQLݺͼग़͠ݩͷcontextରԠ~ • http.Request͔ΒcontextऔΓग़ͯ͠ɺ ݺͼग़͢ͱ͖ʹ͢
ٕज़తͳ͜ͱ
ϦΫΤετʹUUIDΛຒΊࠐΉ • middleware.go UUID=>ϦΫΤετͱΫΤϦΛඥ͚ΔͨΊ
ϦΫΤετʹUUIDΛຒΊࠐΉ • middleware.go UUID=>ϦΫΤετͱΫΤϦΛඥ͚ΔͨΊ ίϯςΩετʹೖΕΔཧ༝ =>ޙͰΫΤϦͱUUIDΛඥ͚ΔͨΊ
ϋΠύϑΥʔϚϯεͳ ߏԽϩΨʔ • uber-go/zap • RLogger͕request༻ͷzapͷLogger ࠓճͷਃ͠༁ఔͷܕཁૉ
ϋΠύϑΥʔϚϯεͳ ߏԽϩΨʔ {"level":"info", "ts":1525082389.1337767, "caller":"graqt/middleware.go:25", "msg":"", "time":0.011566198, "request_id":"5914e629-6746-42c5- z342-702f224f48e1", "path":"/user",
"method":"POST" } • ܕΛࢦఆͯ͠Δ͔Β͍
ΫΤϦΛτϨʔε͢Δ • shogo82148/go-sql-proxy • database/sqlͲΜͳDBʹରԠͰ͖ΔΑ͏ʹͳͬͯ ͍Δ • database/sql/driverʹ͋ΔinterfaceΛຬͨͯ͠ΕOK • ϓϩΩγ࡞ͬͯͦͷ··ͤϩάΛు͚ΔͷͰʁ
• ͱ͍͏ൃͰ࡞ΒΕͨΒ͍͠Ͱ͢*1 *1GoݴޠͰSQLͷτϨʔεΛ͢Δ https://shogo82148.github.io/blog/2015/05/13/golang-sql-proxy/
φΠεͳinterfaceͩʂʂ (͑) ࠓճͷืूཁ߲ˠ
ΫΤϦΛτϨʔε͢Δ • go-sql-proxyʹඪ४ͰΫΤϦϩΨʔ͕͋Δ • ࠓճUUIDΛϩάʹు͖͍ͨؔͰ ࣗલͰఆٛ
ΫΤϦτϨʔαʔͷ࣮ • tracer.go
ΫΤϦτϨʔαʔͷ࣮ • preܥͰݱࡏ࣌ࠁΛฦ͢ • cͷcontextʹrequestͷuuid͕ೖ͍ͬͯΔ • ctxʹpreܥͷݱࡏ࣌ࠁ͕ೖ͍ͬͯΔ
࣮ࡍʹు͔ΕΔϩά • request.log {"level":"info","ts":1525082389.1337767,"caller":"graqt/middleware.go: 25","msg":"","time":0.011566198,"request_id":"5914e629-6746-42c5- b342-702f224f48e1","path":"/user","method":"POST"} • query.log {"level":"info","ts":1525082389.1336403,"caller":"graqt/tracer.go: 20","msg":"Exec","query":"INSERT
INTO `user` (email,age) VALUES (?, ?)","args":[{"Name":"","Ordinal": 1,"Value":"
[email protected]
"}, {"Name":"","Ordinal":2,"Value":57}],"time": 0.001157627,"request_id":"5914e629-6746-42c5-b342-702f224f48e1"}
͑ɺϩάు͚ͩ͘ʁ • ͪΐͬͱͬͯͯ • alpΈ͍ͨͳϩάΛूܭ͢ΔCLIΛ࡞த • ϦΫΤετ͝ͱʹΫΤϦݟΕΔΑ͏ʹ͠·͢ • tigΛΊͬͪΌγϯϓϧʹͨ͠ૢ࡞ײͷΠϝʔδ
ϩʔυϚοϓ ϩά͕ग़ΔΑ͏ʹͳͬͨ Kamakura.goͰLT (ΠϚίί)
ϩʔυϚοϓ ϩά͕ग़ΔΑ͏ʹͳͬͨ Kamakura.goͰLT (ΠϚίί) viewerͷ࡞
ϩʔυϚοϓ ϩά͕ग़ΔΑ͏ʹͳͬͨ Kamakura.goͰLT (ΠϚίί) viewerͷ࡞ ISUCON༧બ௨աͯ͠ ϒϩάͰհ͢Δ
ϩʔυϚοϓ ϩά͕ग़ΔΑ͏ʹͳͬͨ Kamakura.goͰLT (ΠϚίί) viewerͷ࡞ ISUCON༧બ௨աͯ͠ ϒϩάͰհ͢Δ (୭͔͕graqtͬͯ) ISUCON༏উ͢Δ
ϩʔυϚοϓ ϩά͕ग़ΔΑ͏ʹͳͬͨ Kamakura.goͰLT (ΠϚίί) viewerͷ࡞ ISUCON༧બ௨աͯ͠ ϒϩάͰհ͢Δ (୭͔͕graqtͬͯ) ISUCON༏উ͢Δ
100ສͰʹ মᇋͬͯ͘ΕΔ
·ͱΊ • serinuntius/graqtΛ͑ɺ ISUCONʹศརͦ͏ͳϩά͕ు͚Δ • ISUCONҎ֎ʹͪΖΜ͑Δ • OSSͳͷͰποίϛͱ͔ؾܰʹͲ͏ͧ • ISUCON༏উͯ͠মᇋͬͯ͘Ε