実践 WorkManager / WorkManager

by atsushisakai

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࣮ફ WorkManager ञҪ ಞ @_atsushisakai mixi, Inc. DroidKaigi 2019 Feb. 8 17:40~ Room 1

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ञҪ ಞ @_atsushisakai 2011೥ mixi, Inc.ೖࣾ 2014೥ Ո଒ΞϧόϜʮΈͯͶʯͷ։ൃ։࢝ ʢiOS൛ͷ୲౰ʣ 2018೥ ΈͯͶࣄۀ෦։ൃάϧʔϓϚωʔδϟʔ ݉ SRE

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͜ͷൃදͰ͓࿩͍ͨ͜͠͠ͱɾͶΒ͍ • ղܾ͢΂͖՝୊͸ͳΜͩͬͨͷ͔ʁ • ͳͥWorkManagerΛબ୒ͨ͠ͷ͔ʁ • ͦͷ੒Ռ͸ʁ • ࣄྫΛ͓఻͑͢Δ͜ͱͰɺ՝୊ղܾͷબ୒ࢶΛ૿΍ͯ͠΋Β͍͍ͨɻ

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1 ʮΈͯͶʯʹ͍ͭͯ

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ʮΈͯͶʯʹ͍ͭͯ ಛ௃ ࢠڙͷࣸਅ΍ಈըΛڞ༗ɺ੔ཧ Ո଒͚ͩͰ҆৺ͯ͠࢖͑ΔΞϧόϜΞϓϦ 2019೥1݄࣌఺ͰϢʔβʔ਺400ສਓ 1

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ʮΈͯͶʯʹ͍ͭͯ 2017೥7݄ ӳޠ൛ͷఏڙ։࢝ 1

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՝୊ 2

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՝୊ ࣸਅͷද͕ࣔ஗͍ • ւ֎ͷϢʔβʔ͔Βͷ໰͍߹ΘͤɾϨϏϡʔ͕ଟ͔ͬͨɻ • ࣌ંɺࠃ಺ʹ͓͍ͯ΋੠͸্͕͍ͬͯͨɻ 2

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՝୊ ෼ੳ: Ͳͷ͙Β͍஗͍ͷ͔ʁ 2

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՝୊ 2

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Response Time 0.71 sec. Response Time 0.17 sec.

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ݱ࣮: New York MidtownͷWeWork Wi-FiͰίϨ

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՝୊ ղܾ͍ͨ͜͠ͱ • ฏۉ஋0.54ඵͷࠩΛຒΊΔͨΊͷUXվળɻ • ੈքதͷͲͷࠃͰ΋೔ຊͱಉ͡ʢ0.17ඵҎԼʣମݧΛͯ͠΋Β͍͍ͨɻ 2

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WorkManagerΛ࠾༻͢Δ·ͰͷܦҢ 3

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No content

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CDNʹͳΔૣͰΩϟογϡͤ͞Ε͹ྑ͍ͷͰ͸ʁ WorkManagerΛ࠾༻͢Δ·ͰͷܦҢ 3

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AndroidΞϓϦͷىಈલʹը૾ΛΩϟογϡ͓͚ͯ͠͹ྑ͍ͷͰ͸ʁ WorkManager Λ࠾༻͢Δ·ͰͷܦҢ 3

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େࡶ೺ͳཁٻ 1. ΞϓϦ͕ىಈ͍ͯ͠ͳ͍࣌ʹॲཧΛߦ͏͜ͱɻ 2. Wi-Fi઀ଓ͍ͯ͠Δ࣌ͷΈॲཧΛߦ͏͜ͱɻ 3. όοςϦʔ͕ॆ෼ʹ͋Δͱ͖ʹॲཧΛߦ͏͜ͱɻ 4. ৽͍͠ΩϟογϡΛऔಘ͢ΔͨΊʹ1೔ʹ1ճ͘Β͍͸ॲཧΛߦ͏͜ͱɻ 5. minSdkVersion 19Ͱ΋ಈ͘ϓϩάϥϜͰ͋Δ͜ͱɻ WorkManager Λ࠾༻͢Δ·ͰͷܦҢ 3

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WorkManagerͱ͸ʁ • όοΫάϥ΢ϯυδϣϒΛ࣮ߦɾ؅ཧ͢ΔͨΊͷAndroid Jetpackίϯϙʔωϯτ • ΞϓϦ͕ऴྃͯ͠΋࣮֬ʹλεΫΛऴ͍͑ͨॲཧΛ࣮ߦͤ͞Δ • ༷ʑͳ੍໿ʢConstraintsʣΛ૊Έ߹Θͤͯδϣϒͷ࣮ߦΛ੍ޚ͢Δ͜ͱ͕Ͱ͖Δ • API 14Ҏ߱Ͱಉ͡ίʔυ͕ಈ͘ • API 23+Ͱ͸JobScheduler͕࢖ΘΕΔ • API 14~22Ͱ͸AlarmManager + BroadcastReceiver͕࢖ΘΕΔ WorkManager Λ࠾༻͢Δ·ͰͷܦҢ 3

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WorkManager͸ը૾Ωϟογϡʹ࠷ద WorkManager Λ࠾༻͢Δ·ͰͷܦҢ 3

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࣮૷ 4

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࣮૷ 4 Synchronizer Server/CDN SQLite WorkManager Worker Glide Synchronizer Server/CDN SQLite WorkManager Worker Glide Request Metadata Response Metadata Save Metadata Enqueue Job Cache Image Select Metadata Request Image Response Image Execute Job

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Enqueue Job ࣮૷ 4

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Constraints ෇͖ͷ Enqueue • Wi-FiωοτϫʔΫʹ઀ଓ͍ͯ͠Δ • όοςϦʔ͕ॆ෼ʹ͋Δɺ΋͘͠͸ॆిதͰ͋Δ ࣮૷ 4

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࣮૷ 4

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Jobͷ܁Γฦ࣮͠ߦ • 24࣌ؒʹ1ճ࣮ߦ͍ͤͨ͞ɻ ࣮૷ 4

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࣮૷ 4

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࣮૷ 4

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PeriodicWorkRequest • ܁Γฦ͠ಉ͡JobΛIntevalຖʹ࣮ߦͤ͞ΔΑ͏WorkManagerʹϦΫΤετ͢Δɻ • ࠷ॳͷ࣮ߦ͸ଈ࣌΋͘͠͸੍໿Λຬͨͨ͠௚ޙʹߦΘΕΔɻ https://developer.android.com/reference/androidx/work/PeriodicWorkRequest ࣮૷ 4

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࣮૷ 4

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࣮૷ 4

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enqueueUniquePeriodicWork • ϢχʔΫͳ໊લͷ෇͍ͨPeriodicWorkRequestΛৗʹͻͱ͚ͭͩenqueue͞Ε͍ͯΔঢ়ଶΛอূͰ͖Δɻ • ಉ࣌ʹ;ͨͭͷJob͕ฒྻʹಈ͘ඞཁ͕ແ͍৔߹ʹ࠷దͳenqueueํ๏ɻ https://developer.android.com/reference/androidx/work/WorkManager#enqueueUniquePeriodicWork ࣮૷ 4

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Execute Job ࣮૷ 4

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Workerͷ࣮૷ • ࣮૷಺༰͸୯७ • SQLite͔ΒϨίʔυΛऔಘ • URLʹΞΫηε͠ը૾Λऔಘ • Glideʹऔಘͨ͠ը૾ΛΩϟογϡ ࣮૷ 4

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࣮૷࣌ͷTIPS΍஫ҙࣄ߲ 5

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Worker͸ႈ౳ੑΛ୲อͨ͠ॲཧΛॻ͘ • ಉ͡ύϥϝʔλͰෳ਺ճJob͕enqueue͞Ε࣮ߦ͞Εͯ΋ৗʹಉ݁͡Ռɾঢ়ଶ͕ฦΔΑ͏ʹ࣮૷͢Δɻ ࣮૷࣌ͷTIPS΍஫ҙࣄ߲ 5

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ϦτϥΠͷڍಈΛཧղ͢Δ • σϑΥϧτ͸BackoffPolicy.EXPONENTIAL • WorkSpec#calculateNextRunTime ΛಡΉͱΞϧΰϦζϜΛཧղͰ͖Δɻ • ࠷ऴతʹ਺೔ޙʹJob͕ϦτϥΠ͞ΕΔ͜ͱ΋͋ΓಘΔɻ • ϦτϥΠճ਺ͷ࠷େ஋͸ઃఆͰ͖ͳ͍ɻ • Worker#getRunAttemptCount Ͱݱࡏͷࢼߦճ਺Λऔಘ͠ɺFailureͰऴ͑Δɻ • ͦ΋ͦ΋ҙਤ͠ͳ͍ϦτϥΠ͕ߦΘΕͳ͍Α͏ʹΤϥʔϋϯυϦϯά͓ͯ͘͠ࣄ΋ॏཁɻ ࣮૷࣌ͷTIPS΍஫ҙࣄ߲ 5

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WorkerͷίʔυΛΞοϓσʔτ͢Δͱ͖ʹ͸஫ҙ • InputDataͷܕ΍ΩʔΛແҋʹมߋͯ͠͠·͏ͱɺલͷόʔδϣϯͰenqueueͨ͠Job͕Ξοϓσʔτޙ ʹ࣮ߦ͞ΕͯɺWorkerͷ࣮૷͕มΘͬͯҙਤ͠ͳ͍ΤϥʔʹͳΔɻ • WorkerͷΫϥε໊Λมߋͨ͠৔߹͸ɺ࣮ߦ࣌ʹinitͰ͖ͣɺ͙͢ʹFailureѻ͍ʹͳΔɻ ࣮૷࣌ͷTIPS΍஫ҙࣄ߲ 5

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Worker͸λΠϜΞ΢τ͞ΕΔ • Jobຖʹ10෼ؒͷλΠϜΞ΢τ஋͕ଘࡏ͍ͯ͠Δɻ • ௕͘ͳΓͦ͏ͳॲཧΛ࣮ߦ͢Δͱ͖͸ɺॲཧͷ୯ҐΛࡉ෼Խ͠ෳ਺ͷWorkerΛνΣʔϯ͢ΔΑ͏ ʹߏ੒͢Δɻʢ࣍ϖʔδࢀরʣ ࣮૷࣌ͷTIPS΍஫ҙࣄ߲ 5

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࣮૷࣌ͷTIPS΍஫ҙࣄ߲ 5 https://developer.android.com/reference/androidx/work/WorkManager

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WorkerΛcancel͢Δ࣌ͷڍಈʹ஫ҙ • WorkManagerʹWorkerΛcancel͢ΔΠϯλʔϑΣʔε͕͋Δ͕શͯϕετΤϑΥʔτͰ͋Δɻ • ಈ͍͍ͯΔWorker͕͙͢͞·ఀࢭ͞ΕΔΘ͚Ͱ͸ͳ͍ɻ • ಈ͍͍ͯΔWorker͕cancelཁٻ͞Εͨͱ͖ʹԿ͔Λ͍ͨ͠৔߹͸ҎԼΛ֬ೝ͢Δɻ • onStopped͕࣮ߦ͞ΕΔ • isStoppedͰtrue͕ฦΔΑ͏ʹͳΔ ࣮૷࣌ͷTIPS΍஫ҙࣄ߲ 5

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QA͕೉͍͠ • όοΫάϥ΢ϯυॲཧ͸ݟ͑ͳ͍ͷͰσόοάը໘Λ༻ҙ͢ΔͳͲͯ͠޻෉͢Δɻ • ඞཁʹԠͯ͡WorkInfoΛऔಘͯ͠Jobͷঢ়ଶΛݟ͑ΔΑ͏ʹ͓ͯ͘͠ɻ ࣮૷࣌ͷTIPS΍஫ҙࣄ߲ 5

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ςετʹ͍ͭͯ 6

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ͲͷΑ͏ʹςετΛهड़͢Δͷ͔ • WorkerΛಉظ࣮ߦ͠ɺҰ࿈ͷTransactionͷ಺༰Λςετ͢Δɻ • WorkManagerTestInitHelperͱ͍͏Ϋϥε͕༻ҙ͞Ε͍ͯΔͷͰ͜ΕΛར༻͢Δɻ • ςετͷ಺༰ • WorkInfo#outputDataΛ֬ೝͨ͠Γɺґଘ͢ΔϥΠϒϥϦͷverifyΛߦͳ͍ͬͯ͘ɻ ςετʹ͍ͭͯ 6

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WorkManagerTestInitHelperʹ͍ͭͯ • Test࣮ߦ࣌ͷContextΛ࢖ͬͯγϯάϧτϯͳWorkManagerΛinitͤ͞Δɻ • TestDriverΛੜ੒͠ɺConstraintsʢ੍໿ʣΛِ૷͠ɺWorkerΛ͙͢ʹ࣮ߦ͢Δ͜ͱ͕Ͱ͖Δɻ ςετʹ͍ͭͯ 6

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ςετʹ͍ͭͯ 6

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• https://issuetracker.google.com/issues/122553577 > We never supported Roboelectric. All WorkManager tests need to run as an Android   > instrumentation test. ςετʹ͍ͭͯ 6

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੒Ռ 7

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Response Time 0.71 sec. Get from cache

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େ੒ޭ • UI্ͷϩʔυ஗Ԇ͸Ұ੾ͳ͘ͳͬͨɻ • ϨεϙϯελΠϜΛҙࣝ͢Δඞཁ͕ͳ͘ͳΓɺੈքதͰಉ͡ମݧΛఏڙͰ͖ΔΑ͏ʹͳͬͨɻ ੒Ռ 7

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࢒͞Εͨ՝୊ 8

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୺຤ଆͷϦιʔεʹཔΓ͗͢ • ୺຤ͷόοςϦʔɾετϨʔδɾωοτϫʔΫϦ ιʔεʹগͳ͔ΒͣෛՙΛ͔͚͍ͯΔɻ • όοΫάϥ΢ϯυδϣϒͷڍಈΛϢʔβʔ͕೚ҙ ʹௐ੔Ͱ͖ΔΑ͏ͳUIΛ༻ҙ͍ͯ͠Δɻ ࢒͞Εͨ՝୊ 8

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ϦΫΤετʹඥ෇͔ͳ͍CDN΁ͷ೚ҙΩϟογϡػೳ͕ແ͍໰୊ • AWSଆʹڧ͘ػೳϦΫΤετΛ͍ͯ͠Δʂ • ͦͷػೳΛ࣋ͭAWSҎ֎ͷCDNΛ࢖͏બ୒ࢶ΋͋Δʹ͸͋Δɻ ࢒͞Εͨ՝୊ 8

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·ͱΊ 9

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• WorkManagerΛ࢖ͬͨUXվળͷࣄྫΛ͝঺հ͠·ͨ͠ɻ • ࣮ફతͳഎܠΛ౿·࣮͑ͨ૷࣌ͷϙΠϯτ΍஫ҙͨ͜͠ͱɾςετͷख๏ͳͲΛ͝঺հ͠·ͨ͠ɻ ·ͱΊ 9

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THANK YOU!!