API を Firebase Realtime Database に移行して気付いたこと

by syamaoka

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API Λ Firebase Realtime Database ʹҠߦͯ͠ؾ෇͍ͨ͜ͱ 2017/08/28 syamaoka GCPUG Firebase Realtime Database /meetup/1

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ࣗݾ঺հ ໊લɿ ࢁԬ ਅ໵ (syamaoka) झຯɿ ɾ MMO RPG ɾ PC : Tales Weaver ɾ Mobile : Lineage 2 Revolution ɾ MoBA : VainGlory ୲౰ɿ ɾ iOS, όοΫΤϯυ (API, Batch)

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୲౰தαʔϏεͰꙍ ֵአͭͼ͚Ρ䱛ᚆ • Realtime Database • Remote Conﬁg • Firebase Authentication • Analytics • App Indexing • Firebase Performance Monitoring

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୲౰தαʔϏεͰꙍ ֵአͭͼ͚Ρ䱛ᚆ • Realtime Database <- ࠓ೔͸͜͜Λத৺ʹ࿩͠·͢ ! • Remote Conﬁg • Firebase Authentication • Analytics • App Indexing • Firebase Performance Monitoring

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ΞδΣϯμ • API -> Firebase Realtime Database • ΞϓϦଆͷ࣮૷ • ηΩϡϦςΟϧʔϧʹ͍ͭͯ

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Firebase ʹٻΊ͍ͯΔ͜ͱ • API ࡞੒޻਺ͷܰݮ • ύϑΥʔϚϯενϡʔχϯά͔Βͷ୤٫ • ΦϑϥΠϯ࣌ͷσʔλͷѻ͍΍͢͞ʢॲཧͷ؆୯͞ʣ

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API -> Firebase Realtime Database

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Ұ൪ࠔͬͨʢࠓ΋ෆ҆ʣͷ͸ɺ ੔߹ੑ !

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݁࿦

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ΞϓϦέʔγϣϯίʔυΛ৴͡ΔʢఘΊʣ Firebase ͸ RDB Ͱ͸ͳ͍ͨΊɺ֎෦Ωʔ੍໿͕ͳ͍ɻ ͦͷͨΊɺ݁߹͕ඞཁͳՕॴ͸ొ࿥͢ΔࡍʹίʔυͰ֬ೝɻ εΩʔϚϨε(Ұ؏ੑ͕ͳ͍)Ͱ΋ɺ݁߹͢΂͖͔൱͔Λ൑அ͠ɺ ࠷దͳઃܭΛ͍ͯ͘͠ͷ͕ॏཁɻ ! ΤϯδχΞͷ࿹ͷݟͤॴ !

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ιʔτͷಛ௃ • ΩʔΛࢦఆͯ͠ঢॱͰऔಘ • ฦ٫͢Δσʔλͷॱ൪͸อূ͍ͯ͠ͳ͍

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ιʔτͷಛ௃ • ΩʔΛࢦఆͯ͠ঢॱͰऔಘ • ฦ٫͢Δσʔλͷॱ൪͸อূ͍ͯ͠ͳ͍

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ฦ٫͢Δσʔλͷॱ൪͸อূ͍ͯ͠ͳ͍ ྫ͑͹ created_at Ͱιʔτ͠ɺ ࠷৽σʔλΛ 10 ݅औಘͨ࣌͠ɺ ฦ٫͞ΕΔσʔλ͸࠷৽σʔλͷ 10 ͕݅ͩɺ ฦ٫͞ΕΔ JSON ͷฒͼॱ͸อূ͞Ε͍ͯͳ͍

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No content

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Q. ͭ·ΓΞϓϦଆ͸Ͳ͏͢Ε͹͍͍ʁ A. ฦ٫͞Εͨ஋Λιʔτ͠௚͢ɻ

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߱ॱʹ͢Δʹ͸ʁ • created_at Λ - ͷ஋ʹͯ͠ɺ߱ॱʹͳΔ key Λੜ੒ https://stackoverﬂow.com/questions/34156996/ﬁrebase- data-desc-sorting-in-android/42572025#42572025 • શ݅औಘͯ͠ΞϓϦଆͰ߱ॱʹฒͼସ͑Δ • QueryLastTo Λ࢖ͬͯ࠷ޙͷσʔλ͔Βऔಘ͢Δ

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ϩδοΫॱʹ͢Δʹ͸ʁ ϩδοΫʹΑΔฒͼॱ͸ɺ Firebase Realtime Database ͚ͩͰ͸೉͍͠ɻ

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ιʔτ༻ͷσʔλΛ࡞੒ { "articleOrders": { "articleId1": 1, "articleId2": 2 } }

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ϝϦοτ • ࠷খݶͷࢀর • ΞϓϦͷมߋͳ͠ʹཪଆͰॱ൪Λมߋग़དྷΔ ※ articles ͷதʹ order Λ༻ҙͨ͠৔߹ɺarticles શͯΛಡ ΈࠐΉඞཁ͕͋ΓɺύϑΥʔϚϯε͕ѱ͍ ❌

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σϝϦοτ • ߋ৽ִ͕ؒ୹͘ग़དྷͳ͍ • ̍࣌ؒຖʹߋ৽ͱ͔Ͱ͋Ε͹େৎ෉͕ͩɺ5෼ຖͱ͔ͩͱ ͖ͬͱݫ͍͠ • ܭࢉର৅ͷσʔλྔʹݶք͕͋Δ

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Cloud Function ͱ࢖͍ ෼͚Α͏ !

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Rule ʹ͍ͭͯ

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Rule ͸େମҎԼͷ̐ͭ • Read and Write • Type • Require • index

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ܕͷࢦఆํ๏ { "article": { "title": { ".validate": "newData.isString()" }, "visible": { ".validate": "newData.isBoolean()" } } }

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ඞਢύϥϝʔλͷࢦఆํ๏ { "article": { ".validate": "newData.hasChildren(['title','visible'])" } }

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Index ͷࢦఆํ๏ { "article": { ".indexOn": [ "title" ] } }

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γϛϡϨʔλ͕͍͢͝ศར !

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Demo

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͔͠͠ɺ͜ΕΛखೖྗͰ શ෦؅ཧ͢Δͷ͸େม !

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⚠ 8/28 ࣌఺ β ver

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Demo

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ઃఆϑΝΠϧ https://gist.github.com/bpyamasinn/ c1f62153f0bea8a499c111f4f30c8546

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Index ͷઃఆ͚ͩগ͠΍͔͍ͬ Index ͸ Path Ͱࢦఆ͠ͳͪ͘Ό͍͚ͳ͍ͨΊɺ Type ʹهࡌग़དྷͳ͍ͨΊɺδΣωϦΫεΛ࢖ͬͯఆٛͨ͠ࡍʹ ៉ྷʹॻ͚ͳ͍෦෼͕ग़ͯ͘Δ !

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Client Side Join

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σʔλྫ { "articles" : { "hogeId" : { "title" : "λΠτϧ", "category" : "categoryID_1" } }, "categories" : { "categoryID_1" : { "name": "ήʔϜ" } } }

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ํ๏ RxSwift ͷ zip Λ༻͍ͯϚʔδ͢Δ

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݁߹ͷྲྀΕ 1. articles ͱ categories Λฒྻʹऔಘ 2. RxSwift ͷΦϖϨʔλ zip Λ༻͍ͯɺ྆ํͷσʔλΛऔಘ͢Δ 3. ྆σʔλΛ݁߹͢Δ

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ΞϓϦଆͰͷιʔτ΍ߜΓࠐΈ ެࣜυΩϡϝϯτʹهࡌ͞Ε͍ͯΔ௨Γɺ ΫϥΠΞϯταΠυͰͷιʔτ΍ϑΟϧλϦϯά͸ਪ঑͞Εͯ ͍ͳ͍ ❌

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