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ブラウザで一緒に音楽をつくる
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nishaya
March 30, 2018
Technology
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ブラウザで一緒に音楽をつくる
オンライン同期可能なシーケンサーを作る話
nishaya
March 30, 2018
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Transcript
ϒϥβͰ(Ұॹʹ)ԻָΛͭ͘Δ ɹ SpeeeKaigi 2018/03/30 ೋࣾ୩ ߉༎ @nishaya 1
ࣗݾհ • ೋࣾ୩ ߉༎ • GitHub: @nishaya • WebΞϓϦέʔγϣϯΤϯδχΞ •
(ג) Speee ϓϩδΣΫτਪਐࣨ/LM 2
લճ·Ͱͷ͋Β͢͡ γϯηαΠβʔΛ࡞ͬͨ1-1 - ϒϥβͰԻΛ໐Β͢ - ՝: Web Audio APIͷ੍ޚʹReact/ ReduxΛ͏
1-1 ReactͰγϯηαΠβʔΛ࡞ͬͨ - Speee DEVELOPER BLOG h4p:/ /tech.speee.jp/entry/2017/04/06/100000 3
લճ·Ͱͷ͋Β͢͡ ύλʔϯγʔέϯα࡞ͬͨ1-2 - ϒϥβʹԻָΛԋ͍ͤͨ͞ - ͍ͭͰʹαϯϓϥʔΛଂͨ͠ - ՝: λΠϛϯά੍ޚ 1-2
ReactͰύλʔϯγʔέϯαΛ࡞ͬͨ - Speee DEVELOPER BLOG h5p:/ /tech.speee.jp/entry/2017/10/26/105100 4
લճ·Ͱͷ͋Β͢͡ FMԻݯ࡞ͬͨ1-3 1-3 ࡞ΕΘ͔ΔɺFMԻݯ - Իָ͕Ͱ͖ͳ͍ h(p:/ /nomusiclife.hatenablog.jp/entry/2017/12/14/194428 5
ࠓճղܾ͍ͨ͠՝ • ը໘্ͰۂΛΤσΟοτͰ͖ΔΑ͏ʹ͍ͨ͠ • ࡞ͬͨۂΛΫϥυ্ʹࣗಈอଘ͍ͨ͠ 6
Ͱ͖ͨ 7
DEMO 8
༻ٕͨ͠ज़ • React/Redux • TypeScript • Firebase(Cluod Firestore/Auth/Hos<ng) • άϦουSVG
as JSX 9
͓͓·͔ͳߏ • ۂσʔλΛReduxͷstateʹஔ͖ɺmapStateToPropsͰReact componentʹ͢ • ϊʔτͷฤू(ՃɾআͳͲ)ac6onΛdispatch͠ɺreducerͰ Redux stateΛॻ͖͑Δ 10
11
Cluod Firestore • ۂσʔλͷอଘઌCloud Firestore(2018/03/30࣌Ͱϕʔ λ൛) • ࠷ۙFirebaseʹՃ͞ΕͨɺReal9me DatabaseʹΘΔ৽͍͠ σʔλϕʔε2-1
2-1 σʔλϕʔεΛબ: Cloud Firestore ·ͨ Real3me Database | Firebase h9ps:/ /firebase.google.com/docs/database/rtdb-vs-firestore 12
Firestoreͷσʔλಉظ • Reduxͷstateʹ͋Δۂσʔλʹมߋ͕͋ͬͨΒߋ৽͠Α͏ͱࢥ ͍͕ͬͯͨ... 13
Snapshot Listener • υΩϡϝϯτͷߋ৽Λɺσʔλ͕όοΫΤϯυʹૹ৴͞ΕΔ લʹݕ͢ΔͨΊͷΈ2-2 • Op&mis&c Updates(ָ؍తߋ৽)Λ࣮ݱͰ͖Δ • DBͷอଘ͕ޭ͢Δͱ͍͏લఏͷͱɺUIΛߋ৽͢Δ
2-2 Cloud Firestore ͰϦΞϧλΠϜ ΞοϓσʔτΛೖख͢Δ | Firebase h3ps:/ /firebase.google.com/docs/firestore/query-data/listen 14
• listenerΛઃఆ • ߋ৽͞ΕͨυΩϡϝϯτΛReduxͷstoreʹอଘ 15
• UI͔ΒτϦΨʔ͞ΕͨมߋΛ·ͣϩʔΧϧʹ͋ΔυΩϡϝϯτ ʹө • มߋόοΫΤϯυʹૹ৴͞ΕΔલʹϩʔΧϧͷυΩϡϝϯτ ʹରͯ͠ߦΘΕɺଈ࣌݁Ռ͕onSnapshotͷίʔϧόοΫʹΑͬ ͯ௨͞ΕΔ 16
Op#mis#c Updates • Firestore documentʹsnapshot listener Ληοτ • UIૢ࡞ΛىʹdocumentΛߋ৽ •
onSnapshotͷίʔϧόοΫͰReduxͷ stateΛߋ৽ • componentͷpropsʹมߋ͕ • શ͕ͯऴΘͬͨޙɺඇಉظʹόοΫΤ ϯυ͕update͞ΕΔ 17
෭࣍తʹΫϥΠΞϯτؒͷಉظ͕Ͱ͖ΔΑ͏ʹͳͬͨ • onSnapshotsnapshot listenerΛઃఆͨ͠υΩϡϝϯτʹϦϞ ʔτͰߋ৽͕ߦΘΕͨ߹ʹτϦΨʔ͞ΕΔ • ผΫϥΠΞϯτ͕listen͍ͯ͠ΔυΩϡϝϯτʹมߋΛߦ͏ͱɺ όοΫΤϯυʹมߋ͕౸ୡͨ͠ࡍʹߋ৽͞ΕͨυΩϡϝϯτͷ ༰͕ͦͷΫϥΠΞϯτʹ௨͞ΕΔ •
ಉظํɺ·ͨෳΫϥΠΞϯτؒͰՄೳ 18
19
DEMO 20
ࠓޙͷల։ • ϒϩοΫΛΈ߹ΘͤͯΞϨϯδͰ͖ΔΑ͏ʹ͢Δ • ΠϯτϩɺAϝϩɺBϝϩɺαϏ... • બͰ͖ΔԻݯํࣜΛՃ • όοΫΤϯυΛGraphQLͰ࣮͢Δ 21
ॴײ • FirestoreΛ͏͜ͱͰɺಛผͳ࣮ͳ͠ʹϚϧνΫϥΠΞϯτ ؒಉظ͕࣮Ͱ͖Δ • ͨͩ͠ɺஅଓతͳมߋͷಉظͰrate limitʹҙ͢Δඞཁ͋ Γ 22
ॴײ • ۂσʔλͷߏ͕ͦΕͳΓʹෳࡶͩͬͨͷͰɺTypeScriptͷܕ ͚͕ޮԽʹҰങͬͨ • ReactͰάϥϑΟΧϧ͔ͭΠϯλϥΫςΟϒͳදݱΛ͢Δ߹ɺ SVG as JSXඇৗʹ͍উख͕Α͍ 23
!͓·͚! • Ӆ͠ίϚϯυೖΕͨͷͰ୳ͯ͠Έ͍ͯͩ͘͞ 24