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スクリーンショット撮影のために Puppeteer を操る / Kyoto.js 16
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Susisu
April 27, 2019
Programming
0
750
スクリーンショット撮影のために Puppeteer を操る / Kyoto.js 16
https://kyotojs.connpass.com/event/124671/
Susisu
April 27, 2019
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Transcript
ε Ϋ Ϧ ʔϯ γ ϣ ο τ ࡱ Ө
ͷ ͨ Ί ʹ P u p p e t e e r Λ ૢ Δ 2 0 1 9 - 0 4 - 2 7 K y o t o . j s 1 6 i d : s u s i s u
Θ ͨ ͠Ͱ ͢ - id:susisu - GitHub: susisu -
ͯͳ ΞϓϦέʔγϣϯΤϯδχΞ - Mackerel
લ ճ ͷ ͋ Β͢ ͡ - Web ΞϓϦέʔγϣϯͷϔϧϓυΩϡϝϯτ -
εΫϦʔϯγϣοτࡱӨ - ͭΒ͍
ε Ϋ γ ϣ ࡱ Ө ͷ ྲྀ Ε Λ
͓ ͞ Β ͍ ͯ͠ Έ · ͠ ΐ ͏
ϖʔ δ Λ ։ ͘ ը ໘ Λ ฤ ू
͢ Δ ε Ϋ γ ϣ ࡱ Δ ը ૾ Λ Ճ ͢ Δ - ϩ άΠ ϯ - త ͷ ϖʔ δ ʹ Ҡ ಈ - ς Ωε τ ͳ Ͳ Λ ೖ ྗ - ։ ൃ ऀ π ʔϧ ͔ Β ཁ ૉ Λ ฤ ू - τ Ϧ ϛ ϯ ά - ը ૾ Λ อ ଘ ɾ ϑ Ν Πϧ Ҡ ಈ - ը ૾ ͱ ͯ͠ͷ ฤ ू ɾ ߹ - ݟ ͑ͯ ͍ ͚ ͳ ͍ ͷ Λ Ӆ ͢
ϖʔ δ Λ ։ ͘ ը ໘ Λ ฤ ू
͢ Δ ε Ϋ γ ϣ ࡱ Δ ը ૾ Λ Ճ ͢ Δ - ϩ άΠ ϯ - త ͷ ϖʔ δ ʹ Ҡ ಈ - ς Ωε τ ͳ Ͳ Λ ೖ ྗ - ։ ൃ ऀ π ʔϧ ͔ Β ཁ ૉ Λ ฤ ू - τ Ϧ ϛ ϯ ά - ը ૾ Λ อ ଘ ɾ ϑ Ν Πϧ Ҡ ಈ - ը ૾ ͱ ͯ͠ͷ ฤ ू ɾ ߹ - ݟ ͑ͯ ͍ ͚ ͳ ͍ ͷ Λ Ӆ ͢
ϖʔ δ Λ ։ ͘ ը ໘ Λ ฤ ू
͢ Δ ε Ϋ γ ϣ ࡱ Δ ը ૾ Λ Ճ ͢ Δ - ϩ άΠ ϯ - త ͷ ϖʔ δ ʹ Ҡ ಈ - ς Ωε τ ͳ Ͳ Λ ೖ ྗ - ։ ൃ ऀ π ʔϧ ͔ Β ཁ ૉ Λ ฤ ू - τ Ϧ ϛ ϯ ά - ը ૾ Λ อ ଘ ɾ ϑ Ν Πϧ Ҡ ಈ - ը ૾ ͱ ͯ͠ͷ ฤ ू ɾ ߹ - ݟ ͑ͯ ͍ ͚ ͳ ͍ ͷ Λ Ӆ ͢
ϖʔ δ Λ ։ ͘ ը ໘ Λ ฤ ू
͢ Δ ε Ϋ γ ϣ ࡱ Δ ը ૾ Λ Ճ ͢ Δ - ϩ άΠ ϯ - త ͷ ϖʔ δ ʹ Ҡ ಈ - ς Ωε τ ͳ Ͳ Λ ೖ ྗ - ։ ൃ ऀ π ʔϧ ͔ Β ཁ ૉ Λ ฤ ू - τ Ϧ ϛ ϯ ά - ը ૾ Λ อ ଘ ɾ ϑ Ν Πϧ Ҡ ಈ - ը ૾ ͱ ͯ͠ͷ ฤ ू ɾ ߹ - ݟ ͑ͯ ͍ ͚ ͳ ͍ ͷ Λ Ӆ ͢
ϖʔ δ Λ ։ ͘ ը ໘ Λ ฤ ू
͢ Δ ε Ϋ γ ϣ ࡱ Δ ը ૾ Λ Ճ ͢ Δ - ϩ άΠ ϯ - త ͷ ϖʔ δ ʹ Ҡ ಈ - ς Ωε τ ͳ Ͳ Λ ೖ ྗ - ։ ൃ ऀ π ʔϧ ͔ Β ཁ ૉ Λ ฤ ू - τ Ϧ ϛ ϯ ά - ը ૾ Λ อ ଘ ɾ ϑ Ν Πϧ Ҡ ಈ - ը ૾ ͱ ͯ͠ͷ ฤ ू ɾ ߹ - ݟ ͑ͯ ͍ ͚ ͳ ͍ ͷ Λ Ӆ ͢
ϖʔ δ Λ ։ ͘ ը ໘ Λ ฤ ू
͢ Δ ε Ϋ γ ϣ ࡱ Δ ը ૾ Λ Ճ ͢ Δ - ϩ άΠ ϯ - త ͷ ϖʔ δ ʹ Ҡ ಈ - ς Ωε τ ͳ Ͳ Λ ೖ ྗ - ։ ൃ ऀ π ʔϧ ͔ Β ཁ ૉ Λ ฤ ू - τ Ϧ ϛ ϯ ά - ը ૾ Λ อ ଘ ɾ ϑ Ν Πϧ Ҡ ಈ - ը ૾ ͱ ͯ͠ͷ ฤ ू ɾ ߹ - ݟ ͑ͯ ͍ ͚ ͳ ͍ ͷ Λ Ӆ ͢
ϖʔ δ Λ ։ ͘ ը ໘ Λ ฤ ू
͢ Δ ε Ϋ γ ϣ ࡱ Δ ը ૾ Λ Ճ ͢ Δ × N - ଟ ݴ ޠ ର Ԡ - ߋ ৽ ͢ Δ ͨ ͼ
Կ ͔ - ࡞ۀ༰͕୯७ - ͕͔͔࣌ؒΔ
- ࠶࣮ߦͰ͖ͳ͍
Կ ͔ - ࡞ۀ༰͕୯७ - ͕͔͔࣌ؒΔ
- ࠶࣮ߦͰ͖ͳ͍ ػ ց ʹ ͤ ͨ ͍
P u p p e t e e r
ୈ Ұ ෦ ɹ
P u p p e t e e r
P u p p e t e e r -
https://github.com/GoogleChrome/puppeteer - Chromium Λ Node.js ͔Βૢ࡞͢ΔΠϯλʔϑΣʔε - ཁૉͷฤूεΫϦʔϯγϣοτͷࡱӨͳͲߦ͑Δ
ϖʔ δ Λ ։ ͘ ը ໘ Λ ฤ ू
͢ Δ ε Ϋ γ ϣ ࡱ Δ - ϩ άΠ ϯ - త ͷ ϖʔ δ ʹ Ҡ ಈ - ς Ωε τ ͳ Ͳ Λ ೖ ྗ - ։ ൃ ऀ π ʔϧ ͔ Β ཁ ૉ Λ ฤ ू - τ Ϧ ϛ ϯ ά - ը ૾ Λ อ ଘ ɾ ϑ Ν Πϧ Ҡ ಈ ͜ ͜ · Ͱ Λ ࣗ ಈ Խ Ͱ ͖ Δ A P I Λ ఏ ڙ
ϖʔ δ Λ ։ ͘ ը ໘ Λ ฤ ू
͢ Δ ε Ϋ γ ϣ ࡱ Δ ը ૾ Λ Ճ ͢ Δ - ը ໘ ฤ ू ͷ ஈ ֊ Ͱ ؤ ு Δ - ͦ ͦ ඞ ཁ ͳ ͍ ͜ ͱ ଟ ͍
ϖʔ δ Λ ։ ͘ ը ໘ Λ ฤ ू
͢ Δ ε Ϋ γ ϣ ࡱ Δ - ϩ άΠ ϯ - త ͷ ϖʔ δ ʹ Ҡ ಈ - ς Ωε τ ͳ Ͳ Λ ೖ ྗ - ։ ൃ ऀ π ʔϧ ͔ Β ཁ ૉ Λ ฤ ू - τ Ϧ ϛ ϯ ά - ը ૾ Λ อ ଘ ɾ ϑ Ν Πϧ Ҡ ಈ ͬͯ ͍ ͖ · ͠ ΐ ͏
ϖʔ δ Λ ։ ͘ ը ໘ Λ ฤ ू
͢ Δ ε Ϋ γ ϣ ࡱ Δ - ϩ άΠ ϯ - త ͷ ϖʔ δ ʹ Ҡ ಈ - ς Ωε τ ͳ Ͳ Λ ೖ ྗ - ։ ൃ ऀ π ʔϧ ͔ Β ཁ ૉ Λ ฤ ू - τ Ϧ ϛ ϯ ά - ը ૾ Λ อ ଘ ɾ ϑ Ν Πϧ Ҡ ಈ ຊ ʹ ʁ
ϑ Ϩ ʔϜϫ ʔ Ϋ ͷ ඞ ཁ ੑ -
Puppeteer ͋͘·ͰϨϕϧͷ API - ߴϨϕϧͷϧʔϧଐ͠ͳ͍ - ෳ͋ΔεΫϦϓτΛͲ͏࣮ߦ͢Δ͔ - Ͳ͜ʹը૾Λอଘ͢Δ͔ - ͳΜΒ͔ͷΈ͕ͳ͍ͱѻ͍ͮΒ͍
@ s u s i s u / a rc
h e r f i s h
ୈ ೋ ෦ ɹ
@ s u s i s u / a rc
h e r f i s h
@ s u s i s u / a rc
h e r f i s h - Puppeteer ΛͬͨεΫγϣࡱӨͷͨΊͷϑϨʔϜϫʔΫ / CLI Λ࡞Γ·ͨ͠ - https://github.com/susisu/archerfish
ϓ ϩ ϑ Ν Πϧ ϓ ϩ ϑ Ν Πϧ
= ͻ ͱ ͭ ͷ ઃ ఆ
λ ε Ϋ ϓ ϩ ϑ Ν Πϧ ϓ ϩ
ϑ Ν Πϧ ʹ ෳ ͷ λ ε Ϋ ʢ ε Ϋ Ϧ ϓ τ ʣ ͕ ඥ ͮ ͘
module.exports = async ({ browser, screenshot }) => { const
page = await browser.newPage(); await page.setViewport({ width : 1280, height : 720, deviceScaleFactor: 2, }); await page.goto("https://mackerel.io"); await screenshot(page, "page"); await page.close(); }; λ ε Ϋ ͷ ྫ
λ ε Ϋ ε Ϋ γ ϣ ϓ ϩ ϑ
Ν Πϧ λ ε Ϋ Λ ࣮ ߦ ͢ Δ ͱ ε Ϋ γ ϣ ͕ ࡞ ͞ Ε Δ
λ ε Ϋ ε Ϋ γ ϣ ϓ ϩ ϑ
Ν Πϧ ࡞ ͞ Ε ͨ ε Ϋ γ ϣ ϓ ϩ ϑ Ν Πϧ ͝ ͱ ʹ ू
ϓ ϩ ϑ Ν Πϧ b e f o re
A l l a f t e r A l l ϩ άΠ ϯ ɾ ޙ ย ͚ ͳ Ͳ ϓ ϩ ϑ Ν Πϧ ʹ ඥ ͍ ͨ ϑ ο Ϋ ε Ϋ Ϧ ϓ τ Ͱ ߦ ͏
j a e n ϓ ϩ ϑ Ν Πϧ j
a e n ϓ ϩ ϑ Ν Πϧ ઃ ఆ ͷ ҟ ͳ Δ ෳ ͷ α ϒ ϓ ϩ ϑ Ν Πϧ Λ ࣋ ͯ Δ λ ε Ϋ ͷ Έ Λ ڞ ༗
j a e n ϓ ϩ ϑ Ν Πϧ j
a e n ࡞ ͞ Ε ͨ ε Ϋ γ ϣ α ϒ ϓ ϩ ϑ Ν Πϧ ͝ ͱ ʹ ू
࣮ ࡍ ʹ ͬͯ Έ ͨ - Mackerel ͷυΩϡϝϯτͷը૾ͷҰ෦Λ͜ΕΛͬͯ࡞ ͍ͯ͠·͢ʢ·࣮ͩݧஈ֊ʣ
h t t p s : / / m a c k e re l . i o / j a / d o c s / e n t r y / h o w t o / c re a t e - s e r v i c e s - a n d - ro l e s h t t p s : / / m a c k e re l . i o / d o c s / e n t r y / h o w t o / c re a t e - s e r v i c e s - a n d - ro l e s
· ͱ Ί - Puppeteer ΛͬͯεΫγϣΛࡱΔͨΊͷϑϨʔϜϫʔΫ / CLI Λ࡞Γ·ͨ͠ -
https://github.com/susisu/archerfish - λεΫ࡞͞ΕͨεΫγϣͷҰݩཧ͕Ͱ͖·͢ - ࠷ॳʹϩάΠϯ͢Δɺͱ͍ͬͨ͜ͱͰ͖·͢ - ࣮ڞ௨ͷॲཧΛϥΠϒϥϦԽ͓ͯ͘͜͠ͱͰ͖·͢
՝ ɾ ເ - εΫϦϓτΛ࠷৽ʹอͪଓ͚Δίετ݁ߏߴ͍ - ը૾Λ৴͢Δͷ·ͨผͷ - ࣗಈͰఆظతʹ࣮ߦɾ࠷৽ͷը૾Λ৴͢Δϑϩʔͷߏங