AWS Serverless Express 入門

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2018/08/03 ؔ੢NodeֶԂ 3࣌ݶ໨ AWS Serverless Eλpress ೖ໳ AWS Lambda Λ࢖ͬͯ Express Λ ҰॠͰެ։͢Δํ๏

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AWS Serverless Express ஌ͬͯ·͔͢ʁ

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JavaScript / Java / React / AWS / Vim ͸͡Ί·ͯ͠! Taiki Nishi @nkgrnkgr Nokogiri Blog nkgrnkgr.github.io WebΞϓϦέʔγϣϯΤϯδχΞ ๏ਓ޲͚άϧʔϓ΢ΣΞαʔϏεͷ։ൃ HN: Nokogiri(nkgrnkgr) Ұࣇͷ෕ʢࠓ݄ೋࣇͷ෕ʹͳΓ·͢ ʣ Speaker Deck

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Express࢖ͬͨ͜ͱ͋Γ·͔͢ʁ

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AWS Lambda࢖ͬͨ͜ͱ͋Γ·͔͢ʁ

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ExpressΛ࢖͍ͬͯΔਓ͕ AWS LambdaΛ࢖ͬͯ ޾ͤʹͳΕΔ࿩Ͱ͢ ☺

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What is Serverless ? ͦ΋ͦ΋Serverlessͱ͸ʁ 1

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αʔόʔϨείϯϐϡʔςΟϯάͱ͸ɺΫϥ΢υϓϩό Πμʔ͕ΞϓϦέʔγϣϯʹඞཁͳϚγϯϦιʔεͷׂ Γ౰ͯΛಈతʹ؅ཧ͠ɺࣄલʹߪೖ͞Εͨ͜ͱʹجͮ͘ ੥ٻͰ͸ͳ͘ɺ֤ΞϓϦέʔγϣϯཁٻΛຬͨͨ͢Ίʹ ࢖༻͞ΕΔݸʑͷϦιʔεྔʹج͍ͮͨ੥ٻΛߦ͏Α͏ ͳΫϥ΢υίϯϐϡʔςΟϯάϞσϧɻ “ Wikipedia ΑΓ

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CLOUD FUNCTIONS AWS Lambda Azure functions ओͳ Serverless Platform

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CLOUD FUNCTIONS AWS Lambda Azure functions ओͳ Serverless Platform Today’s Topic

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AWS Lambda ͷಛ௃ ։ൃऀ͕࣮ߦ؀ڥͷαʔόʔΛ४උͤͣίʔυΛσϓϩΠ͢Δ͚ͩ HTTP ϦΫΤετͳͲ༷ʑͳΠϕϯτΛτϦΨʔʹؔ਺Λ࣮ߦ͢Δ Φʔτεέʔϧ ॳճىಈʹ΍΍͕͔͔࣌ؒΔ σϓϩΠͰ͖ΔϑΝΠϧαΠζ͕ 50MB ·Ͱ 1ϦΫΤετ͋ͨΓͷ࠷େ࣮ߦ͕࣌ؒ 300ඵ ࢖͍Ͳ͜ΖΛબͿ͕ͱʹ͔͍҆͘ 1ϲ݄ 100M ϦΫΤετ·Ͱແྉ Ҏ߱ 100M ϦΫΤετຖʹ 0.2 US$

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What is AWS Serverless Express ? AWS Serverless Express ͱ͸ʁ 2

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AWS Serverless Express AWS LambdaͱAPI Gatewayͷ্ʹɺExpress࢖༻ͯ͠αʔόʔϨε ΞϓϦέʔγϣϯͱREST APIΛ࣮ߦ͢ΔAWSެࣜϥΠϒϥϦ ExpressͷMiddleware ʹ௥Ճ͢Δ͚ͩͰ LambdaͰ࣮ߦՄೳʹͳΔ https://github.com/awslabs/aws-serverless-express

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How to use 3

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Express ʹ aws-serverless-express ΛΠϯετʔϧ STEP1 STEP2 STEP3 STEP4 ❯ npm install aws-serverless-express + aws-serverless-express@3.2.0 updated 1 package and audited 198 packages in 2.889s found 2 low severity vulnerabilities run `npm audit fix` to fix them, or `npm audit` for details

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const awsServerlessExpress = require('aws-serverless-express'); const app = require('./app'); const server = awsServerlessExpress.createServer(app); exports.handler = (event, context) => awsServerlessExpress.proxy(server, event, context); Lambda ͔Βݺͼग़͞ΕΔ handler Λ࡞੒ STEP1 STEP2 STEP3 STEP4 index.js

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ࠓ౓͸ Express ͷ middleware ʹ ͜ͷϥΠϒϥϦΛ௥Ճ STEP1 STEP2 STEP3 STEP4 const serverlessExpress = require('aws-serverless-express/middleware'); var app = express(); app.use(serverlessExpress.eventContext()); app.js

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Lambda ΁ͷσϓϩΠ͸ Serverless Flamework Λར༻ STEP1 STEP2 STEP3 STEP4 $ npm install serverless -g + serverless@1.29.2 updated 3 packages in 11.062s https://serverless.com/framework/

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σϓϩΠ༻ʹ ઃఆϑΝΠϧΛ࡞੒ STEP1 STEP2 STEP3 STEP4 service: serverless-express-example provider: name: aws runtime: nodejs8.10 stage: dev region: ap-northeast-1 functions: app: handler: index.handler events: - http: ANY / - http: 'ANY {proxy+}' serverless.yml

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❯ sls deploy Serverless: Packaging service... Serverless: Excluding development dependencies... Serverless: Uploading CloudFormation file to S3... Serverless: Uploading artifacts... Serverless: Uploading service .zip file to S3 (2.16 MB)... Serverless: Validating template... Serverless: Updating Stack... Serverless: Checking Stack update progress... .............. Serverless: Stack update finished... Service Information service: serverless-express-example stage: dev region: ap-northeast-1 stack: serverless-express-example-dev api keys: None endpoints: ANY - https://u8klxp40gc.execute-api.ap-northeast-1.amazonaws.com/dev ANY - https://u8klxp40gc.execute-api.ap-northeast-1.amazonaws.com/dev/{proxy+} functions: app: serverless-express-example-dev-app APIGawayͷEndPointsͷ࡞੒͔ΒίʔυͷσϓϩΠ·Ͱશ෦΍ͬͯ͘ΕΔ STEP1 STEP2 STEP3 STEP4