昔の自分に教えたいLambdaのデバッグ方法

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ੲͷࣗ෼ʹڭ͍͑ͨ Lambdaͷσόοάํ๏ @tmk2154 ࠤ౻ ஐथ

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• ๭SIerʹ຿ΊΔSE  →αʔόϨεΤϯδχΞʹస৬༧ఆ • AWS͕޷͖Ͱษڧத  ˠAmazon Connectͷຊॻ͍ͨ  ɹࠓ౓ٕज़ॻయͰFaaSͷຊॻ͖·͢ • ࠷ۙͷڵຯ  AWSɿLambdaɺSAM  TypescriptɺVue • ޷͖ͳອը  νΣϯιʔϚϯ @tmk2154 ࣗݾ঺հ

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ࠓ೔࿩͢಺༰ AWS Lambda Amazon API Gateway Amazon DynamoDB AWS Cloud ·ͣίίͷ࿩ AWS Lambda Amazon API Gateway Amazon DynamoDB AWS Cloud ࣍ʹίίͷ࿩

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Lambdaͷ࡞੒ͱςετ • LambdaΛςετ͢Δ৔߹ɺҎԼͷ2ύλʔϯ͕͋Δ • WebίϯιʔϧͰςετ  ϝϦοτɿ؆୯ɺ͙͢ʹ࣮ߦͰ͖Δ  σϝϦοτɿखಈςετɺϩά֬ೝ… • AWS CLI SAMΛ࢖ͬͯϩʔΧϧ؀ڥͰςετ  ϝϦοτɿςετ࣮ߦ͕ߴ଎ɺ࠶ݱੑ͕ߴ͍  σϝϦοτɿηοτΞοϓ஌ࣝ͸ඞཁ

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Lambdaͷ࡞੒ͱςετ SAM CLI Πϯετʔϧࢀরɿhttps://docs.aws.amazon.com/serverless-application-model/latest/developerguide/serverless-sam-cli-install.html • LambdaΛςετ͢Δ৔߹ɺҎԼͷ2ύλʔϯ͕͋Δ • WebίϯιʔϧͰςετ  ϝϦοτɿ؆୯ɺ͙͢ʹ࣮ߦͰ͖Δ  σϝϦοτɿखಈςετɺϩά֬ೝ… • AWS CLI SAMΛ࢖ͬͯϩʔΧϧ؀ڥͰςετ  ϝϦοτɿςετ࣮ߦ͕ߴ଎ɺ࠶ݱੑ͕ߴ͍  σϝϦοτɿηοτΞοϓ஌ࣝ͸ඞཁ

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Lambda࡞੒(ίϯιʔϧ) • Webίϯιʔϧ͔Βͷ࣮ߦ print(e)

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Πϕϯτ࡞੒(ίϯιʔϧ)

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ςετ࣮ߦ(ίϯιʔϧ)

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SAM(ServerlessApplicationModel)ͱ͸ •ར఺ ✦୯ҰͷσϓϩΠઃఆ ✦ϩʔΧϧͰͷςετٴͼσόοά ✦૊ΈࠐΈͷϕετϓϥΫςΟε ✦։ൃπʔϧͱͷ౷߹ ✦AWS CloudFormation •αʔόʔϨεΞϓϦέʔγϣϯ  ߏங༻ͷΦʔϓϯιʔεϑϨʔϜϫʔΫ  YAML΍JSONͰؔ਺ɺAPIɺDBɺΠϕ ϯτιʔεϚοϐϯάΛදݱͰ͖·͢

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Lambda࡞੒(SAM) ίϚϯυɿ sam init [OPTIONS] (αʔόϨεΞϓϦͷ਽ܗ࡞੒)  $ sam init -r python3.7

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Lambda࡞੒(SAM) -BNCEB ࣮ߦϑΝΠϧ ΞϓϦ ߏ੒ϑΝΠϧ

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Lambda࡞੒(SAMͷߏ੒)

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Πϕϯτ࡞੒(SAM) ίϚϯυɿ sam local generate-event [OPTIONS] COMMAND [ARGS]…  (Lambdaʹ౉͢JSONΠϕϯτͷ࡞੒)  $ sam local generate-event apigateway —-help $ sam local generate-event apigateway aws-proxy +40/Πϕϯτ

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ίϚϯυɿ sam local invoke [OPTIONS] [FUNCTION_IDENTIFIER]  (ϩʔΧϧ؀ڥͰDockerΛ࢖༻ͯ͠LambdaΛ࣮ߦ)  $ sam local invoke HelloWorldFunction -e events/apigateway-proxy-event.json   ࣮ߦ݁Ռ ςετ࣮ߦ(SAM)

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• ΤϯυϙΠϯτ(httpϦΫΤετઌ)͚ͩΛࠩ͠ସ͑ͯࢼݧ͢Δ E2Eςετ AWS Lambda Amazon API Gateway Amazon DynamoDB AWS Cloud ຊ൪ ϩʔΧϧ AWS Lambda SAM (start-api) + DynamoDB local 'BLF "1* (BUFXBZ AWS Lambda Local Stack ϩʔΧϧ 'BLF "1* (BUFXBZ 'BLF %ZOBNP %# 'BLF %ZOBNP %#

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Local Stack • ϩʔΧϧͰ࢖͑ΔAWSαʔϏεͷϑΣΠΫαʔό(ඇެࣜ) ࢀߟɿhttps://github.com/localstack/localstack

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Local Stack(ྫ:DynamoDB) • docker-compose.yml

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͞Βʹ஌ࣝΛਂΊΔʹ͸ • LambdaςετઃܭͷόΠϒϧ  ʮTestable Lambda: Working Effectively with Legacy Lambdaʯ  https://speakerdeck.com/twada/testable-lambda-working-effectively-with-legacy-lambda • Lambda಺෦ͷςετઃܭ΍E2EςετΛߦ͏ͱ͖ͷઓུͳͲ  ʮTypeScriptͱJestͰ͸͡ΊΔ AWS੡αʔόʔϨε REST API ͷ  Ϣχοτςετ/E2Eςετʯ  https://speakerdeck.com/wadayusuke/serverless-testing-using-typescript-and-jest • ผͷπʔϧΛ࢖͏  AWS Toolkit for VSCode ͷ Lambdaσόοά  AWS CDKͰσϓϩΠߏ੒ͷ؅ཧ

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͓·͚ • SAMΛಈ͔࣌͢ʹ٧·Δ͔΋͠Εͳ͍ύλʔϯ(2019/12/16ݱࡏ)Λهࡌ 1. Cloud 9಺ͰSAMΛࢼ͢৔߹  ˠSAMͷversion͕͔ͳΓݹ͍(Cloud9಺:0.8.0ɺ࠷৽:0.37.0)ͷͰ  ɹҰ౓SAMΛΞοϓσʔτͨ͠ํ͕ྑ͍  ɹ(LambdaͷιʔεΛߋ৽ͯ͠΋Dockerʹ൓ө͞Εͳ͍ͳͲ…) 2. ࠷৽൛ͷpipͩͱAWS Toolkit for VSCode͔ΒϩʔΧϧ࣮ߦͰ͖ͳ͍  ˠpipͷversionΛ໭͢ඞཁ͕͋Δ  https://qiita.com/tmk2154/items/3fd7753b1b416e16f327 

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·ͱΊ SAM࢖ͬͯ։ൃ͠Α͏ʂ