Lambdaを使ってJawsDaysをHackしてみよう!

by toshihirock

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LambdaΛ࢖ͬͯJawsDays ΛHackͯ͠ΈΑ͏! +"84%":4 5PTIJIJSP'VSVOP

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ɾWiFi SSID->jawsdays_workshop ɾWiFi ύεϫʔυ->workshop02 ɾࢿྉ-> https://github.com/toshihirock/ jaws2016-lambda-hands-on

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લఏ ɾॳ৺ऀ޲͚ͷߨशͳͷͰ೉қ౓͸ߴ͋͘Γ ·ͤΜɻ͕࣌ؒ༨ͬͨํ͸վ଄͢ΔͳͲࣗ༝ ʹ༡ΜͰΈ͍ͯͩ͘͞ɻ ɾLambdaͷίʔυ࣮૷αϯϓϧ͸Node.jsͰ ߦ͓ͬͯΓ·͢ɻJava,PythonͰͷαϯϓϧ͸ ͳ͍఺͸ྃ͝ঝ͍ͩ͘͞ɻ

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΍Δ͜ͱɺ΍Βͳ͍͜ͱ ΍Δ͜ͱ ɾϋϯζΦϯܗࣜͰLambdaͰԿ͔Λ࡞ͬͯ ༡ΜͰΈΔ(༡ͼͳͷͰۀ຿޲͚Ͱ͸ͳ͍) ΍Βͳ͍͜ͱ ɾLambdaͷৄࡉͳઆ໌ ɾTwitterAPIͷৄࡉ

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ࣗݾ঺հ ɾݹ໺ढ़޿(@toshihirock) ɾNTTιϑτ΢ΣΞגࣜձࣾ ɾAWSۀ຿͸1೥͙Β͍ ɾ޷͖ - Lambda - Podcast - ϫʔϧυτϦΨʔ

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ຊ೔ͷϋϯζΦϯ

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-BNCEBΛ࢖ͬ ͯKBXTEBZTʹπ Πʔτ͠Α͏

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LambdaΛ࢖ͬͯJawsDaysΛHackͬͧ͢ ɾπΠʔτ͍ͤͨ͞಺༰ͷςΩετΛS3ʹ഑ஔ ɾIAMϩʔϧΛ෇༩ͨ͠LambdaͰS3͔ΒςΩ ετϑΝΠϧΛऔಘ͠ɺϥϯμϜʹϐοΫΞοϓ ɾ༧Ί࡞੒ͯ͋͠ΔAPIGatewayʹ޲͚ͯPOST ϦΫΤετΛ࣮ࢪ ɾAPIGatewayܦ༝Ͱ@jaws2016_lambda͔Β ϋογϡλά #jawsdays Λ෇͚ͯπΠʔτ͞Ε Δ(࡞੒ࡁΈ)

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֓ཁਤ

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஌ࣝฤ

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S3? ɾΦϯϥΠϯετϨʔδ ɾߴ͍ݎ࿚ੑ(99.999999999%) ɾ҆Ձ ɾ༰ྔແ੍ݶ(1ϑΝΠϧ5TB·Ͱ) ࠓճ͸πΠʔτจݴΛஔ͘৔ॴͱͯ͠ར༻

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Lambda? ɾΠϕϯτυϦϒϯ΍ cronͷΑ͏ʹఆظλΠϛϯάͰϢʔβʔ͕ॻ ͍ͨίʔυΛ࣮ߦͰ͖Δ ɾίʔυ͸Node.js,Java,Python ɾ࠷ۙVPC΋ରԠ ɾৄࡉ͸ެࣜࢀর

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IAMϩʔϧ? ɾϢʔβʔ΍LambdaɺEC2ͳͲͷϦιʔεʹର ͯ͠໾ׂ(Role)ΛࢦఆͰ͖Δɻྫ͑͹ʮS3ͷRead ݖݶʯͳͲ ɾϩʔϧ͸Lambda࡞੒࣌ʹ෇༩͢Δ͜ͱͰઃఆ ͞ΕͨAPIͷkick͕Ͱ͖Δ ࠓճͷྫͰ͸Lambda͔ΒS3ͷόέοτͷ৘ใΛ औಘ͍ͨ͠ͷͰLambda޲͚ͷ্هʹ֘౰͢Δ IAMϩʔϧΛ࡞੒͢Δ

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࡞ۀͷྲྀΕ ɾS3όέοτʹπΠʔτจݴͷ഑ஔ ɾLambda༻IAMϩʔϧͷ࡞੒ ɾLambda Functionͷ࡞੒ ɾLambda Functionͷఆظ࣮ߦͷઃఆ

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४උฤ(S3)

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αʔϏεҰཡ͔ΒS3ͷબ୒

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όέοτͷ࡞੒ ʮ$SFBUF#VDLFUʯ Λબ୒ όέο τ໊Λ࡞੒ɻόέοτ ໊͸SFHJPOͰϢχʔΫͳ ඞཁ͋Γ Ϧʔδϣϯ͸ 5PLZP ʮ$SFBUFʯ Λબ୒

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S3΁഑ஔ͢ΔςΩετϑΝΠϧͷ࡞੒ ɾ֤ࣗͷPCͷ޷͖ͳΤσΟλͰπΠʔτͤ͞ ͍ͨจݴूΛ࡞੒͍ͯͩ͘͠͞ɻจࣈίʔυ ͸UTF-8Ͱอଘ ɾ೚ҙͷσϦϛλ۠੾ΓͰ࡞੒͍ͯͩ͘͠͞ɻ ҎԼྫ͸σϦϛλ͸վߦ(\r\n) ɾ࡞੒ޙɺʮtweetList.txtʯͰϩʔΧϧʹอ ଘ

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֬ೝ # จࣈίʔυ֬ೝ $nkf -g tweetList.txt # վߦίʔυ֬ೝ.LF = $.CR = ^MͰදࣔ $cat -e tweetList.txt

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S3΁ςΩετϑΝΠϧͷΞοϓϩʔυ ʮ6QMPBEʯΛ બ୒ ςΩετΛ υϥοάΞϯυυϩο ϓͰΞοϓϩʔυ ʮ4UBSU 6QMPBEʯΛબ୒ ઌ΄Ͳ࡞੒ͨ͠όέοτΛબ୒ޙɺҎԼͷૢ ࡞ͰΞοϓϩʔυ

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֬ೝ

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४උฤ(IAMϩʔϧ)

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αʔϏεҰཡ͔ΒIAMͷબ୒

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ϩʔϧͷ৽ن࡞੒ ʮ3PMFTʯΛબ ୒ ʮ$SFBUF /FX3PMFʯΛબ ୒

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ϩʔϧ໊ͷܾఆ ೚ҙͷ 3PMF/BNFΛೖྗ ʮ/FYU 4UFQʯΛબ୒

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ϩʔϧλΠϓͷબ୒ ʮ"84 -BNCEBʯΛબ୒ LambdaʹΞλον͍ͨ͠ϩʔϧΛ࡞੒͢ΔͷͰLambdaΛ બ୒͠·͢

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ϙϦγʔͷબ୒ ʮTʯͱೖྗ ʮ"NB[PO43F BE0OMZ"DDFTTʯ Λબ୒ ʮ/FYU 4UFQʯΛબ୒ طʹAWSଆͰ༻ҙ͍ͯ͠ΔS3΁ͷReadOnly ͷϙϦγʔΛ෇༩

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ϨϏϡʔ ֬ೝޙɺ ʮ$SFBUF3PMFʯ Λબ୒

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LambdaΛ࡞Ζ͏!

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(ޙͰར༻)ίʔυͷ४උ ɾҎԼͷ಺༰Λίϐϖͯ͠೚ҙͷςΩετΤ σΟλʹష͓ͬͯ͘ ɾhttps://github.com/toshihirock/jaws2016- lambda-hands-on/blob/master/index.js

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(ޙͰར༻)ίʔυͷ४උ 4ͷઃఆ͸ దٓࣗ෼ͷઃఆʹ มߋ "1*(BUFXBZͷ ೝূΩʔΛࢦఆ

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αʔϏεҰཡ͔ΒLambdaͷબ୒

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Functionͷ࡞੒ ※ॳΊͯͷํͷը໘ ʮ$SFBUFB -BNCEBGVODUJPOʯ Λબ୒ ʮ(FU4UBSUFE /PXʯΛબ୒ ※طʹFunction͕͋Δਓͷը໘

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Blueprint ར༻͠ͳ͍ ͷͰʮ4LJQʯΛબ ୒

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Functionͷઃఆ(1/2) /PEFKT /BNFٴͼ %FTDSJQUJPO͸Կ Ͱ΋0, &EJUDPEF JOMJOF ઌ ΄Ͳͷ಺༰Λ ίϐϖ

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Functionͷઃఆ(2/2) ઌ ΄Ͳ࡞੒ͨ͠4΁ ΞΫηεͰ͖Δ3PMF ໊ *OEFYIBO EMFS /P71$ ࠷ޙʹ ʮ/FYUʯ

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ϨϏϡʔ ઃఆ͕໰୊ͳ ͚Ε͹ʮ$SFUF GVODUJPOʯ

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࡞੒ ೔ຊޠ͕จࣈԽ͚͠· ͢ɻɻؾʹͳΔਓ͸ຊϖʔδ Ͱ࠶౓ίϐϖͯ͠ߋ৽͢Δͱ௚ Γ·͢ɻ

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ςετͯ͠ΈΔ ʮ5FTUʯΛબ୒

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ςετͯ͠ΈΔ ʮ4BWFBOE UFTUʯΛબ୒ ςϯϓϨʔτ͸ԿͰ ΋0, πΠʔτ৘ใ͸4͔ Βऔಘ͢ΔͷͰ

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ςετͯ͠ΈΔ ੒ޭ͢Ε͹ը໘Լ෦ ʹπΠʔτͨ͠จࣈྻ͕දࣔ ͞ΕΔ ࣦഊ͢Δͱ੺͍Τϥʔදࣔ ʹͳΔ

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ςετͯ͠ΈΔ 5XJUUFSͰ΋֬ೝ

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Τϥʔ͕ൃੜ͍ͯ͠Δ৔߹ ɾը໘Լ෦(Log output)ʹϩά৘ใ͕දࣔ͞ ΕΔͷͰ֬ೝ ɾඞཁʹԠͯ͡console.logͳͲΛ࢓ࠐΜͰσ όοάͯ͠ΈΔ

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botΒ͘͠ ఆظ࣮ߦͤͯ͞ΈΔ

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ఆظ࣮ߦͷઃఆ ʮ&WFOUTPVSDFTʯλ ϒΛબ୒ ʮ"EEFWFOU TPVSDFʯΛબ୒

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ఆظ࣮ߦͷઃఆ ೚ҙͷ࣌ؒؒ ִΛઃఆ ࠷খ෼ ʮ$MPVE8BUDI&WFOUT 4DIFEVMFʯΛબ୒ ໊শΛదٓมߋ 4VCNJUܾͯ͠ఆ

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֬ೝ 5XJUUFS্Ͱ΋֬ೝ ͠͹͠଴ͬͯ֬ೝ

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͕࣌ؒ༨ͬͨਓ͸

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͕࣌ؒ༨ͬͨਓ͸ ɾ޷͖ʹ৭ʑ΍ͬͯΈ͍ͯͩ͘͞ʂʢఆظ࣮ߦ ִؒΛม͑ΔɺจݴͷύλʔϯΛ૿΍͢ͳͲʣ ɾLambda͔Β௚઀TwitterͷAPIΛୟ͘ͳͲΛ ͯ͠Έ͍ͨ৔߹͸Ҏલॻ͍ͨͪ͜ΒΛࢀߟʹ΍ͬ ͯΈ͍ͯͩ͘͞ http://qiita.com/toshihirock/items/ d28505442526e0ae7793

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Thanks!