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Goでテンプレートからファイルを自動生成するCLIを作る
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KazukiHayase
May 24, 2023
Technology
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Goでテンプレートからファイルを自動生成するCLIを作る
KazukiHayase
May 24, 2023
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Transcript
GoͰςϯϓϨʔτ͔ΒϑΝΠϧΛࣗಈੜ͢ΔCLIΛ࡞Δ ʲZOZO x ϕʔεϚΩφ x όΠηϧʳGoษڧձ #1ʲϋΠϒϦου։࠵ʳ 2023.05.24
ࣗݾհ ໊લɿૣً ܦྺɿBuySell Technologiesʹ2021ʹ৽ଔೖࣾ ॴଐɿ։ൃ2෦ ग़ཧSaaSνʔϜ ৬ɿϑϧελοΫΤϯδχΞɺϓϩδΣΫτϦʔμʔ झຯɿ։ൃɺϚϯΨɺΞχϝɺϕʔεɺόεέ Twitterɿ@KazukiHayase
ΞδΣϯμ CLIΛ࡞ͨ͠എܠ 01 ࡞ͨ͠CLIͷհ 02 ·ͱΊ 03
01 CLIΛ࡞ͨ͠എܠ
CLIΛ࡞ͨ͠എܠ • ݩʑੜ࢈ੑΛ্ͤ͞ΔCLIΛ࡞ΔจԽ͕νʔϜʹ͋ͬͨ • ϓϩμΫτͷಛੑ্ɺಉ͡Α͏ͳ࣮͕ෳՕॴଘࡏ͢Δ ◦ ※େಉ͕ͩ͡ɺڞ௨Խ͍͠
CLIΛ࡞ͨ͠എܠ ग़ཧSaaSෳͷECαΠτಉ࣌ग़Λߦ͏ ECαΠτ1 ECαΠτ2 ECαΠτ3
CLIΛ࡞ͨ͠എܠ ECαΠτ͝ͱʹAPI͕ҟͳΔ ECαΠτ1 ECαΠτ2 ECαΠτ3 json xml
CLIΛ࡞ͨ͠എܠ • ECαΠτ͝ͱʹAPI͕ҟͳΔͷͰڞ௨ԽͰ͖ͳ͍ • มߋ͞ΕΔഎܠ͕ҟͳΔͷͰɺաͳநԽආ͚͍ͨ • ͨͩ͠ɺॲཧͷେͲͷECαΠτେମಉ͡ ςϯϓϨʔτ͔ΒϑΝΠϧΛੜͯ͠ ࣮ΛޮԽ͍ͨ͠ʂʂ
02 ࡞ͨ͠CLIͷհ
࣮ߦίϚϯυ ରܗࣜͰೖྗ
ςϯϓϨʔτϑΝΠϧͱੜϑΝΠϧ ೖྗͨ͠ύοέʔδ໊ͱ໊ؔͰ ஔ͞ΕΔ ςϯϓϨʔτϑΝΠϧ ੜϑΝΠϧ
࣮
༻ͨ͠ϥΠϒϥϦ • cobra ◦ CLIΛ؆୯ʹ࡞Ͱ͖ΔϥΠϒϥϦ ◦ KubernetesGitHub CLIͰ༻͞Ε͍ͯΔ • text/template
◦ ςϯϓϨʔτΛݩʹจࣈྻΛੜ͢Δඪ४ϥΠϒϥϦ ◦ ؔมɺforifͳͲͷ੍ޚߏจςϯϓϨʔτʹຒΊࠐΊΔ
େͷ࡞ cobra-cliΛར༻ͯ͠ ϘΠϥʔςϯϓϨʔτΛ࡞ cmdύοέʔδʹCLIͷॲཧΛ ࣮͍ͯ͘͠
ίϚϯυͷՃ cobra.CommandߏମΛఆٛ rootCmdʹՃ͢Δ͜ͱͰ CLI͔Β࣮ߦͰ͖ΔΑ͏ʹͳΔ
ඪ४ೖྗͷऔಘ fmt.ScanlnͰඪ४ೖྗΛऔಘ ඪ४ೖྗΛݩʹςϯϓϨʔτʹ ͢σʔλΛmapͰఆٛ
ೖग़ྗϑΝΠϧͷఆٛ ςϯϓϨʔτϑΝΠϧͱग़ྗઌͷ ϑΝΠϧΛmapͰఆٛ ֤ೖग़ྗʹରͯ͠ϧʔϓͰॲཧ
ϑΝΠϧͷಡΈࠐΈͱੜ ςϯϓϨʔτΛಡΈࠐΈɺ ग़ྗઌͷϑΝΠϧΛੜ
ςϯϓϨʔτͷஔ ಡΈࠐΜͩςϯϓϨʔτʹରͯ͠ ඪ४ೖྗͰड͚औͬͨσʔλΛ ༻ͯ͠ஔॲཧΛ࣮ߦ
ςϯϓϨʔτϑΝΠϧͷྫ
03 ·ͱΊ
·ͱΊ • cobraͱtext/templateͰ؆୯ʹࣗಈੜCLIΛ࡞Εͨ ◦ ੍ޚߏจར༻Ͱ͖ΔͷͰɺςϯϓϨʔτॊೈʹఆٛՄೳ • CLIΛ࡞ͨ͜͠ͱͰ࣮ΛޮԽ͢Δ͜ͱ͕Ͱ͖ͨ • σΟϨΫτϦߏͳͲͷϧʔϧͷڧ੍ʹ׆༻Ͱ͖Δ ◦
ϧʔϧʹैͬͨςϯϓϨʔτΛఆٛ͢Δ͜ͱͰɺ ࣗવͱϧʔϧʹै࣮ͬͨʹͳΔΑ͏ʹΈԽͰ͖Δ
THANK YOU