GoとTOML

Transcript

1. GoͱTOML
   Tatsuhiko Kubo@cubicdaiya
   Gunosy.go#12@2015/04/13
   

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2. ࣗݾ঺հ
   • ٱอୡ඙(Tatsuhiko Kubo)
   • bokko@cubicdaiya
   • Software Engineer in Infrastructure Engineering
   • Mercari, Inc.
   

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3. OSS࡞ͬͨΓίϯτϦϏϡʔτͨ͠Γ
   

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4. Agenda
   GoͰϓϩάϥϜΛॻ͘ࡍͷઃఆϑΝΠϧʹ͍ͭͯ
   

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5. Έͳ͞ΜɺઃఆϑΝΠϧʹ͸
   ීஈԿΛ࢖ͬͯ·͔͢ʁ
   

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6. JSON΍YAMLʹINIɺ
   ࠷ۙͩͱTOML
   ͳΜ͔΋͋Γ·͢ΑͶ
   

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7. ࠓճ͸๻͕ීஈGoͰ։ൃ͢Δࡍʹ
   ར༻͢ΔઃఆϑΝΠϧܗࣜͷTOMLʹ
   ͍࣮ͭͯྫΛ౿·͑ͳ͕Βղઆ͠·͢
   

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8. ͦ΋ͦ΋ઃఆϑΝΠϧ͕ඞཁͳཧ༝
   • ͨ͘͞ΜͷίϚϯυϥΠϯҾ਺
   • ϓϩάϥϜͷύϥϝʔλ੍ޚ
   • ϓϩάϥϜ಺෦ͷৄࡉ͕Θ͔Βͳ͍ਓͰ΋ϓ
   ϩάϥϜͷมߋΛՄೳʹ͍ͨ͠
   

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9. ઃఆهड़ݴޠ(ͱͯ͠࢖͑ͦ͏ͳ΋ͷ)
   • XML
   • INI
   • JSON
   • YAML
   • TOML
   • ܰྔݴޠ(Lua, mruby, etc…)
   

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10. ݸਓతʹ΋͏͍͍΍ͱࢥͬͯΔ΍ͭ
    • XML
    • ਓ͕ؒॻ͘΋ͷ͡Όͳ͍
    • YAML
    • ਓؒʹ͸ॻ͖΍͍͚͢Ͳ࢓༷͕ෳࡶ
    • JSON
    • ίϝϯτ͕ॻ͚ͳ͍
    • 8ਐ਺͕࢖͑ͳ͍(e.g. ύʔϛογϣϯͱ͔)
    • ຤ඌͷΧϯϚফ͠๨ΕͯγϯλοΫεΤϥʔorz
    • σʔλϑΥʔϚοτͱͯ͠͸༏ल͕ͩઃఆϑΝΠϧͱͯ͠͸ͭΒ͍
    

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11. ઃఆهड़ݴޠ(ͱͯ͠࢖͑ͦ͏ͳ΋ͷ)
    • INI
    • TOML
    • ܰྔݴޠ(Lua, mruby, etc…)
    

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12. ઃఆهड़ݴޠ(ͱͯ͠࢖͑ͦ͏ͳ΋ͷ)
    • INI
    • TOML
    • ܰྔݴޠ(Lua, mruby, etc…)
    ࠓճ͸͕࣌ؒͳ͍ͷͰল͖·͢
    

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13. TOML
    • ͋ΔҙຯAdvanced-INI
    • ਓ͕ؒಡΈॻ͖͠΍͍͢
    • ഑ྻɺ֊૚ߏ଄͕ѻ͑Δ
    • ࠷ۙࣗ෼͕GoͰ։ൃ͢Δ࣌͸΄΅͜Ε
    

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14. TOMLͷGo࣮૷
    • ͍Ζ͍Ζ͋Δ͚ͲˣΛ࢖ͬͯ·͢
    • github.com/BurntSushi/toml
    • ઃఆϑΝΠϧͷ஋Λͦͷ··ߏ଄ମʹϚοϐϯάՄೳ
    • encoding/jsonͷMarshalͱUnMarshalΈ͍ͨͳײ͡
    • TOMLͷઃఆࣗମΛੜ੒͢Δ͜ͱ΋Մೳ
    

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15. TOML in Go
    cachectlͷ৔߹
    

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16. cachectl
    • GoͰॻ͔ΕͨOSͷϖʔδΩϟογϡ֬ೝɾ࡟আπʔϧ
    • https://github.com/cubicdaiya/cachectl
    • ແବͳϖʔδΩϟογϡΛղ์͢Δͷʹར༻
    • cachectld͍ͬͯ͏σʔϞϯ͕෇͍ͯΔ
    • ͜ͷσʔϞϯͷઃఆϑΝΠϧ͕TOML
    

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17. cachectld.toml
    

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18. slackboard
    • GoͰॻ͔ΕͨSlackϓϩΩγ
    • https://github.com/cubicdaiya/slackboard
    • ͜ΕͷઃఆϑΝΠϧ΋TOML
    

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19. slackboard.toml
    [core]
    port = "29800"
    slack_url = "https://hooks.slack.com/services/..."
    [[tags]]
    tag = "general"
    channel = "#general"
    [[tags]]
    tag = "random"
    channel = "#random"
    username = "slackboard"
    icon_emoji = ":clipboard:"
    parse = "full"
    [log]
    access_log = "stdout"
    error_log = "stderr"
    level = "error"
    [ui]
    root = "/var/www/slackboard"
    

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20. TOMLઃఆ༻ͷߏ଄ମఆٛ(cachectld.toml)
    type ConfToml struct {
    Targets []SectionTarget `toml:"targets"`
    }
    type SectionTarget struct {
    Path string `toml:"path"`
    PurgeInterval uint64 `toml:"purge_interval"`
    Filter string `toml:"filter"`
    Rate float64 `toml:"rate"`
    }
    encoding/jsonϥΠΫͳΞϊςʔγϣϯ
    

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21. TOMLઃఆ༻ͷߏ଄ମఆٛ(slackboard.toml)
    type ConfToml struct {
    Core SectionCore `toml:"core"`
    Tags []SectionTag `toml:"tags"`
    Log SectionLog `toml:"log"`
    UI SectionUI `toml:"ui"`
    }
    type SectionCore struct {
    Port string `toml:"port"`
    SlackURL string `toml:"slack_url"`
    }
    type SectionTag struct {
    Tag string `toml:"tag"`
    Channel string `toml:"channel"`
    Username string `toml:"username"`
    IconEmoji string `toml:"icon_emoji"`
    Parse string `toml:"parse"`
    }
    type SectionLog struct {
    AccessLog string `toml:"access_log"`
    ErrorLog string `toml:"error_log"`
    Level string `toml:"level"`
    }
    type SectionUI struct {
    Root string `toml:"root"`
    }
    

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22. TOMLϑΝΠϧͷϩʔυ
    func LoadConf(confPath string, confToml *ConfToml) error {
    _, err := toml.DecodeFile(confPath, confToml)
    if err != nil {
    return err
    }
    return nil
    }
    ؆୯Ͱ͢Ͷ
    

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23. TOMLઃఆͷΤΫεϙʔτ
    var b bytes.Buffer
    // ݱࡏͷTOMLͷઃఆΛόοϑΝʹॻ͖ग़͢
    e := toml.NewEncoder(&b)
    err := e.Encode(confToml)
    if err != nil {
    log.Fatal(err.Error())
    }
    // ઃఆϑΝΠϧͷ಺༰Λग़ྗ
    fmt.Println(b.String())
    

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24. ·ͱΊ
    • TOML͍͍ΑTOML
    • GoͳΒˣ͕͓͢͢Ί
    • github.com/BurntSushi/toml
    • P.S.
    • ঺հ͢Δ࣌ؒͳ͔͚ͬͨͲgopher-luaͱ͔ྑͦ͞͏
    

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