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GoͱTOML
Tatsuhiko Kubo@cubicdaiya
Gunosy.go#12@2015/04/13
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ࣗݾհ
• ٱอୡ(Tatsuhiko Kubo)
• bokko@cubicdaiya
• Software Engineer in Infrastructure Engineering
• Mercari, Inc.
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OSS࡞ͬͨΓίϯτϦϏϡʔτͨ͠Γ
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Agenda
GoͰϓϩάϥϜΛॻ͘ࡍͷઃఆϑΝΠϧʹ͍ͭͯ
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Έͳ͞ΜɺઃఆϑΝΠϧʹ
ීஈԿΛͬͯ·͔͢ʁ
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JSONYAMLʹINIɺ
࠷ۙͩͱTOML
ͳΜ͔͋Γ·͢ΑͶ
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ࠓճ͕ීஈGoͰ։ൃ͢Δࡍʹ
ར༻͢ΔઃఆϑΝΠϧܗࣜͷTOMLʹ
͍࣮ͭͯྫΛ౿·͑ͳ͕Βղઆ͠·͢
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ͦͦઃఆϑΝΠϧ͕ඞཁͳཧ༝
• ͨ͘͞ΜͷίϚϯυϥΠϯҾ
• ϓϩάϥϜͷύϥϝʔλ੍ޚ
• ϓϩάϥϜ෦ͷৄࡉ͕Θ͔Βͳ͍ਓͰϓ
ϩάϥϜͷมߋΛՄೳʹ͍ͨ͠
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ઃఆهड़ݴޠ(ͱͯ͑ͦ͠͏ͳͷ)
• XML
• INI
• JSON
• YAML
• TOML
• ܰྔݴޠ(Lua, mruby, etc…)
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ݸਓతʹ͏͍͍ͱࢥͬͯΔͭ
• XML
• ਓ͕ؒॻ͘ͷ͡Όͳ͍
• YAML
• ਓؒʹॻ͖͍͚͢Ͳ༷͕ෳࡶ
• JSON
• ίϝϯτ͕ॻ͚ͳ͍
• 8ਐ͕͑ͳ͍(e.g. ύʔϛογϣϯͱ͔)
• ඌͷΧϯϚফ͠ΕͯγϯλοΫεΤϥʔorz
• σʔλϑΥʔϚοτͱͯ͠༏ल͕ͩઃఆϑΝΠϧͱͯͭ͠Β͍
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ઃఆهड़ݴޠ(ͱͯ͑ͦ͠͏ͳͷ)
• INI
• TOML
• ܰྔݴޠ(Lua, mruby, etc…)
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ઃఆهड़ݴޠ(ͱͯ͑ͦ͠͏ͳͷ)
• INI
• TOML
• ܰྔݴޠ(Lua, mruby, etc…)
ࠓճ͕࣌ؒͳ͍ͷͰল͖·͢
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TOML
• ͋ΔҙຯAdvanced-INI
• ਓ͕ؒಡΈॻ͖͍͢͠
• ྻɺ֊ߏ͕ѻ͑Δ
• ࠷͕ۙࣗGoͰ։ൃ͢Δ࣌΄΅͜Ε
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TOMLͷGo࣮
• ͍Ζ͍Ζ͋Δ͚ͲˣΛͬͯ·͢
• github.com/BurntSushi/toml
• ઃఆϑΝΠϧͷΛͦͷ··ߏମʹϚοϐϯάՄೳ
• encoding/jsonͷMarshalͱUnMarshalΈ͍ͨͳײ͡
• TOMLͷઃఆࣗମΛੜ͢Δ͜ͱՄೳ
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TOML in Go
cachectlͷ߹
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cachectl
• GoͰॻ͔ΕͨOSͷϖʔδΩϟογϡ֬ೝɾআπʔϧ
• https://github.com/cubicdaiya/cachectl
• ແବͳϖʔδΩϟογϡΛղ์͢Δͷʹར༻
• cachectld͍ͬͯ͏σʔϞϯ͕͍ͯΔ
• ͜ͷσʔϞϯͷઃఆϑΝΠϧ͕TOML
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cachectld.toml
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slackboard
• GoͰॻ͔ΕͨSlackϓϩΩγ
• https://github.com/cubicdaiya/slackboard
• ͜ΕͷઃఆϑΝΠϧTOML
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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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TOMLઃఆ༻ͷߏମఆٛ(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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TOMLઃఆ༻ͷߏମఆٛ(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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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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TOMLઃఆͷΤΫεϙʔτ
var b bytes.Buffer
// ݱࡏͷTOMLͷઃఆΛόοϑΝʹॻ͖ग़͢
e := toml.NewEncoder(&b)
err := e.Encode(confToml)
if err != nil {
log.Fatal(err.Error())
}
// ઃఆϑΝΠϧͷ༰Λग़ྗ
fmt.Println(b.String())
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·ͱΊ
• TOML͍͍ΑTOML
• GoͳΒˣ͕͓͢͢Ί
• github.com/BurntSushi/toml
• P.S.
• հ͢Δ࣌ؒͳ͔͚ͬͨͲgopher-luaͱ͔ྑͦ͞͏