45 lines
1 KiB
Go
45 lines
1 KiB
Go
package cfg
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import (
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"fmt"
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"github.com/alecthomas/kong"
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)
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type AppSettings struct {
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ServerAddress string `name:"listen-address" env:"GEOIP_LISTEN_ADDRESS" help:"Address to use for the metrics server" default:"${default_address}"`
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DataFile string `name:"data-file" env:"GEOIP_DATA_FILE" help:"path to data file" default:"${default_file_path}"`
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DataURL string `name:"data-url" env:"GEOIP_DATA_URL" help:"url to data file"`
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}
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func NewAppSettings() *AppSettings {
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return &AppSettings{}
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}
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func (s *AppSettings) Parse() error {
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ctx := kong.Parse(
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s,
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kong.Vars{
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"default_address": ":8080",
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"default_file_path": "./data.csv",
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},
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kong.Name("country_geo_locations"),
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kong.Description("🚀 Start a simple web server for GeoIP data"),
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kong.UsageOnError(),
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)
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err := validateFlags(*s)
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if err != nil {
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ctx.PrintUsage(false)
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fmt.Println()
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return err
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}
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return nil
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}
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func validateFlags(settings AppSettings) error {
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if settings.DataURL == "" {
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return fmt.Errorf("error: invalid data url, must not be blank")
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}
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return nil
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}
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