61 lines
1.5 KiB
Go
61 lines
1.5 KiB
Go
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package main
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import (
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"fmt"
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"os"
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"strings"
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"github.com/knadh/koanf/parsers/toml"
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"github.com/knadh/koanf/providers/env"
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"github.com/knadh/koanf/providers/file"
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"github.com/knadh/koanf/providers/posflag"
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"github.com/sirupsen/logrus"
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flag "github.com/spf13/pflag"
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)
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// Config is the config given by the user
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type Config struct {
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HTTPAddr string `koanf:"listen_addr"`
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}
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func initConfig() {
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f := flag.NewFlagSet("api", flag.ContinueOnError)
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f.Usage = func() {
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fmt.Println(f.FlagUsages())
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os.Exit(0)
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}
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// Register --config flag.
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f.StringSlice("config", []string{"config.toml"},
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"Path to one or more TOML config files to load in order")
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// Register --version flag.
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f.Bool("version", false, "Show build version")
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f.Parse(os.Args[1:])
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// Display version.
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if ok, _ := f.GetBool("version"); ok {
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fmt.Println(buildVersion, buildDate)
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os.Exit(0)
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}
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// Read the config files.
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cFiles, _ := f.GetStringSlice("config")
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for _, f := range cFiles {
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logger.WithFields(logrus.Fields{
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"file": f,
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}).Info("reading config")
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if err := ko.Load(file.Provider(f), toml.Parser()); err != nil {
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logger.Fatalf("error reading config: %v", err)
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}
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}
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// Load environment variables and merge into the loaded config.
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if err := ko.Load(env.Provider("DOGGO_API_", ".", func(s string) string {
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return strings.Replace(strings.ToLower(
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strings.TrimPrefix(s, "DOGGO_API_")), "__", ".", -1)
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}), nil); err != nil {
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logger.Fatalf("error loading env config: %v", err)
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}
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ko.Load(posflag.Provider(f, ".", ko), nil)
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}
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