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