66 lines
1.7 KiB
Go
66 lines
1.7 KiB
Go
package services
|
|
|
|
import (
|
|
"fmt"
|
|
"os"
|
|
"strings"
|
|
|
|
"github.com/knadh/koanf"
|
|
"github.com/knadh/koanf/parsers/toml"
|
|
"github.com/knadh/koanf/providers/confmap"
|
|
"github.com/knadh/koanf/providers/env"
|
|
"github.com/knadh/koanf/providers/file"
|
|
"github.com/knadh/koanf/providers/posflag"
|
|
"github.com/sirupsen/logrus"
|
|
"github.com/spf13/pflag"
|
|
)
|
|
|
|
func ConfigureApplication(
|
|
logger *logrus.Logger,
|
|
appName string,
|
|
defaultConfig map[string]interface{},
|
|
) (*koanf.Koanf, error) {
|
|
f := pflag.NewFlagSet("config", pflag.ContinueOnError)
|
|
f.Usage = func() {
|
|
fmt.Println(f.FlagUsages())
|
|
os.Exit(0)
|
|
}
|
|
f.StringSlice(
|
|
"conf",
|
|
[]string{fmt.Sprintf("%s.toml", strings.ToLower(appName))},
|
|
"path to one or more .toml files",
|
|
)
|
|
var err error
|
|
|
|
if err = f.Parse(os.Args[1:]); err != nil {
|
|
logger.Fatal(err)
|
|
}
|
|
|
|
config := koanf.New(".")
|
|
|
|
_ = config.Load(confmap.Provider(defaultConfig, "."), nil)
|
|
cFiles, _ := f.GetStringSlice("conf")
|
|
for _, c := range cFiles {
|
|
if err := config.Load(file.Provider(c), toml.Parser()); err != nil {
|
|
logger.Fatalf("error loading config file: %s", err)
|
|
}
|
|
}
|
|
if err := config.Load(posflag.Provider(f, ".", config), nil); err != nil {
|
|
logger.Fatalf("error loading configuration: %s", err)
|
|
}
|
|
if err := config.Load(
|
|
file.Provider("resource_app.toml"),
|
|
toml.Parser(),
|
|
); err != nil && !os.IsNotExist(err) {
|
|
logrus.Fatalf("error loading config: %v", err)
|
|
}
|
|
prefix := fmt.Sprintf("%s_", strings.ToUpper(appName))
|
|
if err := config.Load(env.Provider(prefix, ".", func(s string) string {
|
|
return strings.Replace(strings.ToLower(
|
|
strings.TrimPrefix(s, prefix)), "_", ".", -1)
|
|
}), nil); err != nil {
|
|
logrus.Fatalf("error loading config: %v", err)
|
|
}
|
|
return config, err
|
|
}
|