Initial commit

internal/config/app.go

@@ -0,0 +1,12 @@
+package config
+
+import (
+	logging "payouts/internal/log/config"
+	monitoring "payouts/internal/service/monitoring/config"
+)
+
+type App struct {
+	Server  Server
+	Metrics monitoring.Metrics
+	Log     logging.Log
+}

internal/config/module.go

@@ -0,0 +1,86 @@
+package config
+
+import (
+	"fmt"
+	"path/filepath"
+	"strings"
+
+	"github.com/go-viper/encoding/javaproperties"
+	"github.com/go-viper/mapstructure/v2"
+	"github.com/ogier/pflag"
+	"github.com/spf13/viper"
+	"go.uber.org/fx"
+
+	monitoring "payouts/internal/service/monitoring/config"
+)
+
+const (
+	ConfigPathArg     = "config-path"
+	ConfigPathDefault = "./payouts.properties"
+)
+
+var Module = fx.Provide(NewAppConfig)
+
+func getConfigData(filePath string) (string, string, string) {
+	dir, file := filepath.Split(filePath)
+	base := filepath.Base(file)
+	ext := filepath.Ext(base)
+
+	confPath, _ := filepath.Abs(dir)
+	confName := strings.TrimSuffix(base, ext)
+	confType := strings.Trim(ext, ".")
+
+	return confPath, confName, confType
+}
+
+func NewAppConfig() (*App, error) {
+	mainConfig := &App{}
+
+	configPaths := []string{ConfigPathDefault}
+
+	configPath := pflag.String(ConfigPathArg, "", "")
+	pflag.Parse()
+
+	configPaths = append(configPaths, *configPath)
+
+	codecRegistry := viper.NewCodecRegistry()
+	codec := &javaproperties.Codec{}
+	codecRegistry.RegisterCodec("properties", codec)
+	codecRegistry.RegisterCodec("props", codec)
+	codecRegistry.RegisterCodec("prop", codec)
+
+	conf := viper.New()
+
+	for num, path := range configPaths {
+		if len(path) < 1 {
+			continue
+		}
+		tempConf := viper.NewWithOptions(
+			viper.WithCodecRegistry(codecRegistry),
+		)
+
+		confPath, confName, confType := getConfigData(path)
+		tempConf.AddConfigPath(confPath)
+		tempConf.SetConfigName(confName)
+		tempConf.SetConfigType(confType)
+
+		err := tempConf.ReadInConfig()
+		if err != nil {
+			// complain on missed non-default config
+			if num > 0 {
+				fmt.Printf("Can't read config from %v, Error: %v\n", path, err)
+			}
+		} else {
+			_ = conf.MergeConfigMap(tempConf.AllSettings())
+		}
+	}
+	err := conf.Unmarshal(mainConfig, viper.DecodeHook(
+		mapstructure.ComposeDecodeHookFunc(
+			mapstructure.TextUnmarshallerHookFunc(),
+			mapstructure.StringToSliceHookFunc(","),
+			mapstructure.StringToTimeDurationHookFunc(),
+			monitoring.CommaSeparatedFloat64SliceHookFunc(),
+		)))
+
+	return mainConfig, err
+}

internal/config/server.go

@@ -0,0 +1,20 @@
+package config
+
+import (
+	"time"
+)
+
+type Tls struct {
+	Enabled  bool
+	CertFile string
+	KeyFile  string
+}
+
+// Server represents the server configiration
+type Server struct {
+	Tls                  Tls
+	Port                 string
+	WriteTimeout         time.Duration
+	ReadTimeout          time.Duration
+	EnablePProfEndpoints bool
+}