Load config from Viper on Before hook (#51)

* abstract ParseConfig to its own scope

* remove hardcoded values

* parse config from root if present

* update example.json

* fix linter

* code style

config/example.json

@@ -7,7 +7,8 @@
   },
   "http": {
     "addr": "0.0.0.0:9130",
-    "root": "/"
+    "root": "/",
+    "tls": true
   },
   "tracing": {
     "enabled": false,

go.sum

@@ -356,6 +356,7 @@ github.com/longsleep/go-metrics v0.0.0-20191013204616-cddea569b0ea/go.mod h1:w6Q
 github.com/lucas-clemente/quic-go v0.12.1/go.mod h1:UXJJPE4RfFef/xPO5wQm0tITK8gNfqwTxjbE7s3Vb8s=
 github.com/lucas-clemente/quic-go v0.13.1 h1:CxtJTXQIh2aboCPk0M6vf530XOov6DZjVBiSE3nSj8s=
 github.com/lucas-clemente/quic-go v0.13.1/go.mod h1:Vn3/Fb0/77b02SGhQk36KzOUmXgVpFfizUfW5WMaqyU=
+github.com/lucas-clemente/quic-go v0.14.1 h1:c1aKoBZKOPA+49q96B1wGkibyPP0AxYh45WuAoq+87E=
 github.com/lucas-clemente/quic-go v0.14.1/go.mod h1:Vn3/Fb0/77b02SGhQk36KzOUmXgVpFfizUfW5WMaqyU=
 github.com/lyft/protoc-gen-validate v0.0.13/go.mod h1:XbGvPuh87YZc5TdIa2/I4pLk0QoUACkjt2znoq26NVQ=
 github.com/magiconair/properties v1.8.0/go.mod h1:PppfXfuXeibc/6YijjN8zIbojt8czPbwD3XqdrwzmxQ=
@@ -481,8 +482,6 @@ github.com/oracle/oci-go-sdk v7.0.0+incompatible/go.mod h1:VQb79nF8Z2cwLkLS35ukw
 github.com/orcaman/concurrent-map v0.0.0-20190826125027-8c72a8bb44f6 h1:lNCW6THrCKBiJBpz8kbVGjC7MgdCGKwuvBgc7LoD6sw=
 github.com/orcaman/concurrent-map v0.0.0-20190826125027-8c72a8bb44f6/go.mod h1:Lu3tH6HLW3feq74c2GC+jIMS/K2CFcDWnWD9XkenwhI=
 github.com/ovh/go-ovh v0.0.0-20181109152953-ba5adb4cf014/go.mod h1:joRatxRJaZBsY3JAOEMcoOp05CnZzsx4scTxi95DHyQ=
-github.com/owncloud/ocis-pkg/v2 v2.0.3-0.20200309135548-7e0d3cab3467 h1:7uOmEVi7tiwth1A34F3vk5eaGLDGnJyxgnptpVj8Vbo=
-github.com/owncloud/ocis-pkg/v2 v2.0.3-0.20200309135548-7e0d3cab3467/go.mod h1:TrBRa+D8mUTsl+qvQiIksJbUvxdE/Qq9jEHUcERPQ60=
 github.com/owncloud/ocis-pkg/v2 v2.0.3-0.20200309150924-5c659fd4b0ad h1:R6JGg68GP8bzzl3L5xso8n9ifay5KUfz2XMQ1KS0pbI=
 github.com/owncloud/ocis-pkg/v2 v2.0.3-0.20200309150924-5c659fd4b0ad/go.mod h1:TrBRa+D8mUTsl+qvQiIksJbUvxdE/Qq9jEHUcERPQ60=
 github.com/oxtoacart/bpool v0.0.0-20190530202638-03653db5a59c h1:rp5dCmg/yLR3mgFuSOe4oEnDDmGLROTvMragMUXpTQw=

pkg/command/root.go

@@ -32,45 +32,7 @@ func Execute() error {
 		Flags: flagset.RootWithConfig(cfg),
 
 		Before: func(c *cli.Context) error {
-			logger := NewLogger(cfg)
-
-			viper.SetEnvKeyReplacer(strings.NewReplacer(".", "_"))
-			viper.SetEnvPrefix("KONNECTD")
-			viper.AutomaticEnv()
-
-			if c.IsSet("config-file") {
-				viper.SetConfigFile(c.String("config-file"))
-			} else {
-				viper.SetConfigName("konnectd")
-
-				viper.AddConfigPath("/etc/ocis")
-				viper.AddConfigPath("$HOME/.ocis")
-				viper.AddConfigPath("./config")
-			}
-
-			if err := viper.ReadInConfig(); err != nil {
-				switch err.(type) {
-				case viper.ConfigFileNotFoundError:
-					logger.Info().
-						Msg("Continue without config")
-				case viper.UnsupportedConfigError:
-					logger.Fatal().
-						Err(err).
-						Msg("Unsupported config type")
-				default:
-					logger.Fatal().
-						Err(err).
-						Msg("Failed to read config")
-				}
-			}
-
-			if err := viper.Unmarshal(&cfg); err != nil {
-				logger.Fatal().
-					Err(err).
-					Msg("Failed to parse config")
-			}
-
-			return nil
+			return ParseConfig(c, cfg)
 		},
 
 		Commands: []*cli.Command{
@@ -101,3 +63,46 @@ func NewLogger(cfg *config.Config) log.Logger {
 		log.Color(cfg.Log.Color),
 	)
 }
+
+// ParseConfig load configuration for every extension
+func ParseConfig(c *cli.Context, cfg *config.Config) error {
+	logger := NewLogger(cfg)
+
+	viper.SetEnvKeyReplacer(strings.NewReplacer(".", "_"))
+	viper.SetEnvPrefix("KONNECTD")
+	viper.AutomaticEnv()
+
+	if c.IsSet("config-file") {
+		viper.SetConfigFile(c.String("config-file"))
+	} else {
+		viper.SetConfigName("konnectd")
+
+		viper.AddConfigPath("/etc/ocis")
+		viper.AddConfigPath("$HOME/.ocis")
+		viper.AddConfigPath("./config")
+	}
+
+	if err := viper.ReadInConfig(); err != nil {
+		switch err.(type) {
+		case viper.ConfigFileNotFoundError:
+			logger.Info().
+				Msg("Continue without config")
+		case viper.UnsupportedConfigError:
+			logger.Fatal().
+				Err(err).
+				Msg("Unsupported config type")
+		default:
+			logger.Fatal().
+				Err(err).
+				Msg("Failed to read config")
+		}
+	}
+
+	if err := viper.Unmarshal(&cfg); err != nil {
+		logger.Fatal().
+			Err(err).
+			Msg("Failed to parse config")
+	}
+
+	return nil
+}

pkg/command/server.go

@@ -30,6 +30,7 @@ func Server(cfg *config.Config) *cli.Command {
 		Usage: "Start integrated server",
 		Flags: flagset.ServerWithConfig(cfg),
 		Before: func(c *cli.Context) error {
+
 			if cfg.HTTP.Root != "/" {
 				cfg.HTTP.Root = strings.TrimSuffix(cfg.HTTP.Root, "/")
 			}
@@ -48,7 +49,7 @@ func Server(cfg *config.Config) *cli.Command {
 				cfg.Konnectd.SigningPrivateKeyFiles = c.StringSlice("signing-private-key")
 			}
 
-			return nil
+			return ParseConfig(c, cfg)
 		},
 		Action: func(c *cli.Context) error {
 			logger := NewLogger(cfg)
@@ -155,8 +156,8 @@ func Server(cfg *config.Config) *cli.Command {
 					http.Context(ctx),
 					http.Config(cfg),
 					http.Metrics(metrics),
-					http.Flags(flagset.RootWithConfig(cfg)),
-					http.Flags(flagset.ServerWithConfig(cfg)),
+					http.Flags(flagset.RootWithConfig(config.New())),
+					http.Flags(flagset.ServerWithConfig(config.New())),
 				)
 
 				if err != nil {

pkg/server/http/server.go

@@ -53,7 +53,6 @@ func Server(opts ...Option) (http.Service, error) {
 		http.TLSConfig(tlsConfig),
 	)
 
-	options.Config.Konnectd.Listen = options.Config.HTTP.Addr
 	handle := svc.NewService(
 		svc.Logger(options.Logger),
 		svc.Config(options.Config),