Merge pull request #73 from telekom-mms/feature/log-config-on-daemon-…

…startup

Log Daemon config on startup in verbose mode

internal/daemon/cmd.go

@@ -102,6 +102,9 @@ func run(args []string) error {
 		log.SetLevel(log.DebugLevel)
 	}
 
+	// log config
+	log.WithField("config", config).Debug("Daemon starting with valid config")
+
 	// prepare directories
 	if err := prepareFolders(config); err != nil {
 		return err

internal/daemon/config.go

@@ -41,6 +41,12 @@ type Config struct {
 	TND             *tnd.Config
 }
 
+// String returns the configuration as string.
+func (c *Config) String() string {
+	b, _ := json.Marshal(c)
+	return string(b)
+}
+
 // Valid returns whether config is valid.
 func (c *Config) Valid() bool {
 	if c == nil ||

internal/daemon/config_test.go

@@ -15,6 +15,21 @@ import (
 	"github.com/telekom-mms/tnd/pkg/tnd"
 )
 
+// TestConfigString tests String of Config.
+func TestConfigString(t *testing.T) {
+	// test new config
+	c := NewConfig()
+	if c.String() == "" {
+		t.Errorf("string should not be empty: %s", c.String())
+	}
+
+	// test nil
+	c = nil
+	if c.String() != "null" {
+		t.Errorf("string should be null: %s", c.String())
+	}
+}
+
 // TestConfigValid tests Valid of Config.
 func TestConfigValid(t *testing.T) {
 	// test invalid