refactor audit

Signed-off-by: Christian Richter <crichter@owncloud.com>

extensions/audit/pkg/config/defaults/defaultconfig.go

@@ -0,0 +1,49 @@
+package defaults
+
+import (
+	"github.com/owncloud/ocis/extensions/audit/pkg/config"
+)
+
+func FullDefaultConfig() *config.Config {
+	cfg := DefaultConfig()
+
+	EnsureDefaults(cfg)
+	Sanitize(cfg)
+
+	return cfg
+}
+
+func DefaultConfig() *config.Config {
+	return &config.Config{
+		Service: config.Service{
+			Name: "audit",
+		},
+		Events: config.Events{
+			Endpoint:      "127.0.0.1:9233",
+			Cluster:       "ocis-cluster",
+			ConsumerGroup: "audit",
+		},
+		Auditlog: config.Auditlog{
+			LogToConsole: true,
+			Format:       "json",
+		},
+	}
+}
+
+func EnsureDefaults(cfg *config.Config) {
+	// provide with defaults for shared logging, since we need a valid destination address for BindEnv.
+	if cfg.Log == nil && cfg.Commons != nil && cfg.Commons.Log != nil {
+		cfg.Log = &config.Log{
+			Level:  cfg.Commons.Log.Level,
+			Pretty: cfg.Commons.Log.Pretty,
+			Color:  cfg.Commons.Log.Color,
+			File:   cfg.Commons.Log.File,
+		}
+	} else if cfg.Log == nil {
+		cfg.Log = &config.Log{}
+	}
+}
+
+func Sanitize(cfg *config.Config) {
+	// sanitize config
+}