introduce userlog service

Signed-off-by: jkoberg <jkoberg@owncloud.com>

services/userlog/pkg/config/defaults/defaultconfig.go

@@ -0,0 +1,78 @@
+package defaults
+
+import (
+	"strings"
+
+	"github.com/owncloud/ocis/v2/ocis-pkg/shared"
+	"github.com/owncloud/ocis/v2/services/userlog/pkg/config"
+)
+
+// FullDefaultConfig returns the full default config
+func FullDefaultConfig() *config.Config {
+	cfg := DefaultConfig()
+	EnsureDefaults(cfg)
+	Sanitize(cfg)
+	return cfg
+}
+
+// DefaultConfig return the default configuration
+func DefaultConfig() *config.Config {
+	return &config.Config{
+		Service: config.Service{
+			Name: "userlog",
+		},
+		Events: config.Events{
+			Endpoint:  "127.0.0.1:9233",
+			Cluster:   "ocis-cluster",
+			EnableTLS: false,
+		},
+		Store: config.Store{
+			Type: "inmemory",
+		},
+		HTTP: config.HTTP{
+			Addr:      "127.0.0.1:0",
+			Root:      "/",
+			Namespace: "com.owncloud.userlog",
+			CORS: config.CORS{
+				AllowedOrigins:   []string{"*"},
+				AllowedMethods:   []string{"GET"},
+				AllowedHeaders:   []string{"Authorization", "Origin", "Content-Type", "Accept", "X-Requested-With"},
+				AllowCredentials: true,
+			},
+		},
+	}
+}
+
+// EnsureDefaults ensures the config contains default values
+func EnsureDefaults(cfg *config.Config) {
+	// provide with defaults for shared logging, since we need a valid destination address for "envdecode".
+	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{}
+	}
+
+	if cfg.GRPCClientTLS == nil {
+		cfg.GRPCClientTLS = &shared.GRPCClientTLS{}
+		if cfg.Commons != nil && cfg.Commons.GRPCClientTLS != nil {
+			cfg.GRPCClientTLS = cfg.Commons.GRPCClientTLS
+		}
+	}
+
+	if cfg.Commons != nil {
+		cfg.HTTP.TLS = cfg.Commons.HTTPServiceTLS
+	}
+}
+
+// Sanitize sanitizes the config
+func Sanitize(cfg *config.Config) {
+	// sanitize config
+	if cfg.HTTP.Root != "/" {
+		cfg.HTTP.Root = strings.TrimSuffix(cfg.HTTP.Root, "/")
+	}
+}