new config framework in proxy

ocis-pkg/config/config.go

@@ -1,12 +1,8 @@
 package config
 
 import (
-	"fmt"
-	"reflect"
-
 	"github.com/owncloud/ocis/ocis-pkg/shared"
 
-	gofig "github.com/gookit/config/v2"
 	accounts "github.com/owncloud/ocis/accounts/pkg/config"
 	glauth "github.com/owncloud/ocis/glauth/pkg/config"
 	graphExplorer "github.com/owncloud/ocis/graph-explorer/pkg/config"
@@ -180,39 +176,11 @@ func GetEnv() []string {
 	return r
 }
 
-// UnmapEnv loads values from the gooconf.Config argument and sets them in the expected destination.
-func (c *Config) UnmapEnv(gooconf *gofig.Config) error {
-	vals := structMappings(c)
-	for i := range vals {
-		for j := range vals[i].EnvVars {
-			// we need to guard against v != "" because this is the condition that checks that the value is set from the environment.
-			// the `ok` guard is not enough, apparently.
-			if v, ok := gooconf.GetValue(vals[i].EnvVars[j]); ok && v != "" {
-
-				// get the destination type from destination
-				switch reflect.ValueOf(vals[i].Destination).Type().String() {
-				case "*bool":
-					r := gooconf.Bool(vals[i].EnvVars[j])
-					*vals[i].Destination.(*bool) = r
-				case "*string":
-					r := gooconf.String(vals[i].EnvVars[j])
-					*vals[i].Destination.(*string) = r
-				case "*int":
-					r := gooconf.Int(vals[i].EnvVars[j])
-					*vals[i].Destination.(*int) = r
-				case "*float64":
-					// defaults to float64
-					r := gooconf.Float(vals[i].EnvVars[j])
-					*vals[i].Destination.(*float64) = r
-				default:
-					// it is unlikely we will ever get here. Let this serve more as a runtime check for when debugging.
-					return fmt.Errorf("invalid type for env var: `%v`", vals[i].EnvVars[j])
-				}
-			}
-		}
-	}
-
-	return nil
+// StructMappings binds a set of environment variables to a destination on cfg. Iterating over this set and editing the
+// Destination value of a binding will alter the original value, as it is a pointer to its memory address. This lets
+// us propagate changes easier.
+func StructMappings(cfg *Config) []shared.EnvBinding {
+	return structMappings(cfg)
 }
 
 func structMappings(cfg *Config) []shared.EnvBinding {

ocis/pkg/command/proxy.go

@@ -5,11 +5,14 @@ package command
 
 import (
 	"github.com/owncloud/ocis/ocis-pkg/config"
+	"github.com/owncloud/ocis/ocis-pkg/shared"
 	"github.com/owncloud/ocis/ocis/pkg/register"
 	"github.com/owncloud/ocis/proxy/pkg/command"
 	"github.com/urfave/cli/v2"
 )
 
+var globalLog shared.Log
+
 // ProxyCommand is the entry point for the proxy command.
 func ProxyCommand(cfg *config.Config) *cli.Command {
 	return &cli.Command{
@@ -20,10 +23,20 @@ func ProxyCommand(cfg *config.Config) *cli.Command {
 			command.PrintVersion(cfg.Proxy),
 		},
 		Before: func(ctx *cli.Context) error {
-			return ParseConfig(ctx, cfg)
+			if err := ParseConfig(ctx, cfg); err != nil {
+				return err
+			}
+
+			globalLog = cfg.Log
+
+			return nil
 		},
 		Action: func(c *cli.Context) error {
-			cfg.Proxy.Log = cfg.Log
+			// if proxy logging is empty in ocis.yaml
+			if (cfg.Proxy.Log == shared.Log{}) && (globalLog != shared.Log{}) {
+				// we can safely inherit the global logging values.
+				cfg.Proxy.Log = globalLog
+			}
 			origCmd := command.Server(cfg.Proxy)
 			return handleOriginalAction(c, origCmd)
 		},

ocis/pkg/command/root.go

@@ -62,7 +62,7 @@ func NewLogger(cfg *config.Config) log.Logger {
 	)
 }
 
-// ParseConfig loads ocis configuration from known paths.
+// ParseConfig loads ocis configuration.
 func ParseConfig(c *cli.Context, cfg *config.Config) error {
 	conf, err := ociscfg.BindSourcesToStructs("ocis", cfg)
 	if err != nil {
@@ -71,9 +71,6 @@ func ParseConfig(c *cli.Context, cfg *config.Config) error {
 
 	conf.LoadOSEnv(config.GetEnv(), false)
 
-	if err = cfg.UnmapEnv(conf); err != nil {
-		return err
-	}
-
-	return nil
+	bindings := config.StructMappings(cfg)
+	return ociscfg.BindEnv(conf, bindings)
 }

proxy/pkg/command/root.go

@@ -4,6 +4,8 @@ import (
 	"context"
 	"os"
 
+	"github.com/owncloud/ocis/ocis-pkg/shared"
+
 	ociscfg "github.com/owncloud/ocis/ocis-pkg/config"
 	"github.com/owncloud/ocis/ocis-pkg/log"
 	"github.com/owncloud/ocis/ocis-pkg/version"
@@ -85,7 +87,9 @@ type SutureService struct {
 
 // NewSutureService creates a new proxy.SutureService
 func NewSutureService(cfg *ociscfg.Config) suture.Service {
-	cfg.Proxy.Log = cfg.Log
+	if (cfg.Proxy.Log == shared.Log{}) {
+		cfg.Proxy.Log = cfg.Log
+	}
 	return SutureService{
 		cfg: cfg.Proxy,
 	}

proxy/pkg/command/server.go

@@ -8,6 +8,11 @@ import (
 	"strings"
 	"time"
 
+	gofig "github.com/gookit/config/v2"
+	ociscfg "github.com/owncloud/ocis/ocis-pkg/config"
+
+	"github.com/owncloud/ocis/ocis-pkg/shared"
+
 	"github.com/coreos/go-oidc/v3/oidc"
 	"github.com/cs3org/reva/pkg/token/manager/jwt"
 	chimiddleware "github.com/go-chi/chi/v5/middleware"
@@ -40,10 +45,26 @@ func Server(cfg *config.Config) *cli.Command {
 		Name:  "server",
 		Usage: "Start integrated server",
 		Before: func(ctx *cli.Context) error {
+			// remember shared logging info to prevent empty overwrites
+			inLog := cfg.Log
+
 			if err := ParseConfig(ctx, cfg); err != nil {
 				return err
 			}
 
+			if (cfg.Log == shared.Log{}) && (inLog != shared.Log{}) {
+				// set the default to the parent config
+				cfg.Log = inLog
+
+				// and parse the environment
+				conf := &gofig.Config{}
+				conf.LoadOSEnv(config.GetEnv(), false)
+				bindings := config.StructMappings(cfg)
+				if err := ociscfg.BindEnv(conf, bindings); err != nil {
+					return err
+				}
+			}
+
 			if cfg.HTTP.Root != "/" {
 				cfg.HTTP.Root = strings.TrimSuffix(cfg.HTTP.Root, "/")
 			}