return 0, auth.ErrInvalidDuration
	}
	return dur, nil
}

// Lookup returns a new Config by merging the given K/V config
// system with environment variables.
func Lookup(kvs config.KVS) (Config, error) {
	if err := config.CheckValidKeys(config.IdentityTLSSubSys, kvs, DefaultKVS); err != nil {
		return Config{}, err
	}
	cfg := Config{}
	var err error
	v := env.Get(EnvIdentityTLSEnabled, "")
	if v == "" {
		return cfg, nil

	return srvCfg.Merge(), nil
}

// ConfigSys - config system.
type ConfigSys struct{}

// Init - initializes config system from config.json.
func (sys *ConfigSys) Init(objAPI ObjectLayer) error {
	if objAPI == nil {
		return errInvalidArgument
	}

	return initConfig(objAPI)
}

// NewConfigSys - creates new config system object.
func NewConfigSys() *ConfigSys {
	return &ConfigSys{}
}

> NOTE: MinIO environmental variables still take precedence over the `config.yaml` file, however `config.yaml` is preferred over MinIO internal config KV settings via `mc admin config set alias/ <sub-system>`.

### TODO

In subsequent releases we are planning to extend this to provide things like

{
  "configs": [
    {
      "@type": "type.googleapis.com/envoy.admin.v3.SecretsConfigDump",
      "dynamic_active_secrets": [
        {
          "name": "default",
          "last_updated": "2023-05-15T01:32:52.262Z",
          "secret": {
            "@type": "type.googleapis.com/envoy.extensions.transport_sockets.tls.v3.Secret",
            "name": "default",
            "tls_certificate": {
              "certificate_chain": {

{
  "configs": [
    {
      "@type": "type.googleapis.com/envoy.admin.v3.RoutesConfigDump",
      "dynamic_route_configs": [
        {
          "version_info": "2022-03-04T07:18:48Z/22",
          "route_config": {
            "@type": "type.googleapis.com/envoy.config.route.v3.RouteConfiguration",
            "name": "https.443.https.bookinfo-gateway.default",
            "virtual_hosts": [
              {
                "name": "*:443",

}

// Cmd represents the config subcommand command
func Cmd() *cobra.Command {
	configCmd := &cobra.Command{
		Use:   "config SUBCOMMAND",
		Short: "Configure istioctl defaults",
		Args:  cobra.NoArgs,
		Example: `  # list configuration parameters
  istioctl experimental config list`,
	}
	configCmd.AddCommand(listCommand())
	return configCmd
}

}

// Enabled returns if opa is enabled.
func Enabled(kvs config.KVS) bool {
	return kvs.Get(URL) != ""
}

// LookupConfig lookup Opa from config, override with any ENVs.
func LookupConfig(kv config.KVS, transport *http.Transport, closeRespFn func(io.ReadCloser)) (Args, error) {
	args := Args{}

	if err := config.CheckValidKeys(config.PolicyOPASubSys, kv, DefaultKVS); err != nil {
		return args, err
	}

Sebastián Ramírez <******@****.***> 1688749933 +0200

// See the License for the specific language governing permissions and
// limitations under the License.

package config

import (
	"fmt"
	"strings"
	"testing"

	"github.com/spf13/viper"

	"istio.io/istio/istioctl/pkg/util/testutil"
	"istio.io/istio/pkg/config/constants"
)

func TestConfigList(t *testing.T) {
	cases := []testutil.TestCase{
		//{ // case 0

		t.Errorf("Expecting region `us-east-1` found %s", globalSite.Region)
	}

	// Set new region and verify.
	config.SetRegion(globalServerConfig, "us-west-1")
	site, err := config.LookupSite(
		globalServerConfig[config.SiteSubSys][config.Default],
		globalServerConfig[config.RegionSubSys][config.Default],
	)
	if err != nil {
		t.Fatal(err)
	}
	if site.Region != "us-west-1" {