fix: cache ttl interpolation

internal/command/server/admin/run.go

@@ -32,6 +32,8 @@ func RunCommand() *cli.Command {
 			logger.SetFormat(logger.Format(conf.Logger.Format))
 			logger.SetLevel(logger.Level(conf.Logger.Level))
 
+			logger.Debug(ctx.Context, "using config", logger.F("config", conf))
+
 			projectVersion := ctx.String("projectVersion")
 
 			if conf.Proxy.Sentry.DSN != "" {

internal/command/server/proxy/run.go

@@ -29,6 +29,8 @@ func RunCommand() *cli.Command {
 			logger.SetFormat(logger.Format(conf.Logger.Format))
 			logger.SetLevel(logger.Level(conf.Logger.Level))
 
+			logger.Debug(ctx.Context, "using config", logger.F("config", conf))
+
 			projectVersion := ctx.String("projectVersion")
 
 			if conf.Proxy.Sentry.DSN != "" {
@@ -49,7 +51,7 @@ func RunCommand() *cli.Command {
 				proxy.WithServerConfig(conf.Proxy),
 				proxy.WithRedisConfig(conf.Redis),
 				proxy.WithDirectorLayers(layers...),
-				proxy.WithDirectorCacheTTL(time.Duration(conf.Proxy.Cache.TTL)),
+				proxy.WithDirectorCacheTTL(time.Duration(*conf.Proxy.Cache.TTL)),
 			)
 
 			addrs, srvErrs := srv.Start(ctx.Context)

internal/config/environment.go

@@ -19,7 +19,7 @@ func (is *InterpolatedString) UnmarshalYAML(value *yaml.Node) error {
 		return errors.WithStack(err)
 	}
 
-	str, err := envsubst.EvalEnv(str)
+	str, err := envsubst.Eval(str, getEnv)
 	if err != nil {
 		return errors.WithStack(err)
 	}
@@ -38,7 +38,7 @@ func (ii *InterpolatedInt) UnmarshalYAML(value *yaml.Node) error {
 		return errors.Wrapf(err, "could not decode value '%v' (line '%d') into string", value.Value, value.Line)
 	}
 
-	str, err := envsubst.EvalEnv(str)
+	str, err := envsubst.Eval(str, getEnv)
 	if err != nil {
 		return errors.WithStack(err)
 	}
@@ -62,7 +62,7 @@ func (ifl *InterpolatedFloat) UnmarshalYAML(value *yaml.Node) error {
 		return errors.Wrapf(err, "could not decode value '%v' (line '%d') into string", value.Value, value.Line)
 	}
 
-	str, err := envsubst.EvalEnv(str)
+	str, err := envsubst.Eval(str, getEnv)
 	if err != nil {
 		return errors.WithStack(err)
 	}
@@ -86,7 +86,7 @@ func (ib *InterpolatedBool) UnmarshalYAML(value *yaml.Node) error {
 		return errors.Wrapf(err, "could not decode value '%v' (line '%d') into string", value.Value, value.Line)
 	}
 
-	str, err := envsubst.EvalEnv(str)
+	str, err := envsubst.Eval(str, getEnv)
 	if err != nil {
 		return errors.WithStack(err)
 	}
@@ -101,9 +101,10 @@ func (ib *InterpolatedBool) UnmarshalYAML(value *yaml.Node) error {
 	return nil
 }
 
+var getEnv = os.Getenv
+
 type InterpolatedMap struct {
-	Data   map[string]any
+	Data map[string]any
-	getEnv func(string) string
 }
 
 func (im *InterpolatedMap) UnmarshalYAML(value *yaml.Node) error {
@@ -113,10 +114,6 @@ func (im *InterpolatedMap) UnmarshalYAML(value *yaml.Node) error {
 		return errors.Wrapf(err, "could not decode value '%v' (line '%d') into map", value.Value, value.Line)
 	}
 
-	if im.getEnv == nil {
-		im.getEnv = os.Getenv
-	}
-
 	interpolated, err := im.interpolateRecursive(data)
 	if err != nil {
 		return errors.WithStack(err)
@@ -140,7 +137,7 @@ func (im InterpolatedMap) interpolateRecursive(data any) (any, error) {
 		}
 
 	case string:
-		value, err := envsubst.Eval(typ, im.getEnv)
+		value, err := envsubst.Eval(typ, getEnv)
 		if err != nil {
 			return nil, errors.WithStack(err)
 		}
@@ -171,7 +168,7 @@ func (iss *InterpolatedStringSlice) UnmarshalYAML(value *yaml.Node) error {
 	}
 
 	for index, value := range data {
-		value, err := envsubst.EvalEnv(value)
+		value, err := envsubst.Eval(value, getEnv)
 		if err != nil {
 			return errors.WithStack(err)
 		}
@@ -193,7 +190,7 @@ func (id *InterpolatedDuration) UnmarshalYAML(value *yaml.Node) error {
 		return errors.Wrapf(err, "could not decode value '%v' (line '%d') into string", value.Value, value.Line)
 	}
 
-	str, err := envsubst.EvalEnv(str)
+	str, err := envsubst.Eval(str, getEnv)
 	if err != nil {
 		return errors.WithStack(err)
 	}

internal/config/environment_test.go

@@ -4,6 +4,7 @@ import (
 	"fmt"
 	"os"
 	"testing"
+	"time"
 
 	"github.com/pkg/errors"
 	"gopkg.in/yaml.v3"
@@ -65,7 +66,7 @@ func TestInterpolatedMap(t *testing.T) {
 			var interpolatedMap InterpolatedMap
 
 			if tc.Env != nil {
-				interpolatedMap.getEnv = func(key string) string {
+				getEnv = func(key string) string {
 					return tc.Env[key]
 				}
 			}
@@ -80,3 +81,54 @@ func TestInterpolatedMap(t *testing.T) {
 		})
 	}
 }
+
+func TestInterpolatedDuration(t *testing.T) {
+	type testCase struct {
+		Path   string
+		Env    map[string]string
+		Assert func(t *testing.T, parsed *InterpolatedDuration)
+	}
+
+	testCases := []testCase{
+		{
+			Path: "testdata/environment/interpolated-duration.yml",
+			Env: map[string]string{
+				"MY_DURATION": "30s",
+			},
+			Assert: func(t *testing.T, parsed *InterpolatedDuration) {
+				if e, g := 30*time.Second, parsed; e != time.Duration(*g) {
+					t.Errorf("parsed: expected '%v', got '%v'", e, g)
+				}
+			},
+		},
+	}
+
+	for idx, tc := range testCases {
+		t.Run(fmt.Sprintf("Case #%d", idx), func(t *testing.T) {
+			data, err := os.ReadFile(tc.Path)
+			if err != nil {
+				t.Fatalf("%+v", errors.WithStack(err))
+			}
+
+			if tc.Env != nil {
+				getEnv = func(key string) string {
+					return tc.Env[key]
+				}
+			}
+
+			config := struct {
+				Duration *InterpolatedDuration `yaml:"duration"`
+			}{
+				Duration: NewInterpolatedDuration(-1),
+			}
+
+			if err := yaml.Unmarshal(data, &config); err != nil {
+				t.Fatalf("%+v", errors.WithStack(err))
+			}
+
+			if tc.Assert != nil {
+				tc.Assert(t, config.Duration)
+			}
+		})
+	}
+}

internal/config/proxy_server.go

@@ -113,12 +113,12 @@ func NewDefaultDialConfig() DialConfig {
 }
 
 type CacheConfig struct {
-	TTL InterpolatedDuration `yaml:"ttl"`
+	TTL *InterpolatedDuration `yaml:"ttl"`
 }
 
 func NewDefaultCacheConfig() CacheConfig {
 	return CacheConfig{
-		TTL: *NewInterpolatedDuration(time.Second * 30),
+		TTL: NewInterpolatedDuration(time.Second * 30),
 	}
 }
 

internal/config/testdata/environment/interpolated-duration.yml

@@ -0,0 +1 @@
+duration: ${MY_DURATION}