Added default configs

internal/config/config.go

@@ -55,6 +55,7 @@ func LoadConfiguration(viperInstance *viper.Viper, args []string) (*UncorsConfig
 		URLMappingHookFunc(),
 	))
 
+	setDefaultValues(viperInstance)
 	if err := viperInstance.Unmarshal(configuration, configOption); err != nil {
 		return nil, fmt.Errorf("filed parsing config: %w", err)
 	}

internal/config/config_test.go

@@ -2,6 +2,7 @@ package config_test
 
 import (
 	"testing"
+	"time"
 
 	"github.com/evg4b/uncors/internal/config"
 	"github.com/evg4b/uncors/testing/testconstants"
@@ -47,6 +48,9 @@ debug: true
 https-port: 8081
 cert-file: /etc/certificates/cert-file.pem
 key-file: /etc/certificates/key-file.key
+cache-config:
+  expiration-time: 1h
+  clear-time: 30m
 `
 )
 
@@ -89,6 +93,10 @@ func TestLoadConfiguration(t *testing.T) {
 					HTTPPort:  80,
 					HTTPSPort: 443,
 					Mappings:  config.Mappings{},
+					CacheConfig: config.CacheConfig{
+						ExpirationTime: config.DefaultExpirationTime,
+						ClearTime:      config.DefaultClearTime,
+					},
 				},
 			},
 			{
@@ -100,6 +108,10 @@ func TestLoadConfiguration(t *testing.T) {
 					Mappings: config.Mappings{
 						{From: testconstants.HTTPLocalhost, To: testconstants.HTTPSGithub},
 					},
+					CacheConfig: config.CacheConfig{
+						ExpirationTime: config.DefaultExpirationTime,
+						ClearTime:      config.DefaultClearTime,
+					},
 				},
 			},
 			{
@@ -139,6 +151,10 @@ func TestLoadConfiguration(t *testing.T) {
 					HTTPSPort: 8081,
 					CertFile:  testconstants.CertFilePath,
 					KeyFile:   testconstants.KeyFilePath,
+					CacheConfig: config.CacheConfig{
+						ExpirationTime: time.Hour,
+						ClearTime:      30 * time.Minute,
+					},
 				},
 			},
 			{
@@ -186,6 +202,10 @@ func TestLoadConfiguration(t *testing.T) {
 					HTTPSPort: 8081,
 					CertFile:  testconstants.CertFilePath,
 					KeyFile:   testconstants.KeyFilePath,
+					CacheConfig: config.CacheConfig{
+						ExpirationTime: time.Hour,
+						ClearTime:      30 * time.Minute,
+					},
 				},
 			},
 		}

internal/config/default.go

@@ -0,0 +1,17 @@
+package config
+
+import (
+	"time"
+
+	"github.com/spf13/viper"
+)
+
+const (
+	DefaultExpirationTime = 30 * time.Minute
+	DefaultClearTime      = 30 * time.Minute
+)
+
+func setDefaultValues(instance *viper.Viper) {
+	instance.SetDefault("cache-config.expiration-time", DefaultExpirationTime)
+	instance.SetDefault("cache-config.clear-time", DefaultClearTime)
+}

internal/handler/uncors_handler.go

@@ -67,9 +67,14 @@ func NewUncorsRequestHandler(options ...RequestHandlerOption) *RequestHandler {
 		handler.makeStaticRoutes(router, mapping.Statics, proxyHandler)
 		handler.makeMockedRoutes(router, mapping.Mocks)
 
-		cachePrefix := fmt.Sprintf("mapping_%d", index)
-		cacheMiddleware := handler.cacheMiddlewareFactory(cachePrefix, mapping.Cache)
-		setDefaultHandler(router, cacheMiddleware.Wrap(proxyHandler))
+		var defaultHandler contracts.Handler = proxyHandler
+		if len(mapping.Cache) > 0 {
+			cachePrefix := fmt.Sprintf("mapping_%d", index)
+			cacheMiddleware := handler.cacheMiddlewareFactory(cachePrefix, mapping.Cache)
+			defaultHandler = cacheMiddleware.Wrap(proxyHandler)
+		}
+
+		setDefaultHandler(router, defaultHandler)
 	}
 
 	setDefaultHandler(handler.router, contracts.HandlerFunc(func(writer contracts.ResponseWriter, _ *http.Request) {