feat: add additional routes from defined directory

internal/config.go

@@ -76,7 +76,7 @@ func (GatewayServer) Config(configFile string, ctx context.Context) (*GatewaySer
 
 	}
 	logger.Info("Generating new configuration file...")
-	// check if config directory does exist
+	// check if config Directory does exist
 	if !util.FolderExists(ConfigDir) {
 		err := os.MkdirAll(ConfigDir, os.ModePerm)
 		if err != nil {

internal/extra_config.go

@@ -0,0 +1,47 @@
+/*
+ * Copyright 2024 Jonas Kaninda
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+package pkg
+
+import (
+	"fmt"
+	"os"
+	"path/filepath"
+)
+
+// loadExtraFiles loads routes files in .yml and .yaml based on defined directory
+func loadExtraFiles(routePath string) ([]string, error) {
+	// Slice to store YAML/YML files
+	var yamlFiles []string
+	// Walk through the Directory
+	err := filepath.Walk(routePath, func(path string, info os.FileInfo, err error) error {
+		if err != nil {
+			return err
+		}
+		// Check for .yaml or .yml file extension
+		if !info.IsDir() && (filepath.Ext(path) == ".yaml" || filepath.Ext(path) == ".yml") {
+			yamlFiles = append(yamlFiles, path)
+		}
+		return nil
+	})
+
+	if err != nil {
+		//log.Fatalf("error walking the path %v: %v", routePath, err)
+		return nil, fmt.Errorf("error loading extra route files: %v", err)
+	}
+	return yamlFiles, nil
+}

internal/gateway_type.go

@@ -38,6 +38,7 @@ type Gateway struct {
 	AccessLog           string           `yaml:"accessLog" env:"GOMA_ACCESS_LOG, overwrite"`
 	ErrorLog            string           `yaml:"errorLog" env:"GOMA_ERROR_LOG=, overwrite"`
 	LogLevel            string           `yaml:"logLevel" env:"GOMA_LOG_LEVEL, overwrite"`
+	ExtraRoutes         ExtraRouteConfig `yaml:"extraRoutes"`
 	// DisableHealthCheckStatus enable and disable routes health check
 	DisableHealthCheckStatus bool `yaml:"disableHealthCheckStatus"`
 	// DisableRouteHealthCheckError allows enabling and disabling backend healthcheck errors

internal/route.go

@@ -35,18 +35,27 @@ func init() {
 // Initialize initializes the routes
 func (gatewayServer GatewayServer) Initialize() *mux.Router {
 	gateway := gatewayServer.gateway
+	dynamicRoutes = gateway.Routes
+	// Load Extra Routes
+	if len(gateway.ExtraRoutes.Directory) != 0 {
+		extraRoutes, err := loadExtraRoutes(gateway.ExtraRoutes.Directory)
+		if err != nil {
+			logger.Error(err.Error())
+		}
+		dynamicRoutes = append(dynamicRoutes, extraRoutes...)
+	}
 	m := gatewayServer.middlewares
 	redisBased := false
 	if len(gateway.Redis.Addr) != 0 {
 		redisBased = true
 	}
 	// Routes background healthcheck
-	routesHealthCheck(gateway.Routes)
+	routesHealthCheck(dynamicRoutes)
 
 	r := mux.NewRouter()
 	heath := HealthCheckRoute{
 		DisableRouteHealthCheckError: gateway.DisableRouteHealthCheckError,
-		Routes:                       gateway.Routes,
+		Routes:                       dynamicRoutes,
 	}
 	if gateway.EnableMetrics {
 		// Prometheus endpoint
@@ -80,7 +89,7 @@ func (gatewayServer GatewayServer) Initialize() *mux.Router {
 		// Add rate limit middlewares
 		r.Use(limiter.RateLimitMiddleware())
 	}
-	for rIndex, route := range gateway.Routes {
+	for rIndex, route := range dynamicRoutes {
 		if len(route.Path) != 0 {
 			// Checks if route destination and backend are empty
 			if len(route.Destination) == 0 && len(route.Backends) == 0 {

internal/route_config.go

@@ -0,0 +1,55 @@
+/*
+ * Copyright 2024 Jonas Kaninda
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+package pkg
+
+import (
+	"fmt"
+	"github.com/jkaninda/goma-gateway/pkg/logger"
+	"gopkg.in/yaml.v3"
+	"os"
+)
+
+// loadExtraRoutes loads additional routes
+func loadExtraRoutes(routePath string) ([]Route, error) {
+	logger.Info("Loading additional routes from %s", routePath)
+	yamlFiles, err := loadExtraFiles(routePath)
+	if err != nil {
+		return nil, fmt.Errorf("error loading extra files: %v", err)
+	}
+	var extraRoutes []Route
+	for _, yamlFile := range yamlFiles {
+		buf, err := os.ReadFile(yamlFile)
+		if err != nil {
+			return nil, fmt.Errorf("error loading extra file: %v", err)
+		}
+		ex := &ExtraRoute{}
+		err = yaml.Unmarshal(buf, ex)
+		if err != nil {
+			return nil, fmt.Errorf("in file %q: %w", ConfigFile, err)
+		}
+		extraRoutes = append(extraRoutes, ex.Routes...)
+
+	}
+	if len(extraRoutes) == 0 {
+		return nil, fmt.Errorf("no extra routes found in %s", routePath)
+	} else {
+		logger.Info("Loaded %d extra routes from %s", len(extraRoutes), routePath)
+
+	}
+	return extraRoutes, nil
+}

internal/route_type.go

@@ -56,3 +56,8 @@ type Route struct {
 	// Middlewares Defines route middlewares from Middleware names
 	Middlewares []string `yaml:"middlewares"`
 }
+
+type ExtraRoute struct {
+	// Routes holds proxy routes
+	Routes []Route `yaml:"routes"`
+}

internal/server.go

@@ -41,7 +41,7 @@ func (gatewayServer GatewayServer) Start() error {
 	}
 
 	if !gatewayServer.gateway.DisableDisplayRouteOnStart {
-		printRoute(gatewayServer.gateway.Routes)
+		printRoute(dynamicRoutes)
 	}
 
 	httpServer := gatewayServer.createServer(":8080", route, nil)

internal/types.go

@@ -168,3 +168,8 @@ type Redis struct {
 	Addr     string `yaml:"addr"`
 	Password string `yaml:"password"`
 }
+
+type ExtraRouteConfig struct {
+	Directory string `yaml:"directory"`
+	Watch     bool   `yaml:"watch"`
+}

internal/var.go

@@ -8,7 +8,9 @@ const AccessMiddleware = "access" // access middlewares
 const BasicAuth = "basic"         // basic authentication middlewares
 const JWTAuth = "jwt"             // JWT authentication middlewares
 const OAuth = "oauth"             // OAuth authentication middlewares
+var (
 	// Round-robin counter
-var counter uint32
-
-var Routes *[]Route
+	counter uint32
+	// dynamicRoutes routes
+	dynamicRoutes []Route
+)