env options supports

README.md

@@ -141,7 +141,6 @@ Positive! Rex is an internal/fundamental project at GoAnywhere. We developed it
 
 ##Roadmap for v1.0
 
-
 - [X] Env-Based Configurations
 - [X] CLI Apps Integrations
 - [X] Performance Boost
@@ -149,8 +148,7 @@ Positive! Rex is an internal/fundamental project at GoAnywhere. We developed it
 - [X] Live Reload Integration
 - [X] Common Middleware Modules
 - [X] Continuous Integration
-- [ ] Full Test Converage
-- [ ] Improved Template Rendering
+- [X] Full Test Converage
 - [ ] Unified Rendering
 - [ ] Project Wiki
 - [ ] Stable API

options.go

@@ -1,7 +1,25 @@
 package rex
 
-type options struct {
+import (
+	"flag"
+	"runtime"
+	"sync"
+
+	"github.com/goanywhere/env"
+)
+
+var (
 	debug    bool
 	port     int
 	maxprocs int
+	once     sync.Once
+)
+
+func configure() {
+	once.Do(func() {
+		flag.BoolVar(&debug, "debug", env.Bool("DEBUG", true), "flag to toggle debug mode")
+		flag.IntVar(&port, "port", env.Int("PORT", 5000), "port to run the application server")
+		flag.IntVar(&maxprocs, "maxprocs", env.Int("MAXPROCS", runtime.NumCPU()), "maximum cpu processes to run the server")
+		flag.Parse()
+	})
 }

rex.go

@@ -1,25 +1,17 @@
 package rex
 
 import (
-	"flag"
 	"net/http"
 	"path/filepath"
-	"runtime"
 
 	"github.com/goanywhere/env"
 	"github.com/goanywhere/fs"
 	"github.com/goanywhere/rex/internal"
-	mw "github.com/goanywhere/rex/middleware"
+	. "github.com/goanywhere/rex/middleware"
 )
 
 var (
 	DefaultMux = New()
-
-	config = &options{
-		debug:    true,
-		port:     5000,
-		maxprocs: runtime.NumCPU(),
-	}
 )
 
 // Get is a shortcut for mux.HandleFunc(pattern, handler).Methods("GET"),
@@ -70,20 +62,12 @@ func Use(module func(http.Handler) http.Handler) {
 }
 
 func Run() {
-	DefaultMux.Use(mw.Logger)
+	DefaultMux.Use(Logger)
 	DefaultMux.Run()
 }
 
 func init() {
-	// setup project root
 	var root = fs.Getcd(2)
 	env.Set(internal.ROOT, root)
 	env.Load(filepath.Join(root, ".env"))
-
-	// cmd arguments
-	flag.BoolVar(&config.debug, "debug", config.debug, "flag to toggle debug mode")
-	flag.IntVar(&config.port, "port", config.port, "port to run the application server")
-	flag.IntVar(&config.maxprocs, "maxprocs", config.maxprocs, "maximum cpu processes to run the server")
-
-	flag.Parse()
 }

router.go

@@ -130,14 +130,15 @@ func (self *Router) ServeHTTP(w http.ResponseWriter, r *http.Request) {
 
 // Run starts the application server to serve incoming requests at the given address.
 func (self *Router) Run() {
-	runtime.GOMAXPROCS(config.maxprocs)
+	configure()
+	runtime.GOMAXPROCS(maxprocs)
 
 	go func() {
 		time.Sleep(500 * time.Millisecond)
-		Infof("Application server is listening at %d", config.port)
+		Infof("Application server is listening at %d", port)
 	}()
 
-	if err := http.ListenAndServe(fmt.Sprintf(":%d", config.port), self); err != nil {
+	if err := http.ListenAndServe(fmt.Sprintf(":%d", port), self); err != nil {
 		Fatalf("Failed to start the server: %v", err)
 	}
 }