update

.dockerignore

@@ -0,0 +1,3 @@
+.git
+qlub
+nginx.conf

Dockerfile

@@ -0,0 +1,20 @@
+FROM golang:1.23.2-alpine AS builder
+
+WORKDIR /app
+
+COPY go.mod go.sum ./
+RUN go mod download
+
+COPY . .
+
+RUN CGO_ENABLED=0 GOOS=linux go build -o qlub .
+
+FROM alpine:latest
+
+WORKDIR /app
+
+COPY --from=builder /app/qlub /usr/local/bin/qlub
+
+COPY subdomains.json .
+
+CMD ["/usr/local/bin/qlub", "--config", "/app/subdomains.json", "--watch"]

README.md

@@ -93,6 +93,18 @@ El archivo de configuración JSON debe contener una lista de subdominios. Cada s
 ]
 ```
 
+## Docker Compose 
+Puedes descargar la imagen lista para trabajar `docker pull njavilas/qlub:1.0`
+
+```yml
+services:
+  qlub:
+    image: njavilas/qlub:1.0
+    volumes:
+      - ./subdomains.json:/app/subdomains.json
+      - ./nginx.conf:/app/nginx.conf
+```
+
 ## Build
 
 go build -o qlub

build.sh

@@ -0,0 +1 @@
+docker build -t njavilas/qlub:1.0 .

docker-compose.yml

@@ -0,0 +1,6 @@
+services:
+  qlub:
+    image: njavilas/qlub:1.0
+    volumes:
+      - ./subdomains.json:/app/subdomains.json
+      - ./nginx.conf:/app/nginx.conf

go.mod

@@ -1,3 +1,8 @@
 module github.com/njavilas2015/qlub
 
 go 1.23.2
+
+require (
+	github.com/fsnotify/fsnotify v1.8.0 // indirect
+	golang.org/x/sys v0.13.0 // indirect
+)

go.sum

@@ -0,0 +1,4 @@
+github.com/fsnotify/fsnotify v1.8.0 h1:dAwr6QBTBZIkG8roQaJjGof0pp0EeF+tNV7YBP3F/8M=
+github.com/fsnotify/fsnotify v1.8.0/go.mod h1:8jBTzvmWwFyi3Pb8djgCCO5IBqzKJ/Jwo8TRcHyHii0=
+golang.org/x/sys v0.13.0 h1:Af8nKPmuFypiUBjVoU9V20FiaFXOcuZI21p0ycVYYGE=
+golang.org/x/sys v0.13.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=

internal/config/config.go

@@ -4,7 +4,10 @@ import (
 	"encoding/json"
 	"flag"
 	"fmt"
+	"log"
 	"os"
+
+	"github.com/fsnotify/fsnotify"
 )
 
 type Subdomain struct {
@@ -26,16 +29,20 @@ func LoadConfig(filename *string) ([]Subdomain, error) {
 
 	var subdomains []Subdomain
 
-	if err := json.Unmarshal(data, &subdomains); err != nil {
-		return nil, err
+	if len(data) > 0 {
+
+		if err := json.Unmarshal(data, &subdomains); err != nil {
+			return nil, err
+		}
 	}
 
 	return subdomains, nil
 }
 
-func ParseFlags() (*bool, *string) {
+func ParseFlags() (*bool, *string, *bool) {
 	showVersion := flag.Bool("version", false, "Show qlub version")
 	configPath := flag.String("config", "", "Path to JSON configuration file")
+	watcher := flag.Bool("watch", false, "Update configuration realtime")
 
 	flag.Parse()
 
@@ -44,10 +51,52 @@ func ParseFlags() (*bool, *string) {
 		os.Exit(1)
 	}
 
-	return showVersion, configPath
+	return showVersion, configPath, watcher
 }
 
 func CheckFileExistence(filename string) bool {
 	_, err := os.Stat(filename)
 	return !os.IsNotExist(err)
 }
+
+func Watcher(filename *string) {
+
+	watcher, err := fsnotify.NewWatcher()
+
+	if err != nil {
+		log.Fatal(err)
+	}
+
+	defer watcher.Close()
+
+	err = watcher.Add(*filename)
+
+	if err != nil {
+		log.Fatal(err)
+	}
+
+	done := make(chan bool)
+
+	go func() {
+		for {
+			select {
+			case event, ok := <-watcher.Events:
+				if !ok {
+					return
+				}
+				if event.Op&fsnotify.Write == fsnotify.Write {
+
+					Generate(filename)
+				}
+			case err, ok := <-watcher.Errors:
+				if !ok {
+					return
+				}
+				log.Printf("Error: %v\n", err)
+			}
+		}
+	}()
+
+	fmt.Println("Observing changes...")
+	<-done
+}

internal/config/generator.go

@@ -30,3 +30,22 @@ func GenerateNginxConfig(subdomains []Subdomain) error {
 
 	return nil
 }
+
+func Generate(configPath *string) {
+
+	if CheckFileExistence(*configPath) {
+
+		subdomains, err := LoadConfig(configPath)
+
+		if err != nil {
+			log.Fatalf("Error loading configuration: %v", err)
+		}
+
+		if err := GenerateNginxConfig(subdomains); err != nil {
+			log.Fatalf("Error generating config: %v", err)
+		}
+	} else {
+		fmt.Println("Please provide the path to the configuration file with --config.")
+		os.Exit(1)
+	}
+}

main.go

@@ -2,7 +2,6 @@ package main
 
 import (
 	"fmt"
-	"log"
 	"os"
 
 	"github.com/njavilas2015/qlub/internal/config"
@@ -12,26 +11,17 @@ var version = "1.0.0"
 
 func main() {
 
-	showVersion, configPath := config.ParseFlags()
+	showVersion, configPath, watcher := config.ParseFlags()
 
 	if *showVersion {
 		fmt.Printf("Versión: %s\n", version)
 		os.Exit(0)
 	}
 
-	if config.CheckFileExistence(*configPath) {
-
-		subdomains, err := config.LoadConfig(configPath)
-
-		if err != nil {
-			log.Fatalf("Error al cargar la configuración: %v", err)
-		}
-
-		if err := config.GenerateNginxConfig(subdomains); err != nil {
-			log.Fatalf("Error generating config: %v", err)
-		}
+	if *watcher {
+		config.Watcher(configPath)
 	} else {
-		fmt.Println("Por favor proporciona la ruta al archivo de configuración con --config.")
-		os.Exit(1)
+		config.Generate(configPath)
 	}
+
 }

subdomains.json

@@ -3,7 +3,7 @@
         "name": "gestion.onbbu.ar",
         "port": "3000",
         "instances": [
-            "192.168.1.101",
+            "192.168.10.101",
             "192.168.1.102",
             "192.168.1.103",
             "192.168.1.104",