Initial release

src/main.go

@@ -0,0 +1,78 @@
+package main
+
+import (
+	"flag"
+	"fmt"
+	"os"
+)
+
+// AppName exposes application name globally
+var AppName = "patroniglue"
+
+// AppVersion stores application version at compilation time
+var AppVersion string
+
+func main() {
+
+	var err error
+	config := NewConfig()
+
+	// Argument handling
+	quiet := flag.Bool("quiet", false, "Quiet mode")
+	verbose := flag.Bool("verbose", false, "Verbose mode")
+	debug := flag.Bool("debug", false, "Debug mode")
+	version := flag.Bool("version", false, "Print version")
+	flag.StringVar(&config.File, "config", os.Getenv("HOME")+"/."+AppName+".yml", "Configuration file")
+	flag.Parse()
+
+	// Print version and exit
+	if *version {
+		if AppVersion == "" {
+			AppVersion = "unknown"
+		}
+		fmt.Println(AppVersion)
+		return
+	}
+
+	// Log level management
+	if *debug {
+		err = SetLogLevel("DEBUG")
+	}
+	if *verbose {
+		err = SetLogLevel("INFO")
+	}
+	if *quiet {
+		err = SetLogLevel("ERROR")
+	}
+
+	if err != nil {
+		Fatal("could not set log level: %v", err)
+	}
+
+	// Read configuration file
+	Debug("reading configuration file")
+	err = config.ReadFile(config.File)
+	if err != nil {
+		Fatal("could not read configuration file: %v", err)
+	}
+
+	// Cache management
+	cache, err := NewCache(config.Cache)
+	if err != nil {
+		Fatal("could not create cache: %v", err)
+	}
+	cache.Startup()
+
+	// Backend management
+	backend := NewBackend(config.Backend, cache)
+
+	// Frontend management
+	frontend, err := NewFrontend(config.Frontend, backend)
+	if err != nil {
+		Fatal("could not create frontend: %v", err)
+	}
+	err = frontend.Start()
+	if err != nil {
+		Fatal("could not start frontend: %v", err)
+	}
+}