helloworld.go

package main

import (
 "fmt"
 "os"
  // Frameworks
  gopi "github.com/djthorpe/gopi"
  // Modules
  _ "github.com/djthorpe/gopi/sys/logger"
)

func Main(app *gopi.AppInstance, done chan<- struct{}) error {
  app.Logger.Info("Started main thread")

  if name, exists := app.AppFlags.GetString("name"); exists {
    fmt.Println("Hello,", name)
  } else {
    fmt.Println("Hello, World (use -name flag to specify name)")
  }
 
  if wait, _ := app.AppFlags.GetBool("wait"); wait {
    fmt.Println("Press CTRL+C to exit")
    app.WaitForSignal()
  }
  return nil
}

func main() {
  // Create the configuration
  config := gopi.NewAppConfig("sys/logger")
  config.AppFlags.FlagString("name", "", "Your name")
  config.AppFlags.FlagBool("wait",true, "Wait for CTRL+C interrupt to end")

 // Run the command line tool
  os.Exit(gopi.CommandLineTool(config, Main))
}