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main.go
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main.go
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package main
import (
"log"
"os"
"os/signal"
"strconv"
"syscall"
)
var ConfigPath string
var GlobalConfig *Config
var GlobalServer *Server
func main() {
// Deal with the arguments.
if len(os.Args) != 3 {
log.Fatal("Usage: " + os.Args[0] + " <port> <config.json>")
}
port, err := strconv.Atoi(os.Args[1])
if err != nil {
log.Fatal("Invalid port number: " + os.Args[1])
}
ConfigPath = os.Args[2]
// Load the configuration.
GlobalConfig, err = LoadConfig(ConfigPath)
if err != nil {
log.Fatal("Failed to load configuration: " + err.Error())
}
// Run the tasks before we start the servers so the configuration page isn't accessible until
// the tasks are started.
GlobalConfig.Lock()
for _, t := range GlobalConfig.Tasks {
t.StartLoop()
if t.AutoRun {
t.Start()
}
}
GlobalConfig.Unlock()
// Start the servers.
GlobalServer, err = NewServer(GlobalConfig, port)
if err != nil {
log.Fatal("Failed to start server: " + err.Error())
shutdown()
}
// Wait for SIGTERM.
sigChan := make(chan os.Signal, 1)
signal.Notify(sigChan, syscall.SIGINT, syscall.SIGTERM)
<-sigChan
log.Print("Goule shutting down...")
shutdown()
}
func shutdown() {
GlobalConfig.Lock()
for _, t := range GlobalConfig.Tasks {
t.StopLoop()
}
if GlobalServer != nil {
GlobalServer.Control.Stop()
GlobalServer.HTTP.Stop()
GlobalServer.HTTPS.Stop()
}
os.Exit(1)
}