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serverBully.go
executable file
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serverBully.go
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package main
import (
"./bully"
"./util"
"fmt"
"os"
"os/exec"
"strings"
)
var cmd *exec.Cmd
// Launch server when becoming leader
func becameLeader() {
fmt.Println("Server " + os.Args[1] + ": Became Leader")
// Build child command
cmd = exec.Command("./server")
// Launch command
err := cmd.Start()
if err != nil {
fmt.Println("ERR:", err)
os.Exit(1)
}
err = cmd.Wait()
}
// Kill server when losing leadership
func lostLeadership() {
fmt.Println("Server " + os.Args[1] + ": Lost Leadership")
// cmd.Process.Kill()
if err := cmd.Process.Kill(); err != nil {
fmt.Println("ERR:", err)
os.Exit(1)
}
}
// main program
func main() {
// Get config
properties := util.LoadConfig()
// Set bully config
// set from cmd arg for easier testing purpose
bully.SetSelf("127.0.0.1:666" + os.Args[1])
// bully.SetSelf(properties.SelfBully)
bully.SetBullies(strings.Split(properties.AllBullies, ","))
bully.SetCallbackOnBecomingLeader(becameLeader)
bully.SetCallbackOnLosingLeadership(lostLeadership)
// Launch bully service
bully.StartBully(true)
}