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main.go
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main.go
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package main
import (
"flag"
"fmt"
"log"
"os"
"os/signal"
"github.com/fabian-z/distkv"
"github.com/fabian-z/distkv/example/http-rest/httpd"
)
// Command line defaults
const (
DefaultHTTPAddr = ":11000"
DefaultRaftAddr = ":12000"
)
// Command line parameters
var httpAddr string
var raftAddr string
var joinAddr string
func init() {
flag.StringVar(&httpAddr, "haddr", DefaultHTTPAddr, "Set the HTTP bind address")
flag.StringVar(&raftAddr, "raddr", DefaultRaftAddr, "Set Raft bind address")
flag.StringVar(&joinAddr, "join", "", "Set join address, if any")
flag.Usage = func() {
fmt.Fprintf(os.Stderr, "Usage: %s [options] <raft-data-path> \n", os.Args[0])
flag.PrintDefaults()
}
}
func main() {
flag.Parse()
if flag.NArg() == 0 {
log.Fatal("No Raft storage directory specified")
}
// Ensure Raft storage exists.
raftDir := flag.Arg(0)
if raftDir == "" {
log.Fatal("No Raft storage directory specified")
}
os.MkdirAll(raftDir, 0700)
s := distkv.NewStore(true)
s.RaftDir = raftDir
s.RaftBind = raftAddr
if err := s.Open(joinAddr == ""); err != nil {
log.Fatal("failed to open store:", err.Error())
}
h := httpd.New(httpAddr, s)
if err := h.Start(); err != nil {
log.Fatal("failed to start HTTP service:", err.Error())
}
// If join was specified, make the join request.
if joinAddr != "" {
if err := s.Join(joinAddr, raftAddr); err != nil {
log.Fatalf("failed to join node at %s: %s", joinAddr, err.Error())
}
}
log.Println("hraftd started successfully")
terminate := make(chan os.Signal, 1)
signal.Notify(terminate, os.Interrupt)
<-terminate
log.Println("hraftd exiting")
}