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init.go
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init.go
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package main
import (
"fmt"
"io/ioutil"
"log"
"net"
"strconv"
"time"
"google.golang.org/grpc"
"github.com/abronan/proton"
"github.com/codegangsta/cli"
"github.com/coreos/etcd/raft"
)
func initcluster(c *cli.Context) {
hosts := c.StringSlice("host")
if c.IsSet("host") || c.IsSet("H") {
hosts = hosts[1:]
}
lis, err := net.Listen("tcp", hosts[0])
if err != nil {
log.Fatalf("failed to listen: %v", err)
}
server := grpc.NewServer()
hostname := c.String("hostname")
id := proton.GenID(hostname)
if c.Bool("withRaftLogs") {
raftLogger = &raft.DefaultLogger{Logger: log.New(ioutil.Discard, "", 0)}
}
cfg := proton.DefaultNodeConfig()
cfg.Logger = raftLogger
node, err := proton.NewNode(id, hosts[0], cfg, handler)
if err != nil {
log.Fatal("Can't initialize raft node")
}
node.Campaign(node.Ctx)
go node.Start()
log.Println("Starting raft transport layer..")
proton.Register(server, node)
go server.Serve(lis)
ticker := time.NewTicker(time.Second * 10)
go func() {
i := 0
for _ = range ticker.C {
s := strconv.Itoa(i)
pair, err := proton.EncodePair("key"+s, []byte("myvalue"+s))
if err != nil {
log.Fatal("Can't encode KV pair")
}
if node.IsLeader() {
fmt.Println("---> Leading the raft")
}
node.Propose(node.Ctx, pair)
i++
}
}()
select {}
}