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Clean raft configurations if "peers" option is set.

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This commit is contained in:
Chris Lu 2014-10-27 01:09:45 -07:00
parent 179d36ba0e
commit 7ce628bf09
1 changed files with 25 additions and 21 deletions
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46
go/weed/weed_server/raft_server.go
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@ -9,6 +9,8 @@ import (
"math/rand"
"net/http"
"net/url"
"os"
"path"
"strings"
"time"
@ -46,6 +48,13 @@ func NewRaftServer(r *mux.Router, peers []string, httpAddr string, dataDir strin
transporter := raft.NewHTTPTransporter("/cluster", 0)
transporter.Transport.MaxIdleConnsPerHost = 1024
// Clear old cluster configurations if peers are set
if len(s.peers) > 0 {
os.RemoveAll(path.Join(s.dataDir, "conf"))
os.RemoveAll(path.Join(s.dataDir, "log"))
os.RemoveAll(path.Join(s.dataDir, "snapshot"))
}
s.raftServer, err = raft.NewServer(s.httpAddr, s.dataDir, transporter, nil, topo, "")
if err != nil {
glog.V(0).Infoln(err)
@ -53,35 +62,30 @@ func NewRaftServer(r *mux.Router, peers []string, httpAddr string, dataDir strin
}
transporter.Install(s.raftServer, s)
s.raftServer.SetHeartbeatInterval(1 * time.Second)
s.raftServer.SetElectionTimeout(time.Duration(pulseSeconds) * 1150 * time.Millisecond)
s.raftServer.SetElectionTimeout(time.Duration(pulseSeconds) * 3450 * time.Millisecond)
s.raftServer.Start()
s.router.HandleFunc("/cluster/join", s.joinHandler).Methods("POST")
s.router.HandleFunc("/cluster/status", s.statusHandler).Methods("GET")
// Join to leader if specified.
if len(s.peers) > 0 {
if !s.raftServer.IsLogEmpty() {
glog.V(0).Infoln("Starting cluster with existing logs.")
} else {
glog.V(0).Infoln("Joining cluster:", strings.Join(s.peers, ","))
time.Sleep(time.Duration(rand.Intn(1000)) * time.Millisecond)
firstJoinError := s.Join(s.peers)
if firstJoinError != nil {
glog.V(0).Infoln("No existing server found. Starting as leader in the new cluster.")
_, err := s.raftServer.Do(&raft.DefaultJoinCommand{
Name: s.raftServer.Name(),
ConnectionString: "http://" + s.httpAddr,
})
if err != nil {
glog.V(0).Infoln(err)
return nil
}
// Join to leader if specified.
glog.V(0).Infoln("Joining cluster:", strings.Join(s.peers, ","))
time.Sleep(time.Duration(rand.Intn(1000)) * time.Millisecond)
firstJoinError := s.Join(s.peers)
if firstJoinError != nil {
glog.V(0).Infoln("No existing server found. Starting as leader in the new cluster.")
_, err := s.raftServer.Do(&raft.DefaultJoinCommand{
Name: s.raftServer.Name(),
ConnectionString: "http://" + s.httpAddr,
})
if err != nil {
glog.V(0).Infoln(err)
return nil
}
}
// Initialize the server by joining itself.
} else if s.raftServer.IsLogEmpty() {
// Initialize the server by joining itself.
glog.V(0).Infoln("Initializing new cluster")
_, err := s.raftServer.Do(&raft.DefaultJoinCommand{
@ -95,7 +99,7 @@ func NewRaftServer(r *mux.Router, peers []string, httpAddr string, dataDir strin
}
} else {
glog.V(0).Infoln("Recovered from log")
glog.V(0).Infoln("Old conf,log,snapshot should have been removed.")
}
return s